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首页> 外文期刊>ACS applied materials & interfaces >Ladder-Type Dye with Large Transition Dipole Moment for Solvatochromism and Microphase Visualization
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Ladder-Type Dye with Large Transition Dipole Moment for Solvatochromism and Microphase Visualization

机译：具有大转型偶极矩的梯形染料，用于溶色体和微相可视化

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摘要

A large transition dipole moment is usually pursued by strategies of twisted intramolecular charge transfer (TICT) or planar intramolecular charge transfer (PICT) to obtain obvious Stokes shifts and dramatic color changes with tuning of polarities. However, both strategies have their drawbacks and suffer from fluorescence quenching in solid states. Herein, a ladder-type molecule ISOAA-H with an intramolecular hydrogen bond is designed, which undergoes intramolecular charge transfer and proton shift to harvest a large transition dipole moment under light irradiation. Thanks to its out-of-plane side chains, the intermolecular pi-pi stacking of backbones is prohibited and solid emission is generated. ISOAA-H exhibits outstanding solvatochromic behavior with polarity changes of solvents or polymer matrixes and is successfully used to detect the microphase separation of polymer blends. These results indicate that a strategy combining the advantages of TICT and PICT is established for environment-sensitive dyes used in both solution and solid state.
机译：通常是通过扭曲的分子内电荷转移（TICT）或Planar分子内电荷转移（Pict）的策略来追求大的过渡偶极矩，以获得显而易见的斯托克斯的转变和戏剧性的颜色改变极性。然而，两种策略都具有它们的缺点并患有固体状态的荧光猝灭。这里，设计了具有分子内氢键的梯形分子IsOaA-H，其经历分子内电荷转移和质子移位以在光照射下收获大的过渡偶极力矩。由于其外平面外侧链，禁止骨干的分子间PI-PI堆叠，并产生固体发射。 ISOAA-H表现出具有溶剂或聚合物基质的极性变化的卓越的溶性溶性溶剂变性行为，并成功地用于检测聚合物共混物的微相分离。这些结果表明，为溶液和固态使用的环境敏感染料建立了组合TICT和PICT的优点的策略。

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  • 来源
    《ACS applied materials & interfaces》 |2019年第33期|共7页
  • 作者

    Cao Jian; Liu Qi-Ming; Bai Si-Jie; Wang Hua-Chun; Ren Xiancheng; Xu Yun-Xiang;

  • 作者单位

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    solvatochromism; transition dipole moment; ladder-type; solid emission; microphase visualization;

    机译：Solvatochromism;过渡偶极矩;梯形型;稳定发射;镜谱可视化;

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