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Kim T, Xu M, Lee YJ, Ku KH, Shin DJ, Lee DC, Jang SG, Yun H, Kim BJ. Fluorescence Switchable Block Copolymer Particles with Doubly Alternate-Layered Nanoparticle Arrays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101222. [PMID: 34114319 DOI: 10.1002/smll.202101222] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/28/2021] [Indexed: 06/12/2023]
Abstract
The precise self-assembly of block copolymers (BCPs) and inorganic nanoparticles (NPs) under 3D confinement offers microparticles with programmable nanostructures and functionalities. Here, fluorescence-switchable hybrid microspheres are developed by forming doubly alternating arrays of Au NPs and CdSe/ZnS quantum dots (QDs) within polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) BCP domains. These doubly alternating arrays afford controlled nonradiative energy transfer (NRET) between the QDs and Au NPs that is dependent on the layer-to-layer distance. Solvent-selective swelling of the hybrid particles tunes the distance between layers, modulating their NRET behavior and affording switchable fluorescence. The particle fluorescence is "OFF" in water through strong NRET from the QDs to Au NPs, but is "ON" in alcohols due to the increased distance between the Au NP and QD arrays in the swollen P4VP domains. The experimentally observed NRET intensity as a function of interparticle distance shows larger quenching efficiencies than those theoretically predicted due to the enhanced quenching within a 3D-confined system. Finally, the robust and reversible fluorescence switching of the hybrid particles in different solvents is demonstrated, highlighting their potentials for bioimaging, sensing, and diagnostic applications.
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Affiliation(s)
- Taewan Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Meng Xu
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Young Jun Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Kang Hee Ku
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Do Joong Shin
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Doh C Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Se Gyu Jang
- Functional Composite Materials Research Center, Korea Institute of Science and Technology (KIST), Jeonbuk, 55324, Republic of Korea
| | - Hongseok Yun
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Bumjoon J Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
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Chen CY, Ni CC, Wu RN, Kuo SY, Li CH, Kiang YW, Yang CC. Surface plasmon coupling effects on the förster resonance energy transfer from quantum dot into rhodamine 6G. NANOTECHNOLOGY 2021; 32:295202. [PMID: 33848997 DOI: 10.1088/1361-6528/abf775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/13/2021] [Indexed: 06/12/2023]
Abstract
Rhodamine 6G (R6G) molecules linked CdZnSeS/ZnS green-emitting quantum dots (QDs) are self-assembled onto Ag nanoparticles (NPs) for studying the surface plasmon (SP) coupling effect on the Förster resonance energy transfer (FRET) process from QD into R6G. SP coupling can enhance the emission efficiency of QD such that FRET has to compete with QD emission for transferring energy into R6G. It is found that FRET efficiency is reduced under the SP coupling condition. Although R6G emission efficiency can also be enhanced through SP coupling when it is directly linked onto Ag NP, the enhancement decreases when R6G is linked onto QD and then the QD-R6G complex is self-assembled onto Ag NP. In particular, R6G emission efficiency can be reduced through SP coupling when the number of R6G molecules linked onto a QD is high. A rate-equation model is built for resembling the measured photoluminescence decay profiles and providing us with more detailed explanations for the observed FRET and SP coupling behaviors.
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Affiliation(s)
- Chien-Yu Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Chun Ni
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ruei-Nan Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Sheng-Yang Kuo
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Hao Li
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yean-Woei Kiang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
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3
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Du X, Wang W, Wu C, Jia B, Li W, Qiu L, Jiang P, Wang J, Li YQ. Enzyme-responsive turn-on nanoprobes for in situ fluorescence imaging and localized photothermal treatment of multidrug-resistant bacterial infections. J Mater Chem B 2021; 8:7403-7412. [PMID: 32658955 DOI: 10.1039/d0tb00750a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Sensitive diagnosis and elimination of multidrug-resistant bacterial infections at an early stage remain paramount challenges. Herein, we present a gelatinase-responsive turn-on nanoprobe for in situ near-infrared (NIR) fluorescence imaging and localized photothermal treatment (PTT) of in vivo methicillin-resistant Staphylococcus aureus (MRSA) infections. The designed nanoprobe (named AuNS-Apt-Cy) is based on gold nanostars functionalized with MRSA-identifiable aptamer and gelatinase-responsive heptapeptide linker (CPLGVRG)-cypate complexes. The AuNS-Apt-Cy nanoprobe is non-fluorescent in aqueous environments due to the fluorescence resonance energy transfer between the gold nanostar core and cypate dye. We demonstrate that the AuNS-Apt-Cy nanoprobe can achieve MRSA targeting and accumulation as well as gelatinase (overexpressed in MRSA environments)-responsive turn-on NIR fluorescence due to the cleavage of the CPLGVRG linker and localized in vitro PTT via a mechanism involving bacterial cell wall and membrane disruption. In vivo experiments show that the AuNS-Apt-Cy nanoprobe can enable rapid (1 h post-administration) and in situ turn-on NIR fluorescence imaging with high sensitivity (105 colony-forming units) in diabetic wound and implanted bone plate mouse models. Remarkably, the AuNS-Apt-Cy nanoprobe can afford efficient localized PTT of diabetic wound and implanted bone plate-associated MRSA infections under the guidance of turn-on NIR fluorescence imaging, showing robust capability for early diagnosis and treatment of in vivo MRSA infections. In addition, the nanoprobe exhibits negligible damage to surrounding healthy tissues during PTT due to its targeted accumulation in the MRSA-infected site, guaranteeing its excellent in vivo biocompatibility and solving the main bottlenecks that hinder the clinical application of PTT-based antibacterial strategies.
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Affiliation(s)
- Xuancheng Du
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, China.
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4
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Chen YP, Ni CC, Wu RN, Kuo SY, Su YC, Huang YY, Chen JW, Hsu YC, Wu SH, Chen CY, Wu PH, Kiang YW, Yang CC. Combined effects of surface plasmon coupling and Förster resonance energy transfer on the light color conversion behaviors of colloidal quantum dots on an InGaN/GaN quantum-well nanodisk structure. NANOTECHNOLOGY 2021; 32:135206. [PMID: 33271517 DOI: 10.1088/1361-6528/abd05e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
By forming nanodisk (ND) structures on a blue-emitting InGaN/GaN quantum-well (QW) template, the QWs become close to the red-emitting quantum dots (QDs) and Ag nanoparticles (NPs) attached onto the sidewalls of the NDs such that Förster resonance energy transfer (FRET) and surface plasmon (SP) coupling can occur to enhance the efficiency of blue-to-red color conversion. With a larger ND height, more QWs are exposed to open air on the sidewall for more QD/Ag NP attachment through QD self-assembly and Ag NP drop casting such that the FRET and SP coupling effects, and hence the color conversion efficiency can be enhanced. A stronger FRET process leads to a longer QD photoluminescence (PL) decay time and a shorter QW PL decay time. It is shown that SP coupling can enhance the FRET efficiency.
