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Sousa DA, Berberan-Santos MN, Prata JV. Are "Carbon Dots" Always Carbon Dots? Evidence for their Supramolecular Nature from Structural and Dynamic Studies in Solution and in the Pure Solid. Chemistry 2024; 30:e202302955. [PMID: 37943001 DOI: 10.1002/chem.202302955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/10/2023]
Abstract
A model for the morphology (size, shape, and crystallinity) of carbon dots (CDs) in the solid state consistent with the observed photoluminescence in solution is proposed herein. Overwhelming evidence has been collected that links the data coming from solid-state analysis (high-resolution transmission electron microscopy (HRTEM), atomic force microscopy (AFM), and matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS)) to that of solution (pulsed-field gradient (PFG)-NMR spectroscopy, time-resolved fluorescence anisotropy (TRFA), and steady-state/time-resolved fluorescence), allowing the establishment of an overall structural model for CDs. According to this model, the so-called carbon dots, observed under HRTEM imaging, are in fact supramolecular organized structures dynamically assembled from small to medium-sized molecular species when the solvent is removed to give the solid form. In this way, the imaged nanoparticles (TEM/AFM) are not covalently bound entities formed during the synthetic process, but instead supramolecular entities formed by noncovalent interactions. These particles, if at all present in solution, have the form of loose associations of relatively small molecules. This study was conducted on CDs obtained from the hydrothermal carbonization (HTC) of a biomass waste (olive wet pomace).
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Affiliation(s)
- Diogo A Sousa
- Department of Chemical Engineering Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, 1959-007, Lisbon, Portugal
- BSIRG-iBB-Institute for Bioengineering and Biosciences, and Associate Laboratory i4HB - Institute for Health and Bioeconomy Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal
| | - Mário N Berberan-Santos
- BSIRG-iBB-Institute for Bioengineering and Biosciences, and Associate Laboratory i4HB - Institute for Health and Bioeconomy Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal
| | - José V Prata
- Department of Chemical Engineering Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, 1959-007, Lisbon, Portugal
- CQ-VR-Centro de Química-Vila Real, Universidade de Trás-os-Montes e Alto Douro, 5001-801, Vila Real, Portugal
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2
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Wang D, Chen Y, Xia T, Claudino M, Melendez A, Ni X, Dong C, Liu Z, Yang J. Citric Acid-Based Intrinsic Band-Shifting Photoluminescent Materials. RESEARCH (WASHINGTON, D.C.) 2023; 6:0152. [PMID: 37256199 PMCID: PMC10226408 DOI: 10.34133/research.0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/27/2023] [Indexed: 06/01/2023]
Abstract
Citric acid, an important metabolite with abundant reactive groups, has been demonstrated as a promising starting material to synthesize diverse photoluminescent materials including small molecules, polymers, and carbon dots. The unique citrate chemistry enables the development of a series of citric acid-based molecules and nanomaterials with intriguing intrinsic band-shifting behavior, where the emission wavelength shifts as the excitation wavelength increases, ideal for chromatic imaging and many other applications. In this review, we discuss the concept of "intrinsic band-shifting photoluminescent materials", introduce the recent advances in citric acid-based intrinsic band-shifting materials, and discuss their potential applications such as chromatic imaging and multimodal sensing. It is our hope that the insightful and forward-thinking discussion in this review will spur the innovation and applications of the unique band-shifting photoluminescent materials.
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Affiliation(s)
- Dingbowen Wang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Yizhu Chen
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Tunan Xia
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Mariana Claudino
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Allison Melendez
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Xingjie Ni
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Cheng Dong
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Zhiwen Liu
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
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3
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Lu M, Pan C, Qin X, Wu M. Silicon Nanoparticle-Based Ratiometric Fluorescence Probes for Highly Sensitive and Visual Detection of VB 2. ACS OMEGA 2023; 8:14499-14508. [PMID: 37125092 PMCID: PMC10134237 DOI: 10.1021/acsomega.3c00025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 04/05/2023] [Indexed: 05/03/2023]
Abstract
In this work, blue fluorescent silicon nanoparticles (SiNPs) were prepared by a simple one-step hydrothermal method using (3-aminopropyl) triethoxy silane (APTES) and eriochrome black T as raw materials. The SiNPs showed favorable water solubility, thermal stability, pH stability, salt tolerance, and photobleaching resistance. At an excitation wavelength of 376 nm, the SiNPs emitted bright blue fluorescence at 460 nm. In the presence of vitamin B2 (VB2), the fluorescence intensity (FL intensity) of the SiNPs at 460 nm decreased obviously, and a new peak appeared at 521 nm. Based on this, a novel ratiometric fluorescence method was established for VB2 detection. There was a good linear relationship between the fluorescence intensity ratio (F 521/F 460) and VB2 concentration from 0.5 to 60 μM with a detection limit of 135 nM. This method was successfully applied to detect VB2 content in the samples of vitamin B2 drugs and beverages. Additionally, a simple paper sensor based on the SiNPs was designed to visualize detection of VB2. With the support of color recognition software on a smartphone, the visual quantitative analysis of VB2 was realized, ranging from 40 to 800 μM.
