Simple approach to regulate the spectra of novel kinds of polyazomethines containing bulky triphenylamine: Electrochemistry, electrochromism and photophysical responsive to environment

Niu, Haijun; Cai, Jiwei; Zhao, Ping; Bai, Xuduo; Wang, Wen

doi:10.1016/j.dyepig.2012.08.003

Cited by 41 publications

(21 citation statements)

References 37 publications

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“…Information about the HOMO-LUMO levels of various polyazomethines can be found in the following papers [56][57][58][59][60]. Unfortunately, only in two of these papers did the authors investigate the electrochemical behaviour of PAZs with LC properties [33,39].…”

Section: Homo-lumo Levelsmentioning

confidence: 96%

An overview of LC polyazomethines with aliphatic–aromatic moieties: Thermal, optical, electrical and photovoltaic properties

Iwan

2015

Renewable and Sustainable Energy Reviews

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Section: Homo-lumo Levelsmentioning

confidence: 96%

An overview of LC polyazomethines with aliphatic–aromatic moieties: Thermal, optical, electrical and photovoltaic properties

Iwan

2015

Renewable and Sustainable Energy Reviews

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“…From about 2005, liou and his group have carried out deeply investigations on a series of TPA-based high-performance polymers including polyimides, polyamides [27][28][29][30][31]. They found that the polymer with TPA cores exhibited stable electrochromic characteristic, and the incorporation of electron-donating substituents at the para positions of TPA afforded stable radical cations [32]. Because the TPA is easy to be oxidized in the nitrogen center and has the excellent ability to transport carriers via the radical cation species [33].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electrochromic properties of epoxy materials containing triphenylamine units

et al. 2015

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A series of novel aromatic epoxy resins are prepared from the epichlorohydrin (ECH) and di(4-hydroxybenzylideneamino) triphenylamine (DHB-TPA) monomers, which are synthesized from different triphenylamine (TPA)-containing diamines and phydroxybenzaldehyde. FT-IR, 1 H NMR and UV-Vis absorption spectra are employed to characterize the chemical structures of the polymers. All the polymers are amorphous, soluble in a variety of common organic solvents. The thermal properties of the polymers are investigated by thermogravimetric analysis (TGA) indicating good thermal stabilities compared with conventional epoxy resins on behalf of the introduction of aromatic TPA groups. All the polymers exhibit excellent reversibility of electrochromic characteristics by continuous cyclic scans between 0 and 2.0 V with the color changing from green to blue. The polymers also display photoelectrical response. The above properties prove that the series of polymers exhibit high thermal stability, excellent reversibility of electrochromic characteristics and photoelectric behaviours, which can be prospective candidates as electrochromic materials and photoelectrical conversion materials.

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“…Liou and Hsiao realized that introducing electron donor group at the para‐position of phenyl group of the TPA unit could stabilize TPA cationic radicals, improve the electrochemical and electrochromic stability, and decrease the oxidation potential. Our group also obtained TPA‐containing polymers such as polyimides, polyurethanes, polyazomethines, and epoxy resins, etc . The relationship between the polymer structures and the photoelectron, electrochemical, and electrochromic properties was studied thoroughly.…”

Section: Introductionmentioning

confidence: 99%

Color combination of polysiloxane polymer by introducing two different triphenylamine based pendent groups for electrochromism

Hao

Wang

Niu

et al. 2018

J of Applied Polymer Sci

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A novel triphenylamine (TPA)‐containing polysiloxane (PTPASi) named P(PT‐TB‐TPA)Si has been synthesized through hydrosilylation method by the reaction of poly(methylhydrosiloxane) (PMHS) with two different TPA‐based alkenes (TPAA) simultaneously for electrochromic application. The thermal stability and cycling stability of the P(PT‐TB‐TPA)Si were enhanced by grafting TPA onto polysiloxane since the force of adhesion between the P(PT‐TB‐TPA)Si film and the ITO substrate can be improved. The morphology of the polymer after electro‐oxidation was investigated and no significant change was observed revealing good stability. Otherwise, the effect of two different TPA‐based alkenes which were introduced into one polymer through covalent bond on cyclic voltammetry and electrochromic spectra was studied. The color of the polymer changed from colorless to red then to deep purple which obeys the color mixing theory and reveals multielectrochromic property. In addition, the potential switching property of the P(PT‐TB‐TPA)Si at the temperature of 150 °C has been investigated. The high thermal stability makes the polymer potential for relatively high temperature and/or long‐term cycling application. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46522.

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Simple approach to regulate the spectra of novel kinds of polyazomethines containing bulky triphenylamine: Electrochemistry, electrochromism and photophysical responsive to environment

Cited by 41 publications

References 37 publications

An overview of LC polyazomethines with aliphatic–aromatic moieties: Thermal, optical, electrical and photovoltaic properties

An overview of LC polyazomethines with aliphatic–aromatic moieties: Thermal, optical, electrical and photovoltaic properties

Synthesis and electrochromic properties of epoxy materials containing triphenylamine units

Color combination of polysiloxane polymer by introducing two different triphenylamine based pendent groups for electrochromism

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