一种保护层可揭除的新鲜多级银SERS活性基底  

Fresh Hierarchical Periodic Silver SERS-active Substrate with the Band-aid Protecting Layer

作　　者：徐蔚青[1] 管树霖 王祎[1] 王馨楠[1] 陶艳春[1] 徐抒平[1] XU Weiqing;GUAN Shulin;WANG Yi;WANG Xinnan;TAO Yanchun;XU Shuping(State Key Laboratory of Supramolecular Structure and Materials,Institute of Theoretical Chemistry,Jilin University,Changchun 130012,China;Department of Chemistry,College of Science,Yanbian University,Yanji 133002,China)

机构地区：[1]吉林大学超分子结构与材料国家重点实验室,理论化学研究所,长春130012 [2]延边大学理学院化学系,延吉133002

出　　处：《高等学校化学学报》2018年第12期2752-2757,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21573087,21573092,201873039)资助.

摘　　要：以多级结构的阳极氧化铝(AAO)为模板,通过真空蒸镀金属银层拷贝AAO的多级结构,获得了以AAO及铝基为保护层的银多级微纳结构.该保护层可在基底用于表面增强拉曼散射(SERS)检测时直接揭除.此方法解决了传统银材质纳米结构作为SERS基底使用时表面易被氧化及污染的问题,可最大程度保证基底的新鲜度,做到即用即揭.A novel band-aid like,hierarchical periodic structured,multilayered surface-enhanced Raman scattering(SERS)substrate was developed,which allows a fresh silver surface when peeling off the protector.It was prepared by the vacuum deposition of a thick Ag layer(600 nm)on a hierarchical periodic structured anodic alumina(AAO)that was achieved by anodizing a pre-patterned Al base by means of the nanoimprint lithography with a hard Ni mask,while the AAO layer plays a role of surface protector.Then,the Ag side was glued to a glass slide.When it is used for SERS,the AAO layer can be peeled off to allow for a naked,fresh Ag surface for SERS measurements.This method solves the problem of oxidation and pollution of traditional Ag SERS substrates,ensuring the freshness of the SERS substrate.The AAO preparation steps are largely simplified compared with other AAO preparation procedures.Owing to the use of the nanoimprint lithography,the periodic structure of the Ni stamp can be well copied,which insures the reducibility of the final SERS substrate in SERS measurements.Apparently,the substrate preparation is time-saving and easier,which makes this band-aid like SERS substrate promising for being a commercial SERS substrate.

关 键 词：表面增强拉曼散射基底 阳极氧化铝模板 保护层 

分 类 号：O647[理学—物理化学] O657[理学—化学]