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Barman BK, Hernández-Pinilla D, Dao TD, Deguchi K, Ohki S, Hashi K, Goto A, Miyazaki T, Nanda KK, Nagao T. Bioinspired Carbonized Polymer Microspheres for Full-Color Whispering Gallery Mode Emission for White Light Emission, Unclonable Anticounterfeiting, and Chemical Sensing Applications. ACS Appl Mater Interfaces 2024. [PMID: 38651800 DOI: 10.1021/acsami.3c18035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Light-element-based fluorescent materials, colloidal graphene quantum dots, and carbon dots (CDs) have sparked an immense amount of scientific interest in the past decade. However, a significant challenge in practical applications has emerged concerning the development of solid-state fluorescence (SSF) materials. This study addresses this knowledge gap by exploring the unexplored photonic facets of C-based solid-state microphotonic emitters. The proposed synthesis approach focuses on carbonized polymer microspheres (CPMs) instead of conventional nanodots. These microspheres exhibit remarkable SSF spanning the entire visible spectrum from blue to red. The highly spherical shape of CPMs imparts built-in photonic properties in addition to its intrinsic CD-based attributes. Leveraging their excitation-dependent photoluminescence property, these microspheres exhibit amplified spontaneous emission, assisted by the whispering gallery mode resonance across the visible spectral region. Remarkably, unlike conventional semiconductor quantum dots or dye-doped microresonators, this single microstructure showcases adaptable resonant emission without structural/chemical modifications. This distinctive attribute enables a plethora of applications, including microcavity-assisted energy transfer for white light emission, highly sensitive chemical sensing, and secure encrypted anticounterfeiting measures. This interdisciplinary approach, integrating photonics and chemistry, provides a robust solution for light-element-based SSF with inherent photonic functionality and wide-ranging applications.
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Affiliation(s)
- Barun Kumar Barman
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - David Hernández-Pinilla
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Thang Duy Dao
- Integrated Photonics Technologies Unit, Microsystems Division, Silicon Austria Laboratories (SAL), Europastraße 12, 9524 Villach, Austria
| | - Kenzo Deguchi
- Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Shinobu Ohki
- Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Kenjiro Hashi
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Atsushi Goto
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Tsuyoshi Miyazaki
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Karuna Kar Nanda
- Institute of Physics, P. O. Sainik School, Bhubaneswar 751005, India
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Tadaaki Nagao
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
- Department of Condensed Matter Physics, Graduate School of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
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2
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Patra BC, Datta S, Bhattacharya S. A Stimuli-Responsive Dual-Emitting Covalent Organic Framework Shows Selective Sensing of Highly Corrosive Acidic Media via Fluorescence Turn-On Signal with White Light Emission. ACS Appl Mater Interfaces 2024; 16:7650-7659. [PMID: 38315165 DOI: 10.1021/acsami.3c15339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Luminescent covalent organic frameworks (LCOFs) have been employed as platforms for sensing analytes. Judicial incorporation of appropriate functional units inside the framework leads to the different electronic states in the presence of external stimuli, e.g., temperature, pH, etc. We report herein a new COF (TPEPy) as a solid-state acid sensor specific for the highly acidic environments that range from pH ∼0.5 to ∼3.0. This COF shows a protonation-induced reversible color change from bright yellow to deep red upon decreasing the pH from 3 to 0.5 and vice versa. No visual color change was, however, observed above pH 3.0. Photoluminescence (PL) studies show that the intrinsic emission peak of the TPEPy COF at 530 nm is shifted to 420 nm owing to the N-protonation of the imine nitrogen of COF within this pH range. Extensive studies demonstrate that the protonation behavior of the COF is counterion dependent. This was revealed when different acids, e.g., HCl, HNO3, HBr, and HI, were employed. The intensity of the proton-induced emission peak at 420 nm depends significantly upon the counterions with the order of HCl > HNO3 > HBr > HI. These anions interact with the protonated TPEPy COF by cation-anion and H-bonding interactions. Further, the pristine COF showed near white light emission at a particular pH of 2.5 (CIE coordinates 0.27, 0.32). From the PL spectrophotometric titrations, the deprotonation pKa was experimentally found to be 1.8 ± 0.02 for the TPEPy COF. The sensor reported herein is reversible, reusable, and regenerable and is useful for assessing pH fluctuations within a strongly acidic range via digital signaling.
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Affiliation(s)
- Bidhan Chandra Patra
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Subhasis Datta
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
- Department of Chemistry, Indian Institute of Science Education and Research, Tirupati 517619, India
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Zhou WL, Lin W, Chen Y, Dai XY, Liu Y. Tunable Multicolor Lanthanide Supramolecular Assemblies with White Light Emission Confined by Cucurbituril[7]. Small 2023; 19:e2304009. [PMID: 37442787 DOI: 10.1002/smll.202304009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Macrocyclic confinement-induced supramolecular luminescence materials have important application value in the fields of bio-sensing, cell imaging, and information anti-counterfeiting. Herein, a tunable multicolor lanthanide supramolecular assembly with white light emission is reported, which is constructed by co-assembly of cucurbit[7]uril (CB[7]) encapsulating naphthylimidazolium dicarboxylic acid (G1 )/Ln (Eu3+ /Tb3+ ) complex and carbon quantum dots (CD). Benefiting from the macrocyclic confinement effect of CB[7], the supramolecular assembly not only extends the fluorescence intensity of the lanthanide complex G1 /Tb3+ by 36 times, but also increases the quantum yield by 28 times and the fluorescence lifetime by 12 times. Furthermore, the CB[7]/G1 /Ln assembly can further co-assemble with CD and diarylethene derivatives (DAE) to realize the intelligently-regulated full-color spectrum including white light, which results from the competitive encapsulation of adamantylamine and CB[7], the change of pH, and photochromic DAE. The multi-level logic gate based on lanthanide supramolecular assembly is successfully applied in anti-counterfeiting system and information storage, providing an effective method for the research of new luminescent intelligent materials.
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Affiliation(s)
- Wei-Lei Zhou
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
- College of Chemistry and Material Science, Innovation Team of Optical Functional Molecular Devices, Inner Mongolia Minzu University, Tongliao, 028000, P. R. China
| | - Wenjing Lin
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Yong Chen
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Xian-Yin Dai
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Yu Liu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
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Huang M, Liang Z, Huang J, Wen Y, Zhu QL, Wu X. Introduction of Multicomponent Dyes into 2D MOFs: A Strategy to Fabricate White Light-Emitting MOF Composite Nanosheets. ACS Appl Mater Interfaces 2023; 15:11131-11140. [PMID: 36799618 DOI: 10.1021/acsami.2c22568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Metal-organic frameworks (MOFs) have been extensively studied in host-guest chemistry by means of ultrahigh porosities, tunable channels, and component diversities. As the host matrix, MOFs exhibit immense potential in the preparation of single-phase white light-emitting (SPWLE) materials. Nonetheless, it is a great challenge that the size of the introduced guest molecules is limited by MOF pores, which affects the WLE optimization. In this work, two-dimensional (2D) MOFs are first utilized as the host matrices to simultaneously encapsulate red-green-blue fluorescent dyes for SPWLE. Various dyes@2D MOF composites with high-quality WLE performances and ultrathin nanosheet morphologies are directly assembled from 2D MOF precursors and dyes in high yields. Owing to the flexible interlamellar space of 2D MOFs, different types and sizes of guests can be easily introduced, which greatly expands the range of available MOF hosts and guests, making the WLE much more tunable. The strategy of employing 2D MOFs as the host matrices to introduce multicomponent dyes for SPWLE nanosheets resolves the restriction of MOF pores on the guest molecule size and opens a new avenue to rationally design and prepare SPWLE nanosheets that are highly solution-processable.
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Affiliation(s)
- Mengyi Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Zhenxin Liang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Jinling Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Yuehong Wen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qi-Long Zhu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xintao Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Liu H, Guo C, Zhang Z, Mu C, Feng Q, Zhang M. Hexaphenyltriphenylene-Based Multicomponent Metallacages: Host-Guest Complexation for White-Light Emission. Chemistry 2023; 29:e202203926. [PMID: 36727501 DOI: 10.1002/chem.202203926] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 02/03/2023]
Abstract
A hexaphenyltriphenylene-based hexatopic pyridyl ligand is designed and used to prepare three hexagonal prismatic metallacages via metal-coordination-driven self-assembly. Owing to the planar conjugated structures of the hexaphenyltriphenylene skeleton, such metallacages show good host-guest complexation with a series of emissive dyes, which have been further used to tune their emission in solution. Interestingly, based on their complementary emission colors, white light emission is achieved in a mixture of the host metallacages and the guests.
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Affiliation(s)
- Haifei Liu
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, P. R. China
| | - Zeyuan Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Chaoqun Mu
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Qian Feng
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Mingming Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
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6
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Zhao Q, Zhao D, Zhang X. High-Efficiency Simplified Orange and White Organic Light-Emitting Devices Based on a Platinum(II) Complex. Micromachines (Basel) 2022; 14:65. [PMID: 36677126 PMCID: PMC9867207 DOI: 10.3390/mi14010065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/18/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
We demonstrated efficient simplified orange and white organic light-emitting devices based on a platinum(II) complex Tetra-Pt-N. The maximum current efficiency achieved from the optimized orange device was 57.6 cd/A. The emission mechanism for the system of Tetra-Pt-N doped into 4,4'-bis(arbazole-9-yl)biphenyl was discussed. Moreover, a high-efficiency and simplified white device was fabricated by introducing an ultra-thin blue phosphorescent emission layer. The white device with a maximum current efficiency of 41.9 cd/A showed excellent stable spectra and low efficiency roll-off.
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Affiliation(s)
- Qing Zhao
- Central China Normal University Wollongong Joint Institute, Central China Normal University, Wuhan 430079, China
| | - Dongfang Zhao
- College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
| | - Xinchen Zhang
- College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
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7
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Zhang Z, Huang Y, Bai Q, Wu T, Jiang Z, Su H, Zong Y, Wang M, Su PY, Xie TZ, Wang P. Aggregation-Induced Emission Metallocuboctahedra for White Light Devices. JACS Au 2022; 2:2809-2820. [PMID: 36590262 PMCID: PMC9795569 DOI: 10.1021/jacsau.2c00568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Materials for organic light-emitting devices which exhibit superior emission properties in both the solution and solid states with a high fluorescence quantum yield have been extensively sought after. Herein, two metallocages, S1 and S2, were constructed, and both showed typical aggregation-induced emission (AIE) features with intense yellow fluorescence. By adding blue-emissive 9,10-dimethylanthracene, pure white light emission can be produced in the solution of S1 and S2. Furthermore, due to the remarkable AIE feature and good fluorescence quantum yield in the solid state, metallocages are highly emissive in the solid state and can be utilized to coat blue LED bulbs or integrate with blue-emitting chips to obtain white light. This study advances the usage of metallocages as practical solid-state fluorescent materials and provides a fresh perspective on highly emissive AIE materials.
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Affiliation(s)
- Zhe Zhang
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Yan Huang
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Qixia Bai
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Tun Wu
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Zhiyuan Jiang
- Hunan
Key Laboratory of Micro & Nano Materials Interface Science; College
of Chemistry and Chemical Engineering, Central
South University, Changsha 410083, China
| | - Haoyue Su
- State
Key Laboratory of Supramolecular Structure and Materials, College
of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Yingxin Zong
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Ming Wang
- State
Key Laboratory of Supramolecular Structure and Materials, College
of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Pei-Yang Su
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Ting-Zheng Xie
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Pingshan Wang
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
- Hunan
Key Laboratory of Micro & Nano Materials Interface Science; College
of Chemistry and Chemical Engineering, Central
South University, Changsha 410083, China
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8
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Srivastava P, Verma VK, Sabbarwal S, Singh M, Sahoo K, Koch B, Kumar M. White light-emitting, biocompatible, water-soluble metallic magnesium nanoclusters for bioimaging applications. Nanotechnology 2022; 34:105702. [PMID: 36537740 DOI: 10.1088/1361-6528/aca545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Ultra-small (1.6 nm), water-soluble, white light-emitting (WLE), highly stable (∼8 months) BSA templated metallic (Mg0) nanoclusters (fluorescent magnesium nanoclusters = FMNCs) is developed using the green and facile route. Synthesis was facilitated by the reduction of magnesium salt, where template bovine serum albumin is utilized as a reducing agent and ascorbic acid act as a capping agent to impart stability in water, thereby obtaining stabilized Mg0nanoclusters In solution, stabilized Mg0nanoclusters produce white light (450-620 nm with FWHM ∼120 nm) upon 366 nm light excitation. This white light emission was found to have a CIE coordinate of 0.30, 0.33 [pure white light CIE (0.33, 0.33)]. Taking advantage of WLE and ultrasmall size, FMNCs were used forin vitrofluorescence imaging of HaCaT cell lines, yielding blue (τ= 2.94 ns, with a relative of QY = 1.2 % w.r.t QS), green (τ= 3.07 ns; relative quantum yield of 4.6% w.r.t R6G) and red (τ= 0.3 ns) images. Further, incubation of FMNCs with HEK293 (Human embryonic kidney cell) and cancerous MDA-MB-231 (Breast cancer cell line) human cell lines yielded 100 % cell viability. Current work is envisioned to contribute significantly in the area of science, engineering, and nanomedicine.
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Affiliation(s)
- Prachi Srivastava
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- School of Biomedical Engineering, IIT (BHU), Varanasi-221005, India
| | - Vivek Kumar Verma
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- School of Biomedical Engineering, IIT (BHU), Varanasi-221005, India
| | - Shivesh Sabbarwal
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
| | - Mamata Singh
- Department of Zoology, Banaras Hindu University, Varanasi-221005, India
| | - Kedar Sahoo
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
| | - Biplob Koch
- Department of Zoology, Banaras Hindu University, Varanasi-221005, India
| | - Manoj Kumar
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
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9
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Parimala MPD, Rao MC, Suresh K, Anil Dai CV, Murthy KVR, Dubey V. Luminescence studies of a Li 2 Ca 1-x SiO 4 :xSm 3+ phosphor for the generation of white light under NUV-excited phosphor converting LEDs. LUMINESCENCE 2022; 37:1284-1289. [PMID: 35614866 DOI: 10.1002/bio.4294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/06/2022] [Accepted: 05/16/2022] [Indexed: 11/09/2022]
Abstract
In this paper, we present new aspects of Sm3+ -doped pure Li2 CaSiO4 as a suitable candidate for white light emitting diode (WLED) applications. The samples were mainly prepared using a conventional modified solid-state synthesis technique. The structural studies were done using X-ray diffraction and Rietveld refinement. Instruments such as a scanning electron microscope (SEM) were used to obtain information about the morphology of the as-prepared samples. Photoluminescence (PL) analysis of phosphor samples for variable concentrations of doping ions with variable excitations were presented. When doped with Sm3+ in host Li2 CaSiO4 it emitted intense blue, green and red emissions and a more intense red emission peak (605 nm) under 408 nm excitation (near-UV-blue). Our study shows that the as-prepared phosphor may be useful for optical devices and mainly for WLEDs. The corresponding transitions of doping ions and concentration quenching effect were studied in detail. The 1931 Commission Internationale de l'Eclairage (x, y) chromaticity coordinates showed the distribution of spectral regions calculated from PL emission spectra and this was found (0.63, 0.36) in the red region, so the phosphor may be useful for near-UV-blue excited WLED applications.
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Affiliation(s)
| | - M C Rao
- Department of Physics, Andhra Loyola College, Vijayawada, India
| | - K Suresh
- Department of Physics, Government College (A), Rajahmundry, India
| | - Ch Vijay Anil Dai
- Department of Physics, AG & SG Siddhartha College of Arts & Sciences, Vyyuru, India
| | - K V R Murthy
- Department of Applied Physics, Faculty of Engineering and Technology, M.S. University of Baroda, Vadodara, India
| | - Vikas Dubey
- Department of Physics, Bhilai Institute of Technology Raipur-493661, Chhattisgarh, India
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10
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Lin ML, Dhanabalan B, Biffi G, Leng YC, Kutkan S, Arciniegas MP, Tan PH, Krahne R. Correlating Symmetries of Low-Frequency Vibrations and Self-Trapped Excitons in Layered Perovskites for Light Emission with Different Colors. Small 2022; 18:e2106759. [PMID: 35218284 DOI: 10.1002/smll.202106759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/15/2022] [Indexed: 06/14/2023]
Abstract
The soft hybrid organic-inorganic structure of two-dimensional layered perovskites (2DLPs) enables broadband emission at room temperature from a single material, which makes 2DLPs promising sources for solid-state white lighting, yet with low efficiency. The underlying photophysics involves self-trapping of excitons favored by distortions of the inorganic lattice and coupling to phonons, where the mechanism is still under debate. 2DLPs with different organic moieties and emission ranging from self-trapped exciton (STE)-dominated white light to blue band-edge photoluminescence are investigated. Detailed insights into the directional symmetries of phonon modes are gained using angle-resolved polarized Raman spectroscopy and are correlated to the temperature-dependence of the STE emission. It is demonstrated that weak STE bands at low-temperature are linked to in-plane phonons, and efficient room-temperature STE emission to more complex coupling to several phonon modes with out-of-plane components. Thereby, a unique view is provided into the lattice deformations and recombination dynamics that are key to designing more efficient materials.
