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The vapour phase detection of explosive markers and derivatives using two fluorescent metal–organic frameworks

DOI: 10.1039/C4TA05638H DOI Help

Authors: Monika Jurcic (University College London) , William J. Peveler (University College London) , Christopher N. Savory (University College London) , David O. Scanlon (University College London; Diamond Light Source) , Anthony J. Kenyon (University College London) , Ivan Parkin (University College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Materials Chemistry A , VOL 3 (12) , PAGES 6351 - 6359

State: Published (Approved)
Published: February 2015

Abstract: Two fluorescent metal–organic frameworks (MOFs) [Zn(dcbpy)(DMF)]·DMF and [Dy(dcbpy)(DMF)2(NO3)] (dcbpy = 2,2′-bipyridine-4,4′-dicarboxylate) were synthesised solvothermally and structurally characterised. Uniform shape and sized microcrystals of [Zn(dcbpy)(DMF)]·DMF were also produced using microwave synthesis. The frameworks give organic linker-based fluorescence emission and demonstrate very different detection capabilities towards the explosive taggant 2,3-dimethyl-2,3-dinitrobutane (DMNB) and trinitrotoluene (TNT) derivatives; 2,4-dinitrotoulene (2,4-DNT), nitrobenzene (NB) and para-nitrotoluene (p-NT). These differences are attributed to the variation in the overall framework architecture between the two MOFs. This paper reiterates the key importance of MOF porosity in sensing applications, and highlights the value of uniform microcrystals to sensitivity.

Subject Areas: Materials, Energy


Technical Areas: