Highly efficient light-emitting materials enabled by immobilization of Pt(II) complexes on layered nanoparticles

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K05094
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 34010:Inorganic/coordination chemistry-related
• Research Institution: Kwansei Gakuin University (2022-2023); Hokkaido University (2021)
• Principal Investigator: YOSHIDA Masaki 関西学院大学, 生命環境学部, 講師 (20712293)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 錯体化学 / 発光材料 / 刺激応答性材料 / ナノ粒子

Outline of Final Research Achievements

The development of highly efficient luminescent materials is an important fundamental research for the development of next-generation energy-saving light-emitting devices. Pt(II) complexes are expected to be a promising luminescent materials because they show high luminescence by self-assembly, but the problem is that their luminescence decreases in solution. In this study, I aimed to solve this problem by immobilizing the Pt(II) complex on cationic nanoparticles. As a result, I succeeded in (1) maintaining the luminescent property of the Pt(II) complex even in water by supporting the complex on the nanoparticles. Furthermore, the luminescence color of the Pt(II) complex/nanoparticle composite changed significantly in response to humidity. These results are expected to provide important knowledge for the development of luminescent and optoelectronic materials based on molecular science.

Free Research Field

錯体化学

Academic Significance and Societal Importance of the Research Achievements

社会的意義：深刻化するエネルギー問題の観点から、高効率発光材料の開発は喫緊の課題である。溶液中で発光性が低下するという白金(II)錯体の課題をナノ粒子上への担持という簡便な操作で解決する本研究成果は、白金(II)錯体を実用的な発光材料へと昇華する重要な知見を与えるものと期待される。
学術的意義：白金(II)錯体の自己集積に基づく発光変化は光化学や分析化学、超分子化学など幅広い分野で注目を集めてきた。一方、集積の戦略的な設計には煩雑な分子修飾を含む試行錯誤を必要とする。ナノ粒子上において簡便に白金(II)錯体の動的な集積に成功した本研究は、これら幅広い分野にインパクトを与えるものと期待される。