Titanium-Oxide Host Clusters with Exchangeable Guests

被引：86

作者：

Zhang, Guanyun ^{[1
]}

Li, Wenyun ^{[1
]}

Liu, Caiyun ^{[1
]}

Jia, Jiong ^{[1
]}

Tung, Chen-Ho ^{[1
]}

Wang, Yifeng ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Sci, Jinan 250100, Shandong, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2018年 / 140卷 / 01期

关键词：

METAL-ORGANIC FRAMEWORKS; PHOTOCHEMISTRY; ENCAPSULATION; COMPLEXES; CAGES;

D O I：

10.1021/jacs.7b10565

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel family of water-soluble, polyoxocationic titanium-oxide host-guest clusters are reported herein. They exhibit an unprecedented hexagonal prismatic core structure for hosting univalent cationic guests like K+, Rb+, Cs+ and H3O+. Guest exchange has been studied using Cs-133 NMR, showing the flexible pore of a host permits passage of a comparatively larger cation and giving an equilibrium constant of ca. 13 for displacing Rb+ by Cs+. Attractive ion-dipole interaction, depending on host?guest size complementarity, plays a dominant role for the preferential encapsulation of larger alkali-metal cationic guests.

引用

页码：66 / 69

页数：4

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