| Full text | |
| Author(s): |
Simao Albano, Luiz Gustavo
[1]
;
Paulin, Joao Vitor
[1]
;
Trino, Luciana Daniele
[1]
;
Fernandes, Silvia Leticia
[2]
;
de Oliveira Graeff, Carlos Frederico
[1]
Total Authors: 5
|
| Affiliation: | [1] Sao Paulo State Univ UNESP, Sch Sci, Dept Phys, BR-17033360 Bauru - Brazil
[2] Fed Univ Sao Carlos UFSCar, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Journal of Applied Polymer Science; v. 136, n. 30 AUG 10 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
Melanin is a biopigment in many organisms with interesting intrinsic properties suitable for emerging and sustainable technologies. In this work, we report the fabrication of transparent ultraviolet (UV)-protective thin films based on synthetic melanin in poly(vinyl alcohol) (PVA) matrixes. Melanin was synthesized through the auto-oxidation of l-3,4-dihydroxyphenylalanine (l-DOPA) under oxygen pressure, resulting in excellent solubility in water. A thin film with a composition of 3 wt % melanin (synthesized at 6 atm oxygen pressure) and silver nanowires (AgNWs) deposited on the surface has good transparency in visible light and 100% UV irradiation photoprotection. Encapsulated PVA-melanin/AgNW films dipped in water for 7 days retained 98% of their UV irradiation photoprotection. Moreover, using a transparent conductive oxide substrate, this UV-protective system can be simultaneously used as a transparent capacitor. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47805. (AU) | |
| FAPESP's process: | 17/11072-3 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Silvia Leticia Fernandes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/23000-1 - Vertical organic field-effect transistor using dyes of natural origin as active layer |
| Grantee: | João Vitor Paulin |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 14/01713-3 - Functionalization and adsorption studies on thin oxide films |
| Grantee: | Luciana Daniele Trino Albano |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/09963-6 - Construction and characterization of vertical organic field effect transistors by using nanostructured materials as intermediate electrode |
| Grantee: | Luíz Gustavo Simão Albano |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |