1
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Gharbi AM, Biswas DS, Crégut O, Malý P, Didier P, Klymchenko A, Léonard J. Exciton annihilation and diffusion length in disordered multichromophoric nanoparticles. NANOSCALE 2024; 16:11550-11563. [PMID: 38868990 DOI: 10.1039/d4nr00325j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Efficient exciton transport is the essential property of natural and synthetic light-harvesting (LH) devices. Here we investigate exciton transport properties in LH organic polymer nanoparticles (ONPs) of 40 nm diameter. The ONPs are loaded with a rhodamine B dye derivative and bulky counterion, enabling dye loadings as high as 0.3 M, while preserving fluorescence quantum yields larger than 30%. We use time-resolved fluorescence spectroscopy to monitor exciton-exciton annihilation (EEA) kinetics within the ONPs dispersed in water. We demonstrate that unlike the common practice for photoluminescence investigations of EEA, the non-uniform intensity profile of the excitation light pulse must be taken into account to analyse reliably intensity-dependent population dynamics. Alternatively, a simple confocal detection scheme is demonstrated, which enables (i) retrieving the correct value for the bimolecular EEA rate which would otherwise be underestimated by a typical factor of three, and (ii) revealing minor EEA by-products otherwise unnoticed. Considering the ONPs as homogeneous rigid solutions of weakly interacting dyes, we postulate an incoherent exciton hoping mechanism to infer a diffusion constant exceeding 0.003 cm2 s-1 and a diffusion length as large as 70 nm. This work demonstrates the success of the present ONP design strategy at engineering efficient exciton transport in disordered multichromophoric systems.
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Affiliation(s)
| | | | - Olivier Crégut
- IPCMS, Université de Strasbourg - CNRS, Strasbourg, France.
| | - Pavel Malý
- Charles University, Prague, Czech Republic
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2
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Zhu W, Wu Y, Zhang Y, Sukhanov AA, Chu Y, Zhang X, Zhao J, Voronkova VK. Preparation of Xanthene-TEMPO Dyads: Synthesis and Study of the Radical Enhanced Intersystem Crossing. Int J Mol Sci 2023; 24:11220. [PMID: 37446398 DOI: 10.3390/ijms241311220] [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: 05/30/2023] [Revised: 07/03/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
We prepared a rhodamine-TEMPO chromophore-radical dyad (RB-TEMPO) to study the radical enhanced intersystem crossing (REISC). The visible light-harvesting chromophore rhodamine is connected with the TEMPO (a nitroxide radical) via a C-N bond. The UV-vis absorption spectrum indicates negligible electron interaction between the two units at the ground state. Interestingly, the fluorescence of the rhodamine moiety is strongly quenched in RB-TEMPO, and the fluorescence lifetime of the rhodamine moiety is shortened to 0.29 ns, from the lifetime of 3.17 ns. We attribute this quenching effect to the intramolecular electron spin-spin interaction between the nitroxide radical and the photoexcited rhodamine chromophore. Nanosecond transient absorption spectra confirm the REISC in RB-TEMPO, indicated by the detection of the rhodamine chromophore triplet excited state; the lifetime was determined as 128 ns, which is shorter than the native rhodamine triplet state lifetime (0.58 μs). The zero-field splitting (ZFS) parameters of the triplet state of the chromophore were determined with the pulsed laser excited time-resolved electron paramagnetic resonance (TREPR) spectra. RB-TEMPO was used as a photoinitiator for the photopolymerization of pentaerythritol triacrylate (PETA). These studies are useful for the design of heavy atom-free triplet photosensitizers, the study of the ISC, and the electron spin dynamics of the radical-chromophore systems upon photoexcitation.
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Affiliation(s)
- Wenhui Zhu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
| | - Yanran Wu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
| | - Yiyan Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
| | - Andrey A Sukhanov
- Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of Russian Academy of Sciences, Kazan 420029, Russia
| | - Yuqi Chu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
| | - Xue Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
| | - Jianzhang Zhao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
| | - Violeta K Voronkova
- Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of Russian Academy of Sciences, Kazan 420029, Russia
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3
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DuBose JT, Kamat PV. How Pendant Groups Dictate Energy and Electron Transfer in Perovskite-Rhodamine Light Harvesting Assemblies. J Am Chem Soc 2023; 145:4601-4612. [PMID: 36795798 DOI: 10.1021/jacs.2c12248] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Energy and electron transfer processes allow for efficient manipulation of excited states within light harvesting assemblies for photocatalytic and optoelectronic applications. We have now successfully probed the influence of acceptor pendant group functionalization on the energy and electron transfer between CsPbBr3 perovskite nanocrystals and three rhodamine-based acceptor molecules. The three acceptors─rhodamine B (RhB), rhodamine isothiocyanate (RhB-NCS), and rose Bengal (RoseB)─contain an increasing degree of pendant group functionalization that affects their native excited state properties. When interacting with CsPbBr3 as an energy donor, photoluminescence excitation spectroscopy reveals that singlet energy transfer occurs with all three acceptors. However, the acceptor functionalization directly influences several key parameters that dictate the excited state interactions. For example, RoseB binds to the nanocrystal surface with an apparent association constant (Kapp = 9.4 × 106 M-1) 200 times greater than RhB (Kapp = 0.05 × 106 M-1), thus influencing the rate of energy transfer. Femtosecond transient absorption reveals the observed rate constant of singlet energy transfer (kEnT) is an order-of-magnitude greater for RoseB (kEnT = 1 × 1011 s-1) than for RhB and RhB-NCS. In addition to energy transfer, each acceptor had a subpopulation of molecules (∼30%) that underwent electron transfer as a competing pathway. Thus, the structural influence of acceptor moieties must be considered for both excited state energy and electron transfer in nanocrystal-molecular hybrids. The competition between electron and energy transfer further highlights the complexity of excited state interactions in nanocrystal-molecular complexes and the need for careful spectroscopic analysis to elucidate competitive pathways.
