Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science

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Photoactive and physical properties of an azobenzene-containing coordination framework

James Caddy , Thomas Faust , Ian Walton , Jordan Cox , Jason Benedict , Marcello Solomon , Peter Southon , Cameron Kepert , Deanna D'Alessandro


A new 3-dimensional coordination framework, [Zn4(tbazip)3(bpe)2(OH)2]·bpe·{solvent} (where bpe = 1,2-di(4-pyridyl)ethene) containing the novel photoactive ligand tbazip (tbazip = 5-((4-tert-butyl)phenylazo)isophthalic acid) has been synthesised and crystallographically characterised. The photoactivity of discrete tbazip was investigated and compared to its photoactivity while incorporated within the framework. The effect of isomerisation of the incorporated azobenzene on the chemical and physical properties of the framework were investigated using UV-vis and Raman spectroscopies. The framework is porous only to hydrogen gas at 77 K, but displayed an appreciable uptake for CO2 at 195 K.

CH17215  Accepted 17 June 2017

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