Design, Synthesis, and Characterization of Functionalized Silepins: High Quantum Yield Blue Emitters
作者:Lauren G. Mercier、Shunsuke Furukawa、Warren E. Piers、Atsushi Wakamiya、Shigehiro Yamaguchi、Masood Parvez、Ross W. Harrington、William Clegg
DOI:10.1021/om2000597
日期:2011.3.28
The synthesis of a family of 1,1-dimethyldibenzo[b,f]silepin derivatives, substituted with donor groups of various donor strength and conjugation length in the positions meta or para to the silepin silicon, is presented. The compounds were characterized by NMR, UV−vis, and fluorescence spectroscopy, as well as with cyclic voltammetry and DFT computations. One of the meta series was characterized by
提出了合成1,1-二甲基二苯并[ b,f ] silepin衍生物家族的方法,该衍生物在silepin硅的间位或对位上被具有各种施主强度和共轭长度的各种施主基团取代。通过NMR,UV-vis和荧光光谱以及循环伏安法和DFT计算来表征化合物。其中的元系列的特点是X射线晶体学。所有化合物显示在发病的吸收和发射最大值红移相对于亲本1,1- dimethyldibenzo [ b,˚F ] silepin,但都表现出蓝色荧光量子产率范围从0.46至0.93的元对数导数为0.09到0.46 。这些数据表明,对于元系列,主要吸收π-π*字符,而在对系列中,为坚决给予基团,过渡低洼π轨道到LUMO + 1轨道,其中有来自捐助C-Si-Cσ*轨道的性质是电荷转移。可以通过用BBr 3进行金属转移将苯基取代的衍生物转变为硼异戊二烯,但是制备其他供体基团的硼异戊二烯需要采取其他策略。