Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 206, Issue 1, Pages 87-92Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2009.05.018
Keywords
Benzoporphyrin; Chlorin; Phosphorescence; Metal complex; Oxygen sensor
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Funding
- Austrian Science Fund FWF [P 21192-N17, M 1107-N22]
- Austrian Science Fund (FWF) [P 21192] Funding Source: researchfish
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Several phosphorescent platinum(II) and palladium(II) complexes of tetrapyrrole dyes are prepared in an attempt to improve the compatibility with red laser diodes. The nature of meso-substituents in benzoporphyrin macrocycle is found to affect mainly the position of the Soret band and has little influence on the Q-bands. in rigid polymeric matrices these dyes possess more favourable photochemical properties than corresponding meso-tetraphenyltetrabenzoporphyrins. Platinum(II) chlorins show good compatibility with 635 nm laser diode and 632.8 line of lie-Ne laser, and have moderate brightness with emission yields similar to 2%. Photophysical properties and photoslability of these dyes is assessed and compared with the known NIR-emitting oxygen indicators. (C) 2009 Elsevier B.V. All rights reserved.
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