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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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2
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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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3
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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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4
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Machado ND, Fernández MA, Häring M, Saldías C, Díaz DD. Niosomes encapsulated in biohydrogels for tunable delivery of phytoalexin resveratrol. RSC Adv 2019; 9:7601-7609. [PMID: 35521173 PMCID: PMC9061210 DOI: 10.1039/c8ra09655d] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 02/21/2019] [Indexed: 11/21/2022] Open
Abstract
A series of biohydrogels were evaluated as potential soft delivery vehicles for the encapsulation and subsequent release of niosomes loaded with resveratrol (RSV).
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Affiliation(s)
- Noelia D. Machado
- Instituto de Investigaciones en Físico-Química de Córdoba (INFIQC-CONICET)
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Mariana A. Fernández
- Instituto de Investigaciones en Físico-Química de Córdoba (INFIQC-CONICET)
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Marleen Häring
- Institute of Organic Chemistry
- University of Regensburg
- 93040 Regensburg
- Germany
| | - César Saldías
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Chile
| | - David Díaz Díaz
- Institute of Organic Chemistry
- University of Regensburg
- 93040 Regensburg
- Germany
- Instituto de Productos Naturales y Agrobiología del CSIC
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5
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Mathew R, Kayal S, Yapamanu AL. Excited state structural dynamics of 4-cyano-4′-hydroxystilbene: deciphering the signatures of proton-coupled electron transfer using ultrafast Raman loss spectroscopy. Phys Chem Chem Phys 2019; 21:22409-22419. [DOI: 10.1039/c9cp02923k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photo-initiated proton-coupled electron transfer process in the 4-cyano-4′-hydroxystilbene–tert-butylamine adduct strongly affects the excited-state structural dynamics of CHSB.
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Affiliation(s)
- Reshma Mathew
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Thiruvananthapuram 695551
- India
| | - Surajit Kayal
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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6
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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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7
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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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8
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Xie YS, Zhang XL, Xie K, Zhao Y, Wu H, Yang J. Chiral-aminoquinoline-based fluorescent pH probe with large stokes shift for bioimaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 179:51-57. [PMID: 28214676 DOI: 10.1016/j.saa.2017.02.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 02/08/2017] [Accepted: 02/10/2017] [Indexed: 06/06/2023]
Abstract
The aminoquinoline derivatives, (R)- and (S)-2-phenyl-2-(quinolin-6-ylamino)ethan-1-ol (R-PEO and S-PEO), were synthesized by a tandem one-pot three-step CN coupling method where Smiles rearrangement was the key procedure. The selected compound R-PEO showed a significant fluorescence enhancement with a turn-on ratio over 98-fold and enabled the real time determination of proton concentration in acidic solution. The fluorescence intensity of R-PEO exhibited strong pH-dependent performance with a large Stokes shift (115nm) and responded linearly to minor pH change within the range of 3.8-6.0. With the help of 1H NMR spectrum, we also confirmed the protonation of the quinoline unit should be the proposed reaction. Compared with the conjugated acid of N-hexylquinolin-6-amine (NQA), the conjugated acid of R-PEO shows significant planar intramolecular charge transfer (PICT) character. Furthermore, biological imaging proved that R-PEO probe can be used to monitor the pH change of S. cerevisiae in vivo.
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Affiliation(s)
- Yong-Sheng Xie
- The School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Xin-Ling Zhang
- The School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Kun Xie
- The School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Yanmei Zhao
- The School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Huan Wu
- The School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Jidong Yang
- The School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China.
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9
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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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Ghosh R, Manna B. Comparative photophysics and ultrafast dynamics of dimethylaminochalcone and a structurally rigid derivative: experimental identification of TICT coordinate. Phys Chem Chem Phys 2017; 19:23078-23084. [DOI: 10.1039/c7cp03461j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Restriction of torsional relaxation and solvent dependent competing photophysical dynamics of free and rigid dimethylaminochalcones were investigated by time resolved spectroscopy.
