Substituent Dependence Charge Transfer and Photochemical Properties of Donor-Acceptor Substituted Ethenyl Thiophenes

被引：0
作者：
Naresh Kumar
Jagdeep Kumar
Prasanta Kumar Hota
机构：
[1] Hemvati Nandan Bahuguna Garhwal University,Department of Chemistry, School of Sciences
来源：
Journal of Fluorescence | 2017年 / 27卷
关键词：
Absorption; Fluorescence; Dipole moment; Photoisomerization; Charge transfer; Fluorescence quantum yield; Photoisomerization quantum yield;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Donor-acceptor conjugated molecules with efficient light induced properties represent interesting material for electronic device application. In this context, we have calculated excited state dipole moment of three ethenyl thiophenes (1–3) bearing varied electron donor-acceptor substituent in p-phenyl unit using Lippert-Mataga, Bakhshiev and Kawski method. It is found that 1 with strong electron-withdrawing nitro substituent, is exhibiting charge transfer and highly dipolar excited state as compared to 2 and 3. Photochemical studies of 1–3, indicate towards the charge transfer dependence trans-cis photoisomerization under direct irradiation condition. Compound 1 exhibits charge transfer and less efficient towards photoisomerization, whereas 2 and 3 undergo efficient photoisomerization.
引用
收藏
页码：1729 / 1738
页数：9
相关论文
共 161 条
[1]  
Palczewski K(2012)Chemistry and biology of vision J Biol Chem 287 1612-1619
[2]  
Dugave C(2003) isomerisation of organic molecules and biomolecules: implications and applications Chem Rev 103 2475-2532
[3]  
Demange L(2013)Shedding new light on retinal protein photochemistry Ann Rev Phys Chem 64 437-458
[4]  
Wand A(2007)Development of bacteriorhodopsin analogues and studies of charge separated excited states in the photoprocesses of linear polyenes Photochem Photobiol 83 50-62
[5]  
Gdor I(1989)The photophysics and photochemistry of α, ω-diphenylpolyene singlet states Chem Rev 89 1691-1702
[6]  
Zhu J(1991)Photoisomerisation dynamics of stilbenes Chem Rev 91 415-436
[7]  
Sheves M(2001)Substituted stilbenes: A new view on well-known systems. New applications in chemistry and biophysics J. Photochem. Photobiol. A: Chem 140 39-52
[8]  
Ruhman S(2003)Photochemical reactivity of polyenes: from dienes to rhodopsin, from microseconds to femtoseconds Photochem. Photobiol. Sci. 2 835-844
[9]  
Singh AK(2009)Effect of ground-state twisting on the trans → cis photoisomerization and TICT state formation of aminostilbenes J Phys Chem A 113 4868-4877
[10]  
Hota PK(2014)Donor-acceptor conjugated linear polyenes: a study of excited state intramolecular charge transfer, photoisomerization and fluorescence probe properties J Fluores 107 236-242
12345678910