Functionalization of carbon nanotube AFM probes using tip-activated gases

被引：69

作者：

Wong, SS ^{[1
]}

Woolley, AT ^{[1
]}

Joselevich, E ^{[1
]}

Lieber, CM ^{[1
]}

机构：

[1] Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 306卷 / 5-6期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/S0009-2614(99)00488-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multiwalled carbon nanotube (MWNT) probe microscopy tips have been functionalized with gases, activated in a transient are produced at the tip ends. Adhesion measurements between these tips and hydroxyl-terminated monolayers versus pH reveal that MWNT tips reacted in O(2), H(2) and N(2) display acidic, pH-independent and basic properties, respectively. MWNT tips derivatized in O(2)/N(2) and H(2)/N(2) mixtures demonstrate the greater reactivity of carbon nanotubes towards O(2) and H(2), respectively. Moreover, the chemical reactivity of tips functionalized in N(2) suggests termination in aromatic nitrogen heterocycles. Tip-activated gas functionalization of MWNTs provides facile generation of chemically sensitive nanoprobes. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：219 / 225

页数：7

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