Revealing the internal heavy chalcogen atom effect on the photophysics of the dibenzo[a,j]phenazine-cored donor-acceptor-donor triad
Revealing the internal heavy chalcogen atom effect on the photophysics of the dibenzo[a,j]phenazine-cored donor-acceptor-donor triad
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DOI：
10.1039/d1tc02635f
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发表时间：
2021-08-24
影响因子：
6.4
通讯作者：
Takeda, Youhei
中科院分区：
文献类型：
--
作者：
Goto, Shimpei;Nitta, Yuya;Takeda, Youhei
本文报道了一种以吩硒嗪为电子给体（Ds），二苯并[a，j]吩嗪（DBPHZ）为电子受体（A）的新型扭曲给体-受体-给体（D-A-D）多功能有机分子。所开发的硒掺杂D-A-D化合物具有多色多态性、明显的机械致变色发光、化学激发光致变色、热激活延迟荧光和室温磷光。通过与已开发的硫类似物和碲类似物的物理化学性质的比较，研究了内部重原子对D-A-D系统的物理化学性质的影响。
A new twisted donor-acceptor-donor (D-A-D) multi-photofunctional organic molecule comprising phenoselenazine as the electron donor (Ds) and dibenzo[a,j]phenazine (DBPHZ) as the electron acceptor (A) has been developed. The developed selenium-incorporated D-A-D compound features multi-color polymorphism, distinct mechanochromic luminescence, chemically-stimulated luminochromism, thermally-activated delayed fluorescence, and room-temperature phosphorescence. The internal heavy atom effect on the photophysical properties of the D-A-D system has been investigated through a comparison with the physicochemical properties of a previously developed sulfur analogue and a tellurium analogue.