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Affiliation(s)
- Miao-Ling Lin
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
- Center of Materials Science and Optoelectronics Engineering & CAS Center of Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Balaji Dhanabalan
- Optoelectronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa, 16163, Italy
| | - Giulia Biffi
- Optoelectronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa, 16163, Italy
| | - Yu-Chen Leng
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
- Center of Materials Science and Optoelectronics Engineering & CAS Center of Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Seda Kutkan
- Optoelectronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa, 16163, Italy
| | - Milena P Arciniegas
- Nanochemistry, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa, 16163, Italy
| | - Ping-Heng Tan
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
- Center of Materials Science and Optoelectronics Engineering & CAS Center of Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Roman Krahne
- Optoelectronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa, 16163, Italy
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11
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Kou T, Wei Q, Jia W, Chang T, Peng C, Liang Y, Zou B. Light Emission Enhancement of (C 3H 10N) 4Pb 1-xMn xBr 6 Metal-Halide Powders by the Dielectric Confinement Effect of a Nanosized Water Layer. ACS Appl Mater Interfaces 2022; 14:6167-6179. [PMID: 35073040 DOI: 10.1021/acsami.1c20584] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Organic-inorganic hybrid metal halides have been widely studied as a kind of phosphor materials for high-performance white light-emitting diodes. In this paper, a series of organic-inorganic metal-halide (C3H10N)4Pb1-xMnxBr6 powders with different Mn2+ ion doping concentrations were synthesized by mechanochemical methods, giving broadband white light emission with a photoluminescence quantum yield of 36.1% at room temperature, which turn green with a much larger intensity at 80 K. Interestingly, its emission converted from white to red after 100 °C treatments and turned back to white again when exposed to moist air for a while. This emission variation was caused by the adsorbed water layer on the surface of product powders via the dielectric confinement. The red emission from no water powders is identified to occur from the Mn ferromagnetic pair in point-shared octahedral sites, while the broadband white emission originated from the surface water-assisted dielectric confinement and surface polarization which combine the self-trapped excitons and d-d transitions of Mn ions and Mn pairs in the product. Moreover, this white emission can transform into green color at 80 K with a much stronger intensity, caused by the even efficient surface dielectric confinement by the adsorbed frozen water layer. This special compound has the advantages of simple preparation, low cost, and good stability and even contains water molecule in the air, giving a near-perfect white emission, with CIE of (0.33, 0.35) and correlated color temperatures at around 5733 K, which may be used for different applications such as sensing, solid-state lighting, and display.
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Affiliation(s)
- Tongtong Kou
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
| | - Qilin Wei
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
| | - Wenyong Jia
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
| | - Tong Chang
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
| | - Chengyu Peng
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
| | - Yi Liang
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
| | - Bingsuo Zou
- School of Physical Science and Technology and School of Resources, Environment and Materials, Key Laboratory of Featured Metal Resources Utilization and Advanced Materials Development, Guangxi University, Nanning 530004, China
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12
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Strek W, Wiewiórski P, Miśta W, Tomala R, Stefanski M. Laser-Induced Generation of Hydrogen in Water by Using Graphene Target. Molecules 2022; 27:718. [PMID: 35163983 DOI: 10.3390/molecules27030718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/13/2022] [Accepted: 01/20/2022] [Indexed: 11/17/2022]
Abstract
A new method of hydrogen generation from water, by irradiation with CW infrared laser diode of graphene scaffold immersed in solution, is reported. Hydrogen production was extremely efficient upon admixing NaCl into water. The efficiency of hydrogen production increased exponentially with laser power. It was shown that hydrogen production was highly efficient when the intense white light emission induced by laser irradiation of graphene foam was occurring. The mechanism of laser-induced dissociation of water is discussed. It was found that hydrogen production was extremely high, at about 80%, and assisted by a small emission of O2, CO and CO2 gases.
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13
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Wang G, Yu H, Yang L, He Z, Zhou L, Sun J, Gu X, Yang W, Tang BZ. Core-Shell Fluorescent Polymeric Particles with Tunable White Light Emission Based on Aggregation Microenvironment Manipulation. Angew Chem Int Ed Engl 2021; 60:25246-25251. [PMID: 34558786 DOI: 10.1002/anie.202110180] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/12/2021] [Indexed: 12/21/2022]
Abstract
White-light emitting polymers (WLEPs) based on aggregation microenvironment-sensitive aggregation-induced emission (AIE) and Förster resonance energy transfer (FRET) have aroused great interest in lighting and optoelectronic devices. Herein, we developed a novel strategy to construct WLEP particles via a stepwise self-stabilized precipitation polymerization of two emission-complementary AIEgens under core-shell engineering, where the AIE characteristics and FRET process of core-shell fluorescent polymeric particles (CS-FPPs) could be modulated by altering aggregation microenvironment under swelling and shrinking of polymers, facilitating the tunable white light emission of CS-FPPs. Furthermore, such tuning could be fast realized in the solid state, thus demonstrating the potential in anti-counterfeiting. This work proved the significance of aggregation microenvironment on emission of luminogens, guiding the development of high-efficiency emission-tunable materials.
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Affiliation(s)
- Guan Wang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Hao Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Liming Yang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Zhentao He
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Liangyu Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Jiangman Sun
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Xinggui Gu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Wantai Yang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China
| | - Ben Zhong Tang
- Shenzhen Institute of Molecular Aggregate Science and Engineering, School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, China
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14
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Roy B, Maisuls I, Zhang J, Niemeyer FC, Rizzo F, Wölper C, Daniliuc CG, Tang BZ, Strassert C, Voskuhl J. Mapping the regioisomeric space and visible color range of purely organic dual emitters with ultralong phosphorescence components: From violet to red towards pure white-light. Angew Chem Int Ed Engl 2021; 61:e202111805. [PMID: 34693600 PMCID: PMC9299909 DOI: 10.1002/anie.202111805] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/12/2021] [Indexed: 11/25/2022]
Abstract
We mapped the entire visible range of the electromagnetic spectrum and achieved white light emission (CIE: 0.31, 0.34) by combining the intrinsic ns‐fluorescence with ultralong ms‐phosphorescence from purely organic dual emitters. We realized small molecular materials showing high photoluminescence quantum yields (ΦL) in the solid state at room temperature, achieved by active exploration of the regioisomeric substitution space. Chromophore stacking‐supported stabilization of triplet excitons with assistance from enhanced intersystem crossing channels in the crystalline state played the primary role for the ultra‐long phosphorescence. This strategy covers the entire visible spectrum, based on organic phosphorescent emitters with versatile regioisomeric substitution patterns, and provides a single molecular source of white light with long lifetime (up to 163.5 ms) for the phosphorescent component, and high overall photoluminescence quantum yields (up to ΦL=20 %).
