期刊
DYES AND PIGMENTS
卷 166, 期 -, 页码 340-349出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2019.03.040
关键词
Aggregation-induced emission; Triphenylamine; Electrochromic; Electrofluorochromic; Photodetector
资金
- National Natural Science Foundation of China [51773053]
- Heilongjiang Province Foundation for Returners from Oversea [LC2018024]
- Reserve Talented Person of Harbin [2015RAXXJ015]
- Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [ES201701]
- Heilongjiang University Graduate Innovation Fund [YJSCX2018-06OHLJU]
Four novel multifunctional electrochromic materials (PTT, PDTT, PNT and PDNT) based on tetraphenylethylene (TPE) and triphenylamine (TPA) units by Stille coupling reaction were prepared. Electrochemical impedance spectroscopy (EIS) measurements found that four polymers had low resistance values which improved their electrochemical and electrochromic properties. In addition, the maximum coloration efficiency (CE; eta) value is 126 cm(2)/C at 1246 nm of PDTT, bleaching and coloring response times are 2.6 s and 1.6 s, respectively. There is no significant change of performance after a 100 cycle scanning. In addition to their excellent electrochromic properties, they also exhibit a strong aggregation-induced emission (ME) effect. Furthermore, the fluorescence color of PDNT changed from bright green to black when voltage was applied from 0.0 to 1.6 V. Four polymers responded rapidly to light and they maintained stability over a 1000 s cycle.
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