Deactivation of the first excited singlet state of thiophenols

Literature Information

Publication Date 2006-02-23
DOI 10.1039/B516924K
Impact Factor 3.676
Authors

Yasser M. Riyad, Sergej Naumov, Ralf Hermann, Ortwin Brede


View Original

Abstract

On the bases of picosecond and nanosecond laser flash photolysis with detection by emission and absorption spectroscopy, a quantitative description is given of all deactivation channels of the first excited singlet state of thiophenols ArSH(S1) such as fluorescence, intersystem crossing (ISC), chemical dissociation into radicals, and radiation-less internal conversion (IC). For this purpose, the photolysis of thiophenol and its methyl-, methoxy-, and chloro-substituted derivatives was studied in solvents of increasing polarity: 1-chlorobutane, ethanol, and acetonitrile. The fluorescence lifetime of the thiophenols was found to range from some hundreds of picoseconds up to a few nanoseconds, correlating with fluorescence quantum yields between 0.001–0.040, at room temperature. Depending on the substitution pattern of the aromatic ring, the quantum yield of the S–H bond dissociation was found to be between 0.3–0.5, irrespective of the solvent polarity. In laser photolysis, no triplet formation of the investigated compounds could be observed neither by the direct way nor by subsequent sensitization with β-carotene. As a difference to the total, the radiation-less internal conversion (ΦIC ≥ 0.5) was found to be the dominating process.

Related Literature

Synthesis of two novel [18F]fluorobenzene-containing radiotracers via spirocyclic iodonium ylides and positron emission tomography imaging of translocator protein (18 kDa) in ischemic brain

Masayuki Fujinaga, Katsushi Kumata, Yiding Zhang, Akiko Hatori, Tomoteru Yamasaki, Wakana Mori, Lin Xie, Ming-Rong Zhang

2018-08-31 Paper

DOI: 10.1039/C8OB01700J

Contents list

Front/Back Matter

DOI: 10.1039/C8OB90138D

Synthesis of functionalized 2,5-dihydropyrrole derivatives via a convenient [3 + 2] annulation of azomethine ylides with allenoates

Zhusheng Huang, Zonghao Dai, Jin Zhu, Fulai Yang, Qingfa Zhou

2018-08-28 Communication

DOI: 10.1039/C8OB01946K

Ruthenium-catalyzed enantioselective hydrogenation of quinoxalinones and quinazolinones

Chenghao Li, Shuxin Zhang, Shan Li, Yu Feng, Qing-Hua Fan

2021-12-03 Research Article

DOI: 10.1039/D1QO01598B

Eugenunilones A–H: rearranged sesquiterpenoids from Eugenia uniflora

Mu Chen, Jia-Qing Cao, Song Ang, Ting-Ni Zeng, Ni-Ping Li, Tang-Jia Yang, Jun-Shan Liu, Yan Wu, Wen-Cai Ye, Lei Wang

2021-12-03 Research Article

DOI: 10.1039/D1QO01629F

Promoting laccase activity towards non-phenolic substrates: a mechanistic investigation with some laccase–mediator systems

Paola Baiocco, Anna Maria Barreca, Maura Fabbrini, Carlo Galli, Patrizia Gentili

2002-11-29 Paper

DOI: 10.1039/B208951C

Catalytic asymmetric Tamura cycloaddition of homophthalic anhydrides with 2-arylidene-1,3-diones

Han Xu, Feng Sha, Qiong Li, Xin-Yan Wu

2018-09-19 Paper

DOI: 10.1039/C8OB01970C

Iron-catalysed carbene-transfer reactions of diazo acetonitrile

Claire Empel, Katharina J. Hock, Rene M. Koenigs

2018-09-20 Communication

DOI: 10.1039/C8OB01991F

An effective preparation of both 1,3-diketones and nitriles from alkynones with oximes as hydroxide sources

Pei Chen, Qian-Qian Zhang, Jia Guo, Lu-Lu Chen, Yan-Bo Wang, Xiao Zhang

2018-09-03 Paper

DOI: 10.1039/C8OB01861H

You might also like

Compound Q&A

Is 6-(3-Fluorophenyl)picolinic acid (CAS: 887982-40-3) safe?

6-(3-Fluorophenyl)picolinic acid is generally considered safe for laboratory use...

887982-40-36-(3-Fluorophenyl)pi...
Compound Q&A

What industries use (3R)-3-Pyrrolidinol (CAS: 2799-21-5)?

(3R)-3-Pyrrolidinol is used in the pharmaceutical industry as a precursor for dr...

2799-21-5(3R)-3-Pyrrolidinol
Compound Q&A

What precautions should be taken when handling (4R,5R)-4,5-Diethoxycarbonyl-2,2-dimethyldioxolane (CAS: 59779-75-8)?

When handling (4R,5R)-4,5-Diethoxycarbonyl-2,2-dimethyldioxolane (CAS: 59779-75-...

59779-75-8(4R,5R)-4,5-Diethoxy...
Compound Q&A

How is 1-(6-Chloroimidazo[1,2-b]pyridazin-3-yl)ethanone (CAS: 90734-71-7) typically synthesized?

1-(6-Chloroimidazo[1,2-b]pyridazin-3-yl)ethanone is often synthesized via a mult...

90734-71-71-(6-Chloroimidazo[1...
Compound Q&A

What is the market or research trend for N-Ethyl-3,4-dimethylbenzylamine (CAS: 39180-83-1)?

The market for N-Ethyl-3,4-dimethylbenzylamine (CAS: 39180-83-1) remains steady,...

39180-83-1N-Ethyl-3,4-dimethyl...
Compound Q&A

What is Tert-butyl 3-(pyrrolidin-1-yl)azetidine-1-carboxylate (CAS: 1019008-21-9)?

Tert-butyl 3-(pyrrolidin-1-yl)azetidine-1-carboxylate is a chemical compound wit...

1019008-21-9Tert-butyl 3-(pyrrol...
Compound Q&A

What regulatory guidelines apply to 1-Bromo-3-chloro-2,4-dimethoxybenzene (CAS: 1228956-93-1)?

1-Bromo-3-chloro-2,4-dimethoxybenzene (CAS: 1228956-93-1) falls under the classi...

1228956-93-11-Bromo-3-chloro-2,4...
Compound Q&A

Is 8-Bromo-2-methyl-3,4-dihydroisoquinolin-1(2H)-one (CAS: 1368622-07-4) safe?

The safety of 8-Bromo-2-methyl-3,4-dihydroisoquinolin-1(2H)-one (CAS: 1368622-07...

1368622-07-48-Bromo-2-methyl-3,4...
Compound Q&A

Is Benzyl [(3S)-2,6-dioxo-3-piperidinyl]carbamate (CAS: 22785-43-9) safe?

Benzyl [(3S)-2,6-dioxo-3-piperidinyl]carbamate is generally safe when handled wi...

22785-43-9Benzyl [(3S)-2,6-dio...
Compound Q&A

How should 1-{[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]sulfonyl}pyrrolidine (CAS: 928657-21-0) be stored?

1-{[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]sulfonyl}pyrrolidine s...

928657-21-01-{[4-(4,4,5,5-Tetra...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.