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Yang S, Li Y, Chen L, Wang H, Shang L, He P, Dong H, Wang G, Ding G. Fabrication of Carbon-Based Quantum Dots via a "Bottom-Up" Approach: Topology, Chirality, and Free Radical Processes in "Building Blocks". SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2205957. [PMID: 36610043 DOI: 10.1002/smll.202205957] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The discovery of carbon-based quantum dots (CQDs) has allowed opportunities for fluorescence bioimaging, tumor diagnosis and treatment, and photo-/electro-catalysis. Nevertheless, in the existing reviews related to the "bottom-up" approaches, attention is mainly paid to the applications of CQDs but not the formation mechanism of CQDs, which mainly derived from the high complexities during the synthesis of CQDs. Among the various synthetic methods, using small molecules as "building blocks", the development of a "bottom-up" approach has promoted the structural design, modulation of the photoluminescence properties, and control of the interfacial properties of CQDs. On the other hand, many works have demonstrated the "building blocks"-dependent properties of CQDs. In this review, from one of the most important variables, the relationships among intrinsic properties of "building blocks" and photoluminescence properties of CQDs are summarized. The topology, chirality, and free radical process are selected as descriptors for the intrinsic properties of "building blocks". This review focuses on the induction and summary of recent research results from the "bottom-up" process. Moreover, several empirical rules pertaining thereto are also proposed.
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Affiliation(s)
- Siwei Yang
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yongqiang Li
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liangfeng Chen
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hang Wang
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liuyang Shang
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Peng He
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Dong
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Gang Wang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China
| | - Guqiao Ding
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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5
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Astafiev AA, Shakhov AM, Tskhovrebov AG, Shatov A, Gulin A, Shepel D, Nadtochenko VA. Nitrogen-Doped Carbon Nanodots Produced by Femtosecond Laser Synthesis for Effective Fluorophores. ACS OMEGA 2022; 7:6810-6823. [PMID: 35252675 PMCID: PMC8892850 DOI: 10.1021/acsomega.1c06413] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 02/03/2022] [Indexed: 06/04/2023]
Abstract
Understanding the effect of heteroatom doping is crucial for the design of carbon nanodots (CNDs) with enhanced luminescent properties for fluorescence imaging and light-emitting devices. Here, we study the effect and mechanisms of luminescence enhancement through nitrogen doping in nanodots synthesized by the bottom-up route in an intense femtosecond laser field using the comparative analysis of CNDs obtained from benzene and pyridine. We demonstrate that laser irradiation of aromatic compounds produces hybrid nanoparticles consisting of a nanocrystalline core with a shell of surface-bonded aromatic rings. These nanoparticles exhibit excitation-dependent visible photoluminescence typical for CNDs. Incorporation of nitrogen into pyridine-derived CNDs enhances their luminescence characteristics through the formation of small pyridine-based fluorophores peripherally bonded to the nanoparticles. We identify oxidation of surface pyridine rings as a mechanism of formation of several distinct blue- and green-emitting fluorophores in nanodots, containing pyridine moieties. These findings shed additional light on the nature and formation mechanism of effective fluorophores in nitrogen-doped carbon nanodots produced by the bottom-up route.
