高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (8): 20260106.doi: 10.7503/cjcu20260106

• 有机化学 • 上一篇    下一篇

主客体掺杂下三联吡啶苯硼酸聚集态调控长寿命室温磷光

曾明涛, 史文静, 王军()   

  1. 贵州师范大学化学与材料科学学院,贵阳 550001
  • 收稿日期:2026-03-14 出版日期:2026-08-10 发布日期:2026-05-14
  • 通讯作者: 王军 E-mail:wjc@gznu.edu.cn
  • 作者简介:目前在贵州省思南县第八中学工作.
  • 基金资助:
    国家自然科学基金(22161012);贵州省科技厅面上基金(批准号: 黔科合基础MS[2026]445)

Modulation of Long-lived Room-temperature Phosphorecence via Aggregation-state Control of a Terpyridine-phenylboronic Acid in a Host-guest Doping System

ZENG Mingtao, SHI Wenjing, WANG Jun()   

  1. College of Chemistry and Material Science,Guizhou Normal University,Guiyang 550001,China
  • Received:2026-03-14 Online:2026-08-10 Published:2026-05-14
  • Contact: WANG Jun E-mail:wjc@gznu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22161012);the General Fund of the Department of Science and Technology of Guizhou Province, China(MS[2026]445)

摘要:

研究了4-(([2,2'∶6',2''-三联吡啶]-4'-基)苯基)硼酸(B-Tpy)在不同聚集状态下的光物理性能. 核磁共振氢谱(1H NMR)和荧光光谱分析结果表明, B-Tpy具有聚集诱导发光特性. 固态B-Tpy仅发射蓝色荧光 (401 nm), 荧光寿命和量子产率分别为2.89 ns和2.79%. 将B-Tpy与硼酸(BA)掺杂并经200 ℃热处理后, 所得复合材料展现出荧光和室温磷光(RTP)双态发射性质, 余辉长达24 s, RTP寿命为2.14 s. 理论计算结果表明, B-Tpy具有较大的自旋轨道耦合常数[ξ(S1T1)=6.58 cm-1], 有效促进了系间窜越过程, 从而实现了长寿命RTP发射. 本文研究结果为长寿命有机RTP磷光材料的设计提供了新思路.

关键词: 有机室温磷光, 聚集诱导发光, 主客体掺杂, 双态发射

Abstract:

The photophysical properties of 4-(([2,2′∶6′,2″-terpyridin]-4′-yl)phenyl)boronic acid(B-Tpy) under different aggregation states were investigated. 1H NMR titration and fluorescence spectroscopy were employed to confirm the aggregation-induced emission(AIE) characteristics. Solid-state B-Tpy exhibits blue fluorescence at 401 nm, with a lifetime of 2.89 ns and a quantum yield of 2.79%. Following the introduction of B-Tpy into boric acid(BA) and subsequent thermal treatment at 200 ℃, the resulting composite material exhibits dual emission of fluorescence and room-temperature phosphorescence(RTP), with an afterglow duration of up to 24 s. Quantitative calculations indicate that B-Tpy possesses a significant spin-orbit coupling constant[ξS1T1)=6.58 cm⁻1], which promotes intersystem crossing, thereby facilitating long-lived RTP emission. This study proposes a novel strategy for long-lived RTP materials.

Key words: Organic RTP, Aggregation-induced emission(AIE), Host-guest doping, Dual-state emission

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