The active role of excited states of phenothiazines in photoinduced metal free atom transfer radical polymerization: singlet or triplet excited states?

文献信息

发布日期 2016-09-06

DOI 10.1039/C6PY01410K

影响因子 5.582

作者

Steffen Jockusch, Yusuf Yagci

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摘要

The active role of phenothiazine excited states in photoinduced metal-free atom transfer radical polymerization (ATRP) was investigated by using laser flash photolysis, fluorescence, phosphorescence and electron spin resonance spectroscopy. Weak fluorescence emission and short lifetimes of the singlet excited state (2.01 ns) together with high intersystem crossing quantum yields (∼0.6) and long triplet lifetimes (40 μs) indicate efficient intersystem crossing into the triplet state and its dominant role in a degenerative electron transfer process in photoinduced metal free ATRP.

期刊推荐

Main Group Chemistry

Journal of the Indian Institute of Science

NDT & E International

Journal of Asian Natural Products Research

Acta Metallurgica Sinica-English Letters

Bioorganic & Medicinal Chemistry Letters

Heteroatom Chemistry

Bioorganic & Medicinal Chemistry

Atomization and Sprays

Herald of the Russian Academy of Sciences

来源期刊

Polymer Chemistry

CiteScore: 8.6

自引率: 7.3%

年发文量: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

The active role of excited states of phenothiazines in photoinduced metal free atom transfer radical polymerization: singlet or triplet excited states?

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Polymer Chemistry

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