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Affiliation(s)
- Artyom A. Astafiev
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- Chemistry
Department, Moscow State University, 119991 Moscow, Russian Federation
| | - Aleksander M. Shakhov
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- Chemistry
Department, Moscow State University, 119991 Moscow, Russian Federation
| | - Alexander G. Tskhovrebov
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- Research
Institute of Chemistry, People’s
Friendship University of Russia, 117198 Moscow, Russian Federation
| | - Alexander Shatov
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Alexander Gulin
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Denis Shepel
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Victor A. Nadtochenko
- Bio&Nanophotonics
Lab, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- Chemistry
Department, Moscow State University, 119991 Moscow, Russian Federation
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6
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Ashkar MA, Chandhru M, Sundar M, Kutti Rani S, Vasimalai N. The rapid synthesis of intrinsic green-fluorescent poly(pyrogallol)-derived carbon dots for amoxicillin drug sensing in clinical samples. NEW J CHEM 2022. [DOI: 10.1039/d2nj03915j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Detection of the amoxicillin drug using pyrogallol-derived carbon dots.
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Affiliation(s)
- M. A. Ashkar
- Department of Chemistry, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai-600 048, India
| | - M. Chandhru
- Department of Chemistry, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai-600 048, India
| | - M. Sundar
- Research, Science Academy of India, Madambakkam, Chennai-603 202, India
| | - S. Kutti Rani
- Department of Chemistry, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai-600 048, India
| | - N. Vasimalai
- Department of Chemistry, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai-600 048, India
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7
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Mahani M, Mahmoudi F, Fassihi J, Hasani Z, Divsar F. Carbon dots-embedded N-acetylneuraminic acid and glucuronic acid-imprinted polymers for targeting and imaging of cancer cells. Mikrochim Acta 2021; 188:224. [PMID: 34101046 DOI: 10.1007/s00604-021-04876-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/25/2021] [Indexed: 11/26/2022]
Abstract
Diagnosis, treatment, and prediction of cancer progression require new targeting agents to specifically target cell surface receptors. Herein, we demonstrated fluorescent carbon quantum dots-molecularly imprinted polymer (CQD-MIP) for selective targeting and imaging of cancer cells. Carbon quantum dots (CQDs) were synthesized and characterized. The synthesized CQDs had average size of 1.5 nm and show intense fluorescence emission at wavelength of 450 nm with excitation at 370 nm. CQD-MIP nanoparticles imprinted with N-acetylneuraminic acid and glucuronic acid were prepared and characterized. CQD-MIPs were successfully applied for selective targeting and imaging of MCF-7, HepG-2, and NIH-3T3 cell lines. Non-imprinted polymer (NIP) showed no binding properties toward a target molecule. Non-imprinted polymer (NIP) and non-cancerous human cell lines were used for controlling the imprinting and targeting effects, respectively. Acceptable results were obtained with imprinted polymers on cancer cells.
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Affiliation(s)
- Mohamad Mahani
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Graduate University of Advanced Technology, Kerman, 7631818356, Iran.
| | - Firouze Mahmoudi
- Department of Nanotechnology, Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran
| | | | - Zahra Hasani
- Department of New Materials, Institute of Science, High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, 7631133131, Iran
| | - Faten Divsar
- Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran
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8
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Horst FH, Rodrigues CVDS, Carvalho PHPR, Leite AM, Azevedo RB, Neto BAD, Corrêa JR, Garcia MP, Alotaibi S, Henini M, Chaves SB, Rodrigues MO. From cow manure to bioactive carbon dots: a light-up probe for bioimaging investigations, glucose detection and potential immunotherapy agent for melanoma skin cancer. RSC Adv 2021; 11:6346-6352. [PMID: 35423156 PMCID: PMC8694864 DOI: 10.1039/d0ra10859f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 01/18/2021] [Indexed: 02/04/2023] Open
Abstract
Bioactive carbon dots (C-dots) with ca. 4 nm were successfully produced with singular photophysical properties, low-toxicity and interesting immunological response. The optical properties of the C-dots were investigated and the "light-up" behaviour enabled them to be explored in glucose detection and bioimaging experiments (mitochondrial selective probe). C-dots were not selective to the tumour region and several fluorescent spots were visualized spread on animal bodies. The histology investigations showed that cancer-bearing mice treated with C-dots presented a large number of regions with necrosis and inflammatory infiltrates, which were not identified for cancer-bearing mice without the treatment. These results suggested that C-dots have the potential to be explored as an immune therapy agent for melanoma skin cancer.
