ROTATIONAL RELAXATION AT THE AIR-WATER-INTERFACE BY TIME-RESOLVED 2ND HARMONIC-GENERATION

被引：63

作者：

CASTRO, A ^{[1
]}

SITZMANN, EV ^{[1
]}

ZHANG, D ^{[1
]}

EISENTHAL, KB ^{[1
]}

机构：

[1] COLUMBIA UNIV,DEPT CHEM,NEW YORK,NY 10027

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 18期

关键词：

D O I：

10.1021/j100171a003

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：

Time-resolved surface second harmonic generation has been used to study the picosecond rotational relaxation dynamics of free Rhodamine 6G molecules at the air/water interface. It was found that different elements of the second-order nonlinear susceptibility, chi-(2)ijk, show different kinetics, which indicates that rotational motions have been observed. The data also suggest that the observed rotational relaxation is due chiefly to the out-of-plane motions at the interface and that the ground- and excited-state molecules have different equilibrium orientational distributions.

引用

页码：6752 / 6753

页数：2

共 25 条

[1]

Alfano R. R., 1973, Optics Communications, V7, P191, DOI 10.1016/0030-4018(73)90007-2

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