Selectivity of water-soluble proteins in single-walled carbon nanotube dispersions

被引：198

作者：

Matsuura, Koji

Saito, Takeshi

Okazaki, Toshiya

Ohshima, Satoshi

Yumura, Motoo

Iijima, Sumio

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Adv Carbon Mat, AIST, Tsukuba, Ibaraki 3058565, Japan

[2] Japan Fine Ceram Ctr, Tsukuba, Ibaraki, Japan

[3] AIST, Res Ctr Adv Carbon Mat, Tsukuba, Ibaraki 3058565, Japan

[4] Japan Sci Technol Corp, CREST, Res Ctr Adv Carbon Mat, AIST, Tsukuba, Ibaraki 3058565, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 429卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.08.044

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：

Proteins were screened by preparing dispersions of SWNTs to investigate the driving force of the interaction between single-walled carbon nanotubes (SMINTs) of mean diameter I nm and water-soluble proteins. Egg white lysozyme (LYS) and bovine serum albumin (BSA) dispersed SWNTs, whereas papain and pepsin could not. Far-UV circular dichroism spectra indicated that the LYS and BSA molecules that coat SWNT surfaces were partially denatured. From the amino acid composition, we ascribed the main driving force to the hydrophobic interactions between the side-wall of the SWNT and the inner hydrophobic domain exposed to the solvent during the three-dimensional change of the protein induced by sonication. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：497 / 502

页数：6

共 31 条

[1] Near-infrared optical sensors based on single-walled carbon nanotubes [J].