Titanium-Oxide Host Clusters with Exchangeable Guests

Guanyun Zhang; Wenyun Li; Caiyun Liu; Jiong Jia; Chen Ho Tung; Yifeng Wang

doi:10.1021/jacs.7b10565

Titanium-Oxide Host Clusters with Exchangeable Guests

Guanyun Zhang, Wenyun Li, Caiyun Liu, Jiong Jia, Chen Ho Tung, Yifeng Wang

Research output: Contribution to journal › Article › peer-review

81 Scopus citations

Abstract

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 ¹³³Cs 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.

Original language	English
Pages (from-to)	66-69
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	140
Issue number	1
DOIs	https://doi.org/10.1021/jacs.7b10565
State	Published - 10 Jan 2018
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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title = "Titanium-Oxide Host Clusters with Exchangeable Guests",

abstract = "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 133Cs 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.",

author = "Guanyun Zhang and Wenyun Li and Caiyun Liu and Jiong Jia and Tung, {Chen Ho} and Yifeng Wang",

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T1 - Titanium-Oxide Host Clusters with Exchangeable Guests

AU - Zhang, Guanyun

AU - Li, Wenyun

AU - Liu, Caiyun

AU - Jia, Jiong

AU - Tung, Chen Ho

AU - Wang, Yifeng

PY - 2018/1/10

Y1 - 2018/1/10

N2 - 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 133Cs 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.

AB - 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 133Cs 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.

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EP - 69

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 1

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Titanium-Oxide Host Clusters with Exchangeable Guests

Abstract

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