Direct Observation of Molecular-Level Template Action Leading to Self-Assembly of a Porous Framework

被引：106

作者：

Bajpe, Sneha R. ^{[1
]}

Kirschhock, Christine E. A. ^{[1
]}

Aerts, Alexander ^{[1
]}

Breynaert, Eric ^{[1
]}

Absillis, Gregory ^{[2
]}

Parac-Vogt, Tatjana N. ^{[2
]}

Giebeler, Lars ^{[1
]}

Martens, Johan A. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Ctr Catalysis & Surface Sci, Dept Microbial & Mol Syst, B-3001 Louvain, Belgium

[2] Katholieke Univ Leuven, Dept Chem, B-3001 Louvain, Belgium

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2010年 / 16卷 / 13期

关键词：

keggin heteropolyacids; NMR spectroscopy; polyoxometalates; metal-organic frameworks; template synthesis; METAL-ORGANIC FRAMEWORK; CHEMISTRY; DESIGN; GUESTS;

D O I：

10.1002/chem.200903239

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The molecular steps involved in the self-assembly of Cu-3(BTC)(2) (BTC = 1,3,5-benzenetricarboxylic acid) metal organic frameworks that enclose Keggin-type H3PW12O40 heteropolyacid molecules were unraveled by using solution O-17, P-31, and W-183 NMR spectroscopy, small-angle X-ray scattering, near-IR spectroscopy, and dynamic light scattering. In aqueous solution, complexation of Cu2+ ions with Keggin-type heteropolyacids was observed. Cu2+ ions are arranged around the Keggin structure so that linking through benzenetricarboxylate groups results in the formation of the Cu-3(BTC)(2) MOF structure HKUST-1. This is a unique instance in which a templating mechanism that relies on specific molecular-level matching and leads to explicit nanoscale building units can be observed in situ during formation of the synthetic nanoporous material.

引用

页码：3926 / 3932

页数：7

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