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An unusual (4,4)-connected 3D porous cadmium metal–organic framework as a luminescent sensor for detection of nitrobenzene

Author:
Zhao, Shan, Lv, Xiu-Xiu, Shi, Lu-Lu, Li, Bao-Long, Wu, Bing
Source:
RSC advances 2016 v.6 no.61 pp. 56035-56041
ISSN:
2046-2069
Subject:
cadmium, coordination polymers, luminescence, nitrobenzenes, solvents
Abstract:
The metal–organic framework {[Cd₂(obtz)₂(btec)(H₂O)₂]·3.5H₂O}ₙ (1) was synthesized and characterized (obtz = 1,2-bis(1,2,4-triazole-1-ylmethyl)benzene, btec = 1,2,4,5-benzenetetracarboxylate). 1 shows an unusual (4,4)-connected 3D porous network with the Schläfli symbol of (6²·8 × 10³)₂(6³ × 10³). 1 exhibits a strong blue emission band maxima at 421 nm and a shoulder peak at 464 nm in the solid state. The luminescent properties of 1 dispersed in various kinds of solvents were investigated in detail. The high quenching efficiency of 1 is up to 98.2% at 160 ppm NBZ. 1 displays highly selectivity, sensitivity and recyclability in the detection of nitrobenzene.
Agid:
6407117