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Vörös D, Angeletti A, Franchini C, Mai S, González L. Adsorption of 4-( N, N-Dimethylamino)-4'-nitrostilbene on an Amorphous Silica Glass Surface. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:22964-22974. [PMID: 38053626 PMCID: PMC10694811 DOI: 10.1021/acs.jpcc.3c05552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 12/07/2023]
Abstract
Stilbenes are a compelling class of organic photoswitches with a high degree of tunability that sensitively depend on their environment. In this study, we investigate the adsorption properties of 4-(N,N-dimethylamino)-4'-nitrostilbene (DANS), a push-pull stilbene, on amorphous silica glass. Plane-wave density functional theory (DFT) calculations are used to understand how the trans and cis isomers of DANS interact with the amorphous surface and which are the most preferred modes of adsorption. Our calculations revealed that the O-H···O hydrogen bonds between the nitro group and hydroxyl groups of the silica surface dominate the intramolecular interaction. In addition to hydrogen bonding, O-H···π interactions with the aromatic ring and double bond play a critical role in adsorption, whereas C-H···O interactions are present, but contribute little. Therefore, both isomers of DANS favor parallel orientations such that not only the functional groups but also the aromatic parts can strongly interact with the glass surface.
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Affiliation(s)
- Dóra Vörös
- Institute
of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
- Vienna
Doctoral School in Physics, University of
Vienna, Boltzmanngasse
5, 1090 Vienna, Austria
| | - Andrea Angeletti
- Computational
Materials Physics, Faculty of Physics, University
of Vienna, Kolingasse
14-16, 1090 Vienna, Austria
- Vienna
Doctoral School in Physics, University of
Vienna, Boltzmanngasse
5, 1090 Vienna, Austria
| | - Cesare Franchini
- Computational
Materials Physics, Faculty of Physics, University
of Vienna, Kolingasse
14-16, 1090 Vienna, Austria
- Department
of Physics and Astronomy ’Augusto Righi’, Alma Mater Studiorum—Università di Bologna, Bologna 40127, Italy
| | - Sebastian Mai
- Institute
of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Leticia González
- Institute
of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
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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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Tuning the Photophysics of Two-Arm Bis[(dimethylamino)styryl]benzene Derivatives by Heterocyclic Substitution. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248725. [PMID: 36557858 PMCID: PMC9787945 DOI: 10.3390/molecules27248725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/01/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
The identification of novel molecular systems with high fluorescence and significant non-linear optical (NLO) properties is a hot topic in the continuous search for new emissive probes. Here, the photobehavior of three two-arm bis[(dimethylamino)styryl]benzene derivatives, where the central benzene was replaced by pyridine, furan, or thiophene, was studied by stationary and time-resolved spectroscopic techniques with ns and fs resolution. The three molecules under investigation all showed positive fluorosolvatochromism, due to intramolecular charge-transfer (ICT) dynamics from the electron-donor dimethylamino groups, and significant fluorescence quantum yields, because of the population of a planar and emissive ICT state stabilized by intramolecular hydrogen-bond-like interactions. The NLO properties (hyperpolarizability coefficient and TPA cross-section) were also measured. The obtained results allowed the role of the central heteroaromatic ring to be disclosed. In particular, the introduction of the thiophene ring guarantees high fluorescent quantum yields irrespective of the polarity of the medium, and the largest hyperpolarizability coefficient because of the increased conjugation. An important and structure-dependent involvement of the triplet state was also highlighted, with the intersystem crossing being competitive with fluorescence, especially in the thiophene derivative, where the triplet was found to significantly sensitize molecular oxygen even in polar environment, leading to possible applications in photodynamic therapy.
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4
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Higashijima T, Kishikawa N, Kuroda N. Long-wavelength Fluorogenic Derivatization of Aryl Halides Based on the Formation of Stilbene by Heck Reaction with Vinylbenzenes. ANAL SCI 2020; 36:997-1001. [PMID: 32173676 DOI: 10.2116/analsci.20p031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/03/2020] [Indexed: 08/09/2023]
Abstract
The long-wavelength fluorogenic derivatization method for aryl halides was developed based on stilbene formation by the Heck coupling reaction between aryl halides and vinylbenzenes in the presence of palladium(II) acetate as a catalyst. Fluorescent maximum wavelengths of the derivative obtained by the proposed reaction were 365 - 450 nm, which were 50 - 100 nm longer than those of the biphenyl derivatives formed with our previously developed fluorogenic derivatization method. Also, by the investigation using vinylbenzenes containing electron-donating or -withdrawing functional groups, it was found that an internal charge transfer system could contribute to extend the emission wavelength of the derivative. Furthermore, the proposed reaction was applied to develop a pre-column derivatization HPLC with fluorescence detection method for aryl bromides using 4-vinylanisole. p-Substituted aryl bromide derivatives (i.e., p-bromobenzonitrile, p-bromoanisole, bromobenzene, p-bromobenzoic acid ethyl ester, p-bromotoluene) were successfully detected within 40 min with the detection limit of 0.007 - 0.264 μM. Despite the short reaction time of 10 min, the reaction yields for p-bromoanisole and bromobenzene were good at 101 and 87%, respectively.
