pyrylium;
thiapyrylium;
photosensitizer;
PET (photoinduced electron transfer);
D O I:
10.1002/ejoc.200500997
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A triarylpyrylium ion containing iodo and biphenyl substituents has been synthesized and its photophysical properties measured. Compared to its parent triphenylpyrylium ion, the photophysical data recorded for 4-(biphenyl-4-yl)-2,6bis(4-iodophenyl)pyrylium are significantly influenced by substitution. Remarkable decreases in fluorescence and phosphorescence quantum yields, a shorter singlet lifetime, and lower energies of the singlet and triplet excited states are observed. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)