Dispersion Control of Organic Molecules in Extremely Limited Small Space: Cluster to Nanocrystals

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13262
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural chemistry
• Research Institution: Tohoku University
• Principal Investigator: OIKAWA Hidetoshi 東北大学, 多元物質科学研究所, 教授 (60134061)
• Co-Investigator(Renkei-kenkyūsha): MITSUI TADASHI 物質・材料研究機構, 先端的共通技術部門, 主任研究員 (90343863)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ナノ材料 / 相分離・結晶化過程 / クラスター・ナノ粒子 / 乳化重合 / 高分子微粒子 / ペリレン / 有機ナノ結晶 / 蛍光発光

Outline of Final Research Achievements

Aiming at investigating the structural correlations for physical properties of organic molecular clusters, some dispersion states, for example, molecule state, cluster, and organic nanocrystals, could be experimentally controlled suitably by finely optimizing the rates of phase separation, segregation, and crystallization of organic molecules embedded polymer microspheres that is a so-called extremely limited small space. “Phase separation in polymerization field and subsequent nanocrystallization process” has been developed successfully in perylene and polystyrene (PS) system. Actually, the state of perylene dispersed in polymer microspheres was analyzed and evaluated by the measurements with the conventional fluorescence spectroscopy, near-field scanning optical microscopy, and positron annihilation method. As a result, the intermediate dispersion state would be strongly suggested for the first time in the case of perylene embedded in PS microshperes.

Free Research Field

高分子材料化学