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Affiliation(s)
- Jeffrey T DuBose
- Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Prashant V Kamat
- Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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4
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Kritchenkov IS, Melnikov AS, Serdobintsev PS, Khodorkovskii MA, Pavlovskii VV, Porsev VV, Tunik SP. Energy transfer processes in excited states of {[Ir(N^C)2(N^N)]+‐Rhodamine} dyad; experimental and theoretical study. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ilya S. Kritchenkov
- Saint-Petersburg State University: Sankt-peterburgskij gosudarstvennyj universitet Institute of Chemistry RUSSIAN FEDERATION
| | - Alexei S. Melnikov
- Peter the Great Saint Petersburg Polytechnic University: Sankt-Peterburgskij politehniceskij universitet Petra Velikogo Institute of Biomedical Systems and Biotechnology RUSSIAN FEDERATION
| | - Pavel S. Serdobintsev
- Peter the Great Saint Petersburg Polytechnic University: Sankt-Peterburgskij politehniceskij universitet Petra Velikogo Institute of Biomedical Systems and Biotechnology RUSSIAN FEDERATION
| | - Mikhail A. Khodorkovskii
- Peter the Great Saint Petersburg Polytechnic University: Sankt-Peterburgskij politehniceskij universitet Petra Velikogo Institute of Biomedical Systems and Biotechnology RUSSIAN FEDERATION
| | - Vladimir V. Pavlovskii
- Saint Petersburg University: Sankt-peterburgskij gosudarstvennyj universitet Institute of Chemistry RUSSIAN FEDERATION
| | - Vitaly V. Porsev
- Saint Petersburg State University: Sankt-peterburgskij gosudarstvennyj universitet Institute of Chemistry RUSSIAN FEDERATION
| | - Sergey P. Tunik
- Saint Petersburg State University: Sankt-peterburgskij gosudarstvennyj universitet Institute of Chemistry Universitetskii pr., 26 198504 St. Petersburg RUSSIAN FEDERATION
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5
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Liu M, Wang J, Liang G, Luo X, Zhao G, He S, Wang L, Liang W, Li J, Wu K. Spin-enabled photochemistry using nanocrystal-molecule hybrids. Chem 2022. [DOI: 10.1016/j.chempr.2022.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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6
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Liang C, Cheng L, Zhang S, Yang S, Liu W, Xie J, Li MD, Chai Z, Wang Y, Wang S. Boosting the Optoelectronic Performance by Regulating Exciton Behaviors in a Porous Semiconductive Metal–Organic Framework. J Am Chem Soc 2022; 144:2189-2196. [DOI: 10.1021/jacs.1c11150] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Chengyu Liang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Liwei Cheng
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Shitong Zhang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, People’s Republic of China
| | - Sirui Yang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Province, Shantou University, Shantou 515063, People’s Republic of China
| | - Wei Liu
- School of Environment and Material Engineering, Yantai University, Yantai 264005, People’s Republic of China
| | - Jian Xie
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Ming-De Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Province, Shantou University, Shantou 515063, People’s Republic of China
| | - Zhifang Chai
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yaxing Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
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Jiménez-Mancilla NP, Aranda-Lara L, Morales-Ávila E, Camacho-López MA, Ocampo-García BE, Torres-García E, Estrada-Guadarrama JA, Santos-Cuevas CL, Isaac-Olivé K. Electron transfer reactions in rhodamine: Potential use in photodynamic therapy. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Yang W, Liu Y, McBride JR, Lian T. Ultrafast and Long-Lived Transient Heating of Surface Adsorbates on Plasmonic Semiconductor Nanocrystals. NANO LETTERS 2021; 21:453-461. [PMID: 33263400 DOI: 10.1021/acs.nanolett.0c03911] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic photocatalysts have demonstrated promising potential for enhancing the selectivity and efficiency of important chemical transformations. However, the relative contributions of nonphotothermal (i.e., hot carrier) and photothermal pathways remain a question of intense current debate, and the time scale and extent of surface adsorbate temperature change are still poorly understood. Using p-type Cu2-xSe nanocrystals as a semiconductor plasmonic platform and adsorbed Rhodamine B as a surface thermometer and hot carrier acceptor, we measure directly by transient absorption spectroscopy that the adsorbate temperature rises and decays with time constants of 1.4 ± 0.4 and 471 ± 126 ps, respectively, after the excitation of Cu2-xSe plasmon band at 800 nm. These time constants are similar to those for Cu2-xSe lattice temperature, suggesting that fast thermal equilibrium between the adsorbates and nanocrystal lattice is the main adsorbate heating pathway. This finding provides insights into the transient heating effect on surface adsorbates and their roles in plasmonic photocatalysis.
