Thermal and light control of the chiral order of azopolymers
Del Barrio, J. ; Tejedor, R.M. (Universidad de Zaragoza) ; Oriol, L. (Universidad de Zaragoza)
Resumen: The control of the chiroptical properties of two azopolymers, which contain chiral terminal alkyl chains, by means of thermal and light irradiation processes has been studied. Both UV–vis and CD spectra of films and dichloromethane (DCM)/hexane solutions of the polymers have been registered and analyzed before and after different irradiation conditions: 488 nm circularly polarized light (CPL) and 365 nm unpolarized light. The chiroptical properties of the polymer containing chiral 1-methylheptyloxy terminal chains depended on the thermal history of the sample. As a result, the photocontrol of the chiral response in the bulk material by CPL irradiation has been evaluated on samples cooled from the isotropic state to room temperature at different rates. The chiroptical properties of these azopolymers show an intriguing combination of control from both the supramolecular and molecular chirality level as well as the thermal history of the sample and CPL irradiation.
Idioma: Inglés
DOI: 10.1016/j.eurpolymj.2011.11.018
Año: 2012
Publicado en: European Polymer Journal 48, 2 (2012), 384-390
ISSN: 0014-3057
Factor impacto JCR: 2.562 (2012)
Categ. JCR: POLYMER SCIENCE rank: 17 / 82 = 0.207 (2012) - Q1 - T1
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2008-06522-C02-01
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
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Idioma: Inglés
DOI: 10.1016/j.eurpolymj.2011.11.018
Año: 2012
Publicado en: European Polymer Journal 48, 2 (2012), 384-390
ISSN: 0014-3057
Factor impacto JCR: 2.562 (2012)
Categ. JCR: POLYMER SCIENCE rank: 17 / 82 = 0.207 (2012) - Q1 - T1
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2008-06522-C02-01
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2025-10-17-14:10:37)
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Record created 2025-01-27, last modified 2025-10-17