Electrochemical polymerization of triphenylamine end-capped dendron: Electrochromic and electrofluorochromic switching behaviors 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry
年/卷/期
2018 / 823 /
页码
203-212
ISSN号
1572-6657
作者单位
Indian Assoc Cultivat Sci, Polymer Sci Unit, 2A & 2B Raja SC Mullick Rd, Kolkata 700032, India;Indian Assoc Cultivat Sci, Polymer Sci Unit, 2A & 2B Raja SC Mullick Rd, Kolkata 700032, India;Indian Assoc Cultivat Sci, Polymer Sci Unit, 2A & 2B Raja SC Mullick Rd, Kolkata 700032, India;
作者
Santra, Dines Chandra;Nad, Subhra;Malik, Sudip;
摘要
Triphenylamine unit containing two electroactive end-capped dendritic macromolecules Benz-3TPA and Benz-3CNTPA have been rationally designed and successfully synthesized with good yield. Their structures contain benzene moieties as part of the core. Both dendrons have formed the polymers (p-Benz-3TPA and p-Benz-3CNTPA) through the oxidative electrochemical polymerization and also are capable of showing simultaneous operation in electrochromic (EC) and electrofluorochromic (EFC) properties. These two polymer films have exhibited stable reversible multi-color electrochromic changes with high coloration efficiency and contrast ratio upon electro-oxidation. These electrochromic polymers have not only produced EC properties with high optical contrast (Delta T% = 65-71%) but also exhibited high contrast ratio (I-on/I-off = 179, I-on = fluorescence on (neutral state) and I-off = fluorescence off (oxidized state)) EFC properties at low working voltage. Both have still showed excellent electro-switching stability even after hundredth cycles. Solid state electrochromic devices (ECD) using both the polymers have been fabricated and its color and fluorescent state are simultaneously switched by an applied potential, making the polymer a unique candidate for electrochemical fluorescence and electrochromic applications in future.
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关键词/主题词
TPA dendrons;Electropolymerization;Electrochromic;Electroflurochromic and ECD devices;
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