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Affiliation(s)
- Bibhisan Roy
- University of Duisburg-Essen: Universitat Duisburg-Essen, Faculty of Chemistry (Organic Chemistry) and Center for Nanointegration (CENIDE), GERMANY
| | - Iván Maisuls
- WWU Münster: Westfalische Wilhelms-Universitat Munster, Institut für anorganische und analytische Chemie, CeNTech, CiMIC, SoN, GERMANY
| | - Jianyu Zhang
- Hong Kong University: University of Hong Kong, Department of Chemistry, HONG KONG
| | - Felix C Niemeyer
- University of Duisburg-Essen: Universitat Duisburg-Essen, Faculty of Chemistry (orgnaic Chemsitry) and Center for Nanointegration (CENIDE), GERMANY
| | - Fabio Rizzo
- WWU Münster: Westfalische Wilhelms-Universitat Munster, Organisch Chemisches Institut, GERMANY
| | - Christoph Wölper
- University of Duisburg-Essen: Universitat Duisburg-Essen, Institute for Inorganic Chemsity and Center for Nanointegation (CENIDE), GERMANY
| | - Constantin G Daniliuc
- WWU Münster: Westfalische Wilhelms-Universitat Munster, Organisch Chemisches Institut, GERMANY
| | - Ben Zhong Tang
- Hong Kong University: University of Hong Kong, Department of Chemistry, HONG KONG
| | - Cristian Strassert
- WWU Münster: Westfalische Wilhelms-Universitat Munster, Institut für anorganische und analytische Chemie, CeNTech, CiMIC, SON, GERMANY
| | - Jens Voskuhl
- Universitat Duisburg-Essen, Institute of organic chemistry, Universitätsstraße 7, 45117, Essen, GERMANY
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15
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Haehnle B, Schuster PA, Chen L, Kuehne AJC. All-Conjugated Polymer Core-Shell and Core-Shell-Shell Particles with Tunable Emission Profiles and White Light Emission. Small 2021; 17:e2101411. [PMID: 34018682 DOI: 10.1002/smll.202101411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Future applications of conjugated polymer particles (CPP) in medicine, organic photonics, and optoelectronics greatly depend on high performance and precisely adjustable optical properties of the particles. To meet these criteria, current particle systems often combine conjugated polymers with inorganic particles in core-shell geometries, extending the possible optical characteristics of CPP. However, current conjugated polymer particles are restricted to a single polymer phase composed of a distinct polymer or a polymer blend. Here, a synthetic toolbox is presented that enables the synthesis of monodisperse core-shell and core-shell-shell particles, which consist entirely of conjugated polymers but of different types in the core and the shells. Seeded and fed-batch dispersion polymerizations based on Suzuki-Miyaura-type cross-coupling are investigated. The different approaches allow accurate control over the created interface between the conjugated polymer phases and thus also over the energy transfer phenomena between them. This approach opens up completely new synthetic freedom for fine tuning of the optical properties of CPP, enabling, for example, the synthesis of individual white light-emitting particles.
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Affiliation(s)
- Bastian Haehnle
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Philipp A Schuster
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Lisa Chen
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Alexander J C Kuehne
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
- DWI - Leibniz-Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany
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16
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Sun Y, Geng H, Peng Q, Shuai Z. Computational Study on the Charge Transport and Optical Spectra of Anthracene Derivatives in Aggregates. Chemphyschem 2020; 21:952-957. [PMID: 32182404 DOI: 10.1002/cphc.202000187] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/16/2020] [Indexed: 11/09/2022]
Abstract
A recent experiment [Angew. Chem. Int. Ed. 2017, 56, 722-727] found that a (1 : 9) blend film of two anthracene derivatives, 2-fluorenyl-2-anthracene (FlAnt) and 2-anthryl-2-anthracence (2 A), exhibit both efficient white light emission and high hole mobility, thus promising for organic light-emitting transistors (OLETs). Employing quantum chemistry at the polarizable continuum model (PCM) and the quantum mechanics/molecular mechanics (QM/MM) levels, we investigated the excited-state structures, optical spectra, band structure and the carrier mobility for FlAnt and 2 A from solution to aggregate phases. We suggest using the ratio of intermolecular excitonic coupling J and intramolecular excited state relaxation energy E to judge the bathochromic shift in optical emission in aggregates. For FlAnt, ρ=J/E is calculated to be less than 0.17, a critical value we identified earlier, and the spectra in solution and aggregate phases present quite similar features (blue emission). However, ρ is ∼0.5 for 2 A systems, and the calculated emission in the aggregate phase exhibits a remarkable bathochromic shift. In addition, the 0-0 emission is strongly suppressed in the herringbone stacking. These observations justify the experimental findings that (i) 2 A is blue emissive in solution but yellow-green in the aggregate phase, whereas FlAnt is always blue, and (ii) the blend of them show white emission. By using the "quantum nuclear tunneling" model we proposed earlier, we found the hole mobility for FlAnt and 2 A are 0.5 and 4.2 cm2 V-1 s-1 , respectively, indicating both are good hole transport materials.
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Affiliation(s)
- Yajing Sun
- Department of Chemistry, Tianjin University, Tianjin, 300072, PR China
| | - Hua Geng
- Department of Chemistry, Capital Normal University, Beijing, 100048, PR China
| | - Qian Peng
- Key Laboratory of Organic Solids and, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Zhigang Shuai
- MOE Key Laboratory of Organic Optoelectronics and, Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
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17
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Wang Z, Liu Y, Zhen S, Li X, Zhang W, Sun X, Xu B, Wang X, Gao Z, Meng X. Gram-Scale Synthesis of 41% Efficient Single-Component White-Light-Emissive Carbonized Polymer Dots with Hybrid Fluorescence/Phosphorescence for White Light-Emitting Diodes. Adv Sci (Weinh) 2020; 7:1902688. [PMID: 32099763 PMCID: PMC7029630 DOI: 10.1002/advs.201902688] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/18/2019] [Indexed: 05/19/2023]
Abstract
Fluorescent carbon dots (CDs) are compelling optical emitters to construct white light-emitting diodes (WLEDs). However, it remains a challenge to achieve large-scale and highly efficient single-component white-light-emissive CDs suitable for WLED applications. Herein, a low cost, fast processable, environmentally friendly, and one-step synthetic approach is developed for the preparation of gram-scale and highly efficient single-component white-light-emissive carbonized polymer dots (SW-CPDs). It is revealed that hybrid fluorescence/phosphorescence components cooperatively contribute to the emergence of white light emission. The SW-CPDs exhibit a record quantum yield (QY) of ≈41% for the white light emission observed in solid-state CD systems, while the QY of the phosphorescence is ≈23% under ambient conditions. Heavy doping of N and P elements as well as presence of covalently cross-linked polymer frameworks is suggested to account for the emergence of hybrid fluorescence/phosphorescence, which is supported by the experimental results and theoretical calculations. A WLED is fabricated by applying the SW-CPDs on an UV-LED chip, showing favorable white-light-emitting characteristics with a high luminous efficacy of 18.7 lm W-1 that is comparable to that of state-of-the-art WLEDs reported before.
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Affiliation(s)
- Zifei Wang
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Yang Liu
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Shijie Zhen
- State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou510640China
| | - Xiaoxi Li
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Weiguang Zhang
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Xun Sun
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Baoyuan Xu
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Xue Wang
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Zhenhua Gao
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
| | - Xiangeng Meng
- School of Materials Science & EngineeringQilu University of Technology (Shandong Academy of Sciences)Jinan250300China
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18
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Hao M, Sun G, Zuo M, Xu Z, Chen Y, Hu XY, Wang L. A Supramolecular Artificial Light-Harvesting System with Two-Step Sequential Energy Transfer for Photochemical Catalysis. Angew Chem Int Ed Engl 2019; 59:10095-10100. [PMID: 31625651 DOI: 10.1002/anie.201912654] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Indexed: 12/16/2022]
Abstract
An artificial light-harvesting system with sequential energy-transfer process was fabricated based on a supramolecular strategy. Self-assembled from the host-guest complex formed by water-soluble pillar[5]arene (WP5), a bola-type tetraphenylethylene-functionalized dialkyl ammonium derivative (TPEDA), and two fluorescent dyes, Eosin Y (ESY) and Nile Red (NiR), the supramolecular vesicles achieve efficient energy transfer from the AIE guest TPEDA to ESY. ESY can function as a relay to further transfer the energy to the second acceptor NiR and realize a two-step sequential energy-transfer process with good efficiency. By tuning the donor/acceptor ratio, bright white light emission can be successfully achieved with a CIE coordinate of (0.33, 0.33). To better mimic natural photosynthesis and make full use of the harvested energy, the WP5⊃TPEDA-ESY-NiR system can be utilized as a nanoreactor: photocatalyzed dehalogenation of α-bromoacetophenone was realized with 96 % yield in aqueous medium.
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Affiliation(s)
- Min Hao
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Guangping Sun
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Minzan Zuo
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zuqiang Xu
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yuan Chen
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiao-Yu Hu
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.,College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, China
| | - Leyong Wang
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.,School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
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Roy S, Pramanik S, Mandal P, Manna M, Bhandari S. Hue- and Chromaticity-Based Exploration of Surface Complexation-Induced Tunable Emission from Non-Luminescent Quantum Dots. Chem Asian J 2019; 14:3823-3829. [PMID: 31532886 DOI: 10.1002/asia.201901107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/16/2019] [Indexed: 12/19/2022]
Abstract
Herein we report the use of a hue parameter of HSV (Hue, Saturation and Value) color space-in combination with chromaticity color coordinates-for exploring the complexation-induced luminescence color changes, ranging from blue to green to yellow to white, from a non-luminescent Fe-doped ZnS quantum dot (QD). Importantly, the surface complexation reaction helped a presynthesized non-luminescent Fe-doped ZnS QD to glow with different luminescence colors (such as blue, cyan, green, greenish-yellow, yellow) by virtue of the formation of various luminescent inorganic complexes (using different external organic ligands), while the simultaneous blue- and yellow-emitting complex formation on the surface of non-luminescent Fe-doped ZnS QD led to the generation of white light emission, with a hue mean value of 85 and a chromaticity of (0.28,0.33). Furthermore, the surface complexation-assisted incorporation of luminescence properties to a non-luminescent QD not only overcomes their restricted luminescence-based applications such as light-emitting, biological and sensing applications but also bring newer avenues towards unravelling the surface chemistry between QDs and inorganic complexes and the advantage of having an inorganic complex with QD for their aforementioned useful applications.