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Affiliation(s)
- Rajib Ghosh
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Biswajit Manna
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
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11
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Wiedbrauk S, Maerz B, Samoylova E, Reiner A, Trommer F, Mayer P, Zinth W, Dube H. Twisted Hemithioindigo Photoswitches: Solvent Polarity Determines the Type of Light-Induced Rotations. J Am Chem Soc 2016; 138:12219-27. [DOI: 10.1021/jacs.6b05981] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sandra Wiedbrauk
- Department
für Chemie, Ludwig-Maximilians-Universität München, D-81377 Munich, Germany
| | - Benjamin Maerz
- Institut
für Biomolekulare Optik, Ludwig-Maximilians-Universität München, D-80538 Munich, Germany
| | - Elena Samoylova
- Institut
für Biomolekulare Optik, Ludwig-Maximilians-Universität München, D-80538 Munich, Germany
| | - Anne Reiner
- Institut
für Biomolekulare Optik, Ludwig-Maximilians-Universität München, D-80538 Munich, Germany
| | - Florian Trommer
- Institut
für Biomolekulare Optik, Ludwig-Maximilians-Universität München, D-80538 Munich, Germany
| | - Peter Mayer
- Department
für Chemie, Ludwig-Maximilians-Universität München, D-81377 Munich, Germany
| | - Wolfgang Zinth
- Institut
für Biomolekulare Optik, Ludwig-Maximilians-Universität München, D-80538 Munich, Germany
| | - Henry Dube
- Department
für Chemie, Ludwig-Maximilians-Universität München, D-81377 Munich, Germany
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13
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Palakollu V, Kanvah S. α-Cyanostilbene based fluorophores: aggregation-induced enhanced emission, solvatochromism and the pH effect. NEW J CHEM 2014. [DOI: 10.1039/c4nj01103a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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14
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Yang JS, Yan JL. Synthesis and Properties of Triptycene-Diaminostilbene Hybrid Systems. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200600197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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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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17
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Coelho PJ, Castro MCR, Raposo MMM. Reversible trans–cis photoisomerization of new pyrrolidene heterocyclic imines. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.03.004] [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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18
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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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19
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Rafiq S, Sen P. Dielectric controlled excited state relaxation pathways of a representative push-pull stilbene: A mechanistic study using femtosecond fluorescence up-conversion technique. J Chem Phys 2013; 138:084308. [DOI: 10.1063/1.4792933] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Huang GJ, Cheng CW, Hsu HY, Prabhakar C, Lee YP, Diau EWG, Yang JS. Effects of Hydrogen Bonding on Internal Conversion of GFP-like Chromophores. I. The para-Amino Systems. J Phys Chem B 2013; 117:2695-704. [DOI: 10.1021/jp3093379] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guan-Jhih Huang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Chi-Wen Cheng
- Department of Applied Chemistry
and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Hung-Yu Hsu
- Department of Applied Chemistry
and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Ch. Prabhakar
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yuan-Pern Lee
- Department of Applied Chemistry
and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
- Institute of Atomic and Molecular
Sciences, Academia Sinica, Taipei 10617,
Taiwan
| | - Eric Wei-Guang Diau
- Department of Applied Chemistry
and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Jye-Shane Yang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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21
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Chen CT, Chao WS, Liu HW, Wei Y, Jou JH, Kumar S. Spirally configured cis-stilbene/fluorene hybrids as ambipolar, fluorescent materials for organic light emitting diode applications. RSC Adv 2013. [DOI: 10.1039/c3ra41642a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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22
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Lin CJ, Liu YH, Peng SM, Yang JS. Photoluminescence and trans → cis Photoisomerization of Aminostyrene-Conjugated Phenylpyridine C^N Ligands and Their Complexes with Platinum(II): The Styryl Position and the Amino Substituent Effects. J Phys Chem B 2012; 116:8222-32. [DOI: 10.1021/jp304893c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Che-Jen Lin
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Shie-Ming Peng
