Measurement of the second-order molecular hyperpolarizability of fullerene anions by CARS spectroscopy

被引：14

作者：

Lascola, R ^{[1
]}

Wright, JC ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 290卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(98)00477-1

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 have determined the second-order molecular hyperpolarizability, gamma, for the fullerene anions C-60(2-) and C-60(3-) by use of coherent anti-Stokes Raman spectroscopy (CARS) vibrational lineshape analysis, We observe values that are only 2-3-times greater than the corresponding value for the singly charged anion C-60(-). The behavior of gamma with the addition of charge is explained by symmetry considerations, Comparison with similar results for rare earth-containing endohedral fullerenes suggests that increased charge on the cage, and not asymmetric charge distribution due to metal-cage interactions, is the primary reason for increased nonlinearity compared to neutral fullerenes. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：117 / 124

页数：8

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