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Affiliation(s)
- Yen-Po Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Chun Ni
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ruei-Nan Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Sheng-Yang Kuo
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yu-Cheng Su
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yang-Yi Huang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Jia-Wei Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yi-Chiao Hsu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Shung-Hsiang Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chien-Yu Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ping-Hsiu Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yean-Woei Kiang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
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5
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Zhao Y, Shi L, Miao H, Jing X. “Add on” Dual-Modal Optical Immunoassay by Plasmonic Metal NP-Semiconductor Composites. Anal Chem 2021; 93:3250-3257. [DOI: 10.1021/acs.analchem.0c04856] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yuan Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Lixia Shi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongyan Miao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaohui Jing
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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6
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Ni CC, Kuo SY, Li ZH, Wu SH, Wu RN, Chen CY, Yang CC. Förster resonance energy transfer in surface plasmon coupled color conversion processes of colloidal quantum dots. OPTICS EXPRESS 2021; 29:4067-4081. [PMID: 33770994 DOI: 10.1364/oe.415679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Förster resonance energy transfer (FRET) from a green-emitting quantum dot (GQD) into a red-emitting quantum dot (RQD) is an important mechanism in a multiple-color conversion process, particularly under the surface plasmon (SP) coupling condition for enhancing color conversion efficiency. Here, the dependencies of FRET efficiency on the relative concentrations of GQD and RQD in their mixtures and their surface molecule coatings for controlling surface charges are studied. Also, the SP coupling effects induced by two kinds of Ag nanoparticles on the emission behaviors of GQD and RQD are demonstrated, particularly when FRET is involved in the coupling process. FRET efficiency is reduced under the SP coupling condition. SP coupling can enhance the color conversion efficiency of either GQD or RQD. The combination of SP coupling and FRET can be used for controlling the relative converted light intensities in a multiple-color conversion process.
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7
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Wu M, Wu W, Duan Y, Liu X, Wang M, Phan CU, Qi G, Tang G, Liu B. HClO-Activated Fluorescence and Photosensitization from an AIE Nanoprobe for Image-Guided Bacterial Ablation in Phagocytes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2005222. [PMID: 33079417 DOI: 10.1002/adma.202005222] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/06/2020] [Indexed: 06/11/2023]
Abstract
Bacteria hiding in host phagocytes are difficult to kill, which can cause phagocyte disorders resulting in local and systemic tissue damage. Effective accumulation of activatable photosensitizers (PSs) in phagocytes to realize selective imaging and on-demand photodynamic ablation of bacteria is of great scientific and practical interests for precise bacteria diagnosis and treatment. Herein, HClO-activatable theranostic nanoprobes, DTF-FFP NPs, for image-guided bacterial ablation in phagocytes are introduced. DTF-FFP NPs are prepared by nanoprecipitation of an HClO-responsive near-infrared molecule FFP and an efficient PS DTF with aggregation-induced emission characteristic using an amphiphilic polymer Pluronic F127 as the encapsulation matrix. As an energy acceptor, FFP can quench both fluorescence and production of reactive oxygen species (ROS) of DTF, thus eliminating the phototoxicity of DTF-FFP NPs in normal cells and tissues. Once delivered to the infection sites, DTF-FFP NPs light up with red fluorescence and efficiently generate ROS owing to the degradation of FFP by the stimulated release of HClO in phagocytes. The selective activation of fluorescence and photosensitization is successfully confirmed by both in vitro and in vivo results, demonstrating the effectiveness and theranostic potential of DTF-FFP NPs in precise bacterial therapy.
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Affiliation(s)
- Min Wu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Wenbo Wu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Yukun Duan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Xingang Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Meng Wang
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
| | - Chi Uyen Phan
- Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Guobin Qi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Guping Tang
- Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, P. R. China
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8
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Effect of Random Nanostructured Metallic Environments on Spontaneous Emission of HITC Dye. NANOMATERIALS 2020; 10:nano10112135. [PMID: 33120972 PMCID: PMC7694070 DOI: 10.3390/nano10112135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/11/2020] [Accepted: 10/16/2020] [Indexed: 11/18/2022]
Abstract
We have studied emission kinetics of HITC laser dye on top of glass, smooth Au films, and randomly structured porous Au nanofoams. The observed concentration quenching of luminescence of highly concentrated dye on top of glass (energy transfer to acceptors) and the inhibition of the concentration quenching in vicinity of smooth Au films were in accord with our recent findings. Intriguingly, the emission kinetics recorded in different local spots of the Au nanofoam samples had a spread of the decay rates, which was large at low dye concentrations and became narrower with increase of the dye concentration. We infer that in different subvolumes of Au nanofoams, HITC molecules are coupled to the nanofoams weaker or stronger. The inhibition of the concentration quenching in Au nanofoams was stronger than on top of smooth Au films. This was true for all weakly and strongly coupled subvolumes contributing to the spread of the emission kinetics. The experimental observations were explained using theoretical model accounting for change in the Förster radius caused by the strong energy transfer to metal.
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9
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Hou S, Chen Y, Lu D, Xiong Q, Lim Y, Duan H. A Self-Assembled Plasmonic Substrate for Enhanced Fluorescence Resonance Energy Transfer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906475. [PMID: 31943423 DOI: 10.1002/adma.201906475] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/09/2019] [Indexed: 06/10/2023]
Abstract
Fluorescence resonance energy transfer (FRET) has found widespread uses in biosensing, molecular imaging, and light harvesting. Plasmonic metal nanostructures offer the possibility of engineering photonic environment of specific fluorophores to enhance the FRET efficiency. However, the potential of plasmonic nanostructures to enable tailored FRET enhancement on planar substrates remains largely unrealized, which are of considerable interest for high-performance on-surface bioassays and photovoltaics. The main challenge lies in the necessitated concurrent control over the spectral properties of plasmonic substrates to match that of fluorophores and the fluorophore-substrate spacing. Here, a self-assembled plasmonic substrate based on polydopamine (PDA)-coated plasmonic nanocrystals is developed to effectively address this challenge. The PDA coating not only drives interfacial self-assembly of the nanocrystals to form closely packed arrays with customized optical properties, but also can serve as a tailored nanoscale spacer between the fluorophores and plasmonic nanocrystals, which collectively lead to optimized fluorescence enhancement. The biocompatible plasmonic substrate that allows convenient bioconjugation imparted by PDA has afforded improved FRET efficiency in DNA microarray assay and FRET imaging of live cells. It is envisioned that the self-assembled plasmonic substrates can be readily integrated into fluorescence-based platforms for diverse biomedical and photoconversion applications.