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Affiliation(s)
- Wenxing Yang
- Department of Chemistry, Emory University, 1515 Dickey Drive Northeast, Atlanta, Georgia 30322, United States
- Department of Chemistry - Ångström Laboratory, Physical Chemistry, Uppsala University, SE-75120 Uppsala, Sweden
| | - Yawei Liu
- Department of Chemistry, Emory University, 1515 Dickey Drive Northeast, Atlanta, Georgia 30322, United States
| | - James R McBride
- Department of Chemistry, The Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive Northeast, Atlanta, Georgia 30322, United States
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9
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New combination chemotherapy of cisplatin with an electron-donating compound for treatment of multiple cancers. Sci Rep 2021; 11:788. [PMID: 33436996 PMCID: PMC7804005 DOI: 10.1038/s41598-020-80876-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/29/2020] [Indexed: 02/08/2023] Open
Abstract
Cisplatin is the first and most widely used platinum-based chemotherapy drug and is the cornerstone agent in treating a broad spectrum of cancers. However, its clinical application is often limited by severe toxic side effects and drug resistance. Based on the discovered dissociative electron transfer mechanism of cisplatin, a novel combination of cisplatin with [9-(2-carboxyphenyl)-6-diethylamino-3-xanthenylidene]-diethylammonium chloride (basic violet 10, BV10) is proposed to potentiate the chemotherapeutic effect of cisplatin. Here, we show that this combination enhances the anti-cancer effect of cisplatin in both in vitro cell lines and in vivo xenograft mouse models of cisplatin-sensitive and -resistant lung, ovarian and cervical cancers while introducing minimal additional toxic side effects. Furthermore, femtosecond time-resolved laser spectroscopic measurements demonstrate that cisplatin reacts with BV10 via an electron transfer mechanism. These results indicate that the combination of cisplatin with BV10 is promising for improving the chemotherapy of cancers with various extents of cisplatin resistance.
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10
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Martínek M, Váňa J, Šebej P, Navrátil R, Slanina T, Ludvíková L, Roithová J, Klán P. Photochemistry of a 9‐Dithianyl‐Pyronin Derivative: A Cornucopia of Reaction Intermediates Lead to Common Photoproducts. Chempluschem 2020; 85:2230-2242. [DOI: 10.1002/cplu.202000370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/12/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Marek Martínek
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Jiří Váňa
- Institute of Organic Chemistry and Technology Faculty of Chemical Technology University of Pardubice Studentská 573 532 10 Pardubice Czech Republic
| | - Peter Šebej
- RECETOX Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Rafael Navrátil
- Department of Organic Chemistry Faculty of Science Charles University Hlavova 2030/8 128 43 Prague Czech Republic
| | - Tomáš Slanina
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Lucie Ludvíková
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Jana Roithová
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Petr Klán
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 625 00 Brno Czech Republic
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11
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Zhou D, Li X, Zhou Q, Zhu H. Infrared driven hot electron generation and transfer from non-noble metal plasmonic nanocrystals. Nat Commun 2020; 11:2944. [PMID: 32522995 PMCID: PMC7287091 DOI: 10.1038/s41467-020-16833-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 05/28/2020] [Indexed: 11/26/2022] Open
Abstract
Non-noble metal plasmonic materials, e.g. doped semiconductor nanocrystals, compared to their noble metal counterparts, have shown unique advantages, including broadly tunable plasmon frequency (from visible to infrared) and rich surface chemistry. However, the fate and harvesting of hot electrons from these non-noble metal plasmons have been much less explored. Here we report plasmon driven hot electron generation and transfer from plasmonic metal oxide nanocrystals to surface adsorbed molecules by ultrafast transient absorption spectroscopy. We show unambiguously that under infrared light excitation, hot electron transfers in ultrafast timescale (<50 fs) with an efficiency of 1.4%. The excitation wavelength and fluence dependent study indicates that hot electron transfers right after Landau damping before electron thermalization. We revealed the efficiency-limiting factors and provided improvement strategies. This study paves the way for designing efficient infrared light absorption and photochemical conversion applications based on non-noble metal plasmonic materials.
