Department of Chemistry, National Taiwan University , Taipei 10617, Taiwan.
Org Lett. 2014 Apr 18;16(8):2114-7. doi: 10.1021/ol5005214. Epub 2014 Apr 10.
Pure 2-iodo-9,9'-spirobifluorene was synthesized by an efficient method without troublesome iodination of 9,9-spirobifluorene (SP) or the Sandmeyer reaction of 2-amino-9,9'-spirobifluorene. A series of main group element-bridged bis-9,9'-spirobifluorene derivatives were synthesized via coupling reactions of 2-iodo-9,9'-spirobifluorene and main group element-containing precursors. These heteroatom-bridged bis-spirobifluorenes show large triplet state energy gaps, high glass transition temperatures, and varied charge-transporting properties advantageous to the host materials for blue phosphorescence organic light-emitting diodes.
纯 2-碘-9,9'-螺二芴通过一种高效的方法合成，无需繁琐的 9,9-螺二芴（SP）碘化或 2-氨基-9,9'-螺二芴的桑德迈尔反应。通过 2-碘-9,9'-螺二芴与含主族元素的前体的偶联反应，合成了一系列主族元素桥联的双-9,9'-螺二芴衍生物。这些杂原子桥联的双螺二芴具有大的三重态能量间隙、高玻璃化转变温度和不同的电荷输运性质，有利于作为主体材料的蓝色磷光有机发光二极管。