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Affiliation(s)
- Frederico Hillesheim Horst
- Department of Genetics and Morphology, Institute of Biological Sciences Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - Carime Vitória da Silva Rodrigues
- LIMA-Laboratório de Inorgânica e Materiais, University of Brasilia Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | | | - Amanda Monteiro Leite
- LIMA-Laboratório de Inorgânica e Materiais, University of Brasilia Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - Ricardo Bentes Azevedo
- Department of Genetics and Morphology, Institute of Biological Sciences Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - Brenno A D Neto
- Laboratory of Medicinal & Technological Chemistry, University of Brasilia Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - José Raimundo Corrêa
- Laboratory of Medicinal & Technological Chemistry, University of Brasilia Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - Mônica Pereira Garcia
- Department of Genetics and Morphology, Institute of Biological Sciences Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - Saud Alotaibi
- School of Physics and Astronomy, Nottingham University Nottingham NG72RD UK
| | - Mohamed Henini
- School of Physics and Astronomy, Nottingham University Nottingham NG72RD UK
| | - Sacha Braun Chaves
- Department of Genetics and Morphology, Institute of Biological Sciences Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
| | - Marcelo Oliveira Rodrigues
- LIMA-Laboratório de Inorgânica e Materiais, University of Brasilia Campus Universitário Darcy Ribeiro Brasília-DF CEP 70910900 Brazil
- School of Physics and Astronomy, Nottingham University Nottingham NG72RD UK
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9
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Divya VV, Suresh CH. Design and DFT study of nitrogen-rich donor systems for improved photovoltaic performance in dye-sensitized solar cells. NEW J CHEM 2021. [DOI: 10.1039/d1nj00881a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Donor modifications, especially through N-annulation, for enhancing the structure–performance relationship of D–π–A systems for DSSC applications.
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Affiliation(s)
- Velayudhan V. Divya
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
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10
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Divya VV, Suresh CH. Tuning the donating strength of dye sensitizers using molecular electrostatic potential analysis. NEW J CHEM 2021. [DOI: 10.1039/d0nj04797j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The significance of electron releasing groups at the donors of D–π–A systems for improving the donating strength and power conversion efficiency of photosensitizers.
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Affiliation(s)
- Velayudhan V. Divya
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
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Wu L, Long R, Li T, Tang C, Tong X, Guo Y, Shi S, Xiang H, Tong C. One-pot fabrication of dual-emission and single-emission biomass carbon dots for Cu 2+ and tetracycline sensing and multicolor cellular imaging. Anal Bioanal Chem 2020; 412:7481-7489. [PMID: 32833074 DOI: 10.1007/s00216-020-02882-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/06/2020] [Accepted: 08/13/2020] [Indexed: 01/09/2023]
Abstract
Dual-emission and single-emission carbon dots (DCDs and SCDs) have been simultaneously synthesized by one-pot solvothermal treatment of leek. Different graphitization and surface functionalization were responsible for their distinction in fluorescence characteristics. DCDs with an average size of 5.6 nm exhibited two emissions at 489 and 676 nm under 420-nm excitation. Complexation between DCDs' surface porphyrins and Cu2+ led to quenching of the 676-nm emission, which resulted in the ratiometric determination of Cu2+ with a limit of detection (LOD) of 0.085 μM. SCDs, containing additional sulfur element (0.50%) with an average size of 7.7 nm, presented a single emission at 440 nm under 365-nm excitation. The static quenching and inner filter effects between SCDs and tetracyclines (TCs) made SCDs a fluorescence nanoprobe for TCs' determination with LODs of 0.26-0.48 μM. Applications of DCDs and SCDs for respective determination of Cu2+ and TCs in milk and pig liver samples were successfully demonstrated. Moreover, good photostability, low toxicity, and outstanding biocompatibility made DCDs and SCDs suitable for multicolor cellular imaging. Results indicate that natural products are excellent raw materials to controllably synthesize CDs with prominent physicochemical and fluorescence properties.Graphical abstract.
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Affiliation(s)
- Lihui Wu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, Hunan, China
| | - Ruiqing Long
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, Hunan, China
| | - Te Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, Hunan, China
| | - Cui Tang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China.,Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha, 410078, Hunan, China
| | - Xia Tong
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, Hunan, China
| | - Ying Guo
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China. .,Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha, 410078, Hunan, China.
| | - Shuyun Shi
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, Hunan, China.
| | - Haiyan Xiang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Chaoying Tong
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, Hunan, China
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12
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Divya VV, Suresh CH. Density functional theory study on the donating strength of donor systems in dye-sensitized solar cells. NEW J CHEM 2020. [DOI: 10.1039/d0nj00723d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Donating strength of typically used donors in dye-sensitized solar cells.
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Affiliation(s)
- Velayudhan V. Divya
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
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