%0 Journal Article
%T zntbppc光物理化学性质的溶剂化效应
%A ogunsipeabimbola
%A nyokongtebello
%J 物理化学学报
%D 2011
%X thesolventviscositydependenceofthephotophysicalandphotochemicalpropertiesoftetra(tert-butylphenoxy)phthalocyaninatozinc(ii)(zntbppc)ispresented.thefluorescencequantumyields(φf)andstern-volmer′sconstant(ksv)forzntbppcfluorescencequenchingbybenzoquinoneinallthesolutionsfollowedasemi-empiricallawthatdependsonlyonthesolventviscosity.φfvaluesvarybetween0.08intetrahydrofuran(thf)and0.14indimethylsulphoxide(dmso).tripletquantumyields(φt)andlifetimes(τt)alsoexhibitclearsolventviscositydependencewiththevaluesbeinghigherinthemostviscoussolvents.theinteractionofthezntbppctripletstatewithoxygenwasfoundtobediffusion-controlled,buthigherrateconstantswereobservedinlow-viscositysolventslikethfandtoluene.absolutevaluesofsingletoxygenquantumyields(φδ)weredetermined,andthevaluesarecomparableinallthesolvents,whichisattributedtotheproximityofthezntbppctripletenergiesindifferentsolvents.
%K phthalocyanine
%K solvent
%K viscosity
%K fluorescence
%K tripletstate
%K singletoxygen
%U http://www.whxb.pku.edu.cn/CN/abstract/abstract27514.shtml