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Affiliation(s)
- Shilaj Roy
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India.,Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India
| | - Sabyasachi Pramanik
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India.,Department of Chemistry, National Institute of Technology Sikkim, Sikkim-, 737139, India
| | - Prasenjit Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India
| | - Mihir Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India
| | - Satyapriya Bhandari
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India.,Centre for Nano and Material Sciences, Jain University, Bangalore, 562112, India.,Physics Discipline, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, 382355, India
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20
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Li L, Cheng J, Liu Z, Song L, You Y, Zhou X, Huang W. Ratiometric Luminescent Sensor of Picric Acid Based on the Dual-Emission Mixed-Lanthanide Coordination Polymer. ACS Appl Mater Interfaces 2018; 10:44109-44115. [PMID: 30460838 DOI: 10.1021/acsami.8b13719] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Powerful explosive sensors play a key role in public security and environmental protection. Herein, we report a series of isostructural lanthanide coordination polymers [Ln2L1.5(NMP)2] n (LnL: Ln = Eu, Gd, Tb, Dy, Ho, and Er; H4L = [1,1':4',1″-terphenyl]-2',4,4″,5'-tetracarboxylic acid; NMP = N-methyl-2-pyrrolidone) and mixed-Ln LnL (Eu xTb1- xL, Eu xGd1- xL, Tb xGd1- xL, and Eu xTb0.02- xGd0.98L). Luminescence studies show that both H4L and GdL emit strong fluorescence and phosphorescence at 77 K while only fluorescence at room temperature, and TbL exhibits strong Tb3+ characteristic emission, although the energy difference between the triplet excited state of H4L (20661 cm-1) and the 5D4 energy level of Tb3+ (20500 cm-1) is very small. By doping Eu3+ and Tb3+ into GdL, we obtained Eu xTb0.02- xGd0.98L emitting warm white light. For TbL and Tb0.01Gd0.99L showing dual emission, upon addition of picric acid (PA) into their suspensions in Tris-HCl buffer, Tb3+ emission decreases slowly; however, the ligand-based emission is sharply quenched, rendering TbL and Tb0.01Gd0.99L excellent single-lanthanide and mixed-lanthanide ratiometric luminescence PA sensor materials, respectively.
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Affiliation(s)
- Liang Li
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , Nanjing 211816 , China
| | - Jiahui Cheng
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
| | - Zhipeng Liu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
| | - Lin Song
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
| | - Yujian You
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
| | - Xinhui Zhou
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , Nanjing 211816 , China
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21
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Fang M, Fu L, Ferreira RAS, Carlos LD. White-Light Emitting Di-Ureasil Hybrids. Materials (Basel) 2018; 11:E2246. [PMID: 30424487 PMCID: PMC6266990 DOI: 10.3390/ma11112246] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/06/2018] [Accepted: 11/08/2018] [Indexed: 11/16/2022]
Abstract
White-light emitting materials have emerged as important components for solid state lighting devices with high potential for the replacement of conventional light sources. Herein, amine-functionalized organic-inorganic di-ureasil hybrids consisting of a siliceous skeleton and oligopolyether chains codoped with lanthanide-based complexes, with Eu3+ and Tb3+ ions and 4,4'-oxybis(benzoic acid) and 1,10-phenanthroline ligands, and the coumarin 1 dye were synthesized by in situ sol⁻gel method. The resulting luminescent di-ureasils show red, green, and blue colors originated from the Eu3+, Tb3+, and C1 emissions, respectively. The emission colors can be modulated either by variation of the relative concentration between the emitting centers or by changing the excitation wavelength. White light emission is achieved under UV excitation with absolute quantum yields of 0.148 ± 0.015, 0.167 ± 0.017, and 0.202 ± 0.020 at 350, 332, and 305 nm excitation, respectively. The emission mechanism was investigated by photoluminescence and UV⁻visible absorption spectroscopy, revealing an efficient energy transfer from the organic ligands to the Ln3+ ions and the organic dye, whereas negligible interaction between the dopants is discerned. The obtained luminescent di-ureasils have potential for optoelectronic applications, such as in white-light emitting diodes.
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Affiliation(s)
- Ming Fang
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Lianshe Fu
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Rute A S Ferreira
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Luís D Carlos
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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22
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Zhong J, Yu L, Man X, Sun W, Wu X, Jiang X, Gao Z, Guo Q, Zou Y. The self-reduction synthesis and luminescent properties of Eu 2+ /Eu 3+ activated BaZr x Si 3 O 7+2x phosphors with white light emission for white light-emitting diodes. LUMINESCENCE 2018; 33:1387-1393. [PMID: 30328243 DOI: 10.1002/bio.3559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/05/2018] [Accepted: 09/12/2018] [Indexed: 01/06/2023]
Abstract
The BaZrx Si3 O7+2x :Eu2+ /Eu3+ (2%, molar ratio) phosphors were prepared with adding different amounts of zirconium dioxide (ZrO2 ) (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) by a self-reduction method under air conditions. X-ray diffraction, photoluminescence properties, thermal quenching properties and luminescent lifetimes of the prepared samples were systematically analyzed. In BaZrx Si3 O7+2x :Eu2+ /Eu3+ , both the 4f → 5d transitions of Eu2+ and sharp emissions assigned to 5 D0 → 7 FJ (J = 0, 1, 2, 3, 4) transitions of Eu3+ were observed. In addition, the results also reveal that the amount of ZrO2 affects the crystal structure, the self-reduction process and further influences the relative intensity of Eu2+ /Eu3+ in all samples. Therefore, the diverse emission colors can be obtained and modulated by controlling the content of ZrO2 . The highlight of this work is that the white light emission is observed, when x is 0.4, 0.6, 0.8 and 1, respectively.
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Affiliation(s)
- Jianlin Zhong
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
| | - Lixin Yu
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
| | - Xiaoqin Man
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
| | - Wei Sun
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
| | - Xiao Wu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, P. R. China
| | - Xiaofang Jiang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, P. R. China
| | - Zhengyu Gao
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
| | - Qihuang Guo
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
| | - Yingxuan Zou
- College of Materials Science and Engineering, Nanchang University, Nanchang, P. R. China
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23
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Li J, Liang Q, Hong JY, Yan J, Dolgov L, Meng Y, Xu Y, Shi J, Wu M. White Light Emission and Enhanced Color Stability in a Single-Component Host. ACS Appl Mater Interfaces 2018; 10:18066-18072. [PMID: 29727165 DOI: 10.1021/acsami.8b02716] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Eu3+ ion can be effectively sensitized by Ce3+ ion through an energy-transfer chain of Ce3+-(Tb3+) n-Eu3+, which has contributed to the development of white light-emitting diodes (WLEDs) as it can favor more efficient red phosphors. However, simply serving for WLEDs as one of the multicomponents, the design of the Ce3+-(Tb3+) n-Eu3+ energy transfer is undoubtedly underused. Theoretically, white light can be achieved with extra blue and green emissions released from Ce3+ and Tb3+. Herein, the design of the white light based on these three multicolor luminescence centers has been realized in GdBO3. It is the first time that white light is generated via accurate controls on the Ce3+-(Tb3+) n-Eu3+ energy transfer in such a widely studied host material. Because the thermal quenching rates of blue, green, and red emissions from Ce3+, Tb3+, and Eu3+, respectively, are well-matched in the host, this novel white light exhibits superior color stability and potential application prospect.