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Affiliation(s)
- Dongming Zhou
- The Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Xufeng Li
- The Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Qiaohui Zhou
- The Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Haiming Zhu
- The Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
- State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
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12
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Luo X, Liang G, Han Y, Li Y, Ding T, He S, Liu X, Wu K. Triplet Energy Transfer from Perovskite Nanocrystals Mediated by Electron Transfer. J Am Chem Soc 2020; 142:11270-11278. [DOI: 10.1021/jacs.0c04583] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xiao Luo
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Guijie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, Hubei 441053, China
| | - Yaoyao Han
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yulu Li
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Tao Ding
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Shan He
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Xue Liu
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Kaifeng Wu
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
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13
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Parisi C, Failla M, Fraix A, Rolando B, Gianquinto E, Spyrakis F, Gazzano E, Riganti C, Lazzarato L, Fruttero R, Gasco A, Sortino S. Fluorescent Nitric Oxide Photodonors Based on BODIPY and Rhodamine Antennae. Chemistry 2019; 25:11080-11084. [PMID: 31074543 DOI: 10.1002/chem.201902062] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Indexed: 11/11/2022]
Abstract
Two novel NO photodonors (NOPDs) based on BODIPY and Rhodamine antennae activatable with the highly biocompatible green light are reported. Both NOPDs exhibit considerable fluorescence emission and release NO with remarkable quantum efficiencies. The combination of the photoreleasing and emissive performance for both compounds is superior to those exhibited by other NOPDs based on similar light-harvesting centres, making them very intriguing for image-guided phototherapeutic applications. Preliminary biological data prove their easy visualization in cell environment due to the intense green and orange-red fluorescence and their photodynamic action on cancer cells due to the NO photo-liberated.
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Affiliation(s)
- Cristina Parisi
- Laboratory of Photochemistry, Department of Drug Sciences, University of Catania, 95125, Catania, Italy
| | - Mariacristina Failla
- Laboratory of Photochemistry, Department of Drug Sciences, University of Catania, 95125, Catania, Italy.,Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Aurore Fraix
- Laboratory of Photochemistry, Department of Drug Sciences, University of Catania, 95125, Catania, Italy
| | - Barbara Rolando
- Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Eleonora Gianquinto
- Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Francesca Spyrakis
- Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Elena Gazzano
- Department of Oncology, University of Torino, Via Santena 5/bis, 10126, Torino, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, Via Santena 5/bis, 10126, Torino, Italy
| | - Loretta Lazzarato
- Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Roberta Fruttero
- Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Alberto Gasco
- Department of Science and Technology, University of Torino, Via Pietro Giuria 9, 10125, Torino, Italy
| | - Salvatore Sortino
- Laboratory of Photochemistry, Department of Drug Sciences, University of Catania, 95125, Catania, Italy
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14
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Haimerl JM, Ghosh I, König B, Lupton JM, Vogelsang J. Chemical Photocatalysis with Rhodamine 6G: Investigation of Photoreduction by Simultaneous Fluorescence Correlation Spectroscopy and Fluorescence Lifetime Measurements. J Phys Chem B 2018; 122:10728-10735. [DOI: 10.1021/acs.jpcb.8b08615] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Slanina T, Oberschmid T. Rhodamine 6G Radical: A Spectro (Fluoro) Electrochemical and Transient Spectroscopic Study. ChemCatChem 2018. [DOI: 10.1002/cctc.201800971] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Tomáš Slanina
- Department of Chemistry and RECETOX Faculty of Science; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
- Institute of Organic Chemistry and Chemical Biology; Goethe University Frankfurt; 60323 Frankfurt am Main Germany
| | - Teresa Oberschmid
- Institute of Organic Chemistry Faculty of Chemistry and Pharmacy; University of Regensburg; 93040 Regensburg Germany
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16
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Sodano F, Gazzano E, Fraix A, Rolando B, Lazzarato L, Russo M, Blangetti M, Riganti C, Fruttero R, Gasco A, Sortino S. A Molecular Hybrid for Mitochondria-Targeted NO Photodelivery. ChemMedChem 2017; 13:87-96. [DOI: 10.1002/cmdc.201700608] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/04/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Federica Sodano
- Department of Science and Drug Technology; University of Torino; 10125 Torino Italy
| | - Elena Gazzano
- Department of Oncology; University of Torino; Via Santena 5/bis 10126 Torino Italy
| | - Aurore Fraix
- Laboratory of Photochemistry, Department of Drug Sciences; University of Catania; 95125 Catania Italy
| | - Barbara Rolando
- Department of Science and Drug Technology; University of Torino; 10125 Torino Italy
| | - Loretta Lazzarato
- Department of Science and Drug Technology; University of Torino; 10125 Torino Italy
| | - Marina Russo
- Laboratory of Photochemistry, Department of Drug Sciences; University of Catania; 95125 Catania Italy
| | - Marco Blangetti
- Department of Science and Drug Technology; University of Torino; 10125 Torino Italy
| | - Chiara Riganti
- Department of Oncology; University of Torino; Via Santena 5/bis 10126 Torino Italy
| | - Roberta Fruttero
- Department of Science and Drug Technology; University of Torino; 10125 Torino Italy
| | - Alberto Gasco
- Department of Science and Drug Technology; University of Torino; 10125 Torino Italy
| | - Salvatore Sortino
- Laboratory of Photochemistry, Department of Drug Sciences; University of Catania; 95125 Catania Italy
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17
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Nettels D, Haenni D, Maillot S, Gueye M, Barth A, Hirschfeld V, Hübner CG, Léonard J, Schuler B. Excited-state annihilation reduces power dependence of single-molecule FRET experiments. Phys Chem Chem Phys 2015; 17:32304-15. [DOI: 10.1039/c5cp05321h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Singlet–singlet annihilation between FRET dyes is evident in nanosecond fluorescence cross-correlation measurements.
