All-solid-state electrochromic device of electrodeposited WO3 and prussian blue film with PVC gel electrolyte

L, Su; Fang, Jinghuai; Zhang, Lu

doi:10.1002/(sici)1097-4628(19981205)70:10<1955::aid-app10>3.0.co;2-f

Cited by 4 publications

(1 citation statement)

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“…The electrochromic materials include inorganic and organic materials. The inorganic materials are mainly metal oxides such as WO 3 , NiO 2 , and TiO 2 , and the organic materials include small molecules and conjugated polymers . Among conjugated polymers, low‐band gap polymers obtained by electrochemical polymerization of suitable redox active monomers draw considerable attention at present due to their potential ability in visible, IR, and microwave electrochromics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and spectroelectrochemical investigation of low‐bandgap polymer: Integrated quinoxaline and benzimidazole in one electron acceptor unit

Mahmut

Awut

Nurulla

et al. 2014

J of Applied Polymer Sci

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Two novel p-conjugated monomers, 6-(4-octyloxyphenyl)-4,8-bis(thiophene-2-yl)-3H- [d] imidazole [1,2,5] benzothiadiazole (M3) and 4-(4-octyloxyphenyl)-2,6-bis(thiophene-2-yl)-3H-[d] imidazole-acenaphtho[1,2-b]quinoxaline (M4), were synthesized. The monomer M4 contains a thiophene electron-donating unit and electron withdrawing unit in which quinoxaline and benzimidazole integrated in one benzene ring. Electrochemical polymerization of the monomers was carried out in acetonitrile/dichloromethane solvent mixture containing tetra-n-butylammonium hexafluorophosphate and electrochromic properties of polymers (P3 and P4) are described in this article. Furthermore, the effects of structural difference on electrochemical redox behavior and spectroelectrochemical properties of the two resulting polymers were examined. The results showed that an anodic wave at 10.48 V versus Ag wire pseudo-reference electrode corresponding to the monomer M4 oxidation was observed, while one anodic wave at 10.70 V was observed in oxidation of M3 as it contains stronger electron withdrawing thiadiazole structure. The UV-vis-Near-infrared (Nearinfrared spectroscopy) (NIR) spectra analysis revealed that the two polymers have one absorbance band centered at 603 nm. The band gaps, defined as the onset of the absorption band at 603 nm of these polymers, were determined as 1.60 eV for P3 and as 1.55 eV for P4. The electrochromic results showed that P3 revealed about 20% optical contrast at 980 nm and the P4 has 30% optical contrast at 806 nm with low response time (1 s for each polymer).

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Section: Introductionmentioning

confidence: 99%