Pyrazino[2.3-<i>g</i>]quinoxaline-Bridged Indole-Based Building Blocks: Design, Synthesis, Anion-Binding Properties, and Phosphate-Directed Assembly in the Solid State
作者:Ting Wang、Xiu-Ping Yan
DOI:10.1002/chem.200903188
日期:2010.4.19
multidimensional networks by self‐assembly in the solid state. The observations showed a well‐characterized phosphate‐directed assembly of multidimensional metal‐free coordination polymers in the solid state, in which the formed phosphate aggregates, including dimer encapsulated in an indole‐mediated hydrogen‐bonded pocket and an infinite chain, behaved as anionic templates to direct the self‐assembly. However
探索阴离子模板以指导复杂的超分子组装的策略已引起关注。此处,一系列新的阴离子受体1 - 3的含两个基于吲哚结合位点桥接通过连接垫片吡嗪并[2.3-克]喹喔啉(PQ)已经被设计合理,从前体制备2,3- diindol -3'-基喹喔啉(DIQ)和5,6-二氢二indolo [3,2- a:2',3'- c ]吩嗪(DIPZ)。X射线分析表明,在1和2结构中,氢键和π–π堆积相互作用形成了自连接网络和二聚体堆积, 分别。所有三个受体均表现出来自扩展的π系统的一系列突出的吸收带。基于吲哚膨胀受体被发现强烈和选择性结合˚F -,ACO - ,和H 2 PO 4 -的测试阴离子(F间- ,氯- ,溴-,ACO -,H 2 PO 4 -,HSO 4 -,NO 3 -,和C10 4 -),并用作肉眼检测DMSO中氟离子的有效比色传感器。这些量身定制的构建基块捕获了位于远距离结合位点的两个阴离子,并采用了