Yang Peng, Alsufyani Maryam, Emwas Abdul-Hamid, Chen Chaoqin, Khashab Niveen M
Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
Angew Chem Int Ed Engl. 2018 Oct 1;57(40):13046-13051. doi: 10.1002/anie.201806086. Epub 2018 Jul 30.
Complexes made by hosts that completely surround their guests provide a means to stabilize reactive chemical intermediates, transfer biologically active cargo to a diseased cell, and construct molecular-scale devices. By the virtue of inorganic host-guest self-assembly, nucleation processes in the cavity of a {P W }-archetype phosphotungstate has afforded a nanoscale 16-Al -32-oxo cluster and its Ga analogue that contain the largest number of Al /Ga ions yet found in polyoxometalate (POM) chemistry. Interestingly, the rich Lewis acid Al centers within the Lewis base POM support shows an exceptional proton conductivity of 4.5×10 S cm (85 °C, 70 % RH; RH: relative humidity), which is by far the highest conductivity reported among POM-based single-crystal proton conductors.
宿主完全包围客体所形成的配合物提供了一种稳定反应性化学中间体、将生物活性物质转运至病变细胞以及构建分子尺度装置的方法。借助无机主客体自组装，在{P W }型磷钨酸盐的空腔内发生的成核过程产生了一种纳米级的16-Al -32-氧簇及其镓类似物，它们包含多金属氧酸盐（POM）化学中迄今发现的数量最多的铝/镓离子。有趣的是，路易斯碱POM载体中丰富的路易斯酸性铝中心显示出4.5×10 S cm的异常高的质子电导率（85 °C，70 %相对湿度；RH：相对湿度），这是迄今为止基于POM的单晶质子导体中报道的最高电导率。
