Development of Fluorescent Sensors for Water and Their Functional Dye Material Characteristics

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H02754
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 34030:Green sustainable chemistry and environmental chemistry-related
• Research Institution: Hiroshima University
• Principal Investigator: Ooyama Yousuke 広島大学, 先進理工系科学研究科(工), 教授 (60403581)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 蛍光性水センサー / 水 / 光誘起電子移動 / 分子内電荷移動 / 蛍光共鳴エネルギー移動 / 蛍光性水センサーフィルム

Outline of Final Research Achievements

Development of fluorescence sensing methods for detection and quantification of water in samples has received considerable attention from the viewpoint of fundamental studies, and is eagerly anticipated in industry because of their potential applications to environmental and quality control monitoring systems. If we can develop organic fluorescent sensors for water, the fluorescence spectroscopic technique utilizing the fluorescent sensors allows the visualization as well as detection and quantification of water content in samples using a highly sensitive and quick flow analysis based on the changes in wavelength, intensity and lifetime of photoluminescence depending on the water content. In this work, we have developed fluorescent sensors for detection, quantification and visualization of water content in solvents, and polymer films doped with fluorescent sensors for water as one of the most promising and convenient functional materials for visualizing moisture and water droplets.

Free Research Field

機能性色素化学

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した蛍光性水センサーの学術的意義は、蛍光発光特性を利用した微量水分から高水分領域の水分検出法という新しい方法論(JISやISOなどの国家・国際規格化)を提供し、水分子を検出・定量・可視化するエポックメイキングな蛍光分析法(概念)を世界に先駆けて具現化するところにある。さらに、本研究の社会的意義は、有機溶媒、ガス、食品および工業製品中の水分検出剤としての用途の他、蛍光性水センサーをポリマー化あるいは分散(固定化)させたフィルム(基板)等を作製し、Society 5.0やSDGsに資する機能性色素材料群に発展(土木・建築・医療・医薬・衛生材料として社会実装)させるところにある。