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Affiliation(s)
- Junhao Li
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Qiongyun Liang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Jun-Yu Hong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Jing Yan
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Leonid Dolgov
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Yuying Meng
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Yiqin Xu
- Guangdong Institute of Semiconductor Industrial Technology , Guangzhou 510650 , P. R. China
| | - Jianxin Shi
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Mingmei Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
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24
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Nishikitani Y, Cho T, Uchida S, Nishimura S, Oyaizu K, Nishide H. Polymer-Based White-Light-Emitting Electrochemical Cells with Very High Color-Rendering Index Based on Blue-Green Fluorescent Polyfluorenes and Red-Phosphorescent Iridium Complexes. Chempluschem 2018; 83:463-469. [PMID: 31957353 DOI: 10.1002/cplu.201800198] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Indexed: 11/07/2022]
Abstract
Application of the concept of three-color (red (R), green (G), and blue (B)) light-mixing to obtain white light is the most suitable way to realize white-light-emitting devices with very high color-rendering indices (CRI). White-light-emitting devices based on the three-color-mixing method could be used to create lighting and display technologies. Here, white-light-emitting electrochemical cells (LECs) with very high CRIs are reported, which were fabricated by using blend films composed of a fluorescent π-conjugated polymer (FCP), poly(9,9-dioctylfluorene-co-benzothiadiazole) (PFBT), and a phosphorescent iridium complex, [Ir(ppy)2 (biq)]+ (PF6 )- (where (ppy)- =2-phenylpyridinate and biq=2,2'-biquinoline). The LECs fabricated with PFBT, the benzothiadiazole content of which is 0.01 mol %, showed blue electroluminescence (EL) emission originating from the fluorene segments and green EL emission from the benzothiadiazole units simultaneously. White LECs were then realized by adding red-emitting Ir complexes as guest molecules to the blue-green-emitting PFBT. By optimizing the proportions of the PFBT and Ir complexes in the active layers (PFBT/[Ir(ppy)2 (biq)]+ (PF6 )- =1:0.2 (mass ratio)), white-light emission with Commission Internationale de l'Eclairage (CIE) coordinates of (0.29, 0.34) and a very high CRI value of 91.5 was achieved through RGB color-mixing. It was noted that the emission mechanism was based on Förster resonance energy transfer and Dexter energy transfer from excited PFBT to [Ir(ppy)2 (biq)]+ (PF6 )- . The utilization of LECs based on blue-green FCPs and red Ir complexes looks very promising for the prospect of realizing white-light-emitting devices with very high CRIs.
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Affiliation(s)
- Yoshinori Nishikitani
- Department of Advanced Science and Engineering, Waseda University, 3-4-1, Ookubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Tetsuyuki Cho
- Department of Advanced Science and Engineering, Waseda University, 3-4-1, Ookubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Soichi Uchida
- High Performance Materials Company, JXTG Nippon Oil & Energy Corporation, 8, Chidori-cho, Naka-ku, Yokohama, 231-0815, Japan
| | - Suzushi Nishimura
- High Performance Materials Company, JXTG Nippon Oil & Energy Corporation, 8, Chidori-cho, Naka-ku, Yokohama, 231-0815, Japan
| | - Kenichi Oyaizu
- Department of Advanced Science and Engineering, Waseda University, 3-4-1, Ookubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Hiroyuki Nishide
- Department of Advanced Science and Engineering, Waseda University, 3-4-1, Ookubo, Shinjuku-ku, Tokyo, 169-8555, Japan
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25
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Fang M, Fu L, Correia SFH, Ferreira RAS, Carlos LD. Highly Efficient Luminescent Polycarboxylate Lanthanide Complexes Incorporated into Di-Ureasils by an In-Situ Sol-Gel Process. Polymers (Basel) 2018; 10:polym10040434. [PMID: 30966469 PMCID: PMC6415227 DOI: 10.3390/polym10040434] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/29/2018] [Accepted: 04/10/2018] [Indexed: 11/23/2022] Open
Abstract
In order to prepare efficient luminescent organic–inorganic hybrid materials embedded with a lanthanide (Ln3+) complex with polycarboxylate ligands, Ln3+-doped di-ureasils with 4,4-oxybis(benzoic acid) and 1,10-phenanthroline ligands were synthesized via an in-situ sol–gel route. The resulting hybrids were structurally, thermally, and optically characterized. The energy levels of the ligands and the host-to-ion and ligand-to-ion energy transfer mechanisms were investigated (including DFT/TD–DFT calculations). The results show that these Ln3+-based di-ureasil hybrids exhibit promising luminescent features, e.g., Eu3+-based materials are bright red emitters displaying quantum yields up to 0.50 ± 0.05. The luminescent color can be fine-tuned either by selection of adequate Ln3+ ions or by variation of the excitation wavelength. Accordingly, white light emission with CIE coordinates of (0.33, 0.35) under 310 nm irradiation was obtained.
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Affiliation(s)
- Ming Fang
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Lianshe Fu
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Sandra F H Correia
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Rute A S Ferreira
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Luís D Carlos
- Department of Physics, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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26
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Zhu Q, Zhang L, Van Vliet K, Miserez A, Holten-Andersen N. White Light-Emitting Multistimuli-Responsive Hydrogels with Lanthanides and Carbon Dots. ACS Appl Mater Interfaces 2018; 10:10409-10418. [PMID: 29481036 DOI: 10.1021/acsami.7b17016] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Polymers that confer changes in optical properties in response to chemical or mechanical cues offer diverse sensing applications, particularly if this stimuli response is accessible in humid or aqueous environments. In this study, luminescent hydrogels were fabricated using a facile aqueous process by incorporating lanthanide ions and carbon dots (CD) into a network of polyacrylamide and poly(acrylic acid). White luminescence was obtained by tuning the balance of blue-light-emitting CD to green- and red-light-emitting lanthanide ions. Exploiting the combined specific sensitivities of the different emitters, the luminescent hydrogel showed chromic responsiveness to multiple stimuli, including pH, organic vapors, transition-metal ions, and temperature. The white-light-emitting hydrogel was also stretchable with a fracture strain of 400%. We envision this photoluminescent hydrogel to be a versatile and multifunctional material for chemical and environmental sensing.
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Affiliation(s)
- Qingdi Zhu
- BioSystems and Micromechanics Interdisciplinary Research Group , Singapore-MIT Alliance for Research and Technology (SMART) Centre, CREATE , 138602 , Singapore
| | - Lihong Zhang
- Biological & Biomimetic Material Laboratory, School of Materials Science & Engineering , Nanyang Technological University , 637553 , Singapore
| | - Krystyn Van Vliet
- BioSystems and Micromechanics Interdisciplinary Research Group , Singapore-MIT Alliance for Research and Technology (SMART) Centre, CREATE , 138602 , Singapore
| | - Ali Miserez
- Biological & Biomimetic Material Laboratory, School of Materials Science & Engineering , Nanyang Technological University , 637553 , Singapore
- School of Biological Sciences , Nanyang Technological University , 637551 , Singapore
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27
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Sola-Llano R, Martínez-Martínez V, Furukawa S, Takashima Y, López-Arbeloa I. Tuning Light Emission towards White Light from a Naphthalenediimide-Based Entangled Metal-Organic Framework by Mixing Aromatic Guest Molecules. Polymers (Basel) 2018; 10:E188. [PMID: 30966224 PMCID: PMC6415143 DOI: 10.3390/polym10020188] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/09/2018] [Accepted: 02/11/2018] [Indexed: 11/16/2022] Open
Abstract
Taking advantage of the outstanding properties of a naphthalenediimide-based entangled porous coordination polymer, a simple strategy for the achievement of white light emission is herein presented. The dynamic structural transformation of the [Zn₂(bdc)₂(dpNDI)]n metal-organic framework enhances the interactions with aryl-guests giving rise to different luminescence colors upon UV (ultraviolet) illumination. Thus, through the rational selection of those small aromatic guest molecules with different electron donor substituents at the appropriate proportion, the emission color was tuned by mixture ratio of guest molecules and even white light emission was achieved. Furthermore, domains in large crystals with a complementary response to linearly polarized light were noticed.
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Affiliation(s)
- Rebeca Sola-Llano
- Departamento de Química Física, Universidad del País Vasco, UPV/EHU, Apartado 644, 48080 Bilbao, Spain.
| | | | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Kyoto 606-8501, Japan.
| | - Yohei Takashima
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojimaminamimachi, Chuo-ku, Kobe 650-0047, Japan.
| | - Iñigo López-Arbeloa
- Departamento de Química Física, Universidad del País Vasco, UPV/EHU, Apartado 644, 48080 Bilbao, Spain.
