2020 Fiscal Year Final Research Report
Development of Lifetime-controllable light emitting materials based on multicomponent molecular assembly
Project/Area Number |
17H04875
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Functional solid state chemistry
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Research Institution | Kyushu University |
Principal Investigator |
Ono Toshikazu 九州大学, 工学研究院, 准教授 (20643513)
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Project Period (FY) |
2017-04-01 – 2021-03-31
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Keywords | 多成分結晶 / 分子集合体 / 蛍光 / 燐光 / 重原子効果 / 項間交差 / ナフタレンジイミド / 光学センサ |
Outline of Final Research Achievements |
The creation of multicomponent crystals (or organic alloys) by mixing two or more organic molecules has attracted much attention because they exhibit unique optical, electrical, and magnetic properties different from those of crystalline materials composed of a single component. In this study, we have achieved the construction of a crystalline material consisting of up to five components based on our original molecular integration technology. By using the methodology, we have achieved to control the charge-transfer interaction/exciplex, energy transfer, and spin multiplicity inside the crystals, and have realized various applications such as (1) multicolor and white light-emitting materials, (2) room temperature phosphorescent materials, (3) optical vapor sensors, and (4) pressure sensors.
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Free Research Field |
有機合成化学、超分子化学、結晶工学、構造有機化学、錯体化学、光化学
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Academic Significance and Societal Importance of the Research Achievements |
有機化合物は、長方形、正方形、球形のような形状や、いびつな三次元構造を有するため、二種類、三種類以上の異なる分子を均一に混ぜ合わせ、整然と並べる多成分結晶の創製は、挑戦的な課題であった。本研究では、複数個の有機分子を組み合わせ、新しい機能を見出す結晶化技術を開発することにより、(1)多色、白色に発光する機能性色素、(2)室温下で強燐光発光を示す機能性色素、(3)有機化合物の蒸気を吸着して、見た目の色で見分けるセンサ材料、(4)圧力に応答して発光色変化を示す色素、など、前例のない、光学的特性を生み出す基本技術の開発を行った。学術界、産業界に与える影響は大きく、さらなる研究の進展が期待される。
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