对固体圆二色光谱测试方法的再认识--兼谈“浓度效应”  

Further Understanding on the Measurement Methods for Solid-State Circular Dichroism Spectroscopy——Discussion on Concentration Effects

作　　者：章慧[1,3] 颜建新[1] 吴舒婷[2] 李丹[1] 万仕刚[1] 丁雷[1] 林丽榕[1] 

机构地区：[1]厦门大学化学化工学院化学系,福建厦门361005 [2]福州大学化学化工学院化学系,福州350108 [3]中国科学院福建物质结构研究所,结构化学国家重点实验室,福州350002

出　　处：《物理化学学报》2013年第12期2481-2497,共17页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(21273175,21271150,21001026);中国科学院福建物质结构研究所结构化学国家重点实验室基金(20110006,20130008)资助项目~~

摘　　要：对近期发展的固体圆二色(CD)光谱测试方法进行了概述、评价和比较,着重探讨了"浓度效应"的存在使固体CD光谱失真的原因.通过对本课题组和其他作者已报道的四种化合物的固体CD谱再测试的反思,强调了依手性化合物的手性光谱学性质不同,根据浓度梯度实验选择其合适测试浓度的必要性.对固有手性的阻转异构化合物(S)-1,1-联二萘酚(S-BINOL)进行了成膜法固体CD谱浓度梯度测试,发现所得固体薄膜CD谱中也存在着"浓度效应".In this paper, the recent developments in measurement methods of solid-state circular dichroism （CD） spectroscopy were summarized and discussed, especially the effects of concentration on solid-state CD spectral distortions. By reinspection and introspection of the solid-state CD spectra of four reported compounds, concentration gradient measurements were proved to be necessary for appropriate concentrations, which are greatly related to the chiroptical properties. The thin film solid-state CD measurements of the inherently chiral atropisomer （S）-1,1＇-bi-2-naphthol （S-BINOL） were carried out with concentration gradient measurements. Using this film-state technique for the first time, the results show some subtle correlations between the CD curves and the special concentrations.

关 键 词：固体手性光谱 圆二色 测试方法 浓度效应 阻转异构 镜面对称性破缺 

分 类 号：O657.3[理学—分析化学]