摘要
The interfacial electron transfer(IET) dynamics of single CdSe core/multilayer shell(CdS2MLZnCd-S1MLZnS1ML) quantum dots(QDs) on the(110) surface of a rutile TiO2 single crystal and TiO2 nanoparticles have been compared.The fluorescence decay rates of single QDs on TiO2 are faster than those on glass,an insulating substrate,due to IET from the QDs to TiO2.Whereas the average IET rates are similar for QDs on the single crystal and nanoparticles,the distribution of IET rates is much broader in the latter,indicating a broad distribution of QD adsorption sites on the TiO2 nanoparticles.
The interfacial electron transfer（IET） dynamics of single CdSe core/multilayer shell（CdS2MLZnCd-S1MLZnS1ML） quantum dots（QDs） on the（110） surface of a rutile TiO2 single crystal and TiO2 nanoparticles have been compared.The fluorescence decay rates of single QDs on TiO2 are faster than those on glass,an insulating substrate,due to IET from the QDs to TiO2.Whereas the average IET rates are similar for QDs on the single crystal and nanoparticles,the distribution of IET rates is much broader in the latter,indicating a broad distribution of QD adsorption sites on the TiO2 nanoparticles.
出处
《中国科学：化学》
CAS
CSCD
北大核心
2012年第1期113-113,共1页
SCIENTIA SINICA Chimica
