Optical storage in azobenzene-containing epoxy polymers processed as Langmuir Blodgett films
| Autor: | Patricia Angelica Oyanguren, Felippe José Pavinatto, Rafaela C. Sanfelice, Raquel Fernández, Maria Jose Galante, Iñaki Mondragon, Osvaldo N. Oliveira |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Benzylamines
Materials science Diglycidyl ether Recubrimientos y Películas Photoisomerization Optical Phenomena Toluidines Polymers Surface Properties Físico-Química Ciencia de los Polímeros Electroquímica Bioengineering INGENIERÍAS Y TECNOLOGÍAS Langmuir–Blodgett film Biomaterials chemistry.chemical_compound LB FILMS Ingeniería de los Materiales Polymer chemistry Pressure AZOCOPOLYMERS Benzhydryl Compounds chemistry.chemical_classification Spin coating Birefringence Lasers Ciencias Químicas Membranes Artificial Epoxy Polymer OPTICAL STRONGE MATERIAIS ÓPTICOS Ingeniería Química SPIN COATING Chemical engineering Azobenzene chemistry Mechanics of Materials visual_art Otras Ingeniería Química visual_art.visual_art_medium Anisotropy Epoxy Compounds Spectrophotometry Ultraviolet Spin Labels EPOXY Azo Compounds CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | In this study, azocopolymers containing different main-chain segments have been synthesized with diglycidyl ether of bisphenol A (DGEBA, DER 332, n = 0.03) and the azochromophore Disperse Orange 3 (DO3) cured with two monoamines, viz. benzylamine (BA) and m-toluidine (MT). The photoinduced birefringence was investigated in films produced with these azopolymers using the spin coating (SC) and Langmuir Blodgett (LB) techniques. In the LB films, birefringence increased with the content of azochromophore and the film thickness, as expected. The nanostructured nature of the LB films led to an enhanced birefringence and faster dynamics in the writing process, compared to the SC films. In summary, the combination of azocopolymers and the LB method may allow materials with tuned properties for various optical applications, including in biological systems were photoisomerization may be used to trigger actions such as drug delivery. Fil: Fernández, Raquel. Universidad del Pais Vasco; España Fil: Mondragon, Iñaki. Universidad del Pais Vasco; España Fil: Sanfelice, Rafaela. Universidade de Sao Paulo; Brasil Fil: Pavinatto, Felippe J.. Universidade de Sao Paulo; Brasil Fil: Oliveira, Osvaldo N. Jr.. Universidade de Sao Paulo; Brasil Fil: Oyanguren, Patricia Angelica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina Fil: Galante, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina |
| Databáze: | OpenAIRE |
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