特殊荧光性能的高分散石墨烯-芳香胺纳米复合物的制备与表征  

The Preparation and Characterization of High Dissolution and Peculiar Light Emission of graphene Nanosheets in Aromatic Amine Solvents

作　　者：马璀[1] 郑志祥[1] 闫乾顺[1] 

机构地区：[1]宁夏医科大学基础医学院医用化学系,宁夏银川750004

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2014年第6期761-765,770,共6页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21365017);宁夏自然科学基金资助项目(NZ13077);宁夏医科大学特殊人才启动项目(XT201306)

摘　　要：利用有机-水相界面电荷转移自组装技术,原位合成了一种具有良好溶解性能和特殊光学性能的石墨烯-芳香胺纳米复合物,利用场发射扫描电镜(SEM)及透射电镜(TEM)对复合物进行形貌分析,利用紫外分光光谱及荧光光谱仪进行光学性能研究.结果表明,石墨烯-苯胺纳米复合物既可以溶解在大多数的有机溶剂中,也可以很好地溶解在水中.合成的石墨烯-芳香胺纳米复合物将石墨烯在苯胺中的溶解度提高到1.6%,且具有特殊的荧光性能.研究还发现,石墨烯-苯胺纳米复合物在甲醇和甲苯中的荧光发射强度较丙酮中有明显的降低,其荧光发射强度随苯胺中石墨烯含量的增加先增大后降低.A new facile in situ direct synthesis method of graphene—aniline（Gr—aniline）nanocomplex by a charge—transfer self—assembly technology at organic—aqueous interface was developed in this work.The morphology of Gr—aniline was characterization by SEM and TEM,respectively.The optical performance was studied using ultraviolet spectrometry and fluorescence spectrophotometer,respectively.The results show that the graphene nanosheets can be dissolved in aniline without any prior chemical functionalization, and the Gr—aniline is then soluble in a variety of organic solvents.The graphene—aniline can increase the dissolution of graphene in organic solvents.The solubility of graphene in aniline is up to 1 .6 wt.%.The fluorescence emission intensity of graphene—aniline is weakening in methanol and toluene than in acetone, and the fluorescence intensity of graphene—aniline increased with the increasing of graphene content in aniline,and then decreases.

关 键 词：石墨烯 石墨烯-苯胺 纳米复合物 自组装 荧光性能 

分 类 号：O613[理学—无机化学]