Millisecond intensity fluctuations of single molecules at room temperature

被引：66

作者：

Weston, KD ^{[1
]}

Buratto, SK ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Chem, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 1998年 / 102卷 / 21期

关键词：

D O I：

10.1021/jp973116z

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 show that single DiIC(12) molecules adsorbed on a silica surface display a new type of rapid intensity fluctuations between an "on" level and a "dim" level distinct from "on"-"off" blinking. These fluctuations are correlated in time and exhibit two correlation times, one of the order of 10 ms and the other of the order of 100 ms, which are likely due to small motions of the nuclear coordinates of the adsorbed molecule. In addition, molecules that show these fast fluctuations also have emission spectra blue-shifted from the emission spectrum of the ensemble, indicating that this behavior is sensitive to the binding site of the molecule.

引用

页码：3635 / 3638

页数：4

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