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Affiliation(s)
- Shuai Hou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yonghao Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Derong Lu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Qirong Xiong
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yun Lim
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Hongwei Duan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
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Zheng Y, Tang Y, Yu J, Xie L, Dong H, Deng R, Jia F, Liu B, Gao L, Duan J. Dual and Multi-Emission Hybrid Micelles Realized through Coordination-Driven Self-Assembly. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E440. [PMID: 31963389 PMCID: PMC7014128 DOI: 10.3390/ma13020440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 11/17/2022]
Abstract
Building novel functional nanomaterials with a polymer is one of the most dynamic research fields at present. Here, three amphiphilic block copolymers of 8-hydroxyquinoline derivative motifs (MQ) with excellent coordination function were synthesized by Reversible Addition-Fragmentation Chain Transfer Polymerization (RAFT) polymerization. The coordination micelles were prepared through the self-assembly process, which the MQ motifs were dispersed in the hydrophobic polystyrene (PSt) blocks and hydrophilic Poly(N-isopropylacrylamide (PNIPAM)) blocks, respectively. The dual-emission micelles including the intrinsic red light emission of quantum dots (QDs) and the coordination green light emission of Zn2+-MQ complexes were built by introducing the CdSe/ZnS and CdTe/ZnS QDs in the core and shell precisely in the coordination micelles through the coordination-driven self-assembly process. Furthermore, based on the principle of three primary colors that produce white light emission, vinyl carbazole units (Polyvinyl Carbazole, PVK) with blue light emission were introduced into the hydrophilic PNIPAM blocks to construct the white light micelles that possess special multi-emission properties in which the intrinsic red light emission of QDs, the coordination green light of Zn2+-MQ complexes, and the blue light emission of PVK were synergized. The dual and multi-emission hybrid micelles have great application prospects in ratiometric fluorescent probes and biomarkers.
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Affiliation(s)
- Youxiong Zheng
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Yan Tang
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Jianwei Yu
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Lan Xie
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Huiyou Dong
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Rongsheng Deng
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Fuhua Jia
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Bingxin Liu
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Li Gao
- Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; (Y.Z.); (Y.T.); (J.Y.); (L.X.); (H.D.); (R.D.); (F.J.)
| | - Junyuan Duan
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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11
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Kim KS, Kim JH, Yoo SI, Sohn BH. Fluorescence Resonance Energy Transfer within Diblock Copolymer Micelles in the Proximity of Metal Nanoparticles. Macromol Res 2019. [DOI: 10.1007/s13233-019-7127-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Cortes CL, Jacob Z. Fundamental figures of merit for engineering Förster resonance energy transfer. OPTICS EXPRESS 2018; 26:19371-19387. [PMID: 30114111 DOI: 10.1364/oe.26.019371] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/01/2018] [Indexed: 06/08/2023]
Abstract
Over the past 15 years there has been an ongoing debate regarding the influence of the photonic environment on Förster resonance energy transfer (FRET). Disparate results corresponding to enhancement, suppression and null effect of the photonic environment have led to a lack of consensus between the traditional theory of FRET and experiments. Here we show that the quantum electrodynamic theory (QED) of FRET near an engineered nanophotonic environment is exactly equivalent to an effective near-field model describing electrostatic dipole-dipole interactions. This leads to an intuitive and rigorously exact description of FRET, previously unavailable, bridging the gap between experimental observations and theoretical interpretations. Furthermore, we show that the widely used concept of Purcell factor variation is only important for understanding spontaneous emission and is an incorrect figure of merit (FOM) for analyzing FRET. To this end, we analyze the figures of merit which characterize FRET in a photonic environment 1) the FRET rate enhancement factor (FET), 2) FRET efficiency enhancement factor (Feff) and 3) Two-point spectral density (SEE) which is the photonic property of the environment governing FRET analogous to the local density of states that controls spontaneous emission. Counterintuitive to existing knowledge, we show that suppression of the Purcell factor is in fact necessary for enhancing the efficiency of the FRET process. We place fundamental bounds on the FRET figures of merit arising from material absorption in the photonic environment as well as key properties of emitters including intrinsic quantum efficiencies and orientational dependence. Finally, we use our approach to conclusively explain multiple recent experiments and predict regimes where the FRET rate is expected to be enhanced, suppressed or remain the same. Our work paves for a complete theory of FRET with predictive power for designing the ideal photonic environment to control FRET.
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Kim KS, Yoo SI, Sohn BH. Metal-Coupled Fluorescence Resonance Energy Transfer in Layer-by-Layer Assemblies for Dual Modality Fluorescence Enhancement. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ki-Se Kim
- Department of Chemistry; Seoul National University; Seoul 08826 Republic of Korea
| | - Seong Il Yoo
- Department of Polymer Engineering; Pukyong National University; Busan 48547 Republic of Korea
| | - Byeong-Hyeok Sohn
- Department of Chemistry; Seoul National University; Seoul 08826 Republic of Korea
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14
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Concomitant Organization of Fluorescent Dyes and Au Nanoparticles in Spin-Coated Films of Diblock Copolymer Micelles. Macromol Res 2018. [DOI: 10.1007/s13233-018-6017-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Wu X, Hao C, Kumar J, Kuang H, Kotov NA, Liz-Marzán LM, Xu C. Environmentally responsive plasmonic nanoassemblies for biosensing. Chem Soc Rev 2018; 47:4677-4696. [DOI: 10.1039/c7cs00894e] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Assemblies of plasmonic nanoparticles enable new modalities for biosensing.
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Affiliation(s)
- Xiaoling Wu
- State Key Lab of Food Science and Technology
- Jiangnan University
- Wuxi
- People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection
| | - Changlong Hao
- State Key Lab of Food Science and Technology
- Jiangnan University
- Wuxi
- People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection
| | - Jatish Kumar
- CIC biomaGUNE and CIBER-BBN
- 20014 Donostia-San Sebastian
- Spain
| | - Hua Kuang
- State Key Lab of Food Science and Technology
- Jiangnan University
- Wuxi
- People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection
| | - Nicholas A. Kotov
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Biointerfaces Institute, University of Michigan
| | - Luis M. Liz-Marzán
- CIC biomaGUNE and CIBER-BBN
- 20014 Donostia-San Sebastian
- Spain
- Ikerbasque
- Basque Foundation for Science
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology
- Jiangnan University
- Wuxi
- People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection
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16
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Lou XY, Song N, Yang YW. Fluorescence Resonance Energy Transfer Systems in Supramolecular Macrocyclic Chemistry. Molecules 2017; 22:molecules22101640. [PMID: 28961213 PMCID: PMC6151841 DOI: 10.3390/molecules22101640] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 11/16/2022] Open
Abstract
The fabrication of smart materials is gradually becoming a research focus in nanotechnology and materials science. An important criterion of smart materials is the capacity of stimuli-responsiveness, while another lies in selective recognition. Accordingly, supramolecular host-guest chemistry has proven a promising support for building intelligent, responsive systems; hence, synthetic macrocyclic hosts, such as calixarenes, cucurbiturils, cyclodextrins, and pillararenes, have been used as ideal building blocks. Meanwhile, manipulating and harnessing light artificially is always an intensive attempt for scientists in order to meet the urgent demands of technological developments. Fluorescence resonance energy transfer (FRET), known as a well-studied luminescent activity and also a powerful tool in spectroscopic area, has been investigated from various facets, of which the application range has been broadly expanded. In this review, the innovative collaboration between FRET and supramolecular macrocyclic chemistry will be presented and depicted with typical examples. Facilitated by the dynamic features of supramolecular macrocyclic motifs, a large variety of FRET systems have been designed and organized, resulting in promising optical materials with potential for applications in protein assembly, enzyme assays, diagnosis, drug delivery monitoring, sensing, photosynthesis mimicking and chemical encryption.
