1
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Ge J, Zhang XD, Li ZB, Xue BQ, Bai XL. The investigation of the ultrafast excited state deactivation mechanisms for coumarin 307 in different solvents. RSC Adv 2023; 13:21746-21753. [PMID: 37476044 PMCID: PMC10354496 DOI: 10.1039/d3ra03159d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/11/2023] [Indexed: 07/22/2023] Open
Abstract
The intramolecular charge transfer (ICT) and twisted intramolecular charge transfer (TICT) processes of coumarin 307 (C307) in different solvents were investigated by performing steady-state/time-resolved transient absorption spectroscopic and steady-state photoluminescence spectroscopic characterizations in combination with time-dependent density functional theoretical calculation (TDDFT). The study unveiled the remarkable influence of solvent polarity and the strength of intermolecular hydrogen bonds formed between the solutes and solvents on the relaxation dynamics of the electronic excited state. Significantly, the emergence of the TICT state was observed in polar solvents, specifically dimethylformamide (DMF) and dimethyl sulfoxidemethanol (DMSO), owing to their inherent polarity as well as the enhanced intermolecular hydrogen bonding interactions. Interestingly, even in a weak polar solvent such as methanol (MeOH), the TICT state was also observed due to the intensified hydrogen bonding effects. Conversely, nonpolar solvents, exemplified by 1,4-dioxane (Diox), resulted in the stabilization of the ICT state due to the augmented N-H⋯O hydrogen bonding interactions. The experimental findings were corroborated by the computational calculations, thus ensuring the reliability of the conclusions drawn. Furthermore, schematic diagrams were presented to illustrate the mechanisms underlying the excited-state deactivation. Overall, this investigation contributes valuable mechanistic insights and provides a comprehensive understanding of the photochemical and photophysical properties exhibited by coumarin dyes.
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Affiliation(s)
- Jing Ge
- School of Physics and Information Engineering, Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University Taiyuan 030031 China
| | - Xue-Dong Zhang
- School of Physics and Information Engineering, Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University Taiyuan 030031 China
| | - Zhi-Biao Li
- School of Physics and Information Engineering, Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University Taiyuan 030031 China
| | - Bing-Qian Xue
- School of Physics and Information Engineering, Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University Taiyuan 030031 China
| | - Xi-Lin Bai
- School of Physics and Information Engineering, Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University Taiyuan 030031 China
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2
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Hsu Y, Yang J. Twisted intramolecular
charge‐transfer
state of
trans
‐3‐(
N
,
N
‐Dimethylamino
)‐4'‐cyanostilbene: The C−C bond twisting. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202300078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Ying‐Feng Hsu
- Department of Chemistry National Taiwan University Taipei 10617 Taiwan
| | - Jye‐Shane Yang
- Department of Chemistry National Taiwan University Taipei 10617 Taiwan
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3
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Raman A, Neelambra AU, Karunakaran V, Easwaramoorthi S. Solvent-Controlled Photoswitching of Azobenzene: An Excited State Shuttle. Chem Asian J 2023; 18:e202201112. [PMID: 36546595 DOI: 10.1002/asia.202201112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
The light-controlled excited state trans-cis isomerization process is a key to the development of conversion of light energy to mechanical motion at the molecular level. Considerable efforts have been made in tuning the isomerization process with electron donor and acceptor substituents by altering the excited state reaction coordinate. Here, we report a two novel push-pull series of para-diethylamino (DEA) and diphenylamino (DPA) substituted (E)-4'-((4-(diethylamino)phenyl)diazenyl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine (1) and (E)-4'-((4-(diphenylamino)phenyl)diazenyl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine (2). Compounds 1 and 2 undergo both photochemical and photophysical excited state deactivation pathways which can be controlled by varying the solvent polarity. These structural motifs of 1 and 2 would undergo torsional motions upon excitation to exhibit either trans→cis photoisomerization or to form a twisted intramolecular charge transfer state and both the process originates from the same excited state and competes with each other. Thus, alternations in the surrounding environment such as solvent polarity, solution viscosity, and protonation were employed to understand the preferential excited state deactivation pathway and thereby these systems could be employed as a new class of azobenzene-based luminescent photochromic molecules. For instance, in nonpolar solvent, toluene photoisomerization is preferred over TICT, but polar solvent, ethanol preferentially stabilizes the TICT state by virtue of N-C rotation which renders the energy barrier unfavourable for photoisomerization. The photostationary state of 1 in toluene is predominantly the Z isomer, whereas in ethanol E isomer is nearly two-fold higher than the Z isomer. These feature sets up a new approach towards the construction of multinary molecular switches and subsequent development in diverse fields.
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Affiliation(s)
- Arunachalam Raman
- Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute Adyar, Chennai, 600 020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - Afeefah U Neelambra
- Photosciences & Photonics Section Chemical Sciences and Technology Division, CSIR - National Institute for Interdisciplinary Science and Technology, 695 019, Thiruvananthapuram, India
| | - Venugopal Karunakaran
- Photosciences & Photonics Section Chemical Sciences and Technology Division, CSIR - National Institute for Interdisciplinary Science and Technology, 695 019, Thiruvananthapuram, India
| | - Shanmugam Easwaramoorthi
- Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute Adyar, Chennai, 600 020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
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4
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Tu Y, Cao J, Zhang M, Liu M, Huang C, Li Y, Wang C. Dual Detection of Temperature And Chiral Amino Acid Using Triphenylamine‐Based Fluorescent Probes. ChemistrySelect 2022. [DOI: 10.1002/slct.202203323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yajing Tu
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
| | - Jian Cao
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
| | - Meijuan Zhang
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
| | - Mingming Liu
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
| | - Cuiping Huang
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
| | - Yanan Li
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
| | - Chuanxiao Wang
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 P. R. China
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5
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Kharitonov VB, Sergeeva ES, Kouame EK, Nelyubina YV, Ushakov IA, Loginov DA, Lvov AG. Redirecting of Charge Transfer Enables the Control of the Photoactivity of Terarylenes. Org Lett 2022; 24:7538-7543. [PMID: 36218225 DOI: 10.1021/acs.orglett.2c02825] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photoinduced charge transfer affects the efficiency and selectivity of photochemical reactions. Incorporation of donating groups into the isoquinolinium core allowed us to overcome the photochemical inactivity of the corresponding dithienyl-substituted terarylenes, presumably by redirecting the charge transfer within the molecule, and gave access to a new family of thermally reversible photoswitches.
