1
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Jiang Y, Zhu H, Chen J, Liao S. Organocatalytic [2 + 2] Photopolymerization under Visible Light: Accessing Sustainable Polymers from Cinnamic Acids. Macromol Rapid Commun 2023; 44:e2200702. [PMID: 36404649 DOI: 10.1002/marc.202200702] [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: 08/18/2022] [Revised: 10/30/2022] [Indexed: 11/22/2022]
Abstract
Herein, the successful development of a metal-free, solution [2 + 2] photopolymerization of natural cinnamic acid-derived bisolefinic monomers is reported, which is enabled by a strategy based on direct triplet state access via energy transfer catalysis. 2,2'-Methoxythioxanthone has been identified as an effective organic photocatalyst for the [2 + 2] photopolymerization in solution, which can be excited by visible light and activate the biscinnamate monomers via triplet energy transfer. This method features its metal-free conditions, visible light utilization, solution polymerization, and abundant biomass-based feedstock, as well as processable polymer products, which is different from the rigid, insoluble products obtained from solid-state photopolymerization. This solution polymerization method also shows a good compatibility to monomer structures; cinnamic acid-derived bisolefinic monomers with different linkers, including diamine, natural diol, and bisphenol, can all readily undergo [2 + 2] photopolymerization, and be transformed into colorless, sustainable polymers.
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Affiliation(s)
- Yu Jiang
- Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Hui Zhu
- Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Jianxu Chen
- Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, China.,Beijing National Laboratory for Molecular Science, Beijing, 100190, China
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2
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Metz S, Marian CM. Modulation of Intersystem Crossing by Chemical Composition and Solvent Effects: Benzophenone, Anthrone and Fluorenone. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Simon Metz
- Heinrich-Heine-University Düsseldorf Theoretical and Computational Chemistry Universitätsstraße 1 40225 Düsseldorf GERMANY
| | - Christel Maria Marian
- Heinrich-Heine-University Düsseldorf Insitute of Theoretical and Computational Chemistry Universitätsstr. 126.32 40225 Düsseldorf GERMANY
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3
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Liu Y, Wang H, Qu S, Li Y, Yang B, Zhao D. Theoretical calculation on excited state hydrogen bond kinetics of PRODAN derivative 2b molecule in methanol solution. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Chen L, Li YM, Zheng M, Wei X, Wang L. pH dependence of photochemical kinetics of thioxanthen-9-one from nanosecond time-resolved laser flash photolysis. CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2104057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Lin Chen
- School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China
| | - Yuan-ming Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Min Zheng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xin Wei
- School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China
| | - Lin Wang
- School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China
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5
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Chen L, Wang L, Zheng M, Wang L. Solvent dependence of photophysical and photochemical behaviors of thioxanthen-9-one. CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2004048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Lin Chen
- School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China
| | - Lei Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Min Zheng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Lin Wang
- School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China
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6
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Taha MA, Dappour AM, Ismail MA, Kamel AH, Abdel-Shafi AA. Solvent polarity indicators based on bithiophene carboxamidine hydrochloride salt derivatives. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Zhao D, Liu Y, Fan W. Role of the intermolecular hydrogen bond in microsolvated of a kind of PRODAN derivative with methanol on excited state. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Breloy L, Losantos R, Sampedro D, Marazzi M, Malval JP, Heo Y, Akimoto J, Ito Y, Brezová V, Versace DL. Allyl amino-thioxanthone derivatives as highly efficient visible light H-donors and co-polymerizable photoinitiators. Polym Chem 2020. [DOI: 10.1039/d0py00551g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Allyl-amino thioxanthone derivatives as new visible-light photoinitiators for efficient free-radical, cationic and thiol–ene polymerizations.
