A SOLVATOCHROMIC METHOD FOR DETERMINING 2ND-ORDER POLARIZABILITIES OF ORGANIC-MOLECULES
A SOLVATOCHROMIC METHOD FOR DETERMINING 2ND-ORDER POLARIZABILITIES OF ORGANIC-MOLECULES
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DOI：
10.1021/jo00277a007
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发表时间：
1989-08-04
影响因子：
3.6
通讯作者：
TWIEG, RJ
中科院分区：
文献类型：
--
作者：
PALEY, MS;HARRIS, JM;TWIEG, RJ
利用二能级量子力学模型，发展了一种测定二次谐波产生（SHG）有机分子光学二阶极化率的简单实验方法。所需的值的激发态的偶极矩从溶剂化显色方法的基础上的麦克雷的理论治疗。用这种方法得到的一系列化合物的二阶极化率与传统的EFISH技术得到的结果相当。溶剂化显色法具有重要的优点，即可以用大多数化学实验室可用的简单设备快速进行测量。
A simple experimental method for determining optical second-order polarizabilities of organic molecules for second harmonic generation (SHG) is developed by using a two-level quantum mechanical model. Required values of excited-state dipolemoments are obtained from a solvatochromic method based on the theoretical treatment of McRae. Second-order polarizabilities obtained by this method for a series of compounds compare well with those obtainedby the conventional EFISH technique. The solvatochromic method has the important advantage that measurements can be made rapidly with simple equipment available in most chemistry laboratories.