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Affiliation(s)
- Vladimir B Kharitonov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russia
| | - Ekaterina S Sergeeva
- Irkutsk National Research Technical University, 83, Lermontov Street, Irkutsk 664074, Russia.,A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
| | - Eric Koffi Kouame
- Irkutsk National Research Technical University, 83, Lermontov Street, Irkutsk 664074, Russia.,A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russia
| | - Igor A Ushakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
| | - Dmitry A Loginov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russia.,Plekhanov Russian University of Economics, Stremyannyi Pereulok 36, Moscow 117997, Russia
| | - Andrey G Lvov
- Irkutsk National Research Technical University, 83, Lermontov Street, Irkutsk 664074, Russia.,A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
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6
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Stallhofer K, Nuber M, Schüppel F, Thumser S, Iglev H, de Vivie-Riedle R, Zinth W, Dube H. Electronic and Geometric Characterization of TICT Formation in Hemithioindigo Photoswitches by Picosecond Infrared Spectroscopy. J Phys Chem A 2021; 125:4390-4400. [PMID: 33989005 DOI: 10.1021/acs.jpca.1c02646] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Deciphering the exact electronic and geometric changes of photoexcited molecules is an important task not only to understand the fundamental atomistic mechanisms but also to rationally design molecular properties and functions. Here, we present a combined experimental and theoretical study of the twisted intramolecular charge transfer (TICT) process in hemithioindigo photoswitches. Using ultrafast transient IR spectroscopy as the main analytical method, a detailed understanding of the extent and direction of charge transfer within the excited molecule is obtained. At the same time, the geometrical distortion is monitored directly via changes of indicative vibrational modes over the time course of the photoreaction. These high-resolution data deliver a detailed molecular movie of the TICT process in this important class of chromophores with picosecond time resolution.
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Affiliation(s)
- Klara Stallhofer
- Physik-Department, Lehrstuhl für Laser- und Röntgenphysik, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Matthias Nuber
- Physik-Department, Lehrstuhl für Laser- und Röntgenphysik, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Franziska Schüppel
- Department für Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Stefan Thumser
- Department für Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Hristo Iglev
- Physik-Department, Lehrstuhl für Laser- und Röntgenphysik, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Regina de Vivie-Riedle
- Department für Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Wolfgang Zinth
- Lehrstuhl für Biomolekulare Optik, Ludwig-Maximilians-Universität München, Oettingenstr. 67, 80538 Munich, Germany
| | - Henry Dube
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus- Fiebiger-Str. 10, 91058 Erlangen, Germany
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7
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Hao T, Yang Y, Liang W, Fan C, Wang X, Wu W, Chen X, Fu H, Chen H, Yang C. Trace mild acid-catalysed Z → E isomerization of norbornene-fused stilbene derivatives: intelligent chiral molecular photoswitches with controllable self-recovery. Chem Sci 2020; 12:2614-2622. [PMID: 34164029 PMCID: PMC8179340 DOI: 10.1039/d0sc05213b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/28/2020] [Indexed: 12/14/2022] Open
Abstract
Stilbene derivatives have long been known to undergo "acid-catalyzed" Z → E isomerization, where a strong mineral acid at high concentration is practically necessary. Such severe reaction conditions often cause undesired by-reactions and limit their potential application. Herein, we present a trace mild acid-catalyzed Z → E isomerization found with stilbene derivatives fused with a norbornene moiety. By-reactions, such as the migration of the C[double bond, length as m-dash]C double bond and electrophilic addition reactions, were completely inhibited because of the ring strain caused by the fused norbornene component. Direct photolysis of the E isomers at selected wavelengths led to the E → Z photoisomerization of these stilbene derivatives and thus constituted a unique class of molecular switches orthogonally controllable by light and acid. The catalytic amount of acid could be readily removed, and the Z → E isomerization could be controlled by turning on/off the irradiation of a photoacid, which allowed repeated isomerization in a non-invasive manner. Moreover, the Z isomer produced by photoisomerization could spontaneously self-recover to the E isomer in the presence of a catalytic amount of acid. The kinetics of Z → E isomerization were adjustable by manipulating catalytic factors and, therefore, unprecedented molecular photoswitches with adjustable self-recovery were realized.
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Affiliation(s)
- Taotao Hao
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Yongsheng Yang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Wenting Liang
- Institute of Environmental Science, Department of Chemistry, Shanxi University Taiyuan 030006 China
| | - Chunying Fan
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Xin Wang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Wanhua Wu
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Cheng Yang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
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8
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Maeda H, Horikoshi R, Yamaji M, Furuyama T, Segi M. Photophysical Properties of Silyl‐Substituted Stilbene Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Hajime Maeda
- Division of Material Chemistry Graduate School of Natural Science and Technology Kanazawa University Kakuma‐machi 920‐1192 Kanazawa Ishikawa Japan
| | - Ryo Horikoshi
- Division of Material Chemistry Graduate School of Natural Science and Technology Kanazawa University Kakuma‐machi 920‐1192 Kanazawa Ishikawa Japan
| | - Minoru Yamaji
- Division of Molecular Science Graduate School of Science and Engineering Gunma University 373‐0057 Ota Gunma Japan
| | - Taniyuki Furuyama
- Division of Material Chemistry Graduate School of Natural Science and Technology Kanazawa University Kakuma‐machi 920‐1192 Kanazawa Ishikawa Japan
- Japan Science and Technology Agency (JST)‐PRESTO 4‐1–8 Honcho, Kawaguchi, Saitama 332‐0012 Kawaguchi Saitama Japan
| | - Masahito Segi
- Division of Material Chemistry Graduate School of Natural Science and Technology Kanazawa University Kakuma‐machi 920‐1192 Kanazawa Ishikawa Japan
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9
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He Z, Xue R, Lei Y, Yu L, Zhu C. Photorelaxation Pathways of 4-( N, N-Dimethylamino)-4'-nitrostilbene Upon S 1 Excitation Revealed by Conical Intersection and Intersystem Crossing Networks. Molecules 2020; 25:molecules25092230. [PMID: 32397393 PMCID: PMC7248955 DOI: 10.3390/molecules25092230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/07/2020] [Accepted: 05/08/2020] [Indexed: 11/16/2022] Open
Abstract