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Affiliation(s)
- Louise Breloy
- Institut de Chimie et de Matériaux Paris-Est (ICMPE)
- Equipe Systèmes Polymères Complexes
- 94320 Thiais
- France
| | - Raúl Losantos
- Universidad de La Rioja
- Departamento de Química
- Logroño
- Spain
| | - Diego Sampedro
- Universidad de La Rioja
- Departamento de Química
- Logroño
- Spain
| | - Marco Marazzi
- Department of Analytical Chemistry
- Physical Chemistry and Chemical Engineering
- Universidad de Alcalá
- E-28871 Alcalá de Henares
- Spain
| | - Jean-Pierre Malval
- Institut de Chimie et des Matériaux de Mulhouse (IS2M) – UMR 7361
- 68057 Mulhouse cedex
- France
| | - Yun Heo
- Emergent Bioengineering Materials Research Team
- RIKEN Center for Emergent Matter Science
- Saitama 351-0198
- Japan
| | - Jun Akimoto
- Nano Medical Engineering Laboratory
- RIKEN Cluster for Pioneering Research
- Saitama 351-0198
- Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team
- RIKEN Center for Emergent Matter Science
- Saitama 351-0198
- Japan
- Nano Medical Engineering Laboratory
| | - Vlasta Brezová
- Slovak University of Technology in Bratislava
- Faculty of Chemical and Food Technology
- Institute of Physical Chemistry and Chemical Physics
- Department of Physical Chemistry
- SK-812 37 Bratislava
| | - Davy-Louis Versace
- Institut de Chimie et de Matériaux Paris-Est (ICMPE)
- Equipe Systèmes Polymères Complexes
- 94320 Thiais
- France
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9
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Penfold TJ, Gindensperger E, Daniel C, Marian CM. Spin-Vibronic Mechanism for Intersystem Crossing. Chem Rev 2018; 118:6975-7025. [DOI: 10.1021/acs.chemrev.7b00617] [Citation(s) in RCA: 401] [Impact Index Per Article: 66.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Thomas J. Penfold
- Chemistry - School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon-Tyne NE1 7RU, United Kingdom
| | - Etienne Gindensperger
- Laboratoire de Chimie Quantique, Institut de Chimie UMR-7177, CNRS - Université de Strasbourg, 1 Rue Blaise Pascal 67008 Strasbourg, France
| | - Chantal Daniel
- Laboratoire de Chimie Quantique, Institut de Chimie UMR-7177, CNRS - Université de Strasbourg, 1 Rue Blaise Pascal 67008 Strasbourg, France
| | - Christel M. Marian
- Institut für Theoretische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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10
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Mundt R, Villnow T, Ziegenbein CT, Gilch P, Marian C, Rai-Constapel V. Thioxanthone in apolar solvents: ultrafast internal conversion precedes fast intersystem crossing. Phys Chem Chem Phys 2016; 18:6637-47. [DOI: 10.1039/c5cp06849e] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysics of thioxanthone dissolved in cyclohexane was studied by femtosecond fluorescence and transient absorption spectroscopy.
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Affiliation(s)
- Ramona Mundt
- Institut für Physikalische Chemie
- Heinrich-Heine-Universität Düsseldorf
- Universitätstr. 1
- D-40225 Düsseldorf
- Germany
| | - Torben Villnow
- Institut für Physikalische Chemie
- Heinrich-Heine-Universität Düsseldorf
- Universitätstr. 1
- D-40225 Düsseldorf
- Germany
| | - Christian Torres Ziegenbein
- Institut für Physikalische Chemie
- Heinrich-Heine-Universität Düsseldorf
- Universitätstr. 1
- D-40225 Düsseldorf
- Germany
| | - Peter Gilch
- Institut für Physikalische Chemie
- Heinrich-Heine-Universität Düsseldorf
- Universitätstr. 1
- D-40225 Düsseldorf
- Germany
| | - Christel Marian
- Institut für Theoretische Chemie und Computerchemie
- Heinrich-Heine-Universität Düsseldorf
- Universitätstr. 1
- D-40225 Düsseldorf
- Germany
| | - Vidisha Rai-Constapel
- Institut für Theoretische Chemie und Computerchemie
- Heinrich-Heine-Universität Düsseldorf
- Universitätstr. 1
- D-40225 Düsseldorf
- Germany
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11
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Villnow T, Ryseck G, Rai-Constapel V, Marian CM, Gilch P. Chimeric Behavior of Excited Thioxanthone in Protic Solvents: I. Experiments. J Phys Chem A 2014; 118:11696-707. [DOI: 10.1021/jp5099393] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- T. Villnow
- Institut für Physikalische Chemie and ‡Institut für Theoretische
Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätstrasse
1, D-40225 Düsseldorf, Germany
| | - G. Ryseck
- Institut für Physikalische Chemie and ‡Institut für Theoretische
Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätstrasse
1, D-40225 Düsseldorf, Germany
| | - V. Rai-Constapel
- Institut für Physikalische Chemie and ‡Institut für Theoretische
Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätstrasse
1, D-40225 Düsseldorf, Germany
| | - C. M. Marian
- Institut für Physikalische Chemie and ‡Institut für Theoretische
Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätstrasse
1, D-40225 Düsseldorf, Germany
| | - P. Gilch
- Institut für Physikalische Chemie and ‡Institut für Theoretische
Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätstrasse
1, D-40225 Düsseldorf, Germany
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12
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Rai-Constapel V, Villnow T, Ryseck G, Gilch P, Marian CM. Chimeric Behavior of Excited Thioxanthone in Protic Solvents: II. Theory. J Phys Chem A 2014; 118:11708-17. [DOI: 10.1021/jp5099415] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vidisha Rai-Constapel
- Institut für Theoretische Chemie und Computerchemie and ‡Institut für
Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse
1, D-40225 Düsseldorf, Germany
| | - Torben Villnow
- Institut für Theoretische Chemie und Computerchemie and ‡Institut für
Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse
1, D-40225 Düsseldorf, Germany
| | - Gerald Ryseck
- Institut für Theoretische Chemie und Computerchemie and ‡Institut für
Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse
1, D-40225 Düsseldorf, Germany
| | - Peter Gilch
- Institut für Theoretische Chemie und Computerchemie and ‡Institut für
Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse
1, D-40225 Düsseldorf, Germany
| | - Christel M. Marian
- Institut für Theoretische Chemie und Computerchemie and ‡Institut für
Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse
1, D-40225 Düsseldorf, Germany
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13
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Deactivation of 6-aminocoumarin intramolecular charge transfer excited state through hydrogen bonding. Int J Mol Sci 2014; 15:16628-48. [PMID: 25244014 PMCID: PMC4200807 DOI: 10.3390/ijms150916628] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 07/29/2014] [Accepted: 08/22/2014] [Indexed: 12/18/2022] Open
Abstract
This paper presents results of the spectral (absorption and emission) and photophysical study of 6-aminocoumarin (6AC) in various aprotic hydrogen-bond forming solvents. It was established that solvent polarity as well as hydrogen-bonding ability influence solute properties. The hydrogen-bonding interactions between S1-electronic excited solute and solvent molecules were found to facilitate the nonradiative deactivation processes. The energy-gap dependence on radiationless deactivation in aprotic solvents was found to be similar to that in protic solvents.
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14
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Wang H, Xie L, Peng Q, Meng L, Wang Y, Yi Y, Wang P. Novel thermally activated delayed fluorescence materials-thioxanthone derivatives and their applications for highly efficient OLEDs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5198-5204. [PMID: 24903266 DOI: 10.1002/adma.201401393] [Citation(s) in RCA: 226] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/12/2014] [Indexed: 06/03/2023]
Abstract
Thermally activated delayed fluorescence emitters with small energy gap between the triplet and singlet (ΔEST ), TXO-PhCz and TXO-TPA, have been successfully synthesized by combining a hole-transporting TPA/PhCz moiety and an electron-transporting TXO moiety. Both compounds display efficient solid-state luminescence with an efficient up-conversion of the triplet to singlet. OLEDs based on them exhibt high performance up to 21.5%, which is among the best reported for OLEDs.
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Affiliation(s)
- Hui Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
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15
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Etinski M, Rai-Constapel V, Marian CM. Time-dependent approach to spin-vibronic coupling: Implementation and assessment. J Chem Phys 2014; 140:114104. [DOI: 10.1063/1.4868484] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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16
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Li H, Yang Y, Yang D, Liu Y, Sun J. TDDFT study on the excited-state hydrogen bonding of N-(2-hydroxyethyl)-1,8-naphthalimide and N-(3-hydroxyethyl)-1,8-naphthalimide in methanol solution. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3255] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hui Li
- Department of physics; He Nan Normal University; Xinxiang Henan 453007 China
| | - Yonggang Yang
- Department of physics; He Nan Normal University; Xinxiang Henan 453007 China
| | - Dapeng Yang
- Department of physics; He Nan Normal University; Xinxiang Henan 453007 China
| | - Yufang Liu
- Department of physics; He Nan Normal University; Xinxiang Henan 453007 China
| | - Jinfeng Sun
- Department of physics; He Nan Normal University; Xinxiang Henan 453007 China
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17
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Pandey R, Umapathy S. Solvent-induced changes on the polarity of the triplet excited state of 2-chlorothioxanthone: From time-resolved absorption and resonance Raman spectroscopies. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2013.10.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Niu S, Schneider R, Vidal L, Balan L. Thioxanthone functionalized silver nanorods as smart photoinitiating assemblies to generate photopolymer/metal nano-objects. NANOSCALE 2013; 5:6538-6544. [PMID: 23760523 DOI: 10.1039/c3nr01256e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Silver nanorods (AgNRs) with lengths in the 50-60 nm range were synthesized and functionalized with 2-(2-mercaptoethyl)thioxanthone (C2TX) to generate AgNR@C2TX nanoassemblies. When irradiated at 377 nm in the presence of a diacrylate monomer, these dispersed nanoassemblies initiate radical photopolymerization, indicating that the excited singlet to triplet intersystem crossing process of C2TX in the vicinity of AgNRs was favored while the fluorescence of C2TX was completely quenched at the surface of NRs. SEM and TEM images confirmed the formation of a AgNR-polymer nanocomposite and the homogeneous dispersion of AgNRs in the polymer film. Moreover, under specific experimental conditions allowing the spatial extent of the polymerization to be limited, polymer-capped AgNRs were obtained (polymer diameter of ca. 1 nm).
