Web of Science: 29 cites, Scopus: 31 cites, Google Scholar: cites,
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)

Data: 2019
Resum: 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.
Ajuts: Ministerio de Economía y Competitividad MAT2015-70615-R
Ministerio de Economía y Competitividad CTQ2015-65439-R
Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-0465
Ministerio de Economía y Competitividad SEV-2017-0706
Drets: Tots els drets reservats.
Llengua: Anglès
Document: Article ; recerca ; Versió acceptada per publicar
Matèria: Reverse/negative photochromism ; Spiropyrans ; Merocyanine forms ; Microcapsules ; Rewritable devices
Publicat a: ACS applied materials & interfaces, Vol. 11, Issue 12 (March 2019) , p. 11884-11892, ISSN 1944-8252

DOI: 10.1021/acsami.8b22335

12 p, 1.0 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2020-02-06, darrera modificació el 2021-09-26

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