- 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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23
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Lin CK, Yang JS. Fluorescence response of TICT-active aminostilbenes to copper(II) ions: redox reaction vs ion recognition. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0627-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Palladium-Catalyzed sp2 C–N Bond Forming Reactions: Recent Developments and Applications. TOP ORGANOMETAL CHEM 2012. [DOI: 10.1007/3418_2012_56] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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25
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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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26
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Miura Y, Momotake A, Takeuchi K, Arai T. The use of dendrimers as high-performance shells for round-trip energy transfer: efficient trans-cisphotoisomerization from an excited triplet state produced within a dendrimer shell. Photochem Photobiol Sci 2011; 10:116-22. [DOI: 10.1039/c0pp00272k] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Liu X, Shu X, Zhou X, Zhang X, Zhu J. Ultra-sensitive fluorescent sensor for Hg2+ based on a donor-acceptor-donor framework. J Phys Chem A 2010; 114:13370-5. [PMID: 21141869 DOI: 10.1021/jp109304q] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new fluoroionophore [E-4,4'-di(N-(2-pyridyl)amino)stilbene, E1] with a donor-acceptor-donor framework, which features a central stilbene (acceptor) fluorophore and two terminal pyridylamino (donor) ionophores, is reported. The probe displays an ultrasensitive fluorescence quenching response toward Hg(2+) in H(2)O/THF. Coordination of Hg(2+) to E1 affords a 2:1 complex, enabling the detection of Hg(2+) at a concentration as low as 4.4 × 10(-14) M. The interactions between the two species have been thoroughly characterized with UV-vis absorption spectroscopy, fluorescence spectroscopy, and nuclear magnetic resonance spectroscopy. Density functional theory calculations provide further insights into the nature of the fluorescence quenching response. In contrast, a fluorescent molecule with the donor-acceptor architecture, E-4-(N-(2-pyridyl)amino)stilbene (E4), exhibits a greatly attenuated fluorescence quenching response toward Hg(2+).
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Affiliation(s)
- Xingqiang Liu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
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28
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Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2010.06.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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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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30
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Megyesi M, Biczók L, Görner H, Miskolczy Z. Effects of solvent polarity and hydrogen bonding on the fluorescence properties of trans-4-hydroxy-4′-nitrostilbenes. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.02.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Influences of protonation and hydrogen bonding on intramolecular charge transfer compounds possessing different spacers. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2009.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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32
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Gao F, Yang L, Wang J, Xu X, Li H, Zhang S. Synthesis ofp-Nitro-stilbene Derivatives with Different Linking Bonds: An Attempt to Tune Spectroscopy of Dyes with Molecular Engineering. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Yang JS, Yan JL, Liau KL, Tsai HHG, Hwang CY. Substituent effect on the ground- and excited-state torsional motions of pentiptycene-derived 1,4-bis(phenylethynyl)benzenes. J Photochem Photobiol A Chem 2009. [DOI: 10.1016/j.jphotochem.2009.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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34
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Sun W, Zhou C, Xu CH, Zhang YQ, Li ZX, Fang CJ, Sun LD, Yan CH. Intramolecular Charge Transfer in 5-Methoxy-2-(2-pyridyl)thiazole-Derived Fluorescent Molecules with Different Acceptor or Donor Substituents. J Phys Chem A 2009; 113:8635-46. [DOI: 10.1021/jp9007224] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Sun
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Can Zhou
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Chun-Hu Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Yi-Qun Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Zhan-Xian Li
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Chen-Jie Fang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Ling-Dong Sun
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
| | - Chun-Hua Yan
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
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35
