Excited state relaxation pathways of 4-dimethylamino-β-nitrostyrene: Effect of solvent polarity and donor-acceptor conjugation
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- 作者：Amitabha Nandi ; Rajib Ghosh ; rajchem06@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Dipak K. Palit
- 刊名：Journal of Photochemistry & Photobiology, A: Chemistry
- 出版年：2016
- 出版时间：1 May 2016
- 年：2016
- 卷：321
- 期：Complete
- 页码：171-179
- 全文大小：2302 K
文摘
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The fluorescence yield of the molecule is highly solvent polarity dependent.
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Ultrafast studies revealed the mechanism of excited state deactivation and solvent polarity dependence.
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In nonpolar solvents, the S1 state deactivates through triplet state
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In polar solvents, the TICT relaxation around dimethylaniline and nitroethylene group occurs in 600 fs timescale.
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cis ↔ trans isomerization in nonpolar solvents occurs from triplet state.