The photochemistry and photophysics of a series of non-peripherally substituted zinc phthalocyanines

Magda van Leeuwen, Andrew Beeby, Stephen H. Ashworth

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Photophysical and photochemical measurements have been made on a series of novel non-peripherally octa(alkyl-substituted) zinc phthalocyanines. Fluorescence quantum yields and lifetimes, triplet quantum yields and lifetimes and singlet delta oxygen quantum yields were measured in 1% v/v pyridine in toluene. The effects of alkyl substituents and increasing chain length relative to the unsubstituted parent molecule, zinc phthalocyanine (ZnPc), are discussed. ZnPc with alkyl substituents of chain length 5–15 carbons exhibited similar absorption and emission maxima (704 nm and 718 nm respectively) with the molar absorptivity of the Q-band [similar]105 M-1 cm-1. The series of compounds also exhibited triplet quantum yields of 0.78–0.84 and singlet oxygen quantum yields of 0.67–0.71.
Original languageEnglish
Pages (from-to)370–375
Number of pages6
JournalPhotochemical & Photobiological Sciences
Issue number3
Publication statusPublished - 2010

Cite this