Room Temperature Phosphorescence in Solution from Thiophene-Bridged Triply Donor-Substituted Tristriazolotriazines.
Room Temperature Phosphorescence in Solution from Thiophene-Bridged Triply Donor-Substituted Tristriazolotriazines.
复制标题
噻吩桥三重供体取代的三三唑并三嗪溶液中的室温磷光。
DOI：
10.1002/chem.202203800
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Marchi Luciano H
中科院分区：
文献类型：
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作者：
Marchi Luciano H
大多数有机室温磷光 (RTP) 发射体在溶液中不显示其 RTP。在这里，我们在 D3A 型三三唑并三嗪 (TTT) 的供体和受体部分之间引入了含硫噻吩桥。噻吩夹杂物增加了与辐射 T1→S0 路径相关的自旋轨道耦合，允许在所有化合物的溶液中观察到 RTP，这可能是通过庞大的外围供体保护发射性 TTT-噻吩核心免受环境影响而得到的。
Most organic room‐temperature phosphorescence (RTP) emitters do not show their RTP in solution. Here, we incorporated sulfur‐containing thiophene bridges between the donor and acceptor moieties in D3A‐type tristriazolotriazines (TTTs). The thiophene inclusion increased the spin‐orbit coupling associated with the radiative T1→S0pathway, allowing RTP to be observed in solution for all compounds, likely assisted by protection of the emissive TTT‐thiophene core from the environment by the bulky peripheral donors.