Synthesis and electrochromic properties of novel poly(urethane–azomethine)s containing triphenylamine units

Hao, Liping; Wang, Wen; Sun, Yingjuan; Niu, Haijun

doi:10.1016/j.jelechem.2015.01.024

Cited by 15 publications

(9 citation statements)

References 38 publications

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“…The measured electrical conductivities of pelletized powder are in the range of 0.019–0.051 mScm −1 which are many folds higher than the conductivities of any undoped common polyazomethine. [ 5,18,31 ]…”

Section: Resultsmentioning

confidence: 99%

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Liquid phase synthesis of aromatic poly(azomethine)s, their physicochemical properties, and measurement of ex situ electrical conductivity of pelletized powdered samples

Hafeez

Akhter

Gallagher

et al. 2016

Designed Monomers and Polymers

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Aromatic bis-aldehydes have been used as building blocks in the synthesis of polyazomethines (a class of conjugated Schiff bases) and their physicochemical properties have been studied. Six dialdehydes have been synthesized, 3a-3f, via etherification reaction between aromatic diols (2a-2f) and 4-fluorobenzaldehyde (1) (see Scheme 1), and then polymerized with 1,4-phenylenediamine (4a) and 4,4′-oxydianiline (4b) (see Scheme 2). The chemical structures of the bis-aldehydes were elucidated by FTIR, 1H NMR and 13C NMR spectroscopic studies, elemental analysis and single crystal whereas the polymers were studied by FTIR and NMR spectroscopy. Their physicochemical properties were examined by their inherent viscosity, organosolubility, differential scanning calorimetry, X-ray powder diffraction, thermogravimetric analysis, solvatochromism, and photoluminescence. We report the electrical conductivity of each polymer measured by the four probe method. The results indicate that the electrical conductivity of polymers lies in range 0.019–0.051 mScm−1 which is reasonably higher than any reported value.

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Section: Resultsmentioning

confidence: 99%

“…[ 4 ] However, there are some inherent drawbacks in conducting polymers as well, such as low material recovery and stability to environments, lack of film uniformity over large surface, and irregular linkages within the polymer backbone chain. [ 5,6 ]…”

Section: Introductionmentioning

confidence: 99%

Liquid phase synthesis of aromatic poly(azomethine)s, their physicochemical properties, and measurement of ex situ electrical conductivity of pelletized powdered samples

Hafeez

Akhter

Gallagher

et al. 2016

Designed Monomers and Polymers

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show abstract

“…As observed in the fitted UV–vis spectra, the absorption peaks derived from the intermediates shifted to the shorter wavelength compared with that of MB, implying that the smaller conjunction system contained in the intermediates than that of in MB molecular [ 30 , 31 ]. In addition, the previous studies also revealed that the aromatic molecules could be adsorbed on the surfaces of both Pt and Ni [ 32 – 36 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Pt3Ni Microspheres with High Performance for Rapid Degradation of Organic Dyes

et al. 2015

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In this study, Pt3Ni microspheres consisted of nanoparticles were synthesized without addition of surfactants via the solvothermal route. The obtained sample was characterized by X-ray diffraction (XRD), inductively coupled plasma-atomic emission spectrometer (ICP-AES), X-ray photoelectron spectroscopy (XPS), and field-emission scanning electron microscopy (FESEM). Furthermore, the catalytic performance of as-synthesized Pt3Ni microspheres was evaluated on the degradation of different organic dyes (methylene blue, methyl orange, Congo red, and rhodamine B). The results show that different dyes were rapidly decomposed by Pt3Ni microspheres in different pathways. Among different dyes, the formation and further degradation of the intermediates was observed during the degradation of methylene blue and methyl orange, suggesting the indirect degradation process of these dyes. This study provides not only a promising catalyst for the removal of organic contaminants for environment remediation, but also new insights for Pt3Ni alloy as a high-performance catalyst in organic synthesis.

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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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Synthesis and electrochromic properties of novel poly(urethane–azomethine)s containing triphenylamine units

Cited by 15 publications

References 38 publications

Liquid phase synthesis of aromatic poly(azomethine)s, their physicochemical properties, and measurement of ex situ electrical conductivity of pelletized powdered samples

Liquid phase synthesis of aromatic poly(azomethine)s, their physicochemical properties, and measurement of ex situ electrical conductivity of pelletized powdered samples

Synthesis of Pt3Ni Microspheres with High Performance for Rapid Degradation of Organic Dyes

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

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