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Yang JS, Lin CK, Lahoti AM, Tseng CK, Liu YH, Lee GH, Peng SM. Effect of Ground-State Twisting on the trans → cis Photoisomerization and TICT State Formation of Aminostilbenes. J Phys Chem A 2009; 113:4868-77. [DOI: 10.1021/jp807748t] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jye-Shane Yang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
| | - Cheng-Kai Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
| | - Anand M. Lahoti
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
| | - Chung-Kai Tseng
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, and Department of Chemistry, National Central University, Chungli, Taiwan 32001
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36
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Zhao GJ, Chen RK, Sun MT, Liu JY, Li GY, Gao YL, Han KL, Yang XC, Sun L. Photoinduced Intramolecular Charge Transfer and S2Fluorescence in Thiophene-π-Conjugated Donor-Acceptor Systems: Experimental and TDDFT Studies. Chemistry 2008; 14:6935-47. [DOI: 10.1002/chem.200701868] [Citation(s) in RCA: 191] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Yamaguchi Y, Shimoi Y, Ochi T, Wakamiya T, Matsubara Y, Yoshida ZI. Photophysical Properties of Oligophenylene Ethynylenes Modified by Donor and/or Acceptor Groups. J Phys Chem A 2008; 112:5074-84. [DOI: 10.1021/jp7113219] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshihiro Yamaguchi
- Department of Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaragi 305-8568, Japan, and National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Albert, Canada T6G 2M9
| | - Yukihiro Shimoi
- Department of Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaragi 305-8568, Japan, and National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Albert, Canada T6G 2M9
| | - Takanori Ochi
- Department of Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaragi 305-8568, Japan, and National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Albert, Canada T6G 2M9
| | - Tateaki Wakamiya
- Department of Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaragi 305-8568, Japan, and National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Albert, Canada T6G 2M9
| | - Yoshio Matsubara
- Department of Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaragi 305-8568, Japan, and National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Albert, Canada T6G 2M9
| | - Zen-ichi Yoshida
- Department of Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaragi 305-8568, Japan, and National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Albert, Canada T6G 2M9
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Yang JS, Huang GJ, Liu YH, Peng SM. Photoisomerization of the green fluorescence protein chromophore and the meta- and para-amino analogues. Chem Commun (Camb) 2008:1344-6. [PMID: 18389128 DOI: 10.1039/b717714c] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Z --> E photoisomerization and fluorescence quantum yields for the wild-type green fluorescence protein (GFP) chromophore (p-HBDI) and its meta- and para-amino analogues (m-ABDI and p-ABDI) in aprotic solvents (hexane, THF, and acetonitrile) and protic solvents (methanol and 10-20% H(2)O in THF) are reported. The dramatic decrease in the quantum yields on going from aprotic to protic solvents indicates the important role of solvent-solute hydrogen bonding in the nonradiative decay pathways. The enhanced fluorescence of m-ABDI is also discussed.
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Affiliation(s)
- Jye-Shane Yang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan.
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39
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Ernsting NP, Breffke J, Vorobyev DY, Duncan DA, Pfeffer I. Sub-picosecond fluorescence evolution of amino-cyano-stilbenes in methanol: polar solvation obeys continuum theory without evidence of twisting. Phys Chem Chem Phys 2008; 10:2043-9. [DOI: 10.1039/b717541h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Tian F, Debler EW, Millar DP, Deniz AA, Wilson IA, Schultz PG. The effects of antibodies on stilbene excited-state energetics. Angew Chem Int Ed Engl 2007; 45:7763-5. [PMID: 17089439 DOI: 10.1002/anie.200602720] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Feng Tian
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, SR202, La Jolla, CA 92037, USA
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Yang JS, Hwang CY, Chen MY. Bimodal fluorescence signaling based on control of the excited-state conformational twisting and the ground-state protonation processes. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.120] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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42
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Tian F, Debler EW, Millar DP, Deniz AA, Wilson IA, Schultz PG. The Effects of Antibodies on Stilbene Excited-State Energetics. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200602720] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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