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Affiliation(s)
- Xin-Yue Lou
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
| | - Nan Song
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
| | - Ying-Wei Yang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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17
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Xiao W, Suby N, Xiao K, Lin TY, Al Awwad N, Lam KS, Li Y. Extremely long tumor retention, multi-responsive boronate crosslinked micelles with superior therapeutic efficacy for ovarian cancer. J Control Release 2017; 264:169-179. [PMID: 28847739 DOI: 10.1016/j.jconrel.2017.08.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/25/2017] [Accepted: 08/22/2017] [Indexed: 02/05/2023]
Abstract
Mortality rates for ovarian cancer have declined only slightly in the past forty years since the "War on Cancer" was declared. The current standard care of ovarian cancer is still cytoredutive surgery followed by several cycles of chemotherapy. The severe adverse effect from chemotherapy drug is a leading cause for the patients to fail in long term therapy post-surgery. New nanocarriers able to minimize the premature drug release in blood circulation while releasing drug on-demand at tumor site have profound impact on the improvement of the efficacy and toxicity profile of the chemotherapeutic drugs. Here we reported a unique type of extremely long tumor retention, multi-responsive boronate crosslinked micelles (BCM) for ovarian cancer therapy. We systemically investigated the stability of BCM in serum and plasma, and their responsiveness to acidic pH and cis-diols (such as mannitol, a safe FDA approved drug for diuresis) through particle size measurement and förster resonance energy transfer (FRET) approach. Paclitaxel (PTX) loaded BCM (BCM-PTX) exhibited higher stability than non-crosslinked micelles (NCM) in the presence of plasma or serum. BCMs possessed a longer in vivo blood circulation time when compared to NCM. Furthermore, BCM could be disassembled in an acidic pH environment or by administrating mannitol, facilitating drug release in an acidic tumor environment and triggered by exogenous stimuli after drug enrichment in tumor mass. Near infra-red fluorescence (NIRF) imaging on SKOV-3 ovarian cancer mouse model demonstrated that the NIR dye DiD encapsulated BCM could preferentially accumulate in tumor site and their tumor retention was very long with still 66% remained on 12th day post injection. DiD-NCM had similar high-level uptake in tumor with DiD-BCM within the first 3days, its accumulation, however, decreased obviously on 4th day and only 15% dye was left 12days later. In both formulations, the dye uptake in normal organs was mostly washed away within the first 24-48h. In in vivo tumor treatment study, PTX loaded BCM showed superior therapeutic efficacy than that of NCM and Taxol. The mice could tolerate 20mg/kg PTX formulated in nano-formulations, which doubled the maximum tolerated dose (MTD) of Taxol. The administration of mannitol 24h after BCM-PTX injection further improved the tumor therapeutic effect and elongated the survival time of the mice. The novel boronate-catechol crosslinked nanocarrier platform demonstrated its superior capability in targeted drug delivery, which is not only useful for ovarian cancer treatment but will also be beneficial for the therapy of many other solid tumors.
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Affiliation(s)
- Wenwu Xiao
- Department of Biochemistry and Molecular Medicine, UC Davis Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817, USA
| | - Nell Suby
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, UC Davis Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817, USA
| | - Kai Xiao
- National Chengdu Center for Safety Evaluation of Drugs, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Tzu-Yin Lin
- Department of Internal Medicine, Division of Hematology/Oncology, University of California Davis, Sacramento, CA 95817, USA
| | - Nasir Al Awwad
- Pathology College of Clinical Pharmacy, Al-Baha University, Al-Baha City 11074, Saudi Arabia
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, UC Davis Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817, USA.
| | - Yuanpei Li
- Department of Biochemistry and Molecular Medicine, UC Davis Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817, USA.
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18
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Akhavan S, Akgul MZ, Hernandez-Martinez PL, Demir HV. Plasmon-Enhanced Energy Transfer in Photosensitive Nanocrystal Device. ACS NANO 2017; 11:5430-5439. [PMID: 28528543 DOI: 10.1021/acsnano.6b08392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Förster resonance energy transfer (FRET) interacted with localized surface plasmon (LSP) gives us the ability to overcome inadequate transfer of energy between donor and acceptor nanocrystals (NCs). In this paper, we show LSP-enhanced FRET in colloidal photosensors of NCs in operation, resulting in substantially enhanced photosensitivity. The proposed photosensitive device is a layered self-assembled colloidal platform consisting of separated monolayers of the donor and the acceptor colloidal NCs with an intermediate metal nanoparticle (MNP) layer made of gold interspaced by polyelectrolyte layers. Using LBL assembly, we fabricated and comparatively studied seven types of such NC-monolayer devices (containing only donor, only acceptor, Au MNP-donor, Au MNP-acceptor, donor-acceptor bilayer, donor-Au MNP-acceptor trilayer, and acceptor-Au MNP-donor reverse trilayer). In these structures, we revealed the effect of LSP-enhanced FRET and exciton interactions from the donor NCs layer to the acceptor NCs layer. Compared to a single acceptor NC device, we observed a significant extension in operating wavelength range and a substantial photosensitivity enhancement (2.91-fold) around the LSP resonance peak of Au MNPs in the LSP-enhanced FRET trilayer structure. Moreover, we present a theoretical model for the intercoupled donor-Au MNP-acceptor structure subject to the plasmon-mediated nonradiative energy transfer. The obtained numerical results are in excellent agreement with the systematic experimental studies done in our work. The potential to modify the energy transfer through mastering the exciton-plasmon interactions and its implication in devices make them attractive for applications in nanophotonic devices and sensors.
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Affiliation(s)
- Shahab Akhavan
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering and Department of Physics, Bilkent University , Ankara 06800, Turkey
| | - Mehmet Zafer Akgul
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering and Department of Physics, Bilkent University , Ankara 06800, Turkey
| | - Pedro Ludwig Hernandez-Martinez
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering and Department of Physics, Bilkent University , Ankara 06800, Turkey
- LUMINOUS! Center of Excellence, School of Electrical and Electronic Engineering and School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 639798, Singapore
| | - Hilmi Volkan Demir
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering and Department of Physics, Bilkent University , Ankara 06800, Turkey
- LUMINOUS! Center of Excellence, School of Electrical and Electronic Engineering and School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 639798, Singapore
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19
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Kim JH, Zakia M, Kim JH, Park SS, Yoon J, Huh P, Yoo SII. Clustered assembly of Au nanoparticles from spherical diblock copolymer micelles encapsulating Au nanoparticle. J Appl Polym Sci 2017. [DOI: 10.1002/app.44693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jang Hwan Kim
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Maulida Zakia
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Joo Hyun Kim
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Seong Soo Park
- Department of Industrial Chemistry; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
| | - Jinhwan Yoon
- Department of Chemistry; Dong-A University; Nakdong-Daero 550beon-gil, Saha-gu Busan 604-714 Korea
| | - PilHo Huh
- Department of Polymer Science and Engineering; Pusan National University; Busan 609-735 Korea
| | - Seong II Yoo
- Department of Polymer Engineering; Pukyong National University; 365 Sinseon-ro, Nam-gu Busan 608-739 Korea
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20
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Kim SS, Kang D, Sohn BH. Fabrication of size-controlled nanoring arrays by selective incorporation of ionic liquids in diblock copolymer micellar cores. NANOTECHNOLOGY 2017; 28:225303. [PMID: 28443831 DOI: 10.1088/1361-6528/aa6f81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report the synthesis of arrayed nanorings with tunable physical dimensions from thin films of polystyrene-block-poly(4-vinylpyridine) (PS-P4VP) micelles. For accurate control of the inner and outer diameters of the nanorings, we added imidazolium-based ionic liquids (ILs) into the micellar solution, which were eventually incorporated into the micellar cores. We observed the structural changes of the micellar cores coated on a substrate due to the presence of ILs. The spin-coated micellar cores were treated with an acidic precursor solution and generated toroid nanostructures, of which size depended on the amount of IL loaded into the micelles. We then treated the transformed micellar films with oxygen plasma to produce arrays of various metal and oxide nanorings on a substrate. The spacings and diameters of nanorings were governed by the molecular weight of the PS-P4VP and the amount of IL used. We also demonstrated that arrayed Pt nanorings enabled the fabrication of reduced graphene oxide anti-nanoring arrays via a catalytic tailoring process.
