Plasmon Adsorption of Gold Nanocaps Modified by Diazonium Salt Molecules
ZHANG Ai-tang1，3, WANG Rui-zhi1,2, CUI Liang1*, LIU Jing-quan1,3*
1. Material Science and Engineering, Linyi University, Linyi 276000，China
2. Linyi International School, Linyi 276000, China
3. Material Science and Engineering, Qingdao University, Research Institute of Graphene Application Technology, Qingdao 266071, China
Abstract：In this work, gold nanocap-polystyrene particle (PSP) conjugates have been prepared using thermal deposition of gold flux onto PSP particle pre-coated on glass substrate, followed by the lift-up and separation into acetonitrile solvent under sonication. The hollow gold nanocaps were obtained after the PSPs were dissolved with dichloromethane. When the nanocaps were covalently modified with phenyl derivatives in diazonium salt form, the optical absorptions were found as red- or blue-shift, which was probably due to the changing of the electron density of the nanocap surface by the surface-bound electron donating or electron withdrawing functional groups.
Key words：Diazonium salt molecules; Gold nanocaps; Polystyrene microspheres; Nanocomposites
张爱堂，王睿智，崔 亮，刘敬权. 通过重氮盐分子表面修饰金纳米帽子探究其对等离子体共振吸收的影响[J]. 光谱学与光谱分析, 2019, 39(07): 2073-2076.
ZHANG Ai-tang, WANG Rui-zhi, CUI Liang, LIU Jing-quan. Plasmon Adsorption of Gold Nanocaps Modified by Diazonium Salt Molecules. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(07): 2073-2076.
