title: Synthesis of highly emissive PIPES-stabilized gold nanoclusters and gold nanocluster-doped silica nanoparticles.
abstract: Stable and highly emissive gold nanoclusters were successfully synthesized by means of stabilization with PIPES (PIPES-Au NCs, where PIPES = 1,4-piperazinediethanesulfonic acid) using a thermal synthetic strategy. By varying the amount of PIPES, two Au NCs with different emission maxima were obtained. The synthesized Au NCs were successfully incorporated into a porous silica matrix to generate fluorescent PIPES-Au NC doped silica nanoparticles. Sequential doping of the PIPES-Au NCs with tetraethylorthosilicate (TEOS) and 3-(aminopropyl)triethoxysilane (APTS) furnished a silica matrix, which effectively protected the PIPES-Au NCs during repeated washing with polar solvent and the composite of which exhibited enhanced emission.
authors.affiliation: Department of Chemistry, Hallym University, Chuncheon, Gangwon-do 200-702, Republic of Korea.
authors.forename: Min Hoon
authors.initials: MH
authors.lastname: Jang
authors.forename: Joonsung
authors.initials: J
authors.lastname: Pak
authors.forename: Hyojong
authors.initials: H
authors.lastname: Yoo