Red emissive diarylboron diketonate crystals: aggregation-induced color change and amplified spontaneous emission

Red emissive diarylboron diketonate crystals: aggregation-induced color change and amplified spontaneous emission
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红色发射二芳基硼二酮晶体:聚集引起的颜色变化和放大的自发发射

DOI:
10.1039/c4tc02070g
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发表时间:
2015
影响因子:
6.4
通讯作者:
马於光
马於光
中科院分区:
材料科学2区
文献类型:
--
作者:
马於光

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通过1,3-二芳基-β-二酮与三苯硼烷或氟代双(五氟苯基)硼烷反应,合成了两种新的二芳基硼二酮化合物1和2。合成的含硼化合物在溶液中表现出强烈的蓝绿色或绿色发射,但在晶体中表现出红色荧光,显示出聚集诱导的颜色变化特性。值得注意的是,1和2的片状晶体在脉冲激光束照射时显示出明显变窄的发射,从而提供了基于四配位有机硼固体的放大自发发射的第一个例子。这一发现表明四配位硼物种在有机固体激光中的潜力,从而可能扩大含硼材料的应用领域。
Two novel diarylboron diketonates 1 and 2 were synthesized by the reaction of 1,3-diaryl-β-diketone with triphenylborane or fluorobis(pentafluorophenyl)borane. The synthesized boron-containing compounds exhibit intense greenish-blue or green emissions in solution but red fluorescence in crystals, showing an aggregation-induced colour change characteristic. Notably, the flake-like crystals of 1 and 2 show an evidently narrowed emission when irradiated by a pulsed laser beam and thus provide the first example of amplified spontaneous emission based on four-coordinate organoboron solids. This finding indicates the potential of four-coordinate boron species in organic solid lasing and thus may expand the application area of boron-containing materials.
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