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21
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Jayabharathi J, Sarojpurani E, Thanikachalam V, Jeeva P. Far-Field Enhancement by Silver Nanoparticles in Organic Light Emitting Diodes Based on Donor−π–Acceptor Chromophore. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Palanivel Jeeva
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
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22
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Saha J, Roy AD, Dey D, Bhattacharjee D, Paul PK, Das R, Hussain SA. Effect of Zinc oxide nanoparticle on Fluorescence Resonance Energy transfer between Fluorescein and Rhodamine 6G. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 175:110-116. [PMID: 28024244 DOI: 10.1016/j.saa.2016.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 11/17/2016] [Accepted: 12/05/2016] [Indexed: 05/26/2023]
Abstract
Fluorescence Resonance Energy Transfer between two dyes Fluorescein and Rhodamine 6G were investigated in solution in the presence and absence of Zinc oxide nanoparticle. Zinc oxide nanostructure is used as the fluorescence enhancing agent for the present study since donor (Fluorescein) fluorescence increase significantly in presence of nanoparticle. Accordingly, the energy transfer efficiency in the presence of nanoparticle increases. The maximum efficiency was 69% for acceptor (Rhodamine 6G) concentration of 0.75×10-5M. The energy transfer efficiency was found to be pH sensitive and it varies from 4.15% to 90.00% in mixed dye solution for a change in pH from 1.5 to 10.0. With proper calibration it is possible to use the present system under investigation to sense pH which is better with respect to our previous reported results [Spectrochim. Acta Part A. 149 (2015) 143-149] as it can sense a wide range of pH and with better sensitivity.
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Affiliation(s)
- Jaba Saha
- Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Arpan Datta Roy
- Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Dibyendu Dey
- Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - D Bhattacharjee
- Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Pabitra Kumar Paul
- Department of Physics, Jadavpur University, Jadavpur, Kolkata 700032, West Bengal, India
| | - R Das
- Nano-Physics and Nanotechnology Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Syed Arshad Hussain
- Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India.
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23
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Zhang Q, Tian X, Zhou H, Wu J, Tian Y. Lighting the Way to See Inside Two-Photon Absorption Materials: Structure-Property Relationship and Biological Imaging. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E223. [PMID: 28772584 PMCID: PMC5503390 DOI: 10.3390/ma10030223] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/16/2017] [Indexed: 12/11/2022]
Abstract
The application of two-photon absorption (2PA) materials is a classical research field and has recently attracted increasing interest. It has generated a demand for new dyes with high 2PA cross-sections. In this short review, we briefly cover the structure-2PA property relationships of organic fluorophores, organic-inorganic nanohybrids and metal complexes explored by our group. (1) The two-photon absorption cross-section (δ) of organic fluorophores increases with the extent of charge transfer, which is important to optimize the core, donor-acceptor pair, and conjugation-bridge to obtain a large δ value. Among the various cores, triphenylamine appears to be an efficient core. Lengthening of the conjugation with styryl groups in the D-π-D quadrupoles and D-π-A dipoles increased δ over a long wavelength range than when vinylene groups were used. Large values of δ were observed for extended conjugation length and moderate donor-acceptors in the near-IR wavelengths. The δ value of the three-arm octupole is larger than that of the individual arm, if the core has electron accepting groups that allow significant electronic coupling between the arms; (2) Optical functional organic/inorganic hybrid materials usually show high thermal stability and excellent optical activity; therefore the design of functional organic molecules to build functional organic-inorganic hybrids and optimize the 2PA properties are significant. Advances have been made in the design of organic-inorganic nanohybrid materials of different sizes and shapes for 2PA property, which provide useful examples to illustrate the new features of the 2PA response in comparison to the more thoroughly investigated donor-acceptor based organic compounds and inorganic components; (3) Metal complexes are of particular interest for the design of new materials with large 2PA ability. They offer a wide range of metals with different ligands, which can give rise to tunable electronic and 2PA properties. The metal ions, including transition metals and lanthanides, can serve as an important part of the structure to control the intramolecular charge-transfer process that drives the 2PA process. As templates, transition metal ions can assemble simple to more sophisticated ligands in a variety of multipolar arrangements resulting in interesting and tailorable electronic and optical properties, depending on the nature of the metal center and the energetics of the metal-ligand interactions, such as intraligand charge-transfer (ILCT) and metal-ligand charge-transfer (MLCT) processes. Lanthanide complexes are attractive for a number of reasons: (i) their visible emissions are quite long-lived; (ii) their absorption and emission can be tuned with the aid of appropriate photoactive ligands; (iii) the accessible energy-transfer path between the photo-active ligands and the lanthanide ion can facilitate efficient lanthanide-based 2PA properties. Thus, the above materials with excellent 2PA properties should be applied in two-photon applications, especially two-photon fluorescence microscopy (TPFM) and related emission-based applications. Furthermore, the progress of research into the use of those new 2PA materials with moderate 2PA cross section in the near-infrared region, good Materials 2017, 10, 223 2 of 37 biocompatibility, and enhanced two-photon excited fluorescence for two-photon bio-imaging is summarized. In addition, several possible future directions in this field are also discussed (146 references).
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Affiliation(s)
- Qiong Zhang
- Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Department of Chemistry, Anhui University, Hefei 230039, China.
| | - Xiaohe Tian
- School of Life Science, Anhui University, Hefei 230039, China.
| | - Hongping Zhou
- Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Department of Chemistry, Anhui University, Hefei 230039, China.
| | - Jieying Wu
- Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Department of Chemistry, Anhui University, Hefei 230039, China.
| | - Yupeng Tian
- Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Department of Chemistry, Anhui University, Hefei 230039, China.
