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A Boron Difluoride Hydrazone (BODIHY) Polymer Exhibits Aggregation‐Induced Emission
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-12-04 , DOI: 10.1002/marc.202000553 Daniela Cappello 1 , Alexander E R Watson 1 , Joe B Gilroy 1
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-12-04 , DOI: 10.1002/marc.202000553 Daniela Cappello 1 , Alexander E R Watson 1 , Joe B Gilroy 1
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Polymers that exhibit aggregation‐induced emission (AIE) find use, for example, as cell‐imaging agents and as fluorometric sensors due to their unique optical properties. However, the structural diversity of AIE‐active polymers has not necessarily advanced at the same rate as their applications. In this work, ring‐opening metathesis polymerization is used to synthesize the first example of a polymer (Mn = 61,600 g mol−1, Đ = 1.32) containing boron difluoride hydrazone (BODIHY) heterocycles in its repeating unit. The BODIHY monomer and polymer described absorb and emit in the visible region in solution (λabs = 428 and 429 nm, λem = 528 and 526 nm) and as thin films (λabs = 443 and 440 nm, λem = 535 and 534 nm). Monomer (ΦFilm = 10%) and polymer (ΦFilm = 6%) exhibit enhanced emission as thin films compared to solution (ΦSoln ≤ 1%) as well as AIE upon the addition of water to DMF solutions as a result of restriction of intramolecular motion. Enhancement factors for the monomer and polymer are determined to be 58 and 15, respectively. The title BODIHY polymer exhibited an earlier onset of AIE and enhanced sensitivity to solution viscosity when compared to the parent monomer.
中文翻译：
二氟化硼Hy（BODIHY）聚合物表现出聚集诱导的排放
表现出聚集诱导发射（AIE）的聚合物因其独特的光学特性而被用作例如细胞成像剂和荧光传感器。但是，AIE活性聚合物的结构多样性不一定以与其应用相同的速度发展。在这项工作中，开环复分解聚合用于合成聚合物的第一示例（M Ñ =61600克摩尔-1，Đ = 1.32）含二氟化硼腙（BODIHY）杂环在其重复单元。的BODIHY单体和聚合物在溶液中描述吸收和发射可见区域（λ ABS = 428和429纳米，λ EM = 528和526纳米）和薄膜（λ ABS = 443和440 nm，λem = 535和534 nm）。单体（Φ电影 = 10％）和聚合物（Φ电影 = 6％）表现出增强的作为薄膜发射相比溶液（Φ SOLN ≤1％）以及AIE当加入水至DMF溶液作为限制的结果分子内运动。单体和聚合物的增强因子分别确定为58和15。与母体单体相比，标题BODIHY聚合物表现出更早的AIE发生和对溶液粘度的增强的敏感性。
更新日期：2020-12-04
中文翻译：
二氟化硼Hy（BODIHY）聚合物表现出聚集诱导的排放
表现出聚集诱导发射（AIE）的聚合物因其独特的光学特性而被用作例如细胞成像剂和荧光传感器。但是，AIE活性聚合物的结构多样性不一定以与其应用相同的速度发展。在这项工作中，开环复分解聚合用于合成聚合物的第一示例（M Ñ =61600克摩尔-1，Đ = 1.32）含二氟化硼腙（BODIHY）杂环在其重复单元。的BODIHY单体和聚合物在溶液中描述吸收和发射可见区域（λ ABS = 428和429纳米，λ EM = 528和526纳米）和薄膜（λ ABS = 443和440 nm，λem = 535和534 nm）。单体（Φ电影 = 10％）和聚合物（Φ电影 = 6％）表现出增强的作为薄膜发射相比溶液（Φ SOLN ≤1％）以及AIE当加入水至DMF溶液作为限制的结果分子内运动。单体和聚合物的增强因子分别确定为58和15。与母体单体相比，标题BODIHY聚合物表现出更早的AIE发生和对溶液粘度的增强的敏感性。
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