Photothermal dynamics at the surface of copper phthalocyanine solid revealed by time-resolved regular reflection spectroscopy

被引:7
作者
Fukumura, H [1 ]
Yoneda, Y [1 ]
Takahashi, H [1 ]
Masuhara, H [1 ]
机构
[1] KYOTO INST TECHNOL, KYOTO 612, JAPAN
关键词
D O I
10.1246/cl.1996.509
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Flat surfaces of compressed pellets made of copper phthalocyanine powders were excited by nanosecond laser pulses and their time-resolved extinction coefficients were obtained by using regular I reflection spectroscopy independent of Kramers-Kronig transformation. The results showed transient depletion at the peaks of the ground state absorption spectra, which is due to a change in thermal population in vibrational states. The decay of the transient depletion was well described with the temperature dependency of extinction coefficient based on Sulzer-Wieland approximation and one-dimensional thermal diffusion towards the deep parts of the pellet samples.
引用
收藏
页码:509 / 510
页数:2
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