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Aissaoui N, Moth-Poulsen K, Käll M, Johansson P, Wilhelmsson LM, Albinsson B. FRET enhancement close to gold nanoparticles positioned in DNA origami constructs. NANOSCALE 2017; 9:673-683. [PMID: 27942672 DOI: 10.1039/c6nr04852h] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Here we investigate the energy transfer rates of a Förster resonance energy transfer (FRET) pair positioned in close proximity to a 5 nm gold nanoparticle (AuNP) on a DNA origami construct. We study the distance dependence of the FRET rate by varying the location of the donor molecule, D, relative to the AuNP while maintaining a fixed location of the acceptor molecule, A. The presence of the AuNP induces an alteration in the spontaneous emission of the donor (including radiative and non-radiative rates) which is strongly dependent on the distance between the donor and AuNP surface. Simultaneously, the energy transfer rates are enhanced at shorter D-A (and D-AuNP) distances. Overall, in addition to the direct influence of the acceptor and AuNP on the donor decay there is also a significant increase in decay rate not explained by the sum of the two interactions. This leads to enhanced energy transfer between donor and acceptor in the presence of a 5 nm AuNP. We also demonstrate that the transfer rate in the three "particle" geometry (D + A + AuNP) depends approximately linearly on the transfer rate in the donor-AuNP system, suggesting the possibility to control FRET process with electric field induced by 5 nm AuNPs close to the donor fluorophore. It is concluded that DNA origami is a very versatile platform for studying interactions between molecules and plasmonic nanoparticles in general and FRET enhancement in particular.
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Affiliation(s)
- Nesrine Aissaoui
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden.
| | - Kasper Moth-Poulsen
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden.
| | - Mikael Käll
- Department of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden
| | - Peter Johansson
- School of Science and Technology, Örebro University, Örebro, Sweden
| | - L Marcus Wilhelmsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden.
| | - Bo Albinsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden.
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Rao J, Zhang H, Gaan S, Salentinig S. Self-Assembly of Polystyrene-b-poly(2-vinylpyridine) Micelles: From Solutions to Silica Particles Surfaces. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingyi Rao
- Department Materials meet
Life, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Haijiang Zhang
- Department Materials meet
Life, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Sabyasachi Gaan
- Department Materials meet
Life, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Stefan Salentinig
- Department Materials meet
Life, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
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26
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Chen X, Yu S, Yang L, Wang J, Jiang C. Fluorescence and visual detection of fluoride ions using a photoluminescent graphene oxide paper sensor. NANOSCALE 2016; 8:13669-77. [PMID: 27376510 DOI: 10.1039/c6nr02878k] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The instant and on-site detection of trace aqueous fluoride ions is still a challenge for environmental monitoring and protection. This work demonstrates a new analytical method and its utility of a paper sensor for visual detection of F(-) on the basis of the fluorescence resonance energy transfer (FRET) between photoluminescent graphene oxide (GO) and silver nanoparticles (AgNPs) through the formation of cyclic esters between phenylborinic acid and diol. The fluorescence of GO was quenched by the AgNPs, and trace F(-) can recover the fluorescence of the quenched photoluminescent GO. The increase in fluorescence intensity is proportional to the concentration of F(-) in the range of 0.05-0.55 nM, along with a limit of detection (LOD) as low as 9.07 pM. Following the sensing mechanism, a paper-based sensor for the visual detection of aqueous F(-) has been successfully developed. The paper sensor showed high sensitivity for aqueous F(-), and the LOD could reach as low as 0.1 μM as observed by the naked eye. The very simple and effective strategy reported here could be extended to the visual detection of a wide range of analytes in the environment by the construction of highly efficient FRET nanoprobes.
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Affiliation(s)
- Xiaochun Chen
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei, Anhui 230009, China.
| | - Shaoming Yu
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei, Anhui 230009, China.
| | - Liang Yang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
| | - Jianping Wang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
| | - Changlong Jiang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China. and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China and State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China
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27
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Kim SH, Kim KS, Char K, Yoo SI, Sohn BH. Short-range ordered photonic structures of lamellae-forming diblock copolymers for excitation-regulated fluorescence enhancement. NANOSCALE 2016; 8:10823-10831. [PMID: 27168228 DOI: 10.1039/c6nr00345a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Photonic crystals can be represented by periodic nanostructures with alternating refractive indices, which create artificial stop bands with the appearance of colors. In this regard, nanodomains of block copolymers and the corresponding structural colors have been intensively studied in the past. However, the practical application of photonic crystals of block copolymers has been limited to a large degree because of the presence of large defects and grain boundaries in the nanodomains of block copolymers. The present study focuses on the alternative opportunity of short-range ordered nanodomains of block copolymers for fluorescence enhancement, which also has a direct relevance to the development of fluorescence sensors or detectors. The enhancement mechanism was found to be interconnected with the excitation process rather than the alternation of the decay kinetics. In particular, we demonstrate that randomly oriented, but regular grains of lamellae of polystyrene-block-polyisoprene, PS-b-PI, diblock copolymers and their blend with PS homopolymers can behave as Bragg mirrors to induce multiple reflections of the excitation source inside the photonic structures. This process in turn significantly increases the effective absorption of the given fluorophores inside the polymeric photonic structures to amplify the fluorescence signal.
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Affiliation(s)
- Se Hee Kim
- Interdisciplinary Program in Nano Science and Technology, Seoul National University, Seoul, 151-747, Korea
| | - Ki-Se Kim
- Department of Chemistry, Seoul National University, Seoul, 151-747, Korea.
| | - Kookheon Char
- School of Chemical and Biological Engineering, The National Creative Research Initiative Center for Intelligent Hybrids, Seoul National University, Seoul, 151-747, Korea.
| | - Seong Il Yoo
- Department of Polymer Engineering, Pukyong National University, Busan 608-739, Korea.
| | - Byeong-Hyeok Sohn
- Department of Chemistry, Seoul National University, Seoul, 151-747, Korea.
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Wang S, Ryan JW, Singh A, Beirne JG, Palomares E, Redmond G. Encapsulation of MEH-PPV:PCBM Hybrids in the Cores of Block Copolymer Micellar Assemblies: Photoinduced Electron Transfer in a Nanoscale Donor-Acceptor System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:329-337. [PMID: 26653672 DOI: 10.1021/acs.langmuir.5b04053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The objective of this work is to demonstrate that conjugated polymer:fullerene hybrid nanoparticles encapsulated in the hydrophobic cores of triblock copolymer micelles may successfully act as spatially confined donor-acceptor systems capable of facilitating photoinduced charge carrier separation. To this end, aqueous dispersions of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) nanoparticles were first prepared by solubilization of the polymer in the cores of poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) triblock copolymer, Pluronic F-127 micelles. A number of significant optical spectroscopic changes were observed on transfer of the conjugated polymer from a nonaqueous solvent to the aqueous micellar environment. These were primarily attributed to increased interchain interactions due to conjugated polymer chain collapse during encapsulation in the micellar cores. When prepared in buffer solution, the micelles exhibited good long-term collodial stability. When MEH-PPV micelles were blended by the addition of controlled amounts of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), the observed correspondence of photoluminescence emission quenching, quantum yield decreases, and emission lifetime shortening with increasing PCBM concentration indicated efficient photoinduced donor-to-acceptor charge transfer between MEH-PPV and the fullerenes in the cores of the micelles, an assignment that was confirmed by transient absorption spectroscopic monitoring of carrier photogeneration and recombination.