Multi-state n-electron valence state second order perturbation theory (MS-NEVPT2) was utilized to reveal the photorelaxation pathways of 4-(N,N-dimethylamino)-4′-nitrostilbene (DANS) upon S1 excitation. Within the interwoven networks of five S1/S0 and three T2/T1 conical intersections (CIs), and three S1/T2, one S1/T1 and one S0/T1 intersystem crossings (ISCs), those competing nonadiabatic decay pathways play different roles in trans-to-cis and cis-to-trans processes, respectively. After being excited to the Franck–Condon (FC) region of the S1 state, trans-S1-FC firstly encounters an ultrafast conversion to quinoid form. Subsequently, the relaxation mainly proceeds along the triplet pathway, trans-S1-FC → ISC-S1/T2-trans → CI-T2/T1-trans → ISC-S0/T1-twist → trans- or cis-S0. The singlet relaxation pathway mediated by CI-S1/S0-twist-c is hindered by the prominent energy barrier on S1 surface and by the reason that CI-S1/S0-trans and CI-S1/S0-twist-t are both not energetically accessible upon S1 excitation. On the other hand, the cis-S1-FC lies at the top of steeply decreasing potential energy surfaces (PESs) towards the CI-S1/S0-twist-c and CI-S1/S0-DHP regions; therefore, the initial twisting directions of DN and DAP moieties determine the branching ratio between αC=C twisting (cis-S1-FC → CI-S1/S0-twist-c → trans- or cis-S0) and DHP formation relaxation pathways (cis-S1-FC → CI-S1/S0-DHP → DHP-S0) on the S1 surface. Moreover, the DHP formation could also take place via the triplet relaxation pathway, cis-S1-FC → ISC-S1/T1-cis → DHP-T1 → DHP-S0, however, which may be hindered by insufficient spin-orbit coupling (SOC) strength. The other triplet pathways for cis-S1-FC mediated by ISC-S1/T2-cis are negligible due to the energy or geometry incompatibility of possible consecutive stepwise S1 → T2 → T1 or S1 → T2 → S1 processes. The present study reveals photoisomerization dynamic pathways via conical intersection and intersystem crossing networks and provides nice physical insight into experimental investigation of DANS.
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Affiliation(s)
- Ziyue He
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Shaanxi key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, Shaanxi 710127, China; (Z.H.); (R.X.)
| | - Ruidi Xue
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Shaanxi key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, Shaanxi 710127, China; (Z.H.); (R.X.)
| | - Yibo Lei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Shaanxi key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, Shaanxi 710127, China; (Z.H.); (R.X.)
- Correspondence: (Y.L.); (L.Y.); (C.Z.)
| | - Le Yu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Shaanxi key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, Shaanxi 710127, China; (Z.H.); (R.X.)
- Correspondence: (Y.L.); (L.Y.); (C.Z.)
| | - Chaoyuan Zhu
- Institute of Molecular Science and Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
- Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan
- Correspondence: (Y.L.); (L.Y.); (C.Z.)
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10
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Ding Z, Zhang Y, Gao Y, Yang B, Jiang S. Tunable morphologies and emission of photosensitive supramolecular self-assemblies through positional and trans-cis isomerization. NANOSCALE 2020; 12:2071-2080. [PMID: 31912841 DOI: 10.1039/c9nr09155f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cyanostilbene units are widely attractive as photoresponsive supramolecular building blocks whose structures and emission can be modulated by trans-cis isomerization. Generally, the change of properties is related to the molecular structure of cyanostilbene, which is still unpredictable and needs to be explored. Herein, two benzene-1,3,5-tricarboxamide (BTA) based cyanostilbene derivatives with different cyano positions have been designed to investigate the emission as well as structural changes during the trans-cis photoisomerization process in monomer and aggregation states, respectively. In the monomer state, the derivative with cyano groups at the outer position, β-BTTPA, exhibits obvious emission enhancement upon UV irradiation, while the other derivative (α-BTTPA) shows emission quenching. In addition, upon the formation of aggregates, β-BTTPA forms nano-level fibers with blue-green emission, but α-BTTPA forms micron-level flat ribbons with blue emission. More importantly, also driven by the trans-cis photoisomerization, the self-assemblies show morphological transitions (ribbons/fibers to spheres) due to the fact that the equilibrium of the system is broken by the photoreactions. Such changes further contribute to emission switching as well as enhanced hydrophobic properties.
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Affiliation(s)
- Zeyang Ding
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China.
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11
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Holzmann N, Bernasconi L, Bisby RH, Parker AW. Influence of charge transfer on the isomerisation of stilbene derivatives for application in cancer therapy. Phys Chem Chem Phys 2018; 20:27778-27790. [PMID: 30378611 DOI: 10.1039/c8cp05375h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photoisomerisation of non-toxic trans-combretastatin CA4 to its cytotoxic cis isomer demonstrates the high potential of this and similar compounds for localised cancer therapy. The introduction of intramolecular charge-transfer character by altering the substituents of combretastatin systems opens up possibilities to tailor these stilbene derivatives to the special demands of anticancer drugs. In this TDDFT study we explore how absorption wavelengths for both the trans and cis isomers can be red shifted to enable deeper light penetration into tissue and how the trans → cis and cis → trans isomerisations are affected by charge transfer effects to different degrees.
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Affiliation(s)
- Nicole Holzmann
- STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, UK.
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12
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Borg RE, Hatamimoslehabadi M, Bellinger S, La J, Mithila F, Yelleswarapu C, Rochford J. Photophysical and Photoacoustic Properties of π-Extended Curcumin Dyes. Effects of the Terminal Dimethylamino Electron-donor and the Bridging Aryl Ring. Photochem Photobiol 2018; 95:280-292. [PMID: 29989174 DOI: 10.1111/php.12980] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/02/2018] [Indexed: 01/07/2023]
Abstract
The synthesis, photophysical and photoacoustic characterization for a series of nine π-extended quadrupolar curcumin dyes is presented. A systematic evaluation of the π-bridging unit including the p-phenyl, naphth-4-yl, thien-2-yl and hybrid 4-naphthathien-2-yl groups is presented. Furthermore, evaluation of the strongly donating donor-π-acceptor-π-donor quadrupolar dimethylamino terminated derivatives is also included. Select dyes exhibit excited state absorption at increased laser fluence which translates to the production of a nonlinear enhanced photoacoustic response. In particular, the bis-4-dimethylaminonaphtha-2-thien-5-yl curcuminBF2 contrast agent DMA-5 exhibits an excellent molar photoacoustics (PA) emission at both low (9.4 × 103 V M-1 ) and high (1.47 × 105 V M-1 ) laser fluence which is confirmed by its strong contrast by photoacoustic tomography (PAT). In summary, the strong absorbance and enhanced photoacoustic properties of naphthyl and thienyl curcuminoids here presented provides great promise for future photoacoustic imaging applications as demonstrated by preliminary PAT studies.