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Affiliation(s)
- Daniel Nettels
- Department of Biochemistry
- University of Zurich
- 8057 Zurich
- Switzerland
| | - Dominik Haenni
- Department of Biochemistry
- University of Zurich
- 8057 Zurich
- Switzerland
| | - Sacha Maillot
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE
- Université de Strasbourg
- 67034 Strasbourg Cedex 2
- France
| | - Moussa Gueye
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE
- Université de Strasbourg
- 67034 Strasbourg Cedex 2
- France
| | - Anders Barth
- Institute of Physics
- University of Lübeck
- 23562 Lübeck
- Germany
| | | | | | - Jérémie Léonard
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE
- Université de Strasbourg
- 67034 Strasbourg Cedex 2
- France
| | - Benjamin Schuler
- Department of Biochemistry
- University of Zurich
- 8057 Zurich
- Switzerland
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18
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Stennett EMS, Ciuba MA, Levitus M. Photophysical processes in single molecule organic fluorescent probes. Chem Soc Rev 2014; 43:1057-75. [DOI: 10.1039/c3cs60211g] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Wu K, Liu Z, Zhu H, Lian T. Exciton annihilation and dissociation dynamics in group II-V Cd3P2 quantum dots. J Phys Chem A 2013; 117:6362-72. [PMID: 23611312 DOI: 10.1021/jp402511m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Semiconductor quantum dots (QDs) have emerged as a new class of light harvesting materials for solar energy conversion due to their unique size-dependent properties. Most recent studies have focused on II-VI group (such as CdX, X = S, Se, and Te) QDs and lead salt (such as PbS, PbSe, and PbTe) QDs. In this paper, we investigate exciton dissociation and annihilation dynamics of Cd3P2 QDs, a low bulk band gap (0.55 eV) II-V group material, to explore their potential application as a light harvesting component for photoreduction systems. For Cd3P2 QDs with 1S exciton band at 650 nm, a long-lived single exciton state with lifetime of 259 ns and a high emission quantum yield of 65% were observed. In Cd3P2 QD-rhodamine B (RhB, an electron acceptor) complexes, excitons in QDs could be dissociated by ultrafast electron transfer to RhB (6.2 ps), and the charge separated state had a long lifetime (31 ns). Although the photoinduced electron transfer rate in QD-RhB complexes decreased with increasing QD size, electron transfer was observed in QDs with 1S exciton bands at wavelength as long as 1050 nm. Compared with CdSe and PbS, Cd3P2 QDs with both more strongly reducing excited states and broader absorption in the visible and near IR region can be readily achieved, making them potential photosensitizers for photodriven water or CO2 reduction reactions.
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Affiliation(s)
- Kaifeng Wu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
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20
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Wilker MB, Schnitzenbaumer KJ, Dukovic G. Recent Progress in Photocatalysis Mediated by Colloidal II-VI Nanocrystals. Isr J Chem 2012; 52:1002-1015. [PMID: 24115781 PMCID: PMC3791552 DOI: 10.1002/ijch.201200073] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 10/29/2012] [Indexed: 12/14/2022]
Abstract
The use of photoexcited electrons and holes in semiconductor nanocrystals as reduction and oxidation reagents is an intriguing way of harvesting photon energy to drive chemical reactions. This review focuses on recent research efforts to understand and control the photocatalytic processes mediated by colloidal II-VI nanocrystalline materials, such as cadmium and zinc chalcogenides. First, we highlight how nanocrystal properties govern the rates and efficiencies of charge-transfer processes relevant to photocatalysis. We then describe the use of nanocrystal catalyst heterostructures for fuel-forming reactions, most commonly H2 generation. Finally, we review the use of nanocrystal photocatalysis as a synthetic tool for metal-semiconductor nano-heterostructures.
