Ultrafast Investigation of Excited-State Dynamics in Trans-4-methoxyazobenzene Studied by Femtosecond Transient Absorption Spectroscopy

doi:10.1063/1674-0068/31/cjcp1806155

	Ultrafast Investigation of Excited-State Dynamics in Trans-4-methoxyazobenzene Studied by Femtosecond Transient Absorption Spectroscopy
	Zhang, Song 2; Qin, Chen 1; Zhang, Bing 2; Li, Chun-hua 3; Wang, Ya-ping 3
刊名	CHINESE JOURNAL OF CHEMICAL PHYSICS
	2018-12-01
卷号	31 期号:6 页码:749-755
关键词	Photoisomerization Trans-4-methoxyazobenzene Femtosecond transient absorption spectroscopy
ISSN号	1674-0068
DOI	10.1063/1674-0068/31/cjcp1806155
英文摘要	The ultrafast photoisomerization and excited-state dynamics of trans-4-methoxyazobenzene (trans-4-MAB) in solutions were investigated by femtosecond transient absorption spectroscopy and quantum chemistry calculations. After being excited to the S-2 state, the two-dimensional transient absorptions spectra show that cis-4-MAB is produced and witnessed by the permanent positive absorption in 400-480 nm. Three decay components are determined to be 0.11, 1.4 and 2.9 ps in ethanol, and 0.16, 1.5 and 7.5 ps in ethylene glycol, respectively. The fast component is assigned to the internal conversion from the S-2 to S-1 state. The other relaxation pathways are correlated with the decay of the S-1 state via internal conversion and isomerization, and the vibrational cooling of the hot S-0 state of the cis-isomer. Comparing of the dynamics in different solvents, it is demonstrated that the photoisomerization pathway undergoes the inversion mechanism rather than the rotation mechanism.
资助项目	National Natural Science Foundation of China[21603049] ; National Natural Science Foundation of China[11674355] ; National Natural Science Foundation of China[11705043] ; National Natural Science Foundation of China[21327804] ; National Natural Science Foundation of China[11364043] ; Fundamental Research Funds for the Central Universities[JZ2015HGBZ0532] ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus[XC2016JZBZ11] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2016D01A058]
WOS关键词	N-PI-ASTERISK ; PHOTOISOMERIZATION DYNAMICS ; CIS-AZOBENZENE ; ISOMERIZATION ; FLUORESCENCE ; EFFICIENCY ; MECHANISM
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000455960700003
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Industry-University-Research Fund of Hefei University of Technology Xuancheng Campus ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/14024]
专题	中国科学院武汉物理与数学研究所
通讯作者	Zhang, Song; Qin, Chen
作者单位	1.Xinjiang Normal Univ, Sch Phys & Elect Engn, Key Lab Mineral Luminescent Mat & Microstruct Xin, Urumqi 830054, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China 3.Hefei Univ Technol, Sch Elect Sci & Appl Phys, Hefei 230009, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Song,Qin, Chen,Zhang, Bing,et al. Ultrafast Investigation of Excited-State Dynamics in Trans-4-methoxyazobenzene Studied by Femtosecond Transient Absorption Spectroscopy[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2018,31(6):749-755.
APA	Zhang, Song,Qin, Chen,Zhang, Bing,Li, Chun-hua,&Wang, Ya-ping.(2018).Ultrafast Investigation of Excited-State Dynamics in Trans-4-methoxyazobenzene Studied by Femtosecond Transient Absorption Spectroscopy.CHINESE JOURNAL OF CHEMICAL PHYSICS,31(6),749-755.
MLA	Zhang, Song,et al."Ultrafast Investigation of Excited-State Dynamics in Trans-4-methoxyazobenzene Studied by Femtosecond Transient Absorption Spectroscopy".CHINESE JOURNAL OF CHEMICAL PHYSICS 31.6(2018):749-755.