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Proceedings Paper

Study on the photo-oxidation of near-infrared absorbing cyanine dye
Author(s): Jun Li; Ping Chen; Deshui Zheng; Tsuneki Okazaki; Masaaki Hayami
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Paper Abstract

The spectrum characteristic and photostability of three near-infrared absorbing cyanine dyes with typical structure have been studied. The results show that the stability of three dyes with molecular structure of heterocyclic stem nuclei against photooxidation is in such order: benzoxazole > benzothiazole > benselenazole. It was found through quenching experiments that the photooxidation of cyanine dyes not only relates to the singlet oxygen but also to the superoxide anoin, however single oxygen plays a dominant role. We have succeeded in drastically improving the photostability of three cyanine dyes by using a dithiol nickel chelate as a singlet oxygen quencher.

Paper Details

Date Published: 3 September 1996
PDF: 5 pages
Proc. SPIE 2931, Fourth International Symposium on Optical Storage (ISOS '96), (3 September 1996); doi: 10.1117/12.248688
Show Author Affiliations
Jun Li, Institute of Photographic Chemistry (China)
Ping Chen, Institute of Photographic Chemistry (China)
Deshui Zheng, Institute of Photographic Chemistry (China)
Tsuneki Okazaki, Nippon Kankoh-Shikiso Kenkyusho (Japan)
Masaaki Hayami, Nippon Kankoh-Shikiso Kenkyusho (Japan)

Published in SPIE Proceedings Vol. 2931:
Fourth International Symposium on Optical Storage (ISOS '96)
Fuxi Gan, Editor(s)

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