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

Hiroshi Fukumura, Yoshikazu Yoneda, Hitoki Takahashi, Hiroshi Masuhara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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 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.

Original languageEnglish
Pages (from-to)509-510
Number of pages2
JournalChemistry Letters
Issue number7
DOIs
Publication statusPublished - 1996 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)

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