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Affiliation(s)
- Raymond E Borg
- Department of Chemistry, University of Massachusetts Boston, Boston, MA
| | | | | | - Jeffrey La
- Department of Physics, University of Massachusetts Boston, Boston, MA
| | - Farha Mithila
- Department of Chemistry, University of Massachusetts Boston, Boston, MA
| | | | - Jonathan Rochford
- Department of Chemistry, University of Massachusetts Boston, Boston, MA
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13
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Yao HH, Cheng HH, Cheng CH, Lin CK, Yang JS, Chen IC. Charge-transfer and isomerization reactions of trans-4-(N-arylamino)stilbenes. Phys Chem Chem Phys 2018; 18:28164-28174. [PMID: 27711586 DOI: 10.1039/c6cp05514a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We studied the excited-state dynamics of trans-4-(N-arylamino)stilbenes with aryl = phenyl (p1H), 4-methoxyphenyl (p1OM), or 4-cyanophenyl (p1CN) in solvents of varied polarity and viscosity by using femtosecond transient absorption and time-correlated single photon counting techniques. In nonpolar solvents the decay is triexponential, in which the rapid component corresponds to vibrational cooling combined with solvation, the intermediate temporal component 41-120 ps to trans-cis isomerization, and the long one ∼1 ns to fluorescence decay of the S1 state. The S1 state has a delocalized geometry and charge-transfer characteristics, corresponding to a planar intramolecular charge transfer (PICT) state. In polar solvents, an excited-state absorption band appears near 520 and 480 nm for p1OM and p1CN, respectively but not for p1H. This band has a rise lifetime of 4.3/7.5, 16.3/9.4, and 29.5/16 ps for p1CN/p1OM in acetonitrile (ACN), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO), respectively and matches the decay of the 600 nm PICT band. This band is thus assigned to the absorption of a singlet twisted intramolecular charge transfer state (TICT). The conversion rate decreases as the solvent viscosity is increased and is consistent with a large structural variation amplitude. Theoretical calculations using density functional theory (DFT), method PEB0, were employed to obtain the optimized structures and energies of those states. The PICT state possesses delocalized π electrons along the molecule. The TICT for p1CN is formed by twisting about the aminostilbene-benzonitrile C-N bond by ∼90°, but it is about the stilbene-aniline C-N bond for p1OM. We observed faster conversion rates for p1CN in alcoholic solvents, in which the lifetimes for both the PICT and TICT states are shortened to 20-99 ps and 120-660 ps, respectively, as a result of solvent-solute H-bonding interactions. In p1OM, the TICT state has an elongated C[double bond, length as m-dash]C bond in the stilbene moiety, which might facilitate the trans-cis isomerization reaction and thus account for the relatively short lifetime of 58-420 ps in polar solvents.
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Affiliation(s)
- Hsuan-Hsiao Yao
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
| | - Hsu-Hsiang Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
| | - Chao-Han Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
| | - Cheng-Kai Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, Republic of China.
| | - Jye-Shane Yang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, Republic of China.
| | - I-Chia Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
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14
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pH-Switched fluorescent pseudo rotaxane assembly of cucurbit[7]uril with bispyridinium ethylene derivatives. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.08.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Ghosh R. Substituent control of the ultrafast twisted intramolecular charge transfer rate in dimethylaminochalcone derivatives. Phys Chem Chem Phys 2018; 20:6347-6353. [DOI: 10.1039/c7cp08239h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The rate of TICT relaxation in dimethylaminochalcone derivatives is shown to be controlled by acceptor strength. Variation in the charge pulling capacity of the acceptor modifies the torsional barrier along the TICT coordinate in the S1 state, resulting in a tunable TICT relaxation rate.
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Affiliation(s)
- Rajib Ghosh
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
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16
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Maeda H, Sakurai H, Segi M. Intramolecular Photoreactions of 9-Cyanophenanthrene-Linked Arylcyclopropanes. ACS OMEGA 2017; 2:8697-8708. [PMID: 31457401 PMCID: PMC6645483 DOI: 10.1021/acsomega.7b01439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 11/23/2017] [Indexed: 06/10/2023]
Abstract
With the aim of developing efficient and useful processes for the preparation of polycyclic organic compounds, intramolecular [3 + 2] photoreactions of 9-cyanophenanthrene-linked arylcyclopropanes were investigated. Photoreactions of 6a,b, which contain respective p-methoxyphenylcyclopropane and phenylcyclopropane moieties, form the intramolecular [3 + 2] photocycloadducts, endo- and exo-7a,b, along with the dihydroisochroman derivatives, cis- and trans-8a,b. The efficiency of the photoreaction of 6a is higher when benzene rather than acetonitrile is used as a solvent. Interestingly, this solvent effect is reversed in the photoreaction of 6b, where the efficiency is higher in acetonitrile than that in benzene. On the basis of the observed effects of substituents and solvents, fluorescence emission from intramolecular exciplexes, and ΔGs for intramolecular single electron transfer (SET), we propose that the photoreactions proceed through pathways involving the initial formation of singlet intramolecular exciplexes and/or SET between the excited 9-cyanophenanthrene and the ground-state arylcyclopropane moieties.
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17
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Matwijczuk A, Górecki A, Makowski M, Pustuła K, Skrzypek A, Waś J, Niewiadomy A, Gagoś M. Spectroscopic and Theoretical Studies of Fluorescence Effects in 2-Methylamino-5-(2,4-dihydroxyphenyl)-1,3,4-thiadiazole Induced by Molecular Aggregation. J Fluoresc 2017; 28:65-77. [PMID: 28889356 PMCID: PMC5799588 DOI: 10.1007/s10895-017-2175-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 08/30/2017] [Indexed: 01/12/2023]
Abstract
The article presents the results of fluorescence analyses of 2-methylamino-5-(2,4-dihydroxyphenyl)-1,3,4-thiadiazole (MDFT) in an aqueous environment. MDFT dissolved in aqueous solutions with a pH value in the range from 1 to 4.5 yielded an interesting effect of two clearly separated fluorescence emissions. In turn, a single fluorescence was observed in MDFT dissolved in water solutions with a pH value from 4.5 to 12. As it was suggested in the previous investigations of other 1,3,4-thiadiazole compounds, these effects may be associated with conformational changes in the structure of the analysed molecule accompanied by aggregation effects. Crystallographic data showed that the effect of the two separated fluorescence emissions occurred in a conformation with the –OH group in the resorcyl ring bound on the side of the sulphur atom from the 1,3,4-thiadiazole ring. The hypothesis of aggregation as the mechanism involved in the change in the spectral properties at low pH is supported by the results of (Time-Dependent) Density Functional Theory calculations. The possibility of rapid analysis of conformational changes with the fluorescence spectroscopy technique may be rather important outcome obtained from the spectroscopic studies presented in this article. Additionally, the presented results seem to be highly important as they can be easily observed in solutions and biologically important samples.
