高等学校化学学报2018，Vol.39Issue(7)：1587-1591,5.DOI:10.7503/cjcu20170743
手性聚苯胺/二氧化硅核/壳复合物的合成及应用
Synthesis and Application of Chiral Polyaniline/Silica Dioxide Core/Shell Composite
摘要
Abstract
Hybrid core/shell composites,in which an organic core was surrounded by a layer of inorganic material,have been widely investigated both to improve the stability and surface chemistry of the core materials and chemical properties that are not possible from one material alone.This article reports a category of hybrid core/shell composite consist of an organic core(composed of an optically active polyaniline)and a shell(composed of silica dioxide)and thus exhibit optical activities.Chiral polyaniline [(+)-PANI ] was synthesized with aniline as monomer and D-camphorsulfonic acid[ D-(+)-CSA] as chiral dopant.The silica dioxide was coated on the surface of(+)-PANI by sol-gel approach,thus to obtain the chiral polyaniline/silica dioxide core/shell composite[(+)-PANI@SiO2].(+)-PANI and(+)-PANI@SiO2 were characterized by optical activity and regular morphology.The UV-Vis absorption spectra,circular dichroism and specific rotation demonstrated that the(+)-PANI and(+)-PANI@ SiO2 endowed with optical activity.Fourier transform infrared spectroscopy was used to verify the surface groups and the scanning electron microscopy was used to verify the core/shell conformation.The(+)-PANI and(+)-PANI@SiO2 were used as chiral selectors for the enantioselective crystallization of alanine racemates,respectively.L-alanine was preferable induced from the racemic solution.More times of inducing,e.e.% value is bigger.The shells could be further cross-linked for improving the properties of organic core.The investigations are of importance not only in chiral studies but also in materials due to the integration of organic helical polymers and inorganic materials in one single material.关键词
手性聚苯胺/二氧化硅/核/壳复合物/对映选择性结晶/丙氨酸Key words
Polyaniline/Silica dioxide/Hybrid core/shell composite/Enantioselective crystallization/Alanine分类
化学化工引用本文复制引用
杨倩,杨璨瑜,孙孔春,侯雯清,吴乐艳,沈报春..手性聚苯胺/二氧化硅核/壳复合物的合成及应用[J].高等学校化学学报,2018,39(7):1587-1591,5.基金项目
云南省科技厅-昆明医科大学联合专项重点项目[批准号:2017FE468(-172)]和昆明医科大学创新团队项目(批准号:CXTD201603)资助.Supported by the Yunnan Province Applied Basic Research Projects-Union Foundation,China[No.2017FE468(-172)] and the Kunming Medical University Innovation Team,China(No.CXTD201603). （-172）
