The synthesis of mono-6-thio-β-cyclodextrin capped CdTe QDs and its interaction with neutral red  

作　　者：WANG Lei,LIU ShaoPu,PENG JuanJuan & HE YouQiu Key Laboratory on Luminescence and Realtime Analysis,Ministry of Education School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400716,China 

出　　处：《Science China Chemistry》2010年第6期1358-1365,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (20875078)

摘　　要：This paper presents a novel method for the synthesis of CdTe quantum dots (QDs) capped with β-cyclodextrin in aqueous solution using both TGA and mono-6-thio-β-CD as stabilizers.The interaction between mono-6-thio-β-CD-CdTe QDs and neutral red (NR) was studied with fluorescence,UV-absorption and the resonance Rayleigh scattering spectrum.When its concentration was over 7.5 × 10-6 mol/L,the neutral red began to aggregate on the surface of the mono-6-thio-β-CD-CdTe QDs,which resulted in the mono-6-thio-β-CD-CdTe QDs particle size increasing,the sharply quenched fluorescence,and the marked increase of RRS intensity.This paper presents a novel method for the synthesis of CdTe quantum dots (QDs) capped with β-cyclodextrin in aqueous solution using both TGA and mono-6-thio-β-CD as stabilizers.The interaction between mono-6-thio-β-CD-CdTe QDs and neutral red (NR) was studied with fluorescence,UV-absorption and the resonance Rayleigh scattering spectrum.When its concentration was over 7.5 × 10-6 mol/L,the neutral red began to aggregate on the surface of the mono-6-thio-β-CD-CdTe QDs,which resulted in the mono-6-thio-β-CD-CdTe QDs particle size increasing,the sharply quenched fluorescence,and the marked increase of RRS intensity.

关 键 词：mono-6-thio-β-Cyclodextrin CDTE quantum DOTS thioglycolic acid NEUTRAL red 

分 类 号：O614.242[理学—无机化学]