基于AAO的异构二聚体阵列制备及表面增强拉曼特性研究  

Preparation of Heterodimers nanostructure based on AAO and study of surface-enhanced Raman characteristics

作　　者：张晶晶 李晨露 方子清 董军 ZHANG Jingjing;LI Chenlu;FANG Ziqing;DONG Jun(School of Electronic Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,Shaanxi)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《光散射学报》2024年第4期384-391,共8页The Journal of Light Scattering

基　　金：国家自然基金项目(12274341);陕西省自然基金重点项目(2022JZ-05)。

摘　　要：本文提出一种基于多孔氧化铝(Anodic Aluminum Oxide,AAO)基板为模版,采用交流电场组装技术在AAO纳米孔内组装被十六烷基三甲基溴化铵(Cetyl-trimethylammonium bromide,CTAB)包覆的大金球纳米颗粒,分析交流电场频率、电压对组装结果的作用影响,得到在孔内组装单颗粒的最佳制备条件。在此基础上,将前述制备衬底浸泡NDT分子溶液进行处理后,再将其浸泡在柠檬酸钠修饰的小金球胶体溶液中,小金球与1,9-壬二硫醇(1,9-nonanedithiol,NDT)分子修饰后的大金球嫁接组装,得到异构二聚体@AAO阵列衬底。选用罗丹明6G、结晶紫、阿斯巴甜为探针分子,探究所衬底具有高拉曼活性和增强均匀性,所得结果为拓展拉曼光谱技术的工程应用提供实验支撑。In this paper,we propose a method based on porous alumina(AAO)substrate as a template,using Alternating current(AC)electric field assembly technology to assemble large gold ball nanoparticles coated with CTAB in AAO nanopores,and analyze the effects of AC electric field frequency and voltage on the assembly results,and obtain the optimal conditions for the preparation of self-assembled single particles in the pores.On this basis,the prepared substrate was soaked in a colloidal solution of small gold balls modified with sodium citrate,and the single particles modified by NDT molecules were quantitatively coupled with a single morphology and coated with different nanoparticles on the surface to obtain Heterodimers@AAO array substrate.Rhodamine 6G,Crystal violet and Aspartame were selected as probe molecules to explore the high Raman activity and enhanced uniformity of the substrates,and the obtained results provided experimental support for the engineering application of Raman spectroscopy.

关 键 词：多孔氧化铝膜 表面增强拉曼散射 自组装方法 异构二聚体 

分 类 号：O433[机械工程—光学工程] O657.37[理学—光学]