多壁碳纳米管上原位生长CdTe量子点及与牛血清蛋白的偶联

以巯基乙酸为稳定剂在水溶液中使 Cd2+与NaTeH在多壁碳纳米管（MWCNTs）上原位生长CdTe量子点(QDs)，并与生物分子牛血清蛋白（BSA）偶联.通过电镜、荧光、紫外、傅立叶红外等技术，对量子点-碳纳米管异质结（CdTe-MWCNTs）及异质结-牛血清蛋白复合物（CdTe-MWCNTs-BSA）进行表征.结果表明，活化的碳纳米管有微弱荧光，CdTe-MWCNTs异质结及CdTe-MWCNTs-BSA复合物均具有荧光性质，在碳纳米管壁上的CdTe量子点直径大约5 nm，它们具有不同的红外光谱特征.

In Situ Grown CdTe Quantum Dots on MWCNTs and Its Coupling with BSA

The CdTe quantum dots grew in situ on the multiwalled carbon nanotubes(MWCNTs) with thioglycollic acid as the stabilizer,Cd2+ and NaTeH as reactant in aqueous solution.The as prepared CdTe-MWCNTs quantum dots-MWCNTs heterojunctions could couple with bovine serum albumin(BSA).Both CdTe-MWCNTs and CdTe-MWCNTs-BSA were characterized by TEM,fluorescence spectrum,UV and FT-IR measurements.The fluorescence analysis showed that functionalized MWCNTs had weak fluorescence,both CdTe-MWCNTs heterojunctions and CdTe-MWCNTs-BSA multiplex exhibited fluorescence absorption.The TEM results revealed that the diameter of CdTe quantum dots was about 5 nm.The FT-IR spectra indicated that the CdTe quantum dots grew on the functionalized MWCNTs and coupled with BSA.