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Affiliation(s)
- Takumi Higashijima
- Graduate School of Biomedical Sciences, Course of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Naoya Kishikawa
- Graduate School of Biomedical Sciences, Course of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Naotaka Kuroda
- Graduate School of Biomedical Sciences, Course of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.
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5
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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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6
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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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7
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Chiu C, Yang J. Photoluminescent and Photoresponsive Iptycene‐Incorporated π‐Conjugated Systems: Fundamentals and Applications. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900300] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Chun‐Wei Chiu
- Department of ChemistryNational Taiwan University No 1, Sec 4, Roosevelt Rd Taipei 10617 Taiwan
| | - Jye‐Shane Yang
- Department of ChemistryNational Taiwan University No 1, Sec 4, Roosevelt Rd Taipei 10617 Taiwan
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8
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Mencaroni L, Carlotti B, Cesaretti A, Elisei F, Grgičević A, Škorić I, Spalletti A. Competition between fluorescence and triplet production ruled by nitro groups in one-arm and two-arm styrylbenzene heteroanalogues. Photochem Photobiol Sci 2020; 19:1665-1676. [DOI: 10.1039/d0pp00271b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
One-arm nitro-stilbenoids shows high triplet yield, appealing for optoelectronic and photovoltaic devices while double-arm analogues, showing appreciable TPA, are candidates as emitting probes and traceable photosensitizers for photodynamic therapy.
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Affiliation(s)
- Letizia Mencaroni
- Department of Chemistry
- Biology and Biotechnology and “Centro di Eccellenza Materiali Innovativi Nanostrutturati” (CEMIN) University of Perugia
- Perugia
- Italy
| | - Benedetta Carlotti
- Department of Chemistry
- Biology and Biotechnology and “Centro di Eccellenza Materiali Innovativi Nanostrutturati” (CEMIN) University of Perugia
- Perugia
- Italy
| | - Alessio Cesaretti
- Department of Chemistry
- Biology and Biotechnology and “Centro di Eccellenza Materiali Innovativi Nanostrutturati” (CEMIN) University of Perugia
- Perugia
- Italy
| | - Fausto Elisei
- Department of Chemistry
- Biology and Biotechnology and “Centro di Eccellenza Materiali Innovativi Nanostrutturati” (CEMIN) University of Perugia
- Perugia
- Italy
| | - Ana Grgičević
- Department of Organic Chemistry
- Faculty of Chemical Engineering and Technology
- University of Zagreb
- Zagreb
- Croatia
| | - Irena Škorić
- Department of Organic Chemistry
- Faculty of Chemical Engineering and Technology
- University of Zagreb
- Zagreb
- Croatia
| | - Anna Spalletti
- Department of Chemistry
- Biology and Biotechnology and “Centro di Eccellenza Materiali Innovativi Nanostrutturati” (CEMIN) University of Perugia
- Perugia
- Italy
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9
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Tahara A, Kitahara I, Sakata D, Kuninobu Y, Nagashima H. Donor–Acceptor π-Conjugated Enamines: Functional Group-Compatible Synthesis from Amides and Their Photoabsorption and Photoluminescence Properties. J Org Chem 2019; 84:15236-15254. [DOI: 10.1021/acs.joc.9b02267] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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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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11
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Synthesis, structure, and photoluminescence properties of lanthanide based metal organic frameworks and a cadmium coordination polymer derived from 2,2′-diamino-trans 4,4′-stilbenedicarboxylate. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.005] [Citation(s) in RCA: 1] [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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12
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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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13
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Rajagopal SK, K. N, Deb S, Bhat V, Sasikumar D, Sebastian E, Hariharan M. Extending the scope of the carbonyl facilitated triplet excited state towards visible light excitation. Phys Chem Chem Phys 2018; 20:19120-19128. [DOI: 10.1039/c8cp01023d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A series of extended π-conjugated benzophenone analogs was synthesized through a facile Lewis-acid catalyzed Friedel–Crafts reaction in order to exploit the integral triplet state properties of benzophenone.
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Affiliation(s)
- Shinaj K. Rajagopal
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
| | - Nagaraj K.
