Nanosecond transient absorption study of photoinduced heat generation in microcrystals of X-metal-free phthalocyanine dispersed in polymer films

H. Van Mingroot, L. Viaene, M. Van der Auweraer, F. C. De Schryver, M. Ichikawa, H. Fukumura, H. Masuhara

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8 Citations (Scopus)

Abstract

Nanosecond transient absorption spectra were recorded following pulsed nanosecond laser excitation at 640 nm of dispersions of X-metal-free phthalocyanine in a film made either of copolymer of styrene and n-butyl methacrylate (70:30) or of bisphenol A-polycarbonate. The transient absorption spectra of the dye in a polymer matrix differ significantly from those obtained after laser excitation of phthalocyanine molecules in solution. Referring to the temperature difference spectra of the ground state absorption spectra and the effect of immersion of the polymer film into a solvent, the transient detected between 650 and 800 nm was assigned to a photoinduced thermal phenomenon.

Original languageEnglish
Pages (from-to)17174-17180
Number of pages7
JournalJournal of physical chemistry
Volume99
Issue number47
DOIs
Publication statusPublished - 1995

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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    Mingroot, H. V., Viaene, L., Auweraer, M. V. D., De Schryver, F. C., Ichikawa, M., Fukumura, H., & Masuhara, H. (1995). Nanosecond transient absorption study of photoinduced heat generation in microcrystals of X-metal-free phthalocyanine dispersed in polymer films. Journal of physical chemistry, 99(47), 17174-17180. https://doi.org/10.1021/j100047a021