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Affiliation(s)
- Arkadiusz Matwijczuk
- Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland.
| | - Andrzej Górecki
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Marcin Makowski
- Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060, Kraków, Poland
| | - Katarzyna Pustuła
- Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060, Kraków, Poland
| | - Alicja Skrzypek
- Department of Chemistry, University of Life Sciences in Lublin, Akademicka 15, 20-950, Lublin, Poland
| | - Joanna Waś
- Departament of Chemistry, Jagiellonian University, Ingardena 3, 30-060, Kraków, Poland
| | - Andrzej Niewiadomy
- Department of Chemistry, University of Life Sciences in Lublin, Akademicka 15, 20-950, Lublin, Poland.,Institute of Industrial Organic Chemistry, Annopol 6, 03-236, Warsaw, Poland
| | - Mariusz Gagoś
- Department of Cell Biology, Institute of Biology, Maria Curie-Skłodowska University, Akademicka 19, 20-033, Lublin, Poland.
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18
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Tsai MS, Ou CL, Tsai CJ, Huang YC, Cheng YC, Sun SS, Yang JS. Fluorescence Enhancement of Unconstrained GFP Chromophore Analogues Based on the Push–Pull Substituent Effect. J Org Chem 2017; 82:8031-8039. [DOI: 10.1021/acs.joc.7b01260] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Meng-Shiue Tsai
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Institute
of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Chun-Lin Ou
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Chi-Jui Tsai
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yen-Chin Huang
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yuan-Chung Cheng
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Shih-Sheng Sun
- Institute
of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Jye-Shane Yang
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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19
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Photoprocesses in N-ammonioalkyl derivatives of azacrown-containing styryl dyes and their complexes with metal perchlorates. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1698-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Substituent Dependence Charge Transfer and Photochemical Properties of Donor-Acceptor Substituted Ethenyl Thiophenes. J Fluoresc 2017; 27:1729-1738. [PMID: 28477137 DOI: 10.1007/s10895-017-2111-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
Abstract
Donor-acceptor conjugated molecules with efficient light induced properties represent interesting material for electronic device application. In this context, we have calculated excited state dipole moment of three ethenyl thiophenes (1-3) bearing varied electron donor-acceptor substituent in p-phenyl unit using Lippert-Mataga, Bakhshiev and Kawski method. It is found that 1 with strong electron-withdrawing nitro substituent, is exhibiting charge transfer and highly dipolar excited state as compared to 2 and 3. Photochemical studies of 1-3, indicate towards the charge transfer dependence trans-cis photoisomerization under direct irradiation condition. Compound 1 exhibits charge transfer and less efficient towards photoisomerization, whereas 2 and 3 undergo efficient photoisomerization. Graphical Abstract Substituent dependence charge transfer and photochemical properties of donor-acceptor substituted ethenyl thiophenes.
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21
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Wiedbrauk S, Maerz B, Samoylova E, Mayer P, Zinth W, Dube H. Ingredients to TICT Formation in Donor Substituted Hemithioindigo. J Phys Chem Lett 2017; 8:1585-1592. [PMID: 28304176 DOI: 10.1021/acs.jpclett.7b00371] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Twisted intramolecular charge transfer (TICT) formation in hemithioindigo photoswitches has recently been reported and constitutes a second deexcitation pathway complementary to photoisomerization. Typically, this behavior is not found for this type of photoswitches, and it takes special geometric and electronic conditions to realize it. Here we present a systematic study that identifies the molecular preconditions leading to TICT formation in donor substituted hemithioindigo, which can thus serve as a frame of reference for other photoswitching systems. By varying the substitution pattern and providing an in-depth physical characterization including time-resolved and quantum yield measurements, we found that neither ground-state pretwisting along the rotatable single bond nor the introduction of strong push-pull character across the photoisomerizable double bond alone leads to formation of TICT states. Only the combination of both ingredients produces light-induced TICT behavior in polar solvents.
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Affiliation(s)
- Sandra Wiedbrauk
- Department für Chemie and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-81377 Munich, Germany
| | - Benjamin Maerz
- Institut für BioMolekulare Optik, Fakultät für Physik and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-80538 Munich, Germany
| | - Elena Samoylova
- Institut für BioMolekulare Optik, Fakultät für Physik and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-80538 Munich, Germany
| | - Peter Mayer
- Department für Chemie and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-81377 Munich, Germany
| | - Wolfgang Zinth
- Institut für BioMolekulare Optik, Fakultät für Physik and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-80538 Munich, Germany
| | - Henry Dube
- Department für Chemie and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-81377 Munich, Germany
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22
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Deshpande SS, Kumbhar HS, Shankarling GS. Solvatochromic fluorescence properties of phenothiazine-based dyes involving thiazolo[4,5-b]quinoxaline and benzo[e]indole as strong acceptors. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:154-163. [PMID: 27889675 DOI: 10.1016/j.saa.2016.10.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 10/15/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
The present work describes the photophysical properties of two newly synthesized compounds, namely (E)-10-butyl-3-(2-(thiazolo[4,5-b]quinoxalin-2-yl)vinyl)-10H-phenothiazine (PTQ) and (E)-10-butyl-3-(2-(1,1-dimethyl-1H-benzo[e]indol-2-yl)vinyl)-10H-phenothiazine (PBI). A strong intramolecular charge transfer (ICT) is observed in both dyes as indicated from absorption and emission studies on varying the solvent polarity. This can be concluded from the large Stokes shifts among these dyes as PTQ exhibits large Stokes shift with >270nm and PBI around 200nm. The effect of increasing polarity caused drastic increase in the charge transfer process leading to twisted intramolecular charge transfer (TICT) process in both the dyes PTQ and PBI. Time-resolved emission studies and non-radiative decay rate constant indicates that the excited states of both dyes behave differently with respect to solvent polarity. The non-radiative decay constant increases dramatically with the solvent polarity specifying change of ICT emissive states in non-polar solvent while TICT emitting states in highly polar solvent. On the other hand, PBI follows a general trend initially exhibiting higher non-radiative decay constant in non-polar solvent like cyclohexane, lowest in moderate polarity owing to the ICT emissive state but with increase in the polarity, the non-radiative decay constant again increases indicating TICT states.
