Dynamics of molecular diffusion of rhodamine 6G in silica nanochannels

被引：50

作者：

Kievsky, Y. Y. ^{[1
]}

Carey, B. ^{[1
]}

Naik, S. ^{[1
]}

Mangan, N. ^{[1
]}

ben-Avraham, D. ^{[1
]}

Sokolov, I. ^{[1
,2
]}

机构：

[1] Clarkson Univ, Dept Phys, Potsdam, NY 13699 USA

[2] Clarkson Univ, NanoBio Lab, Potsdam, NY 13699 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2008年 / 128卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2908875

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：

We describe a method to study diffusion of rhodamine 6G dye in single silica nanochannels using arrays of silica nanochannels. Dynamics of the molecules inside single nanochannel is found from the change of the dye concentration in solution with time. A 10(8) decrease in the dye diffusion coefficient relative to water was observed. In comparison to single fluorescent molecule studies, the presented method does not require fluorescence of the diffusing molecules.

引用

页数：5

共 33 条

[1] Electrically facilitated molecular transport. Analysis of the relative contributions of diffusion, migration, and electroosmosis to solute transport in an ion-exchange membrane [J].