Ultraviolet-protective thin film based on PVA-melanin/rod-coated silver nanowires and its application as a transparent capacitor

被引：17
作者：
Simao Albano, Luiz Gustavo [1 ]
Paulin, Joao Vitor [1 ]
Trino, Luciana Daniele [1 ]
Fernandes, Silvia Leticia [2 ]
de Oliveira Graeff, Carlos Frederico [1 ]
机构：
[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
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2019年 / 136卷 / 30期
基金：
巴西圣保罗研究基金会;
关键词：
blends; films; nanoparticles; nanowires; and nanocrystals; optical and photovoltaic applications; surfaces and interfaces; ENHANCED THERMAL-STABILITY; UV-SHIELDING PROPERTIES; FIELD-EFFECT TRANSISTOR; POLY(VINYL ALCOHOL); LOW-VOLTAGE; BEHAVIOR; FREQUENCY; RADIATION;
D O I：
10.1002/app.47805
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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.
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页数：9
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