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28
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Makarov SV, Sinev IS, Milichko VA, Komissarenko FE, Zuev DA, Ushakova EV, Mukhin IS, Yu YF, Kuznetsov AI, Belov PA, Iorsh IV, Poddubny AN, Samusev AK, Kivshar YS. Nanoscale Generation of White Light for Ultrabroadband Nanospectroscopy. Nano Lett 2018; 18:535-539. [PMID: 29244507 DOI: 10.1021/acs.nanolett.7b04542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Achieving efficient localization of white light at the nanoscale is a major challenge due to the diffraction limit, and nanoscale emitters generating light with a broadband spectrum require complicated engineering. Here we suggest a simple, yet highly efficient, nanoscale white-light source based on a hybrid Si/Au nanoparticle with ultrabroadband (1.3-3.4 eV) spectral characteristics. We incorporate this novel source into a scanning-probe microscope and observe broadband spectrum of photoluminescence that allows fast mapping of local optical response of advanced nanophotonic structures with submicron resolution, thus realizing ultrabroadband near-field nanospectroscopy.
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Affiliation(s)
- S V Makarov
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - I S Sinev
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - V A Milichko
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - F E Komissarenko
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - D A Zuev
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - E V Ushakova
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - I S Mukhin
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - Y F Yu
- Data Storage Institute, A*STAR (Agency for Science, Technology and Research) , 138634, Singapore
| | - A I Kuznetsov
- Data Storage Institute, A*STAR (Agency for Science, Technology and Research) , 138634, Singapore
| | - P A Belov
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - I V Iorsh
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - A N Poddubny
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
- Ioffe Institute , St. Petersburg 194021, Russia
| | - A K Samusev
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
| | - Yu S Kivshar
- Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg 197101, Russia
- Nonlinear Physics Centre, Australian National University , Canberra ACT 2601, Australia
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29
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Wang A, Cui L, Debnath S, Dong Q, Yan X, Zhang X, Ulijn RV, Bai S. Tuning Supramolecular Structure and Functions of Peptide bola-Amphiphile by Solvent Evaporation-Dissolution. ACS Appl Mater Interfaces 2017; 9:21390-21396. [PMID: 28590718 DOI: 10.1021/acsami.7b05661] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Solvent molecules significantly affect the supramolecular self-assembly, for example, in forming solvent-bridged hydrogen bonding networks. Even small changes in solvent composition can have dramatic impact on supramolecular assembly. Herein, we demonstrate the use of trace solvents (as low as 0.04%) to tune the morphology and consequent functions of supramolecular nanostructures based on an aromatic peptide bola-amphiphile. Specifically, perylene bisimide-(di)glycine-tyrosine (PBI-[GY]2) bola-amphiphile was shown to give rise to red-emitting nanofibers when assembled in water, while exposure to trace organic solvents such as tetrahydrofuran (THF) and others via solvent-evaporation followed by aqueous assembly gave rise to white-light-emitting nanospheres. Differential hydrogen bonding between water (donor and acceptor) and THF (acceptor only) impacts supramolecular organization, which was verified using a density functional theory (DFT) simulation. The tunable consequent surface hydrophobicity was utilized in staining the cytoplasm and membrane of cells, respectively. The trace-solvent effect achieved through evaporation-dissolution provides a methodology to mediate the morphologies and consequent functions for supramolecular biomaterials controlled by the self-assembly pathway.
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Affiliation(s)
- Anhe Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , 100190 Beijing, China
| | - Lingyun Cui
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , 100190 Beijing, China
| | - Sisir Debnath
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde , Glasgow G1 1XL, United Kingdom
| | - Qianqian Dong
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , 100190 Beijing, China
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , 100190 Beijing, China
| | - Xi Zhang
- MOE Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , 100084 Beijing, China
| | - Rein V Ulijn
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde , Glasgow G1 1XL, United Kingdom
- Advanced Science Research Center (ASRC), City University of New York , New York, New York 10031, United States
- Hunter College , Department of Chemistry and Biochemistry, 695 Park Avenue, New York, New York 10065, United States
- The Graduate Center of the City University of New York , New York, New York 10016, United States
| | - Shuo Bai
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , 100190 Beijing, China
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30
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Börgardts M, Müller TJJ. Energy down converting organic fluorophore functionalized mesoporous silica hybrids for monolith-coated light emitting diodes. Beilstein J Org Chem 2017; 13:768-778. [PMID: 28546833 PMCID: PMC5433209 DOI: 10.3762/bjoc.13.76] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 04/05/2017] [Indexed: 12/04/2022] Open
Abstract
The covalent attachment of organic fluorophores in mesoporous silica matrices for usage as energy down converting phosphors without employing inorganic transition or rare earth metals is reported in this article. Triethoxysilylpropyl-substituted derivatives of the blue emitting perylene, green emitting benzofurazane, and red emitting Nile red were synthesized and applied in the synthesis of mesoporous hybrid materials by postsynthetic grafting to commercially available MCM-41. These individually dye-functionalized hybrid materials are mixed in variable ratios to furnish a powder capable of emitting white light with CIE chromaticity coordinates of x = 0.33, y = 0.33 and an external quantum yield of 4.6% upon irradiation at 410 nm. Furthermore, as a proof of concept two different device setups of commercially available UV light emitting diodes, are coated with silica monoliths containing the three triethoxysilylpropyl-substituted fluorophore derivatives. These coatings are able to convert the emitted UV light into light with correlated color temperatures of very cold white (41100 K, 10700 K) as well as a greenish white emission with correlated color temperatures of about 5500 K.
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Affiliation(s)
- Markus Börgardts
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Thomas J J Müller
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
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31
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Das S, Pramanik S, Chatterjee S, Das PP, Devi PS, Suresh Kumar G. Selective Binding of Genomic Escherichia coli DNA with ZnO Leads to White Light Emission: A New Aspect of Nano-Bio Interaction and Interface. ACS Appl Mater Interfaces 2017; 9:644-657. [PMID: 28029245 DOI: 10.1021/acsami.6b11109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Here, we report for the first time, a novel and intriguing application of deoxyribonucleic acid (DNA) in the area of optics by demonstrating white light emission by tuning the emission of a nanomaterial, ZnO rods, exhibiting surface defects, in the presence of genomic Escherichia coli DNA with a comparatively high quantum efficiency. In order to understand the DNA specificity, we have also studied the interaction of ZnO with CT, and ML DNA, ss EC DNA, synthetic polynucleotides and different mononucleosides and bases. Further, in order to understand the effect of particle shape and defects present in ZnO, we have also extended our study with ZnO rods prepared at higher temperature exhibiting red emission and ZnO particles exhibiting yellow emission. Interestingly, none of the above studies resulted in white light emission from ZnO-DNA complex. Our studies unequivocally confirmed that the concentration and the nature of DNA and ZnO together plays a crucial role in obtaining CIE coordinates (0.33, 0.33) close to white light. The much enhanced melting temperature (Tm) of EC DNA and the energetics factors confirm enhanced hydrogen bonding of ZnO with EC DNA leading to a new emission band. Our experimental observations not only confirm the selective binding of ZnO to EC DNA but also open a new perspective for developing energy saving light emitting materials through nano-bio interactions.
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Affiliation(s)
- Sumita Das
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata-700032, India
| | - Srikrishna Pramanik
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata-700032, India
| | - Sabyasachi Chatterjee
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology , Kolkata-700032, India
| | - Partha Pratim Das
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata-700032, India
| | | | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology , Kolkata-700032, India
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Ilaiyaraja P, Mocherla PSV, Srinivasan TK, Sudakar C. Synthesis of Cu-Deficient and Zn-Graded Cu-In-Zn-S Quantum Dots and Hybrid Inorganic-Organic Nanophosphor Composite for White Light Emission. ACS Appl Mater Interfaces 2016; 8:12456-12465. [PMID: 27135154 DOI: 10.1021/acsami.6b02175] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Cu-deficient graded-zinc Cu-In-Zn-S (CIZS) quantum dots (QDs) were synthesized by a two-step solvothermal method. These CIZS QDs exhibited size and composition tunable photoluminescence characteristics with emission color tunable from greenish-yellow to orange to red with a relatively high quantum yield between 45 and 60%. Novel white-light-emitting (WLE) hybrid composite is fabricated by integrating the blue-emissive 1,4-bis-2-(5-phenyl oxazolyl)-benzene (POPOP) organic fluorophore and quaternary CIZS inorganic QDs. Integrating CIZS QDs with POPOP fluorophore resulted in series of tunable emission colors with CIE coordinates lying in a straight line between the coordinates of the end member. WLE was shown for hybrid mixture comprising 0.5 nM of POPOP and 3 mg/mL of CIZS QDs with color coordinates (0.3312, 0.3324). Thin films of this hybrid mixture in PMMA matrix coated on UV-LED or on glass substrates with UV backlit light also showed broadband WLE with ideal CIE color coordinates of (0.34, 0.33), high color-rendering index value of 92, and correlated color temperature value of 5143 K. The hybrid composite exhibit Forster resonance energy transfer cascading from POPOP to CIZS which results in emission covering the entire visible spectral range. POPOP and CIZS QDs hybrid composite is a versatile material for WLED applications.
