Smart composite films of nanometric thickness based on copper-iodine coordination polymers. Toward sensors

Conesa-Egea, J. ; Nogal, N. ; Martínez, J.I. ; Fernández-Moreira, V. ; Rodríguez-Mendoza, U.R. ; González-Platas, J. ; Gómez-García, C.J. ; Delgado, S. ; Zamora, F. ; Amo-Ochoa, P.

Resumen: One-pot reactions between CuI and methyl or methyl 2-amino-isonicotinate give rise to the formation of two coordination polymers (CPs) based on double zig-zag Cu2I2 chains. The presence of a NH2 group in the isonicotinate ligand produces different supramolecular interactions affecting the Cu-Cu distances and symmetry of the Cu2I2 chains. These structural variations significantly modulate their physical properties. Thus, both CPs are semiconductors and also show reversible thermo/mechanoluminescence. X-ray diffraction studies carried out under different temperature and pressure conditions in combination with theoretical calculations have been used to rationalize the multi-stimuli-responsive properties. Importantly, a bottom-up procedure based on fast precipitation leads to nanofibers of both CPs. The dimensions of these nanofibres enable the preparation of thermo/mechanochromic film composites with polyvinylidene difluoride. These films are tens of nanometers in thickness while being centimeters in length, representing smaller thicknesses so far reported for thin-film composites. This nanomaterial integration of CPs could represent a source of alternative nanomaterials for opto-electronic device fabrication.

Idioma: Inglés

DOI: 10.1039/c8sc03085e

Año: 2018

Publicado en: CHEMICAL SCIENCE 9, 41 (2018), 8000-8010
ISSN: 2041-6520

Factor impacto JCR: 9.556 (2018)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 19 / 172 = 0.11 (2018) - Q1 - T1

Factor impacto SCIMAGO: 3.895 - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/610256/EU/Gas and Dust from the Stars to the Laboratory: Exploring the NanoCosmos/NANOCOSMOS
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2015-071534
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-75816-C2-1-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2010-20843-C02-01
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2016-75586-C4-4-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2016-75883-C2-2-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2016-77608-C3-1-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC-2015-17730

Tipo y forma: Article (Published version)