Recovery-Redispersion Procedure for Noble-metal Nanocrystals Using a Stimuli-responsive Self-assemblies

2015 Fiscal Year Final Research Report

• Project/Area Number: 26790018
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: Chuo University
• Principal Investigator: Imura Clara 中央大学, 理工学部, 助教 (60707107)
• Research Collaborator: SHINDO Hitoshi 中央大学, 理工学部応用化学科, 教授 ; KAWAI Takeshi 東京理科大学, 工学部工業化学科, 教授 ; IMURA Yoshiro 東京理科大学, 工学部工業化学科, 助教
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 分子集合体 / 金属ナノ結晶 / 刺激応答性 / 超分子 / 界面活性剤 / 金 / 銀

Outline of Final Research Achievements

Various applications are expected for the noble-metal nanocrystals such as gold nanorod, gold spherical nanoparticles, and silver nanoparticles, because of their unique optical and catalytic properties. In order to reduce of the noble-metal materials however, development of recovery and reuse methods are required. In this work, it is demonstrated recovery of them using a long-chain amine derivative C16CA. The nano crystals were encapsulated in the C16CA lamellar-structured supramolecules due to the strong affinity of amine and carboxylate of C16CA. Recovered nano crystals were also redispersed by changing pH, and the optical and catalytic properties of them were remained along the recovery-redispersion procedure.

Free Research Field

コロイド界面化学