zntbppc光物理化学性质的溶剂化效应

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.