The peculiar behavior of fullerene C60 in mixtures of 'good' and polar solvents: Colloidal particles in the toluene-methanol mixtures and some other systems

被引：19

作者：

Mchedlov-Petrossyan, N. O. ^{[1
]}

Kamneva, N. N. ^{[1
]}

Al-Shuuchi, Y. T. M. ^{[1
]}

Marynin, A. I. ^{[2
]}

Shekhovtsov, S. V. ^{[1
]}

机构：

[1] Kharkov VN Karazin Natl Univ, UA-61022 Kharkov, Ukraine

[2] Natl Univ Food Technol, Volodymyrska 68, UA-01601 Kiev, Ukraine

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2016年 / 509卷

关键词：

Fullerene C-60; Aggregates in methanol; Dynamic light scattering; UV-vis spectra; Toluene-methanol mixtures; Binary organic solvents; AROMATIC SOLVENTS; LIGHT FULLERENES; SOLUBILITY; AGGREGATION; C-70; DISPERSIONS; SCATTERING; CLUSTERS;

D O I：

10.1016/j.colsurfa.2016.09.045

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：

The state of C-60 in toluene-methanol mixtures and some other solvents was studied within the range of fullerene concentrations from 4 x 10(-7) to 4 x 10(-5) M. The variations in the particle size from ca. 200-500 to ca. 1 nm, as followed up using the dynamic light scattering (DLS) method, were compared with the UV-vis absorption spectra. The threshold composition of the mixed solvent, which corresponds to the disappearance of single C-60 molecules, depends on the fullerene concentration. In toluene-methanol systems, small amounts of large aggregates were detected via the DLS even under conditions of substantial predominance of single molecules. The examination of the fullerene in several other binary organic solvents reveals the specific features of the formation and behavior of the negatively charged colloidal particles. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：631 / 637

页数：7