Synthesis and evaluation of novel fluorescent small molecules based on hydrogen bonding and structural curvature

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05468
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Functional solid state chemistry
• Research Institution: Yamagata University
• Principal Investigator: Katagiri Hiroshi 山形大学, 大学院理工学研究科, 准教授 (40447206)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: スルホニルアニリン / 蛍光色素 / π共役系 / 芳香族 / ドナー・アクセプター / 水素結合 / 軌道節面 / 分子内電荷移動

Outline of Final Research Achievements

Highly emissive and stable multicolor sulfonylaniline-based fluorescent dyes have been prepared through different combinations of substituents. These fluorescent dyes showed emission in both solution and solid states, where intra- and intermolecular hydrogen bonds dominate, respectively. Moreover, the orbital energy and optical properties were fine-tuned, revealing that there was good correlation between the orbital energy and the electron-donating ability of the substituent. These molecules present a new trend for the design of organic fluorescent small molecules, and in particular, include a rational concept: fine tuning of optical properties via molecular-orbital distribution control. These findings are useful for orbital energy control in organic optoelectronic materials.

Free Research Field

有機化学