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Volume-conserved Twist Excited State of pi-Conjugated Molecules
Sun, Qin-chao1; Liu, Jian-yong1; Hao, Yan2; Yang, Xi-chuan2
关键词Volume-conserved Twisted State Time-resolved Photon Emission Photoisomerization
刊名CHINESE JOURNAL OF CHEMICAL PHYSICS
2010-12-01
DOI10.1088/1674-0068/23/06/637-642
23期:6页:637-642
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Physics, Atomic, Molecular & Chemical
研究领域[WOS]Physics
关键词[WOS]SENSITIZED SOLAR-CELLS ; DENSITY-FUNCTIONAL THEORY ; HIGH-EFFICIENCY ; ORGANIC-DYES ; TIO2 FILMS ; HULA-TWIST ; PHOTOISOMERIZATION ; ABSORPTION ; ISOMERIZATION ; BIOMOLECULES
英文摘要The excited state characters of HY103 have been studied by means of time-resolved photon emission (time-correlated single photon counting) and time dependent density functional theory calculations. The experimental and theoretical results demonstrate that HY103 dyes undergo an efficient one-bond-flip motion after photoexicitation at room temperature, which leads to a very short lifetime of the normal fluorescence state, and a weak fluorescence emission around 670 rim. However, when HY103 are excited in amorphous glasses at 77 K, the normal fluorescence emission is prolonged to nanoseconds time scale about 2 us, and the fluorescence emission is enhanced. Furthermore, a new emission state is produced, which is characterized as a volume-conserved twisted (VCT) state. This is the first observation of a VCT state. The experiment indicates that the VCT motion of excited state of pi-conjugated molecules in restricted environment can form a stable emission state, and the excited state character of pi-conjugated molecules in restricted environment is complex.
语种英语
WOS记录号WOS:000286298900004
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142070
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China
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Sun, Qin-chao,Liu, Jian-yong,Hao, Yan,et al. Volume-conserved Twist Excited State of pi-Conjugated Molecules[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2010,23(6):637-642.
APA Sun, Qin-chao,Liu, Jian-yong,Hao, Yan,&Yang, Xi-chuan.(2010).Volume-conserved Twist Excited State of pi-Conjugated Molecules.CHINESE JOURNAL OF CHEMICAL PHYSICS,23(6),637-642.
MLA Sun, Qin-chao,et al."Volume-conserved Twist Excited State of pi-Conjugated Molecules".CHINESE JOURNAL OF CHEMICAL PHYSICS 23.6(2010):637-642.
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