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Indexed by:会议论文

Date of Publication:2011-01-01

Included Journals:CPCI-S

Page Number:992-996

Key Words:quantum dots (QDs); CdSe; Polyaniline (PAni); fluorescence life; charge transfer; energy transfer

Abstract:CdSe quantum dots (QDs) and Polyaniline (PAni) are mixed uniformly to prepare CdSe QDs/PAni complex. PAni can quench the fluorescent signal of CdSe QDs. The fluorescent intensity of CdSe QDs/PAni complex is related to the size of CdSe QDs and concentration of PAni. Ultraviolet visual (UV-Vis) absorption spectra, fluorescence spectra, time-resolved fluorescence spectroscopy are employed to analysis the quenching phenomenon. The mechanism of fluorescence quench is dependent on two factors: on one hand, the FOrster resonance energy transfer conducts from CdSe to PAni; on the other hand, PAni can intercept the electron charge of CdSe and lead to the interruption of radiative recombination.