Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 45, 2013
Previous Article Next Article

Chelation-driven fluorescence deactivation in three alkali earth metal MOFs containing 2,2′-dihydroxybiphenyl-4,4′-dicarboxylate

Author affiliations

Abstract

Three new metal–organic frameworks (MOFs) have been synthesised from alkali earth metal ions of increasing ionic radii (Mg, Ca and Sr) and 2,2′-dihydroxybiphenyl-4,4′-dicarboxylic acid (H4diol). The distinct coordination environments, framework topologies and the non-coordinated diol moieties accessed are a result of using differently sized metal ions for MOF synthesis which affects the ability of the diol moieties to chelate the metal. Detailed structural analysis of [Sr3(H2diol)3(DMF)5], [Ca3.5(Hdiol)(H2diol)2(DMF)5]·1.2DMF and [Mg(H2diol)(DMF)2]·DMF show distinctive variations in variable temperature expansion/contraction properties and porosity. In addition, [Sr3(H2diol)3(DMF)5] and [Ca3.5(Hdiol)(H2diol)2(DMF)5]·1.2DMF display a broad fluorescence emission (λmax = ~435 nm) under ultraviolet light due to the presence of non-coordinated biphenyl-diol moieties within the structures, while chelation of Mg by the diol pocket in [Mg(H2diol)(DMF)2]·DMF leads to quenching of the ligand fluorescence.

Graphical abstract: Chelation-driven fluorescence deactivation in three alkali earth metal MOFs containing 2,2′-dihydroxybiphenyl-4,4′-dicarboxylate

Back to tab navigation

Supplementary files

Article information


Submitted
28 Jun 2013
Accepted
02 Sep 2013
First published
04 Sep 2013

CrystEngComm, 2013,15, 9722-9728
Article type
Paper

Chelation-driven fluorescence deactivation in three alkali earth metal MOFs containing 2,2′-dihydroxybiphenyl-4,4′-dicarboxylate

D. Rankine, T. D. Keene, C. J. Sumby and C. J. Doonan, CrystEngComm, 2013, 15, 9722
DOI: 10.1039/C3CE41253A

Social activity

Search articles by author

Spotlight

Advertisements