Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/154803
Title: | An unprecedented stimuli-controlled single-crystal reversible phase transition of a metal-organic framework and its application to a novel method of guest encapsulation |
Author: | Tan, Fangchang López Periago, Ana María Light, Mark E. Cirera Fernández, Jordi Ruiz Sabín, Eliseo Borras, Alejandro Teixidor, Francesc Viñas, Clara Domingo, Concepción Giner Planas, José |
Keywords: | Lligands Química organometàl·lica Materials porosos Carborans Ligands Organometallic chemistry Porous materials Carboranes |
Issue Date: | 19-Jul-2018 |
Publisher: | Wiley-VCH |
Abstract: | The flexibility and unexpected dynamic behavior of a third-generation metal- organic framework are described for the first time. The synthetic strategy is based on the flexibility and spherical shape of dipyridyl-based carborane linkers that act as pillars between rigid Co/BTB (BTB: 1,3,5-benzenetricarboxylate) layers, providing a 3D porous structure (1). A phase transition of the solid can be induced to generate a new, nonporous 2D structure (2) without any loss of the carborane linkers. The structural transformation is visualized by snapshots of the multistep single-crystal-to-single-crystal transformation by single-crystal and powder X-ray diffraction. Poor hydrogen bond acceptors such as MeOH, CHCl3 or supercritical CO2 induce such a 3D to 2D transformation. Remarkably, the transformation is reversible and the 2D phase 2 is further converted back into 1 by heating in dimethylformamide. The energy requirements involved in such processes are investigated using periodic density functional theory calculations. As a proof of concept for potential applications, encapsulation of C60 is achieved by trapping this molecule during the reversible 2D to 3D phase transition, whereas no adsorption is observed by straight solvent diffusion into the pores of the 3D phase. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1002/adma.201800726 |
It is part of: | Advanced Materials, 2018, vol. 30, num. 29, p. 1800726 |
URI: | http://hdl.handle.net/2445/154803 |
Related resource: | https://doi.org/10.1002/adma.201800726 |
ISSN: | 0935-9648 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
681810.pdf | 666.18 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.