Electrochemical detection of single micelles through 'nano-impacts'

被引：69

作者：

Toh, H. S. ^{[1
]}

Compton, R. G. ^{[1
]}

机构：

[1] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

来源：

CHEMICAL SCIENCE | 2015年 / 6卷 / 08期

基金：

新加坡国家研究基金会; 欧洲研究理事会;

关键词：

NANOPARTICLE COLLISIONS; SILVER NANOPARTICLES; AQUEOUS-SOLUTION; ELECTRODES; VOLTAMMETRY; EXTRACTION; LIPOSOMES; BROMIDE; NICKEL; GOLD;

D O I：

10.1039/c5sc01635e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new class of 'soft' particles, micelles, is detected electrochemically via 'nano-impacts' for the first time. Short, sharp bursts of current are used to indicate the electrical contact of a single CTAB (cetyltrimethylammonium bromide) micelle with an electrode via the oxidation of the bromide content. The variation in CTAB concentration for such 'nano-impact' experiments shows that a significant number of 'spikes' are observed above the CMC (critical micelle concentration) and this is attributed to the formation of micelles. A comparison with dynamic light scattering is also reported.

引用

页码：5053 / 5058

页数：6

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