Ultrafast excited-state dynamics associated with the photoisomerization of a cyanine dye.
Ultrafast excited-state dynamics associated with the photoisomerization of a cyanine dye.
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与花青染料光异构化相关的超快激发态动力学。
DOI：
10.1063/1.4759264
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Q. Gong
中科院分区：
文献类型：
--
作者：
Zhenwei Wang;Saisai Chu;Shufeng Wang;Q. Gong
利用时间分辨荧光上转换技术研究了菁染料3，3 '-双（3-磺丙基）-5，5'-二甲氧基硫菁三乙铵盐的超快激发态动力学。荧光衰减可以很好地描述为三指数动力学，这表明激发态布居通过键扭曲，振动和辐射弛豫通道衰减。进一步的分析表明，随着荧光波长的增加，三个弛豫通道对荧光衰减的贡献呈现出非常不同的变化，通过这些变化可以得到激发态势能面不同区域的详细动力学过程.
The ultrafast excited-state dynamics of a cyanine dye, 3,3'-bis(3-sulfopropyl)-5,5'-dimethoxy-thiacyanine triethylaminium salt, was investigated by using conventional time-resolved fluorescence up-conversion technique. The fluorescence decay can be well described as tri-exponential kinetics, which indicates the excited-state population decays through the bond-twist, vibrational and radiative relaxation channels. Further analysis shows that the contributions of the three relaxation channels to the fluorescence decay demonstrate very different change with increasing the fluorescence wavelength, through which the detailed dynamics at different regions in the excited-state potential energy surface can be retrieved.
影响因子：
2.9
作者：
Allan, Charlotte S. M.;Lasorne, Benjamin;Robb, Michael A.
通讯作者：
Robb, Michael A.
影响因子：
56.9
作者：
SCHOENLEIN, RW;PETEANU, LA;SHANK, CV
通讯作者：
SHANK, CV