Open menu

Nanotechnology General News

The latest news from academia, regulators
research labs and other things of interest

Posted: Feb 18, 2014

Soft nanoporous metal-organic framework materials

(Nanowerk News) Soft porous frameworks as the third-generation family provide an alternative platform and unique application features for inclusion and recognition of guest molecules by virtue of their versatile structure phase with variable pore sizes and functions.
Jie Zhang and her co-workers, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, China, have developed a method to construct a series of soft nanoporous metal–organic framework (MOF) materials by polycatenation of an isoreticular 1D ribbon of rings, and systematically functionalize the pore metrics ("Polycatenation-Driven Self-Assembly of Nanoporous Frameworks Based on a 1D Ribbon of Rings: Regular Structural Evolution, Interpenetration Transformation, and Photochemical Modification").
Soft Porous Frameworks
In a pre-synthetic process, the orientation of catenated ribbons can be fine-tuned by varying counter anions, thus allowing both the pore size and shape to be systematically adjusted. They can also interconvert into each other by means of anion exchange, leading to a transformation of the interpenetrating structures in different dimensional networks, which is unusual in porous frameworks.
In addition, the porous framework can be post-synthetically modified by a photoinduced [2+2] cycloaddition reaction. This leads to surface modification and structural transformation from low to high dimensions.
Such a post-modification process reinforces the pore architecture through a covalent locking effect and has a great impact on the adsorption properties.
Source: Wiley
If you liked this article, please give it a quick review on reddit or StumbleUpon. Thanks!
Check out these other trending stories on Nanowerk:

Subscribe to a free copy of one of our daily
Nanowerk Newsletter Email Digests
with a compilation of all of the day's news.