Double-channel emission from gold nanoparticles functionalized with a thermo-responsive copolymer ligand: preparation, optical properties and control of catalytic activity

作者：Wang, Dongmei; Liu, Bingxin; Lu, Jianhua; Lu, Changli

来源：RSC Advances, 2016, 6(91): 88179-88188.

DOI：10.1039/c6ra17690a

• 2,3-EPITHIOPROPYL METHACRYLATE
• RESPONSIVE CATALYSIS
• METAL NANOCLUSTERS
• AU NANOPARTICLES
• SIZE
• MICELLES
• REDUCTION
• DIBLOCK
• WATER
• IONS

Multifunctional fluorescent gold nanoparticles (Au NPs) were obtained in situ with the assistance of a novel thermo-responsive copolymer, p(NIPAM-co-ETMA) (PNE), containing NIPAM units and an episulfide moiety, for the first time. The PNE-decorated Au NPs can emit multiple colors due to the double-channel in their intrinsic luminescence core (460 nm) and electron transfer between the PNE ligand and unreduced Au+ on the surface of the Au NPs (530 nm). Moreover, these NPs capped with Au+ on the surface were able to efficiently catalyze the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH4 in an aqueous environment. The catalytic activity can be controlled by thermo-switching due to the sensitive thermally triggered response of PNE.

• 出版日期2016
• 单位东北师范大学; 青海大学