journal6 ›› 2012, Vol. 33 ›› Issue (4): 101-105.DOI: 10.3969/j.issn.1007-2985.2012.04.023

• 化学化工 • 上一篇    下一篇

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

  

  1. (1.吉首大学化学化工学院,湖南 吉首 416000;2.南京大学生命分析化学教育部重点实验室,江苏 南京 210093)
  • 出版日期:2012-07-25 发布日期:2012-09-11
  • 作者简介:陈莉华(1961-),女,湖南吉首人,吉首大学化学化工学院教授,博士,主要从事纳米粒子的生物应用研究.
  • 基金资助:

    南京大学生命分析化学教育部重点实验室开放基金资助项目(KLACLS1003);国家自然科学基金资助项目(50802034)

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

  1. (1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China;2.State Key Laboratory of Analytical Chemistry for Life Science,Nanjing University,Nanjing 210093,China)
  • Online:2012-07-25 Published:2012-09-11

摘要: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.

关键词: 多壁碳纳米管, CdTe量子点, 牛血清蛋白

Abstract: 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.

Key words: MWCNTs, CdTe quantum dots, BSA

公众号 电子书橱 超星期刊 手机浏览 在线QQ