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Issue 6, 2015
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Spin-crossover metal–organic frameworks: promising materials for designing gas sensors

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Abstract

We present a quantitative study of the sensing behavior of micro-patterned gratings based on the metal–organic framework type spin crossover complex Fe(bpac)[Pt(CN)4] (1) in the presence of vapors of various organic compounds. The gratings of 1 were fabricated by combining a sequential assembly technique and a photolithographic method. The guest absorption driven change of the spin state and the associated variation of the refractive index were in situ monitored by optical diffraction on a grating of 1. Our sensor is characterized by good reversibility, room temperature operation, a low limit of detection (∼30 ppm for molecules of iodobenzene) as well as a linear dynamic range of detection (from 300 to 1500 ppm). The possibility of selectively desorbing the analytes by thermal annealing confers also selectivity to the sensor.

Graphical abstract: Spin-crossover metal–organic frameworks: promising materials for designing gas sensors

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Publication details

The article was received on 27 Oct 2014, accepted on 02 Dec 2014 and first published on 02 Dec 2014


Article type: Paper
DOI: 10.1039/C4TC02441A
J. Mater. Chem. C, 2015,3, 1277-1285

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    Spin-crossover metal–organic frameworks: promising materials for designing gas sensors

    C. Bartual-Murgui, A. Akou, C. Thibault, G. Molnár, C. Vieu, L. Salmon and A. Bousseksou, J. Mater. Chem. C, 2015, 3, 1277
    DOI: 10.1039/C4TC02441A

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