Synthetic studies on novel heteroaromatic compounds aiming at ambipolar light-emitting transistors

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550151
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Functional materials chemistry
• Research Institution: University of Toyama
• Principal Investigator: HAYASHI Naoto 富山大学, 大学院理工学研究部(理学), 准教授 (90281104)
• Co-Investigator(Kenkyū-buntansha): HIGUCHI Hiroyuki 富山大学, 大学院理工学研究部(理学), 教授 (00165094) ; YOSHINO Junro 富山大学, 大学院理工学研究部(理学), 助教 (70553353)
• Co-Investigator(Renkei-kenkyūsha): YOSHIDA Hiroyuki 京都大学, 化学研究所, 助教 (00283664)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 有機発光トランジスタ / フラン / キノン / 凝集誘起発光 / 異性体 / 縮環向き

Outline of Final Research Achievements

In order to develop high-performance ambipolar light-emitting transistors, some novel heteroaromatic compounds bearing furan moieties as electron-donating units and pyradine or quinone moiety as electron-accepting unit were synthesized and their solid-state structure and properties have been examined. Two regioisomer with respect to the orientation of fused furan rings were studied. Unfortunately, charge mobilities of these samples were observed to be low due to unfavorable thin-film structure. Nevertheless, they demonstrated unexpectedly high fluorescence quantum yields in solid state, which is known as aggregation-induced emission, AIE. The observation of AIE should arise from either enhanced excimer emission or suppression of molecular motion in solid state.

Free Research Field

固体有機化学