文献类型：期刊文献

英文题名：Boosting electromagnetic enhancement for detection of non-adsorbing analytes on semiconductor SERS substrates

作者：Liu, Xinyu[1,2];Ye, Ziwei[1,2];Xiang, Qian[1];Xu, Zehong[1,2];Yue, Wenhui[1,2];Li, Chunchun[3];Xu, Yikai[3];Wang, Lingzhi[1,2];Cao, Xiaoming[1];Zhang, Jinlong[1,2]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat Joint Int Res Lab Precis Chem & Mo, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, Shanghai 200237, Peoples R China;[3]Queens Univ Belfast, Sch Chem & Chem Engn, Univ Rd, Belfast BT9 5AG, North Ireland

年份：2023

卷号：9

期号：6

起止页码：1464

外文期刊名：CHEM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001060930800001)】；

基金：This work was supported by the National Key R&D Program of China (2022YFE0107900), National Natural Science Foundation of China (22006038, 21972040, and 22022302), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03), the Program of Introducing Talents of Discipline to Universities (B20031, B16017), Innovation Program of ShanghaiMunicipal Education Commission (2021-01-07-00-02-E00106), the Science and Technology Commission of Shanghai Municipality (20DZ2250400 and 22230780200), and Fundamental Research Funds for the Central Universities (222201717003).

语种：英文

摘要：Surface-enhanced Raman spectroscopy (SERS) is a powerful technique that has found applications in many research fields. As promising alternatives to the current most popular plasmonic metal SERS substrates, semiconductor SERS substrates have many appealing attributes. However, they permit signal enhancement only to analytes adsorbed chemically on their surface, which means that semiconductor-based SERS can only be used for studying model analytes such as dyes or thiols. Using volatile organic compounds (VOCs) as an example, we demonstrate for the first time the detection of non-adsorbing analytes on ZnO nanoparticles. Specifically, this was achieved by coating ZnO nanoparticles with ZIF-8 shells, which enriches VOC molecules and dampens the decay of the electromagnetic field around their surface, thereby significantly boosting their electromagnetic enhancing capability such that it permits signal enhancement for non-adsorbing analytes. Importantly, the MOFcoating strategy is universal, which means that it may enable the detection of a wider variety of non-adsorbing analytes where conventional semiconductor-based SERS fails.