Synthesis and characterization of carbon nanotube-nanocrystal heterostructures

被引：335

作者：

Banerjee, S

Wong, SS ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

[2] Brookhaven Natl Lab, Dept Chem & Mat Sci, Upton, NY 11973 USA

来源：

NANO LETTERS | 2002年 / 2卷 / 03期

关键词：

D O I：

10.1021/nl015651n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Oxidized single-walled carbon nanotubes (SWNTs) have been reacted with cadmium selenide (CdSe) nanocrystals, capped with mercaptothiol derivatives, as well as with titanium dioxide (TiO2) nanocrystals, functionalized with 11-aminoundecanoic acid to form nanoscale heterostructures, characterized by transmission electron microscopy and infrared spectroscopy. The reaction with acid-terminated CdSe nanocrystals and acid-terminated tubes was facilitated with the aid of intermediary linking agents, such as ethylenediamine and semicarbazide, in an amide-forming reaction in the presence of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride, EDC. Based on electronic absorption spectroscopy, charge transfer is thought to proceed from the nanocrystal to the nanotube in the CdSe-nanotube system, whereas in the TiO2-nanotube system, charge transfer is expected to occur from the nanotube to the nanocrystal.

引用

页码：195 / 200

页数：6

共 37 条

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