Precision synthesis and self-assembly of polymer-brush-afforded monodisperse disc-type particles

2014 Fiscal Year Final Research Report

• Project/Area Number: 25620174
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Polymer/Textile materials
• Research Institution: Kyoto University
• Principal Investigator: OHNO Kohji 京都大学, 化学研究所, 准教授 (00335217)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 高分子合成 / 高分子構造・物性 / ナノ材料 / 表面・界面物性

Outline of Final Research Achievements

Monodisperse polystyrene particles, swollen by a small amount of THF in water, were pressed by a magnetic stirrer bar, so that monodisperse disc-type polystyrene particles were produced by pressing monodisperse polystyrene particles, swollen by a small amount of THF in water, using a magnetic stirrer bar. The discs were coated with a silica layer by the sol-gel reaction with tetraethoxysilane, and were further surface-treated with a silane-coupling agent having an ATRP-initiating site. Surface-initiated ATRP of methyl methacrylate (MMA) were carried out on the initiator-modified disc particles. The polymerization proceeded in a living fashion, grafting well-defined polymer brushes with a high surface-density. The resultant hybrid particles show an excellent uniformity and dispersibility, and formed a beautiful two-dimensional array on water surface, placing their planar surfaces parallel to water one.

Free Research Field

高分子化学