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Evaporation-Directed Crack-Patterning of Metal-Organic Framework Colloidal Films and Their Application as Photonic Sensors

Abstract : A straightforward crack-patterning method is reported allowing the direct formation of periodic cracks in metal–organic framework (MOF) nanoparticle films during dip-coating deposition. The crack propagation and periodicity can be easily tailored by controlling the evaporation front and the withdrawal speed. Several MOF-patterned films can be fabricated on large surfaces and on several substrates (flat, curved or flexible) including the inner surface of a tube, not achievable by other lithographic techniques. We demonstrate that the periodic cracked arrays diffract light and, due to the MOF sorption properties, photonic vapor sensors are fabricated. A new concept of “in-tube”, MOF-based diffraction grating sensors is proposed with outstanding sensitivity that can be easily tuned “on-demand” as function of the desired detection range.
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https://hal.sorbonne-universite.fr/hal-01636928
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Submitted on : Friday, November 17, 2017 - 11:05:42 AM
Last modification on : Wednesday, October 14, 2020 - 4:15:21 AM
Long-term archiving on: : Sunday, February 18, 2018 - 1:49:05 PM

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Olivier Dalstein, Effrosyni Gkaniatsou, Clémence Sicard, Ozlem Sel, Hubert Perrot, et al.. Evaporation-Directed Crack-Patterning of Metal-Organic Framework Colloidal Films and Their Application as Photonic Sensors. Angewandte Chemie International Edition, Wiley-VCH Verlag, 2017, 56 (45), pp.14011 - 14015. ⟨10.1002/anie.201706745⟩. ⟨hal-01636928⟩

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