Microsecond Time-Resolved Infrared Spectroscopy of a Thin Film of τ-Form Metal-Free Phthalocyanine Fine Particles

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A microsecond time-resolved infrared spectrometer has been constructed. It is based on a dispersive infrared spectrometer modified for fast gated detection with a boxcar integrator synchronized with the photoexcitation by a high-repetition-rate cw Q-switched Nd: YAG laser. Time-resolved infrared spectra of τ-form metal-free phthalocyanine (τ-H2Pc) fine particles have been obtained with a gate width of 0.5 μs. It is most probable that the triplet exciton of τ-H2Pc and its bimolecular decay process (triplet-triplet annihilation) have been observed.

Keywords: Phthalocyanine fine particles; Time-resolved infrared spectroscopy; Triplet exciton; Triplet-triplet annihilation

Document Type: Rapid Communication

DOI: http://dx.doi.org/10.1366/0003702894201842

Affiliations: 1: Department of Chemistry, Faculty of Science, the University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan 2: Yamazaki Works, Hitachi Chemical Co., Ltd., Higashi-cho, Hitachi-shi, Ibaraki-ken, 317, Japan

Publication date: January 1, 1989

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