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Affiliation(s)
- Saurabh S Deshpande
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 19, India
| | - Haribhau S Kumbhar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 19, India
| | - Ganapati S Shankarling
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 19, India.
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23
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Hariharan PS, Mothi EM, Moon D, Anthony SP. Halochromic Isoquinoline with Mechanochromic Triphenylamine: Smart Fluorescent Material for Rewritable and Self-Erasable Fluorescent Platform. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33034-33042. [PMID: 27934127 DOI: 10.1021/acsami.6b11939] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Halochromic isoquinoline attached mechanochromic triphenylamine, N-phenyl-N-(4-(quinolin-2-yl)phenyl)benzenamine (PQPBA) and tris(4-(quinolin-2-yl)phenyl)amine (TQPA), smart fluorescent materials exhibit thermo/mechanochromism and tunable solid state fluorescence and their unusual halochromic response in PMMA matrix have been used for fabricating rewritable and self-erasable fluorescent platforms. PQPBA and TQPA showed strong fluorescence in solution (Φf = 0.9290 (PQPBA) and 0.9160 (TQPA)) and moderate solid state fluorescence (Φf = 20 (PQPBA) and 17% (TQPA). Interestingly, they exhibited a rare temperature (0-100 °C) dependent positive fluorescence enhancement via activating radiative vibrational transition. The deaggregation of PQPBA and TQPA in PMMA polymer matrix lead to the enhancement of fluorescence intensity strongly and fabricated strong blue fluorescent thin films (Φf = 58% (PQPBA) and 54% (TQPA). The halochromic isoquinoline has been exploited for demonstrating reversible off-on fluorescence switching by acid (TFA (trifluoroacetic acid)/HCl) and base (NH3) treatment in both solids as well as PMMA thin films. Importantly, rewritable and self-erasable fluorescent platform has been achieved by make use of unusual fluorescence responses of PQPBA/TQPA with TFA/HCl after exposing NH3. Single crystal and powder X-ray diffraction (PXRD) studies provided the insight on the solid-state fluorescence and external stimuli-induced fluorescence changes.
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Affiliation(s)
| | - Ebrahim M Mothi
- Centre for Scientific and Applied Research, PSN College of Engineering & Technology ,Tirunelveli 627152, TamilNadu, India
| | - Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory , 80 Jigokro-127beongil, Nam-gu, Pohang, Gyeongbuk, Korea
| | - Savarimuthu Philip Anthony
- Department of Chemistry, School of Chemical & Biotechnology, SASTRA University , Thanjavur 613401, Tamil Nadu, India
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24
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Matwijczuk A, Kluczyk D, Górecki A, Niewiadomy A, Gagoś M. Solvent Effects on Molecular Aggregation in 4-(5-Heptyl-1,3,4-thiadiazol-2-yl)benzene-1,3-diol and 4-(5-Methyl-1,3,4-thiadiazol-2-yl)benzene-1,3-diol. J Phys Chem B 2016; 120:7958-69. [DOI: 10.1021/acs.jpcb.6b06323] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arkadiusz Matwijczuk
- Department
of Biophysics, University of Life Sciences in Lublin, Akademicka
13, 20-950 Lublin, Poland
| | - Dariusz Kluczyk
- Department
of Cell Biology, Institute of Biology, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
| | - Andrzej Górecki
- Department
of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology of the Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Andrzej Niewiadomy
- Department
of Chemistry, University of Life Sciences in Lublin, 20-950 Lublin, Poland
- Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland
| | - Mariusz Gagoś
- Department
of Cell Biology, Institute of Biology, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
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25
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Wu Z, Huang X. A Comparative Study on the Luminescence of the Cd2+and Mn2+Coordination Polymers Based on the Same Mixed Ligands. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Gromov SP, Vedernikov AI, Sazonov SK, Kuz’mina LG, Lobova NA, Strelenko YA, Howard JAK. Synthesis, structure, and stereospecific cross-[2+2] photocycloaddition of pseudodimeric complexes based on ammonioalkyl derivatives of styryl dyes. NEW J CHEM 2016. [DOI: 10.1039/c5nj03500g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two different styryl dyes form pseudodimeric complexes via hydrogen bonding and stacking interactions; irradiation of these complexes gives rctt-cyclobutane derivatives.
