Photoinduced intermolecular electron transfer and off-resonance Raman characteristics of Rhodamine 101/N,N-diethylaniline

被引：15

作者：

Jiang, Li-lin ^{[1
,2
]}

Liu, Wei-long ^{[1
]}

Song, Yun-fei ^{[1
]}

He, Xing ^{[1
]}

Wang, Yang ^{[1
]}

Wang, Chang ^{[1
]}

Wu, Hong-lin ^{[1
]}

Yang, Fang ^{[3
]}

Yang, Yan-qiang ^{[1
,4
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Hezhou Univ, Sch Mech & Elect Engn, Hezhou 542800, Peoples R China

[3] Harbin Inst Technol, Dept Optoelect Informat Sci Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150001, Peoples R China

[4] China Acad Engn Phys, Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Sichuan, Peoples R China

来源：

CHEMICAL PHYSICS | 2014年 / 429卷

基金：

中国国家自然科学基金;

关键词：

Photoinduced intermolecular electron transfer; Rhodamine; 101; Multiplex transient grating; Transient absorption; Forward electron transfer; Intramolecular vibrational relaxation; CHARGE-RECOMBINATION DYNAMICS; EXCITED-STATE DYNAMICS; ION-PAIRS; FLUORESCENCE LIFETIMES; SOLVENT REORGANIZATION; QUANTUM YIELDS; FREE-ENERGY; SPECTROSCOPY; 6G; ENHANCEMENT;

D O I：

10.1016/j.chemphys.2013.11.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ultrafast photoinduced intermolecular electron transfer (PIET) reaction of Rhodamine 101 (Rh101(+)) in N,N-diethylaniline (DEA) was investigated using off-resonance Raman, femtosecond time-resolved multiplex transient grating (TG) and transient absorption (TA) spectroscopies. The Raman spectra indicate that the C=C stretching vibration of the chromophore aromatic ring is more sensitive to ET compared with the C-C stretching mode. The ultrafast photoinduced intermolecular forward ET (FET) from DEA to Rh101(+)* occurs on a time scale of tau(FET) = 425-560 fs. The backward ET (BET) occurs in the inverted region with a time constant of tau(BET) = 46.16-51.40 ps. The intramolecular vibrational relaxation (IVR) process occurs on the excited state potential energy surface with the time constant of tau(IVR) = 2.77-5.39 ps. (C) 2013 Published by Elsevier B.V.

引用

页码：12 / 19

页数：8

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