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Affiliation(s)
- Suxiao Wang
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - James William Ryan
- Institute of Chemical Research of Catalonia (ICIQ), Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Amita Singh
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - Jason Gerard Beirne
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ), Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Gareth Redmond
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
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29
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Prajapati R, Bhattacharya A, Mukherjee TK. Resonant excitation energy transfer from carbon dots to different sized silver nanoparticles. Phys Chem Chem Phys 2016; 18:28911-28918. [DOI: 10.1039/c6cp05451j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In the present study we have demonstrated the size-dependent resonant nanometal surface energy transfer (NSET) from carbon dots (CDs) to silver nanoparticles (Ag NPs) using photoluminescence spectroscopy.
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Affiliation(s)
- Roopali Prajapati
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Simrol
- Indore-453552
- India
| | - Arpan Bhattacharya
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Simrol
- Indore-453552
- India
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30
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Tumkur TU, Kitur JK, Bonner CE, Poddubny AN, Narimanov EE, Noginov MA. Control of Förster energy transfer in the vicinity of metallic surfaces and hyperbolic metamaterials. Faraday Discuss 2015; 178:395-412. [PMID: 25803206 DOI: 10.1039/c4fd00184b] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optical cavities, plasmonic structures, photonic band crystals and interfaces, as well as, generally speaking, any photonic media with homogeneous or spatially inhomogeneous dielectric permittivity (including metamaterials) have local densities of photonic states, which are different from that in vacuum. These modified density of states environments are known to control both the rate and the angular distribution of spontaneous emission. In the present study, we question whether the proximity to metallic and metamaterial surfaces can affect other physical phenomena of fundamental and practical importance. We show that the same substrates and the same nonlocal dielectric environments that boost spontaneous emission, also inhibit Förster energy transfer between donor and acceptor molecules doped into a thin polymeric film. This finding correlates with the fact that in dielectric media, the rate of spontaneous emission is proportional to the index of refraction n, while the rate of the donor-acceptor energy transfer (in solid solutions with a random distribution of acceptors) is proportional to n(-1.5). This heuristic correspondence suggests that other classical and quantum phenomena, which in regular dielectric media depend on n, can also be controlled with custom-tailored metamaterials, plasmonic structures, and cavities.
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Affiliation(s)
- T U Tumkur
- Center for Materials Research, Norfolk State University, Norfolk, VA 23504, USA.
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31
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Hu Y, Yang Y, Wang H, Du H. Synergistic Integration of Layer-by-Layer Assembly of Photosensitizer and Gold Nanorings for Enhanced Photodynamic Therapy in the Near Infrared. ACS NANO 2015; 9:8744-8754. [PMID: 26267273 DOI: 10.1021/acsnano.5b03063] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A layer-by-layer (LbL) assembly strategy was used to incorporate high concentrations of Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) photosensitizer (PS) onto plasmonic Au nanorings (Au NRs) for increasing the cellular uptake of AlPcS4 and subsequently enhancing the efficacy of photodynamic therapy (PDT) of human breast cancer cells (MDA-MB-231) in the near-infrared (NIR) range. Au NRs with two layers of AlPcS4 (Au NR/(AlPcS4)2) markedly increased the cellular internalization of AlPcS4 and elevated the generation of reactive oxygen species (ROS). Quenching the photosensitivity of AlPcS4 on the Au NR surface during the uptake and then significant ROS formation only upon PS release inside the cellular compartment made it possible to achieve a high PDT specificity and efficacy. PDT of breast cancer cells following 4 h of incubation with various formula revealed the following cell destruction rate: ∼10% with free AlPcS4, ∼23% with singly layered Au NR/(AlPcS4)1 complex, and ∼50% with doubly layered Au NR/(AlPcS4)2. Incubation with Au NR/(AlPcS4)2 for an additional 2 h resulted in ∼85% cell killing, more than 8-fold increase compared to AlPcS4 alone. Together, integration of LbL of PS with Au NRs holds a significant promise for PDT therapeutic treatment of a variety of cancers.
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Affiliation(s)
- Yue Hu
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology , Hoboken, New Jersey 07030, United States
| | - Yamin Yang
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology , Hoboken, New Jersey 07030, United States
| | - Hongjun Wang
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology , Hoboken, New Jersey 07030, United States
| | - Henry Du
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology , Hoboken, New Jersey 07030, United States
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32
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Kim HW, Kim JW, Jo SH, Lee CL, Lee WK, Park SS, Chung B, Yoo SI. pH-Responsive assembly of metal nanoparticles and fluorescent dyes by diblock copolymer micelles. SOFT MATTER 2015; 11:4402-4407. [PMID: 25959746 DOI: 10.1039/c5sm00824g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hybrid assemblies consisting of metal nanoparticles (NPs) and fluorophores are quite interesting because the intrinsic properties of fluorophores can be engineered in the assembled structure. In this regard, we utilized the self-segregation properties of block copolymer micelles to organize metal NPs and fluorophores simultaneously in a specific arrangement. From the viewpoint of assembly methods, we first encapsulated Au NPs in the PS cores of polystyrene-block-poly(acrylic acid) (PS-PAA) micelles. Then, positively charged fluorescent dyes of rhodamine 123 (R123) were bound to the negatively charged PAA coronas by electrostatic interactions. Since carboxylic acid in the PAA block is a weak acid, the degree of R123 binding to PS-PAA micelles can be adjusted by varying the pH of the solution. Therefore, by changing the pH, we were able to control the assembly and disassembly of R123 molecules to PS-PAA micelles and the corresponding change in the fluorescence signal.
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Affiliation(s)
- Hyun Woo Kim
- Department of Polymer Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Korea.
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33
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Basché T, Bottin A, Li C, Müllen K, Kim JH, Sohn BH, Prabhakaran P, Lee KS. Energy and charge transfer in nanoscale hybrid materials. Macromol Rapid Commun 2015; 36:1026-46. [PMID: 25761127 DOI: 10.1002/marc.201400738] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 02/10/2015] [Indexed: 12/12/2022]
Abstract
Hybrid materials composed of colloidal semiconductor quantum dots and π-conjugated organic molecules and polymers have attracted continuous interest in recent years, because they may find applications in bio-sensing, photodetection, and photovoltaics. Fundamental processes occurring in these nanohybrids are light absorption and emission as well as energy and/or charge transfer between the components. For future applications it is mandatory to understand, control, and optimize the wide parameter space with respect to chemical assembly and the desired photophysical properties. Accordingly, different approaches to tackle this issue are described here. Simple organic dye molecules (Dye)/quantum dot (QD) conjugates are studied with stationary and time-resolved spectroscopy to address the dynamics of energy and ultra-fast charge transfer. Micellar as well as lamellar nanostructures derived from diblock copolymers are employed to fine-tune the energy transfer efficiency of QD donor/dye acceptor couples. Finally, the transport of charges through organic components coupled to the quantum dot surface is discussed with an emphasis on functional devices.