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Affiliation(s)
- P Ilaiyaraja
- Multifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology Madras , Chennai-600036, India
| | - Pavana S V Mocherla
- Multifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology Madras , Chennai-600036, India
| | - T K Srinivasan
- Electronic Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research , Kalpakkam-603106, India
| | - C Sudakar
- Multifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology Madras , Chennai-600036, India
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Bové H, Steuwe C, Fron E, Slenders E, D'Haen J, Fujita Y, Uji-I H, vandeVen M, Roeffaers M, Ameloot M. Biocompatible Label-Free Detection of Carbon Black Particles by Femtosecond Pulsed Laser Microscopy. Nano Lett 2016; 16:3173-8. [PMID: 27104759 DOI: 10.1021/acs.nanolett.6b00502] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Although adverse health effects of carbon black (CB) exposure are generally accepted, a direct, label-free approach for detecting CB particles in fluids and at the cellular level is still lacking. Here, we report nonincandescence related white-light (WL) generation by dry and suspended carbon black particles under illumination with femtosecond (fs) pulsed near-infrared light as a powerful tool for the detection of these carbonaceous materials. This observation is done for four different CB species with diameters ranging from 13 to 500 nm, suggesting this WL emission under fs near-infrared illumination is a general property of CB particles. As the emitted radiation spreads over the whole visible spectrum, detection is straightforward and flexible. The unique property of the described WL emission allows optical detection and unequivocal localization of CB particles in fluids and in cellular environments while simultaneously colocalizing different cellular components using various specific fluorophores as shown here using human lung fibroblasts. The experiments are performed on a typical multiphoton laser-scanning microscopy platform, widely available in research laboratories.
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Affiliation(s)
- Hannelore Bové
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590 Diepenbeek, Belgium
| | | | | | - Eli Slenders
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590 Diepenbeek, Belgium
| | - Jan D'Haen
- Institute for Material Research, Hasselt University , Wetenschapspark 1, 3950 Diepenbeek, Belgium
| | | | - Hiroshi Uji-I
- Research Institute for Electronic Science, Hokkaido University , N20W10, Kita-Ward Sapporo 001-0020, Japan
| | - Martin vandeVen
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590 Diepenbeek, Belgium
| | | | - Marcel Ameloot
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590 Diepenbeek, Belgium
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Mishra S, Kshatri DS, Khare A, Tiwari S. Nanocrystalline SrS:Ce 3+ system for the generation of white light-emitting diodes. LUMINESCENCE 2016; 31:1427-1432. [PMID: 27020923 DOI: 10.1002/bio.3124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 02/05/2016] [Accepted: 02/14/2016] [Indexed: 11/11/2022]
Abstract
Nanocrystalline SrS phosphors doped with Ce3+ ions at different concentrations (0.5, 1, 1.5 and 2 mol%) are synthesized via the solid-state diffusion method (SSDM), which is suitable for the large-scale production of phosphors in industrial applications. The as-prepared samples are characterized using an X-ray diffraction (XRD) technique, field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and energy-dispersive X-ray (EDX) analysis. The optical properties of these phosphors are analyzed using reflectance spectra, photoluminescence spectra and afterglow decay curves. The cubic structure of the SrS phosphor is confirmed by XRD analysis and the crystallite size calculated by Scherer's formula using XRD data shows the nanocrystalline nature of the phosphors. No phase change is observed with increasing concentrations of Ce3+ ions. The surface morphology of the prepared phosphors is determined by FESEM, which shows a sphere-like structure and good connectivity of the grains. The authenticity of the formation of nanocrystalline phosphors is examined by HRTEM analysis. Elemental compositional information for the prepared phosphors is gathered by EDX analysis. Photoluminescence studies reveal that the emission spectra of the prepared phosphor shows broad band emission centered at 458 and 550 nm due to the transition of electrons from the 5d → 4f energy levels. The afterglow decay characteristics of different as-synthesized SrS:Ce3+ nanophosphors are conceptually described. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Shubhra Mishra
- Department of Physics, National Institute of Technology, Raipur, 492 010, India
| | - D S Kshatri
- Department of Physics, Shri Shankaracharya Institute of Professional Management and Technology, Raipur, 492 015, India
| | - Ayush Khare
- Department of Physics, National Institute of Technology, Raipur, 492 010, India
| | - Sanjay Tiwari
- School of Studies in Electronics and Photonics, Pt. Ravishankar Shukla University, Raipur, 492 010, India
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Bhandari S, Pramanik S, Khandelia R, Chattopadhyay A. Gold Nanocluster and Quantum Dot Complex in Protein for Biofriendly White-Light-Emitting Material. ACS Appl Mater Interfaces 2016; 8:1600-5. [PMID: 26741861 DOI: 10.1021/acsami.6b00039] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report the synthesis of a biofriendly highly luminescent white-light-emitting nanocomposite. The composite consisted of Au nanoclusters and ZnQ2 complex (on the surface of ZnS quantum dots) embedded in protein. The combination of red, green, and blue luminescence from clusters, complex, and protein, respectively, led to white light generation.
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Affiliation(s)
- Satyapriya Bhandari
- Department of Chemistry and §Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, Assam, India
| | - Sabyasachi Pramanik
- Department of Chemistry and §Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, Assam, India
| | - Rumi Khandelia
- Department of Chemistry and §Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, Assam, India
| | - Arun Chattopadhyay
- Department of Chemistry and §Centre for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati 781039, Assam, India
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Zhou J, Sun G, Zhao H, Pan X, Zhang Z, Fu Y, Mao Y, Xie E. Tunable white light emission by variation of composition and defects of electrospun Al2O3-SiO2 nanofibers. Beilstein J Nanotechnol 2015; 6:313-320. [PMID: 25821669 PMCID: PMC4362508 DOI: 10.3762/bjnano.6.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
Composite nanofibers consisting of Al2O3-SiO2 were prepared by electrospinning in combination with post-calcination in air. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy were used to investigate the crystalline phase and microstructure of the composite nanofibers. Photoluminescence experiments indicated that the resulting white light emission can be tuned by the relative intensity of the individual spectral components, which are related to the individual defects such as: violet-blue emission from O defects, green emission from ≡Si(Al)-O-C∙=O, and red emission from intersystem radiative crossing. White light emission was realized at a Al/(Al-Si) ratio of 40 and 60 mol %. This research may offer a deeper understanding of the preparation of efficient and environmentally friendly, white luminescence materials.
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Affiliation(s)
- Jinyuan Zhou
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
| | - Gengzhi Sun
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Hao Zhao
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
| | - Xiaojun Pan
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
| | - Zhenxing Zhang
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
| | - Yujun Fu
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
| | - Yanzhe Mao
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
| | - Erqing Xie
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China
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Katiyar AK, Sinha AK, Manna S, Ray SK. Fabrication of Si/ZnS radial nanowire heterojunction arrays for white light emitting devices on Si substrates. ACS Appl Mater Interfaces 2014; 6:15007-15014. [PMID: 25137439 DOI: 10.1021/am5028605] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Well-separated Si/ZnS radial nanowire heterojunction-based light-emitting devices have been fabricated on large-area substrates by depositing n-ZnS film on p-type nanoporous Si nanowire templates. Vertically oriented porous Si nanowires on p-Si substrates have been grown by metal-assisted chemical etching catalyzed using Au nanoparticles. Isolated Si nanowires with needle-shaped arrays have been made by KOH treatment before ZnS deposition. Electrically driven efficient white light emission from radial heterojunction arrays has been achieved under a low forward bias condition. The observed white light emission is attributed to blue and green emission from the defect-related radiative transition of ZnS and Si/ZnS interface, respectively, while the red arises from the porous surface of the Si nanowire core. The observed white light emission from the Si/ZnS nanowire heterojunction could open up the new possibility to integrate Si-based optical sources on a large scale.
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Affiliation(s)
- Ajit K Katiyar
- Department of Physics, Indian Institute of Technology , Kharagpur, West Bengal 721302, India
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Ni WX, Li M, Zheng J, Zhan SZ, Qiu YM, Ng SW, Li D. Approaching white-light emission from a phosphorescent trinuclear gold(I) cluster by modulating its aggregation behavior. Angew Chem Int Ed Engl 2013; 52:13472-6. [PMID: 24254790 DOI: 10.1002/anie.201308135] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Xiu Ni
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials, Shantou University, Guangdong 515063 (P. R. China)
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