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聚集诱导发光(AIE)已经成为光物理和发光材料领域的研究热点.设计与合成新的AIE核心分子是该领域进一步发展的基础.在我们发展的、新的AIE核心分子四苯基吡嗪(TPP)的基础上,通过引入给电子的噻吩基团,设计合成了三个TPP的衍生物TPP-T、TPP-2T和T-TPP-T,并详细研究了三个分子的构效关系.结果表明三个分子均具有聚集荧光增强(AEE)效应,其粉末的最强发射峰分别位于418,437和436 nm处,属于蓝紫光和深蓝光发射,绝对荧光量子产率分别为26.8%,29.%和30.9%.结合其优异的热稳定性,这些TPP衍生物有望用于有机发光二极管(OLED)器件中的发光层.
Aggregation-induced luminescence (AIE) has become a hotspot in the field of photophysics and luminescent materials.Design and synthesis of new AIE core molecules is the basis of further development in this field.In our development, the new AIE core molecule tetraphenylpyrazine TPP), three TPP derivatives TPP-T, TPP-2T and T-TPP-T were designed and synthesized by introducing electron-donating thiophene groups. The structure-activity relationship of the three molecules was studied in detail. The results showed that all three molecules have the effect of aggregated fluorescence enhancement (AEE). The strongest emission peaks of the three molecules are located at 418, 437 and 436 nm, respectively, belonging to blue-violet and blue-light emission. The absolute fluorescence quantum yields are 26.8% and 29%, respectively. % And 30.9% These TPP derivatives are expected to be used in the light emitting layer of organic light emitting diode (OLED) devices in combination with their excellent thermal stability.