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Affiliation(s)
- Molly B Wilker
- Department of Chemistry and Biochemistry, University of Colorado BoulderBoulder, CO 80309, USA
| | - Kyle J Schnitzenbaumer
- Department of Chemistry and Biochemistry, University of Colorado BoulderBoulder, CO 80309, USA
| | - Gordana Dukovic
- Department of Chemistry and Biochemistry, University of Colorado BoulderBoulder, CO 80309, USA
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21
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Mani T, Tanabe M, Yamauchi S, Tkachenko NV, Vinogradov SA. Modulation of Visible Room Temperature Phosphorescence by Weak Magnetic Fields. J Phys Chem Lett 2012; 3:3115-3119. [PMID: 26296015 DOI: 10.1021/jz301166e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Magnetic control over excited states of molecules presents interest for many applications. Here we show for the first time that visible room temperature phosphorescence in multichromophoric donor-acceptor systems can be modulated by weak magnetic fields (<1 T) via magnetic field effects (MFE) on the spin dynamics in photogenerated radical pairs (RPs). The studied compounds comprise Pt porphyrin (PtP)-Rosamine B (RosB) dyads, which possess strong visible absorption bands and phosphoresce at room temperature. The observed MFE is unique in that it occurs upon direct excitation of the PtP in the dyads, whereby ultrafast quantitative formation of the local PtP triplet state precedes the occurrence of radical intermediates. A model explaining the effect is proposed, which is based on reversible electron transfer between the local triplet state and a long-lived RP. External magnetic field modulates spin dynamics in the RP, affecting contribution of the singlet RP recombination channel and thereby influencing phosphorescence.
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Affiliation(s)
- Tomoyasu Mani
- †Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Mana Tanabe
- ‡Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Seigo Yamauchi
- ‡Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Nikolai V Tkachenko
- §Department of Chemistry and Bioengineering, Tampere University of Technology, FIN-33101 Tampere, Finland
| | - Sergei A Vinogradov
- †Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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22
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Sun Q, Lu R, Yu A. Structural Heterogeneity in the Collision Complex between Organic Dyes and Tryptophan in Aqueous Solution. J Phys Chem B 2011; 116:660-6. [DOI: 10.1021/jp2100304] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Qinfang Sun
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Rong Lu
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Anchi Yu
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
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23
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Comesaña-Hermo M, Estivill R, Ciuculescu D, Amiens C, Farle M, Batat P, Jonusauskas G, McClenaghan ND, Lecante P, Tardin C, Mazeres S. Photomodulation of the magnetisation of Co nanocrystals decorated with rhodamine B. Chemphyschem 2011; 12:2915-9. [PMID: 21976370 DOI: 10.1002/cphc.201100616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Miguel Comesaña-Hermo
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
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24
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Abstract
Direct stochastic optical reconstruction microscopy (dSTORM) uses conventional fluorescent probes such as labeled antibodies or chemical tags for subdiffraction resolution fluorescence imaging with a lateral resolution of ∼20 nm. In contrast to photoactivated localization microscopy (PALM) with photoactivatable fluorescent proteins, dSTORM experiments start with bright fluorescent samples in which the fluorophores have to be transferred to a stable and reversible OFF state. The OFF state has a lifetime in the range of 100 milliseconds to several seconds after irradiation with light intensities low enough to ensure minimal photodestruction. Either spontaneously or photoinduced on irradiation with a second laser wavelength, a sparse subset of fluorophores is reactivated and their positions are precisely determined. Repetitive activation, localization and deactivation allow a temporal separation of spatially unresolved structures in a reconstructed image. Here we present a step-by-step protocol for dSTORM imaging in fixed and living cells on a wide-field fluorescence microscope, with standard fluorescent probes focusing especially on the photoinduced fine adjustment of the ratio of fluorophores residing in the ON and OFF states. Furthermore, we discuss labeling strategies, acquisition parameters, and temporal and spatial resolution. The ultimate step of data acquisition and data processing can be performed in seconds to minutes.