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Affiliation(s)
- Songlin Niu
- Institut de Sciences des Matériaux de Mulhouse, CNRS UMR 7361, Université de Haute Alsace, 15 rue Jean Starcky, 68057, Mulhouse, France
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19
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Yang DP, Li H, Liu YF. A TD-DFT Study on the Effect of Intermolecular Hydrogen Bonding on the Photophysical Properties of N-Methyl-1,8-naphthalimide. J CHIN CHEM SOC-TAIP 2012. [DOI: 10.1002/jccs.201200353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Pandey R, Umapathy S. Simultaneous Detection of Two Triplets: A Time-Resolved Resonance Raman Study. J Phys Chem A 2012; 116:8484-9. [DOI: 10.1021/jp3047467] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rishikesh Pandey
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Siva Umapathy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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21
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Krystkowiak E, Koput J, Maciejewski A. Hydrogen bond effects in the ground and excited singlet states of 4H-1-benzopyrane-4-thione in water—theory and experiment. Phys Chem Chem Phys 2012; 14:8842-51. [DOI: 10.1039/c2cp23869a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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22
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Krystkowiak E, Dobek K, Burdziński G, Maciejewski A. Radiationless deactivation of 6-aminocoumarin from the S1-ICT state in nonspecifically interacting solvents. Photochem Photobiol Sci 2012; 11:1322-30. [DOI: 10.1039/c2pp25065a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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23
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Spin-orbit coupling and intersystem crossing in molecules. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2011. [DOI: 10.1002/wcms.83] [Citation(s) in RCA: 412] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Rai-Constapel V, Salzmann S, Marian CM. Isolated and Solvated Thioxanthone: A Photophysical Study. J Phys Chem A 2011; 115:8589-96. [DOI: 10.1021/jp2022456] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vidisha Rai-Constapel
- Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Susanne Salzmann
- Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Christel M. Marian
- Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
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25
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Pandey R, Umapathy S. Time-Resolved Resonance Raman Spectroscopic Studies on the Triplet Excited State of Thioxanthone. J Phys Chem A 2011; 115:7566-73. [DOI: 10.1021/jp202387v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rishikesh Pandey
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
| | - Siva Umapathy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
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26
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Santiago LEP, García C, Lhiaubet-Vallet V, Miranda MA, Oyola R. Solvent dependence of the photophysical properties of 2-chlorothioxanthone, the principal photoproduct of chlorprothixene. Photochem Photobiol 2011; 87:611-7. [PMID: 21294748 DOI: 10.1111/j.1751-1097.2011.00906.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
2-chlorothioxanthone (CTX) is used as photoinitiator for the reticulation of synthetic resins and for the preparation of pharmaceuticals. It was previously determined that CTX is the primary photoproduct of z-chlorprothixene (CPTX) when irradiated at 313 nm and is formed in an autocatalyzed reaction through an energy-transfer mechanism (Piñero et al. [2009] Photochem. Photobiol., 85, 895-900). In this work, the photophysical properties of CTX were measured in acetonitrile/water solutions to determine if their magnitude can affect the side effects of CPTX. The results show that CTX has higher absorption coefficients in the visible region (400-420 nm) and higher triplet quantum yields than its parent compound. Similar to TX, both properties strongly depend on the solvent polarity/hydroxylicity. The quantum yield of the triplet intermediate is very close to the value of the phenothiazine triplets. The phenothiazines are the most phototoxic antidepressants. Therefore, given the appropriate microenvironment, the photosensitization side effects of CPTX can be intensified on the production of CTX.
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Affiliation(s)
- Luis E Piñero Santiago
- Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Valencia, Spain
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27
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Mohammed OF. Ultrafast Intramolecular Charge Transfer of Formyl Perylene Observed Using Femtosecond Transient Absorption Spectroscopy. J Phys Chem A 2010; 114:11576-82. [DOI: 10.1021/jp107256f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Omar F. Mohammed
- Physical Biology Center for Ultrafast Science & Technology, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, United States, and Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
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Angulo G, Grilj J, Vauthey E, Serrano-Andrés L, Rubio-Pons Ò, Jacques P. Ultrafast Decay of the Excited Singlet States of Thioxanthone by Internal Conversion and Intersystem Crossing. Chemphyschem 2010; 11:480-8. [DOI: 10.1002/cphc.200900654] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tetraalkylammonium Salts of Amino Acids and Sulfur-Containing Amino Acids as Effective Co-Initiators of Free Radical Polymerization in the Presence of Aromatic Ketones. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800122] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Diffusion of linear macromolecules and spherical particles in semidilute polymer solutions and polymer networks. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.07.036] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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