Web of Science: 4 citas, Scopus: 7 citas, Google Scholar: citas,
Solid Materials with Tunable Reverse Photochromism
Julià López, Àlex (Institut Català de Nanociència i Nanotecnologia)
Ruiz Molina, Daniel (Institut Català de Nanociència i Nanotecnologia)
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Roscini, Claudio (Institut Català de Nanociència i Nanotecnologia)

Fecha: 2019
Resumen: Herein, we report a novel, straightforward, and universal strategy to achieve solid materials with highly tunable reverse photochromism. This was accomplished by means of commercially available spiropyran dyes, which can produce different types of stable merocyanine states (i. e. , nonprotonated and protonated forms) displaying distinct reverse photochromic properties (i. e. , colors and coloration rates). To finely control the concentration ratio of these species and, as such, tailor the optical performance of the photochromes, we exploited their differential interaction with surrounding media of distinctive nature (i. e. , nonvolatile protic and aprotic polar solvents). In this way, solutions displaying different photochromic responses were prepared for individual spiropyrans without requiring chemical derivatization, an approach that can be generalized to other spiro dyes with distinct acid-base properties. To transfer this behavior to the solid state, core-shell capsules of these solutions were prepared, which were then used as ink materials for the fabrication of flexible polymeric films with unprecedented tunability of their photochromic properties that can be employed as rewritable multicolored devices.
Nota: Número d'acord de subvenció MINECO/MAT2015-70615-R
Nota: Número d'acord de subvenció MINECO/CTQ2015-65439-R
Nota: Número d'acord de subvenció AGAUR/2017/SGR-0465
Nota: Número d'acord de subvenció MINECO/SEV-2017-0706
Derechos: Tots els drets reservats.
Lengua: Anglès.
Documento: article ; recerca ; acceptedVersion
Materia: Reverse/negative photochromism ; Spiropyrans ; Merocyanine forms ; Microcapsules ; Rewritable devices
Publicado en: ACS applied materials and interfaces, Vol. 11, Issue 12 (March 2019) , p. 11884-11892, ISSN 1944-8252

DOI: 10.1021/acsami.8b22335


Disponible a partir de: 2020-03-31
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El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Institut Català de Nanociència i Nanotecnologia (ICN2)
Artículos > Artículos de investigación
Artículos > Artículos publicados

 Registro creado el 2020-02-06, última modificación el 2020-03-09



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