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25
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Li X, Zhu R, Yu A, Zhao XS. Ultrafast Photoinduced Electron Transfer between Tetramethylrhodamine and Guanosine in Aqueous Solution. J Phys Chem B 2011; 115:6265-71. [DOI: 10.1021/jp200455b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xun Li
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Department of Chemical Biology, College of Chemistry and Molecular Engineering, and Biodynamic Optical Imaging Center, Peking University, Beijing 100871, People's Republic of China
| | - Ruixue Zhu
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
| | - Anchi Yu
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
| | - Xin Sheng Zhao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Department of Chemical Biology, College of Chemistry and Molecular Engineering, and Biodynamic Optical Imaging Center, Peking University, Beijing 100871, People's Republic of China
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26
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Zhu R, Li X, Zhao XS, Yu A. Photophysical Properties of Atto655 Dye in the Presence of Guanosine and Tryptophan in Aqueous Solution. J Phys Chem B 2011; 115:5001-7. [DOI: 10.1021/jp200876d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruixue Zhu
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Xun Li
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Department of Chemical Biology, College of Chemistry and Molecular Engineering, and Biodynamic Optical Imaging Center, Peking University, Beijing 100871, China
| | - Xin Sheng Zhao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Department of Chemical Biology, College of Chemistry and Molecular Engineering, and Biodynamic Optical Imaging Center, Peking University, Beijing 100871, China
| | - Anchi Yu
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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27
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van de Linde S, Krstić I, Prisner T, Doose S, Heilemann M, Sauer M. Photoinduced formation of reversible dye radicals and their impact on super-resolution imaging. Photochem Photobiol Sci 2011; 10:499-506. [DOI: 10.1039/c0pp00317d] [Citation(s) in RCA: 171] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Richards CI, Hsiang JC, Khalil AM, Hull NP, Dickson RM. FRET-enabled optical modulation for high sensitivity fluorescence imaging. J Am Chem Soc 2010; 132:6318-23. [PMID: 20397664 PMCID: PMC2874320 DOI: 10.1021/ja100175r] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fluorescence resonance energy transfer is utilized to engineer donor photophysics for facile signal amplification and selective fluorescence recovery from high background. This is generalized such that many different fluorophores can be used in optical modulation schemes to drastically improve fluorescence imaging sensitivity. Dynamic, simultaneous, and direct excitation of the acceptor brightens and optically modulates higher energy donor emission. The externally imposed modulation waveform enables selective donor fluorescence extraction through demodulation. By incorporating an acceptor with significant, spectrally shifted, dark-state population, necessary excitation intensities are quite low and agree well with simulated enhancements. Enhancement versus modulation frequency directly yields dark-state lifetimes in a simple ensemble measurement. Using the long-lived Cy5 dark state in conjunction with Cy3 donors, we demonstrate image extraction from a large background to yield >>10-fold sensitivity improvements through synchronously amplified fluorescence image recovery (SAFIRe).
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Affiliation(s)
- Chris I. Richards
- School of Chemistry and Biochemistry and Petit Institute for Biosciences and Bioengineering, Georgia Institute of Technology Atlanta, GA 30332-0400
| | - Jung-Cheng Hsiang
- School of Chemistry and Biochemistry and Petit Institute for Biosciences and Bioengineering, Georgia Institute of Technology Atlanta, GA 30332-0400
| | - Andrew M. Khalil
- School of Chemistry and Biochemistry and Petit Institute for Biosciences and Bioengineering, Georgia Institute of Technology Atlanta, GA 30332-0400
| | - Nathan P. Hull
- School of Chemistry and Biochemistry and Petit Institute for Biosciences and Bioengineering, Georgia Institute of Technology Atlanta, GA 30332-0400
| | - Robert M. Dickson
- School of Chemistry and Biochemistry and Petit Institute for Biosciences and Bioengineering, Georgia Institute of Technology Atlanta, GA 30332-0400
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29
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Chamier J, Leaner J, Crouch AM. Photoelectrochemical determination of inorganic mercury in aqueous solutions. Anal Chim Acta 2010; 661:91-6. [DOI: 10.1016/j.aca.2009.11.062] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Revised: 11/20/2009] [Accepted: 11/27/2009] [Indexed: 10/20/2022]
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30
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Corrie JET, Eccleston JF, Ferenczi MA, Moore MH, Turkenburg JP, Trentham DR. Ring-chain interconversion of sulforhodamine-amine conjugates involves an unusually labile CN bond and allows measurement of sulfonamide ionization kinetics. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1318] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Boulesbaa A, Issac A, Stockwell D, Huang Z, Huang J, Guo J, Lian T. Ultrafast Charge Separation at CdS Quantum Dot/Rhodamine B Molecule Interface. J Am Chem Soc 2007; 129:15132-3. [DOI: 10.1021/ja0773406] [Citation(s) in RCA: 204] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Abey Issac
- Department of Chemistry, Emory University, Atlanta, Georgia
| | - Dave Stockwell
- Department of Chemistry, Emory University, Atlanta, Georgia
| | | | - Jier Huang
- Department of Chemistry, Emory University, Atlanta, Georgia
| | - Jianchang Guo
- Department of Chemistry, Emory University, Atlanta, Georgia
| | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, Georgia
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32
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Saik VO, Goun AA, Fayer MD. Photoinduced electron transfer and geminate recombination for photoexcited acceptors in a pure donor solvent. J Chem Phys 2007; 120:9601-11. [PMID: 15267972 DOI: 10.1063/1.1712826] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photoinduced electron transfer and geminate recombination are studied for the systems rhodamine 3B (R3B(+)) and rhodamine 6G (R6G(+)), which are cations, in neat neutral N,N-dimethylaniline (DMA). Following photoexcitation of R3B(+) or R6G(+) (abbreviated as R(+)), an electron is transferred from DMA to give the neutral radical R and the cation DMA(+). Because the DMA hole acceptor is the neat solvent, the forward transfer rate is very large, approximately 5x10(12) s(-1). The forward transfer is followed by geminate recombination, which displays a long-lived component suggesting several percent of the radicals escape geminate recombination. Spectrally resolved pump-probe experiments are used in which the probe is a "white" light continuum, and the full time-dependent spectrum is recorded with a spectrometer/charge-coupled device. Observations of stimulated emission (excited state decay-forward electron transfer), the R neutral radical spectrum, and the DMA(+) radical cation spectrum as well as the ground-state bleach recovery (geminate recombination) make it possible to unambiguously follow the electron transfer kinetics. Theoretical modeling shows that the long-lived component can be explained without invoking hole hopping or spin-forbidden transitions.