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Affiliation(s)
- Sergey P. Gromov
- Photochemistry Center
- Russian Academy of Sciences
- Moscow 119421
- Russian Federation
- Department of Chemistry
| | - Artem I. Vedernikov
- Photochemistry Center
- Russian Academy of Sciences
- Moscow 119421
- Russian Federation
| | - Sergey K. Sazonov
- Photochemistry Center
- Russian Academy of Sciences
- Moscow 119421
- Russian Federation
| | - Lyudmila G. Kuz’mina
- N. S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- Moscow 119991
- Russian Federation
| | - Natalia A. Lobova
- Photochemistry Center
- Russian Academy of Sciences
- Moscow 119421
- Russian Federation
| | - Yuri A. Strelenko
- N. D. Zelinskiy Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow 119991
- Russian Federation
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27
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28
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Matwijczuk A, Kamiński D, Górecki A, Ludwiczuk A, Niewiadomy A, Maćkowski S, Gagoś M. Spectroscopic Studies of Dual Fluorescence in 2-((4-Fluorophenyl)amino)-5-(2,4-dihydroxybenzeno)-1,3,4-thiadiazole. J Phys Chem A 2015; 119:10791-805. [DOI: 10.1021/acs.jpca.5b06475] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Andrzej Górecki
- Department of Physical
Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology of the Jagiellonian University, 31-007 Kraków, Poland
| | - Agnieszka Ludwiczuk
- Chair and Department of Pharmacognosy with Medicinal
Plant Unit, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland
| | | | - Sebastian Maćkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, 87-100 Toruń, Poland
| | - Mariusz Gagoś
- Department of Cell Biology, Institute of Biology, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
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29
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Agnihotri H, Paramasivam M, Palakollu V, Kanvah S. Photoisomerization ofTrans Ortho-,Meta-,Para-Nitro Diarylbutadienes: A Case of Regioselectivity. Photochem Photobiol 2015; 91:1324-31. [DOI: 10.1111/php.12504] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 07/12/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Harsha Agnihotri
- Department of Chemistry; Indian Institute of Technology Gandhinagar; Ahmedabad India
| | | | | | - Sriram Kanvah
- Department of Chemistry; Indian Institute of Technology Gandhinagar; Ahmedabad India
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30
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Mishra A, Sahu S, Tripathi S, Krishnamoorthy G. Photoinduced intramolecular charge transfer in trans-2-[4'-(N,N-dimethylamino)styryl]imidazo[4,5-b]pyridine: effect of introducing a C[double bond, length as m-dash]C double bond. Photochem Photobiol Sci 2015; 13:1476-86. [PMID: 25103414 DOI: 10.1039/c4pp00237g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The spectral characteristics of trans-2-[4'-(N,N-dimethylamino)styryl]imidazo[4,5-b]pyridine (t-DMASIP-b) have been investigated using absorption and fluorescence techniques, and compared with 2-(4'-N,N-dimethylamino)imidazo[4,5-b]pyridine (DMAPIP-b). The study reveals that introduction of a C[double bond, length as m-dash]C double bond strongly perturbs the photophysics of the system. Unlike DMAPIP-b, t-DMASIP-b emits a single emission in aprotic and protic solvents. The emission occurs from the locally excited state in nonpolar solvents and from a planar intramolecular charge transfer (PICT) state in polar solvents. Multiple linear regression analysis suggests that among the different solvent parameters, the dipolar interaction contributes more to the stabilization of the system in both the ground and excited states. Theoretical calculations suggest that, unlike in DMAPIP-b, proton coupled twisted intramolecular charge transfer (TICT) emission does not occur in t-DMASIP-b. The higher quantum yield obtained in the viscous solvent glycerol is attributed to the restriction of the twisting of the olefinic bond. The photoirradiation of t-DMASIP-b shows that isomerization takes place in all solvents, including viscous glycerol. The theoretically simulated potential energy surface shows that isomerization occurs via a phantom state, which is a nonradiative process. The rise in temperature favors the photoisomerization, thus, the fluorescence quantum yield decreases. The prototropic study indicates that, unlike in DMAPIP-b, the protonation takes place at different places to form the monocations.
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Affiliation(s)
- Anasuya Mishra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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31
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Chen J, Wu Y, Wang X, Yu Z, Tian H, Yao J, Fu H. A soluble cryogenic thermometer with high sensitivity based on excited-state configuration transformations. Phys Chem Chem Phys 2015; 17:27658-64. [DOI: 10.1039/c5cp04400f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism for the dual emission of FIPAC was investigated in detail and the dual emission character of the FIPAC solution system was further applied as a cryogenic thermometer.
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Affiliation(s)
- Jianwei Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
- China
| | - Yishi Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
- China
| | - Xuedong Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
- China
| | - Zhenyi Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
- China
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science & Technology
- Shanghai
- China
| | - Jiannian Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
- China
| | - Hongbing Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
- China
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Agnihotri H, Palakollu V, Kanvah S. Selective photoisomerization of methyl substituted nitro diphenylbutadienes. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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33
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Donor-Acceptor Conjugated Linear Polyenes: A Study of Excited State Intramolecular Charge Transfer, Photoisomerization and Fluorescence Probe Properties. J Fluoresc 2014; 28:21-28. [DOI: 10.1007/s10895-014-1430-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 07/14/2014] [Indexed: 01/05/2023]
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Achelle S, Malval J, Aloïse S, Barsella A, Spangenberg A, Mager L, Akdas‐Kilig H, Fillaut J, Caro B, Robin‐le Guen F. Synthesis, Photophysics and Nonlinear Optical Properties of Stilbenoid Pyrimidine‐Based Dyes Bearing Methylenepyran Donor Groups. Chemphyschem 2013; 14:2725-36. [DOI: 10.1002/cphc.201300419] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Sylvain Achelle
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, IUT de Lannion rue Edouard Branly, BP 30219, 22302 Lannion Cedex (France)
| | - Jean‐Pierre Malval
- Institut de Science des Matériaux de Mulhouse, UMR CNRS 7361, Université de Haute‐Alsace, 15 rue Jean Starcky ,68057 Mulhouse (France)
| | - Stéphane Aloïse
- Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS 8516, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex (France)
| | - Alberto Barsella
- Département d'Optique ultra‐rapide et Nanophotonique, IPCMS‐CNRS 23 Rue du Loess, BP 43, 67034 Strasbourg Cedex 2 (France)
| | - Arnaud Spangenberg
- Institut de Science des Matériaux de Mulhouse, UMR CNRS 7361, Université de Haute‐Alsace, 15 rue Jean Starcky ,68057 Mulhouse (France)
| | - Loic Mager
- Département d'Optique ultra‐rapide et Nanophotonique, IPCMS‐CNRS 23 Rue du Loess, BP 43, 67034 Strasbourg Cedex 2 (France)
| | - Huriye Akdas‐Kilig
- Institut des Sciences Chimiques de Rennes UMR CNRS 6226, Campus de Beaulieu, 263 av. du Général Leclerc, 35042 Rennes (France)
| | - Jean‐Luc Fillaut
- Institut des Sciences Chimiques de Rennes UMR CNRS 6226, Campus de Beaulieu, 263 av. du Général Leclerc, 35042 Rennes (France)
| | - Bertrand Caro
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, IUT de Lannion rue Edouard Branly, BP 30219, 22302 Lannion Cedex (France)
| | - Françoise Robin‐le Guen
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, IUT de Lannion rue Edouard Branly, BP 30219, 22302 Lannion Cedex (France)
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Mishra A, Chaterjee S, Krishnamoorthy G. Intramolecular charge transfer emission of trans-2-[4′-(dimethylamino)styryl]benzimidazole: Effect of solvent and pH. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.03.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Lin CK, Wang YF, Cheng YC, Yang JS. Multisite constrained model of trans-4-(N,N-dimethylamino)-4'-nitrostilbene for structural elucidation of radiative and nonradiative excited states. J Phys Chem A 2013; 117:3158-64. [PMID: 23514591 DOI: 10.1021/jp310770s] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A constrained model compound of trans-4-(N,N-dimethylamino)-4'-nitrostilbene (DNS), namely, compound DNS-B3 that is limited to torsions about the phenyl-nitro C-N bond and the central C═C bond, was prepared to investigate the structural nature of the radiative and nonradiative states of electronically excited DNS. The great similarities in solvent-dependent electronic spectra, fluorescence decay times, and quantum yields for fluorescence (Φf) and trans → cis photoisomerization (Φtc) between DNS and DNS-B3 indicate that the fluorescence is from a planar charge-transfer state and torsion of the nitro group is sufficient to account for the nonradiative decay of DNS. This conclusion is supported by TDDFT calculations on DNS-B3 in dichloromethane. The structure at the conical intersection for internal conversion is associated with not only a twisting but also a pyramidalization of the nitro group. The mechanism of the NO2 torsion is discussed in terms of the effects of solvent polarity, the substituents, and the volume demand. The differences and analogies of the NO2- vs amino-twisted intramolecular charge-transfer (TICT) state of trans-aminostilbenes are also discussed.
