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Energy and electron transfer properties of methyl pheophorbide-a in zinc porphyrin-pheophorbide dyads

✍ Scribed by Satoshi Shinoda; Hiroshi Tsukube; Yoshinobu Nishimura; Iwao Yamazaki; Atsuhiro Osuka

Book ID
104208065
Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
519 KB
Volume
53
Category
Article
ISSN
0040-4020

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✦ Synopsis

A series of ortho-, meta-and para-substituted zinc porphyrin-pheophorbide dyads were synthesized directly from methyl pheophorbide-a by trans-esterification of ~-keto methyl ester with hydroxymethyl substituted porphyrins. Quantitative energy transfer occurred from the excited zinc porphyrin to the pheophorbide. The excited state of the pheophorbide was quenched by an electron transfer reaction from the zinc porphyrin that was found to depend both on the distance between chromophores and the polarity of solvent.

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Photoinduced Electron and Energy Transfe
Photoinduced Electron and Energy Transfer in Dyads of Porphyrin Dimer and Perylene Tetracarboxylic Diimide
✍ Wei Xu; Hailong Chen; Yanfeng Wang; Chuntao Zhao; Xiyou Li; Shuangqing Wang; Yux 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 286 KB 👁 1 views

## Abstract Two compounds containing a porphyrin dimer and a perylene tetracarboxylic diimide (PDI) linked by phenyl (**1**) or ethylene groups (**2**) are prepared. The photophysical properties of these two compounds are investigated by steady state electronic absorption and fluorescence spectra a