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
| | - Somadrita Deb
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
| | - Vinayak Bhat
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
| | - Devika Sasikumar
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
| | - Ebin Sebastian
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
| | - Mahesh Hariharan
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM)
- Thiruvananthapuram 695551
- India
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14
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Danko M, Hrdlovič P, Martinická A, Benda A, Cigáň M. Spectral properties of ionic benzotristhiazole based donor-acceptor NLO-phores in polymer matrices and their one- and two-photon cellular imaging ability. Photochem Photobiol Sci 2017; 16:1832-1844. [PMID: 29143829 DOI: 10.1039/c7pp00239d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A series of ionic benzotristhiazolium (BTT) push-pull chromophores, with different nitrogen donor groups and different lengths of conjugated bridges, was successfully doped in polar polymer matrices (PVC and PSS). The spectral (photophysical) properties of their low concentration thin polymeric films are compared with those in solution and are discussed in terms of matrix polarity/viscosity influence, specific polymer-chromophore interaction, structure-spectral property relationship and Twisted Intramolecular Charge-Transfer (TICT) state formation. The elimination of a non-emissive phantom and TICT state formation by restricted intramolecular rotations in the polymer matrix or viscous solvent results in a relatively high ΦF of all the investigated NLO-phores; particularly for near-infrared NIR molecular rotors bearing diphenylamino and julolidine donor groups. Because of cationic characteristics, small molecular weight, calculated high second hyperpolarizability and significant emission efficiency dependence on surroundings' viscosity (rigidochromic effect), two dyes were chosen as candidates for potential fluorescent probes for one-photon (1P) and two photon (2P) cellular imaging. The selected BTT NLO-phore with a julolidine donor is promising as a mitochondria-specific fluorescent small molecular probe for live cell super-resolution imaging with low cytotoxicity and good photostability, and is also potentially suitable for super-resolution STED imaging.
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Affiliation(s)
- M Danko
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovak Republic.
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15
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Wang J, Rueck-Braun K. The Effect of Substituent-Dependent Photoinduced Intramolecular Charge Transfer on the Photochromism of Hemithioindigos. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700103] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Junjie Wang
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Germany
| | - Karola Rueck-Braun
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Germany
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16
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Olsen EPK, Arrechea PL, Buchwald SL. Mechanistic Insight Leads to a Ligand Which Facilitates the Palladium-Catalyzed Formation of 2-(Hetero)Arylaminooxazoles and 4-(Hetero)Arylaminothiazoles. Angew Chem Int Ed Engl 2017; 56:10569-10572. [PMID: 28605135 PMCID: PMC5657396 DOI: 10.1002/anie.201705525] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Indexed: 11/10/2022]
Abstract
By using mechanistic insight, a new ligand (EPhos) for the palladium-catalyzed C-N cross-coupling between primary amines and aryl halides has been developed. Employing an isopropoxy group at the C3-position favors the C-bound isomer of the ligand-supported palladium(II) complexes and leads to significantly improved reactivity. The use of a catalyst system based on EPhos with NaOPh as a mild homogeneous base proved to be very effective in the formation of 4-arylaminothiazoles and highly functionalized 2-arylaminooxazoles. Previously, these were not readily accessible using palladium catalysis.
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Affiliation(s)
- Esben P K Olsen
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Pedro L Arrechea
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Stephen L Buchwald
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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17
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Olsen EPK, Arrechea PL, Buchwald SL. Mechanistic Insight Leads to a Ligand Which Facilitates the Palladium-Catalyzed Formation of 2-(Hetero)Arylaminooxazoles and 4-(Hetero)Arylaminothiazoles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Esben P. K. Olsen
- Department of Chemistry; Room 18-490; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Pedro L. Arrechea
- Department of Chemistry; Room 18-490; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Stephen L. Buchwald
- Department of Chemistry; Room 18-490; Massachusetts Institute of Technology; Cambridge MA 02139 USA
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18
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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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19
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Jayasundara UK, Kim H, Sahteli KP, Cline JI, Bell TW. Proton-Gated Photoisomerization of Amino-Substituted Dibenzofulvene Rotors. Chemphyschem 2017; 18:59-63. [PMID: 27862796 DOI: 10.1002/cphc.201601214] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Indexed: 11/05/2022]
Abstract
Derivatives of 9-(2,2,2-triphenylethylidene)-fluorene (TEF) undergo E/Z photoisomerization and are candidates for light-powered molecular actuators and switches. The 2-substituted derivatives bearing an amino group (ATEF) or a dimethylamino group (DTEF) are weakly photoactive in the absence of acids, but protonation increases photoisomerization quantum yields by factors of 30-60. Such compounds may be useful for incorporation into pH-switchable photoactive devices.
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Affiliation(s)
| | - HyunJong Kim
- Department of Chemistry, University of Nevada, Reno, NV, 89557-0216, USA
| | - Krishna P Sahteli
- Department of Chemistry, University of Nevada, Reno, NV, 89557-0216, USA
| | - Joseph I Cline
- Department of Chemistry, University of Nevada, Reno, NV, 89557-0216, USA
| | - Thomas W Bell
- Department of Chemistry, University of Nevada, Reno, NV, 89557-0216, USA
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20
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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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