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Affiliation(s)
- Cheng-Kai Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617
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37
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Cheng CW, Huang GJ, Hsu HY, Prabhakar C, Lee YP, Diau EWG, Yang JS. Effects of hydrogen bonding on internal conversion of GFP-like chromophores. II. The meta-amino systems. J Phys Chem B 2013; 117:2705-16. [PMID: 23402432 DOI: 10.1021/jp3093397] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To rationalize the efficient quenching of the fluorescence and the Z → E photoisomerization of m-ABDI, the meta-amino analogue of the green fluorescent protein (GFP) chromophore, in protic solvents, the femtosecond time-resolved fluorescence and transient infrared (TRIR) spectra of m-ABDI in CD3CN, CH3OH, and CD3OD are determined. For solutions in CD3CN, the fluorescence decay lifetime is ∼7.9 ns and IR absorption lines near 1513, 1531, 1557, and 1613 cm(-1) of m-ABDI in its electronically excited state were observed with a decay time >5 ns. For solutions in CH3OH, the fluorescence decay is double exponential with time constants of ∼16 and 62 ps. In addition to IR absorption lines of m-ABDI in its electronically excited state with a decay time of ∼16 ps, new features near 1513, 1532, 1554, and 1592 cm(-1) were observed to have a rise time of ∼19 ps and a decay constant of ∼58 ps, indicating formation of an intermediate. The assignments for the IR spectra of the ground and excited states were assisted with DFT and TDDFT calculations, respectively. We conclude that the torsion of the exocyclic C═C bond (the τ torsion) is responsible for the nonradiative decay of electronically excited m-ABDI in CD3CN. However, in CH3OH and CD3OD, the solute-solvent hydrogen bonding (SSHB) interactions diminish significantly the barrier of the τ torsion and induce a new pathway that competes successfully with the τ torsion, consistent with the efficient fluorescence quenching and the diminished yield for Z → E photoisomerization. The new pathway is likely associated with excited-state proton transfer (ESPT) from the solvent to m-ABDI, particularly the carbonyl group, and generates an intermediate (ESPT*) that is weakly fluorescent.
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Affiliation(s)
- Chi-Wen Cheng
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
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Atabekyan LS, Vedernikov AI, Avakyan VG, Lobova NA, Gromov SP, Chibisov AK. Photoprocesses in styryl dyes and their pseudorotaxane complexes with cucurbit[7]uril. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2012.12.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Szemik-Hojniak A, Deperasińska I, Oberda K, Erez Y, Huppert D, Nizhnik YP. Ultrafast excited state dynamics of trans-[4-(4′-dimethylaminostyryl)] pyridine N-oxide in solution: femtosecond fluorescence up-conversion and theoretical calculations. Phys Chem Chem Phys 2013; 15:9914-23. [DOI: 10.1039/c3cp50527h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Atabekyan LS, Lobova NA, Vedernikov AN, Gromov SP, Chibisov AK. Photonics of azacrown-containing styryl dye and its complexes with metal ions: 1. Triplet states. HIGH ENERGY CHEMISTRY 2012. [DOI: 10.1134/s0018143912020038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Lin L, Fan W, Chen S, Ma J, Hu W, Lin Y, Zhang H, Huang R. Photochromism of (E)-4-phenyl-1-(pyridine-2-ylmethylene)semicarbazide. NEW J CHEM 2012. [DOI: 10.1039/c2nj40468k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Feng J, Tian K, Hu D, Wang S, Li S, Zeng Y, Li Y, Yang G. A Triarylboron-Based Fluorescent Thermometer: Sensitive Over a Wide Temperature Range. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102390] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Feng J, Tian K, Hu D, Wang S, Li S, Zeng Y, Li Y, Yang G. A Triarylboron-Based Fluorescent Thermometer: Sensitive Over a Wide Temperature Range. Angew Chem Int Ed Engl 2011; 50:8072-6. [DOI: 10.1002/anie.201102390] [Citation(s) in RCA: 282] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Indexed: 11/11/2022]
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44
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Lin CK, Prabhakar C, Yang JS. o-Amino Conjugation Effect on the Photochemistry of trans-Aminostilbenes. J Phys Chem A 2011; 115:3233-42. [DOI: 10.1021/jp200774g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cheng-Kai Lin
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan
| | - Ch. Prabhakar
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan
| | - Jye-Shane Yang
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan
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45
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Kumar D, Thomas KJ. Optical properties of pyrene and anthracene containing imidazoles: Experimental and theoretical investigations. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2010.12.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Chen KF, Chang CW, Lin JL, Hsu YC, Yeh MCP, Hsu CP, Sun SS. Photophysical Studies of Dipolar Organic Dyes That Feature a 1,3-Cyclohexadiene Conjugated Linkage: The Implication of a Twisted Intramolecular Charge-Transfer State on the Efficiency of Dye-Sensitized Solar Cells. Chemistry 2010; 16:12873-82. [DOI: 10.1002/chem.201001294] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Huang GJ, Yang JS. The N-Arylamino Conjugation Effect in the Photochemistry of Fluorescent Protein Chromophores and Aminostilbenes. Chem Asian J 2010; 5:2075-85. [DOI: 10.1002/asia.201000209] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Mac M, Danel A, Uchacz T, Gorycka S, Górz K, Leśniewski S, Kulig E. Investigation of the photoisomerisation process in four p-benzoxazoyl-substituted stilbenes. Photochem Photobiol Sci 2010; 9:357-64. [DOI: 10.1039/b9pp00098d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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