Energy flow in push-pull chromophores: vibrational dynamics in para-nitroaniline.
Energy flow in push-pull chromophores: vibrational dynamics in para-nitroaniline.
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推拉发色团中的能量流:对硝基苯胺中的振动动力学。
DOI:
10.1002/cphc.200400288
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
Simpson,MCather
中科院分区:
文献类型:
--
作者:
Gunaratne,Tissa;Challa,JReddy;Simpson,MCather
para‐Nitroaniline (PNA) plays an essential role as the prototype model of push–pull chromophores. The nature and degree of participation of vibrational degrees of freedom in the charge‐transfer and internal‐conversion processes are current issues of great theoretical and practical importance. Ultrafast time‐resolved anti‐Stokes resonance Raman spectroscopy (TRARRS) experiments on PNA in dimethyl sulfoxide with three different excitation wavelengths were performed to probe these dynamical influences. The vibrational dynamics associated with S0were independent of incident wavelength, and this supports the picture that the S1dynamics are fast relative to the rate of intersystem crossing. The phenyl breathing modeν19(860 cm−1) and the symmetric NO2stretchν29(1310 cm−1) exhibited vibrational lifetimes in S0of 8.1 and 5.2 ps, respectively. No evidence for inhomogeneous broadening of the charge‐transfer band in the UV/Vis absorption spectrum was found.
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DOI:
10.1016/b978-0-12-170611-1.50007-3
发表时间:
1987
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
D. Pugh
通讯作者:
D. Pugh
影响因子:
2.8
作者:
A. Painelli
通讯作者:
A. Painelli
影响因子:
2.8
作者:
Andrew M. Moran;A. Kelley;S. Tretiak
通讯作者:
S. Tretiak
影响因子:
15
作者:
GOULD, IR;YOUNG, RH;FARID, S
通讯作者:
FARID, S
影响因子:
15
作者:
Kelley, AM;Leng, WN;Blanchard-Desce, M
通讯作者:
Blanchard-Desce, M