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Affiliation(s)
- V O Saik
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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33
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Qu JQ, Wang LF, Li YZ, Sun GC, Zhu QJ, Xia CG. SYNTHESIS AND X-RAY CRYSTAL STRUCTURE OF A Cd(II) COMPLEX OF RHODAMINE B. ACTA ACUST UNITED AC 2006. [DOI: 10.1081/sim-100107704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Jian-Qiang Qu
- a State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou, 730000, P. R. China
| | - Liu-Fang Wang
- b State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou, 730000, P. R. China
| | - Yi-Zhi Li
- a State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou, 730000, P. R. China
| | - Gang-Chun Sun
- a State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou, 730000, P. R. China
| | - Qiao-Jun Zhu
- c Department of Chemistry , Tianshui Teachers College , Tianshui, 741000, P. R. China
| | - Chun-Gu Xia
- d State Key Laboratory of Oxo-Synthesis and Selective Oxidation , Chinese Academy of Sciences , Lanzhou Institute of Chemical Physics , Lanzhou, 730000, P. R. China
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34
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Glusac K, Goun A, Fayer MD. Photoinduced electron transfer and geminate recombination in the group head region of micelles. J Chem Phys 2006; 125:054712. [PMID: 16942246 DOI: 10.1063/1.2227392] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A pump-probe spectroscopic study of photoinduced forward electron transfer and geminate recombination between donors and acceptors located in the head group regions of micelles is presented. The hole donor is octadecyl-rhodamine B (ODRB) and the hole acceptor is N,N-dimethyl-aniline (DMA). The experiments are conducted as a function of the DMA concentration in the dodecyltrimethylammonium bromide and tetradecyltrimethylammonium bromide micelles. In spite of the fact that the absorptions of both the ODRB radical and ground state bleach spectrally overlap with the ODRB excited state absorption, a procedure that makes it possible to determine the geminate recombination dynamics is presented. These experiments are the first to measure the dynamics of geminate recombination in micelles, and the experiments have two orders of magnitude better time resolution than previous studies of forward transfer. The experimental data are compared to statistical mechanics theoretical calculations of both the forward transfer and the geminate recombination. The theory includes important aspects of the topology of the micelle and the diffusion of the donor-acceptors in the micelle head group region. A semiquantitative but nonquantitative agreement between theory and experiments is achieved.
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Affiliation(s)
- Ksenija Glusac
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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35
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Jiang Q, Spehar AM, Håkansson M, Suomi J, Ala-Kleme T, Kulmala S. Hot electron-induced cathodic electrochemiluminescence of rhodamine B at disposable oxide-coated aluminum electrodes. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2005.08.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Saik VO, Goun AA, Nanda J, Shirota K, Tavernier HL, Fayer MD. Photoinduced Intermolecular Electron Transfer in Liquid Solutions. J Phys Chem A 2004. [DOI: 10.1021/jp049391k] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V. O. Saik
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - A. A. Goun
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - J. Nanda
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Koichiro Shirota
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - H. L. Tavernier
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - M. D. Fayer
- Department of Chemistry, Stanford University, Stanford, California 94305
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37
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Navaratnam S, Parsons B. Kinetic and spectral properties of rhodamine 6G free radicals: a pulse radiolysis study. J Photochem Photobiol A Chem 2002. [DOI: 10.1016/s1010-6030(02)00265-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Dela Cruz JL, Blanchard GJ. The Influence of Chromophore Structure on Intermolecular Interactions. A Study of Selected Rhodamines in Polar Protic and Aprotic Solvents. J Phys Chem A 2002. [DOI: 10.1021/jp0260806] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- J. L. Dela Cruz
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824-1322
| | - G. J. Blanchard
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824-1322
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39
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Barroso J, Costela A, Garcı́a-Moreno I, Sastre R. Wavelength dependence of the nonlinear absorption properties of laser dyes in solid and liquid solutions. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00334-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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