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Affiliation(s)
- Thomas Basché
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55099, Mainz, Germany
| | - Anne Bottin
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55099, Mainz, Germany
| | - Chen Li
- Max Planck-Institut für Polymerforschung, Ackermannweg 10, 55128, Mainz, Germany
| | - Klaus Müllen
- Max Planck-Institut für Polymerforschung, Ackermannweg 10, 55128, Mainz, Germany
| | - Jeong-Hee Kim
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul, 151-747, South Korea
| | - Byeong-Hyeok Sohn
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul, 151-747, South Korea
| | - Prem Prabhakaran
- Department of Advanced Materials, Hannam University, Daejeon, 305-811, South Korea
| | - Kwang-Sup Lee
- Department of Advanced Materials, Hannam University, Daejeon, 305-811, South Korea
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34
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Kim JH, Kwon WJ, Sohn BH. Supracolloidal polymer chains of diblock copolymer micelles. Chem Commun (Camb) 2015; 51:3324-7. [DOI: 10.1039/c4cc09518a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Directional attraction with lateral repulsion between colloidal nanoparticles can create their supracolloidal chains.
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Affiliation(s)
- Jeong-Hee Kim
- Department of Chemistry
- Seoul National University
- Seoul
- Korea
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35
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Zhu SJ, Kong L, Wang H, Tian YP, Li SL, Xue ZM, Xu XY, Yang JX. Water soluble fluorophore-carbazole–Au–DNA nanohybrid: enhanced two-photon absorption for living cell imaging application. RSC Adv 2015. [DOI: 10.1039/c5ra13791h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Water soluble L–Au–DNA nanohybrid exhibits enhanced 2PA properties that can widely and evenly uptake into the lysosome of HepG2 cells.
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Affiliation(s)
- Shu-Juan Zhu
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Lin Kong
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Hui Wang
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Yu-Peng Tian
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Sheng-Li Li
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Zhao-Ming Xue
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Xian-Yun Xu
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
| | - Jia-Xiang Yang
- Department of Chemistry
- Key Laboratory of Inorganic Materials Chemistry of Anhui Province
- Anhui University
- Hefei
- PR China
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36
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Kochuveedu ST, Kim DH. Surface plasmon resonance mediated photoluminescence properties of nanostructured multicomponent fluorophore systems. NANOSCALE 2014; 6:4966-4984. [PMID: 24710702 DOI: 10.1039/c4nr00241e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The interaction between light and matter is the fundamental aspect of many optoelectronic applications. The efficiency of such devices is mainly dictated by the light emitting properties of fluorophores. Unfortunately, the intensity of emission is adversely affected by surface defects, scattering and chemical instability. Therefore, enhancing the luminescence of fluorophores is necessary for better implementation of nanocomposites in biological and optical applications. There are many interesting phenomena which can be observed if the characteristics of the fluorophores and metal nanoparticles are integrated. Photoluminescence (PL) by fluorophores can be enhanced or quenched by the presence of neighboring plasmonic metal nanostructures. An unambiguous study of the mechanism behind the enhancement and the quenching of emission is necessary to obtain new insight into the interactions between light and metal-fluorophore nanocomposites. In this review the core aspect of combining plasmonic metal nanostructures with fluorophores is discussed by considering various functional roles of plasmonic metals in modifying the PL properties reported by various research groups. A few representative applications of SPR mediated luminescence are also discussed.
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Affiliation(s)
- Saji Thomas Kochuveedu
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea.
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37
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Kochuveedu ST, Son T, Lee Y, Lee M, Kim D, Kim DH. Revolutionizing the FRET-based light emission in core-shell nanostructures via comprehensive activity of surface plasmons. Sci Rep 2014; 4:4735. [PMID: 24751860 PMCID: PMC3994441 DOI: 10.1038/srep04735] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 04/01/2014] [Indexed: 01/18/2023] Open
Abstract
We demonstrate the surface-plasmon-induced enhancement of Förster resonance energy transfer (FRET)using a model multilayer core-shell nanostructure consisting of an Au core and surrounding FRET pairs, i.e., CdSe quantum dot donors and S101 dye acceptors. The multilayer configuration was demonstrated to exhibit synergistic effects of surface plasmon energy transfer from the metal to the CdSe and plasmon-enhanced FRET from the quantum dots to the dye. With precise control over the distance between the components in the nanostructure, significant improvement in the emission of CdSe was achieved by combined resonance energy transfer and near-field enhancement by the metal, as well as subsequent improvement in the emission of dye induced by the enhanced emission of CdSe. Consequently, the Förster radius was increased to 7.92 nm and the FRET efficiency was improved to 86.57% in the tailored plasmonic FRET nanostructure compared to the conventional FRET system (22.46%) without plasmonic metals.
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Affiliation(s)
- Saji Thomas Kochuveedu
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Taehwang Son
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea
| | - Youmin Lee
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Minyung Lee
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Donghyun Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea
| | - Dong Ha Kim
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
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38
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Zhang X, Marocico CA, Lunz M, Gerard VA, Gun'ko YK, Lesnyak V, Gaponik N, Susha AS, Rogach AL, Bradley AL. Experimental and theoretical investigation of the distance dependence of localized surface plasmon coupled Förster resonance energy transfer. ACS NANO 2014; 8:1273-83. [PMID: 24490807 DOI: 10.1021/nn406530m] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The distance dependence of localized surface plasmon (LSP) coupled Förster resonance energy transfer (FRET) is experimentally and theoretically investigated using a trilayer structure composed of separated monolayers of donor and acceptor quantum dots with an intermediate Au nanoparticle layer. The dependence of the energy transfer efficiency, rate, and characteristic distance, as well as the enhancement of the acceptor emission, on the separations between the three constituent layers is examined. A d(-4) dependence of the energy transfer rate is observed for LSP-coupled FRET between the donor and acceptor planes with the increased energy transfer range described by an enhanced Förster radius. The conventional FRET rate also follows a d(-4) dependence in this geometry. The conditions under which this distance dependence is valid for LSP-coupled FRET are theoretically investigated. The influence of the placement of the intermediate Au NP is investigated, and it is shown that donor-plasmon coupling has a greater influence on the characteristic energy transfer range in this LSP-coupled FRET system. The LSP-enhanced Förster radius is dependent on the Au nanoparticle concentration. The potential to tune the characteristic energy transfer distance has implications for applications in nanophotonic devices or sensors.
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Affiliation(s)
- Xia Zhang
- School of Physics and CRANN, Trinity College , Dublin 2, Ireland
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39
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Niu L, Cheng K, Wu Y, Wang T, Shi Q, Liu D, Du Z. Sensitivity improved plasmonic gold nanoholes array biosensor by coupling quantum-dots for the detection of specific biomolecular interactions. Biosens Bioelectron 2013; 50:137-42. [DOI: 10.1016/j.bios.2013.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/28/2013] [Accepted: 06/10/2013] [Indexed: 12/31/2022]
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40
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Arifin E, Lee JK. The Distance-Dependent Fluorescence Enhancement Phenomena in Uniform Size Ag@SiO2@SiO2(dye) Nanocomposites. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.539] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Xiao Q, Gao H, Lu C, Yuan Q. Gold nanoparticle-based optical probes for sensing aminothiols. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.07.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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42
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Zhao P, Zhu Y, Yang X, Fan K, Shen J, Li C. Facile synthesis of upconversion luminescent mesoporous Y2O3:Er microspheres and metal enhancement using gold nanoparticles. RSC Adv 2012. [DOI: 10.1039/c2ra21345a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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