Related Experiment Video
Updated: Jun 15, 2026
Synthesis and Characterization of Self-Assembled Metal-Organic Framework Monolayers Using Polymer-Coated Particles
Published on: June 14, 2024
Direct observation of molecular-level template action leading to self-assembly of a porous framework
Sneha R Bajpe1, Christine E A Kirschhock, Alexander Aerts
1Centre for Surface Science and Catalysis, Department of Microbial and Molecular Systems, K. U. Leuven, Kasteelpark Arenberg 23, Leuven B-3001, Belgium. Sneha.BajpeRohita@biw.kuleuven.be
Abstract:
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 H(3)PW(12)O(40) heteropolyacid molecules were unraveled by using solution (17)O, (31)P, and (183)W NMR spectroscopy, small-angle X-ray scattering, near-IR spectroscopy, and dynamic light scattering. In aqueous solution, complexation of Cu(2+) ions with Keggin-type heteropolyacids was observed. Cu(2+) 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.
