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题名: The ultrafast dynamics of near-infrared heptamethine cyanine dye in alcoholic and aprotic solvents
作者: Zhou, Li-Chuan;  Liu, Jian-Yong;  Zhao, Guang-Jiu;  Shi, Ying;  Peng, Xiao-Jun;  Han, Ke-Li
通讯作者: 刘建勇 ;  彭孝军
关键词: the hydrogen bond ;  the heptamethine cyanine dye ;  the intramolecular vibrational redistribution ;  solvation ;  the femtosecond time-resolved stimulated emission pumping fluorescence depletion technique
刊名: CHEMICAL PHYSICS
发表日期: 2007-03-30
DOI: 10.1016/j.chemphys.2007.01.019
卷: 333, 期:2-3, 页:179-185
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1101
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The ultrafast dynamics of a synthesized near-infrared heptamethine cyanine dye has been studied in the typical alcoholic and aprotic solvents using the ferntosecond time-resolved stimulated emission pumping fluorescence depletion (FS TR SEP FD) technique. The faster decay on the hundreds of the ferritosecond time scale and the slower decay on the order of picosecond are found. The intramolecular vibrational redistribution (IVR) and the ultrafast solvent inertial relaxation should account for the faster decay, while the slower decay is attributed to the diffusive solvent relaxation. The time constants of the slower decay increase with the hydrogen-bonding energy in alcoholic solvent, and the time constants of the slower decay decrease with the dipole moments of the aprotic solvent molecules due to the interactions between the aprotic molecules and the excited dye molecule. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: FEMTOSECOND SOLVATION DYNAMICS ;  TIME-DEPENDENT FLUORESCENCE ;  RISM/MODE-COUPLING THEORY ;  POLAR SOLVATION ;  STOKES SHIFT ;  RESOLVED FLUORESCENCE ;  STIMULATED-EMISSION ;  CHARGE-TRANSFER ;  NONEQUILIBRIUM SOLVATION ;  VIBRATIONAL-RELAXATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000246060500010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98609
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
Zhou, Li-Chuan,Liu, Jian-Yong,Zhao, Guang-Jiu,et al. The ultrafast dynamics of near-infrared heptamethine cyanine dye in alcoholic and aprotic solvents[J]. CHEMICAL PHYSICS,2007,333(2-3):179-185.
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