Reversible thermochromic polymeric thin films made of ultrathin 2D crystals of coordination polymers based on copper(I)-thiophenolates
Troyano, Javier (Institut Català de Nanociència i Nanotecnologia)
Castillo, Óscar. (Universidad del País Vasco. Departamento de Química Inorgánica)
Martínez, José I. (Instituto de Ciencia de Materiales de Madrid)
Fernández-Moreira, Vanesa (Universidad de Zaragoza. Departamento de Química Inorgánica)
Ballesteros, Yolanda (Universidad Pontificia Comillas. Departamento de Ingeniería Mecánica)
Maspoch Comamala, Daniel (Institut Català de Nanociència i Nanotecnologia)
Zamora, Félix (Universidad Autónoma de Madrid. Departamento de Química Inorgánica)
Delgado, Salomé (Universidad Autónoma de Madrid. Departamento de Química Inorgánica)

Date:	2018
Abstract:	A one-pot reaction between Cu(BF)·xHO and 4-mercaptobenzoic acid in acetone or methanol gives rise to the formation of lamellar microcrystals of two Cu(I)-thiophenolate-based coordination polymers (CPs) with the formulas [CuCT] (1) (CT = 4-carboxy-thiophenolate) and [CuMCT] (2) (MCT = 4-methoxycarbonyl-thiophenolate). Both 1 and 2 show a reversible luminescent thermochromic behavior upon cooling, changing their color from pale yellow to green to orange in the case of 1, and from pale orange to green in the case of 2. It is shown that the lamellar character of these crystals, which exhibit micrometer lateral dimensions and sub-micrometer/nanometer thicknesses, allows processing them with an organic polymer such as polyvinylidene difluoride (PVDF) to form thermochromic 1@PVDF and 2@PVDF thin films. These thermal stimuli-responsive thin films are freestanding, free of macroscopic defects, and robust under mechanical bending stress, opening up the possibility to use them in, for example, 2D imaging sensor films.
Grants:	European Commission 615954 Ministerio de Economía y Competitividad MAT2016-75883-C2-1-P Ministerio de Economía y Competitividad MAT2016-77608-C3-1-P Ministerio de Economía y Competitividad CTQ2016-75816-C2-1-P Ministerio de Economía y Competitividad MAT2015-65354-C2-1-R Ministerio de Economía y Competitividad MAT2013-46753-C2-1-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-80
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Materials ; Lamella coordination polymers ; Luminescent materials ; Nanocomposite films ; Nanosheets
Published in:	Advanced functional materials, Vol. 28, issue 5 (Jan. 2018) , art. 1704040, ISSN 1616-3028

DOI: 10.1002/adfm.201704040

Post-print 19 p, 689.5 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles