文档介绍：Encyclopedia of
Nanoscience and
Nanotechnology
Chemical Derivatization of
Carbon Nanotube Tips
Vladimir A. Basiuk, Elena V. Basiuk (Golovataya-Dzhymbeeva)
Universidad Nacional Autónoma de México, México ., Mexico
CONTENTS bound to SWNTs [3]. Besides that, almost any technologi-
cal application requires chemically pure and uniform nano-
1. Introduction tubes, which can be manipulated and investigated by analyt-
2. Oxidized Nanotubes ical methods. Unfortunately, this remains a great challenge
for chemists and material scientists. In this context, chemi-
3. Derivatization cal derivatization is an especially attractive goal, since it can
4. Spectroscopic Characterization improve solubility and processibility Ts (SWNTs first
of all) and allows their unique properties to be coupled to
5. Properties
those of other types of materials [4].
6. Conclusions A systematic development of the methods T chem-
Glossary ical functionalization started very recently: first results were
published in 1998 [5–8]. The studies are focused primarily
References on SWNTs, which are much easier to handle and charac-
terize due to their simpler, monomolecular structure, higher
uniformity and solubility pared to those of MWNTs.
1. INTRODUCTION Two recent reviews [3 4] summarized covalent chemistry
of SWNTs (prised the data as of 2001; this area
Despite the short history of carbon nanotubes (CNTs), com- has been considerably enriched during the subsequent year).
prising single-walled and multiwalled nanotubes (SWNTs The authors considered all known types of the reactions,
and MWNTs, respectively), this class of materials gained which can be divided into two main groups: (a) defect-
unprecedented attention of scientists in different fields. The group functionalization and (b) covalent sidewall function-
reason is Ts possess a number of chemical, struc- alization. In this chapter we focus on the former group.
tural, mechanical, and electronic properti