Electrosynthesis and characterization of an electrochromic material from poly(1,4-bis(2-thienyl)-benzene) and its application in electrochromic devices

Xu, Lianyi; Zhao, Jinsheng; Cui, Chuansheng; Liu, Renmin; Liu, Jifeng; Wang, Huaisheng

doi:10.1016/j.electacta.2010.12.062

Cited by 39 publications

(35 citation statements)

References 45 publications

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“…The oxidation current increases with the increasing scanning cycle, suggesting the deposition of electroactive polymer films on both working electrodes. As seen in Figure 1b, the redox peak of the polymer locates at 0.88 V, which is similar to that of PBTB (Figure 1a), 23 indicating that the polymer on the ZnO-coated substrate is PBTB film. However, the polymer deposition rate appears to be slower on ZnO-coated substrate than that on ITO substrate.…”

Section: Methodssupporting

confidence: 65%

Electrochemical Fabrication of Poly(1,4-bis(2-thienyl)-benzene)/ZnO Nanoridge Composite Film with Enhanced Electrochromic Performance

Lv¹,

Hu²,

Sun³

et al. 2012

J. Electrochem. Soc.

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Poly(1,4-bis(2-thienyl)-benzene) (PBTB) is electrochemically synthesized on ZnO-coated electrode to form PBTB/ZnO nanocomposite electrochromic film. The composite film exhibits a noticeable electrochromism with reversible color changes from yellow (neutral state) to green (oxidized state). From SEM images, PBTB/ZnO nanocomposite film presents the smooth and even surface, which is different from the morphology of the ZnO nanoridges with average width of about 50-100 nm. Spectroelectrochemical analysis reveals that the composite film has fast switching time of 0.9 s (2 s for pure PBTB film) at 1100 nm. Moreover, it can retain up 90% (50% for pure PBTB film) of its original electroactivity after 300 cycles stability measurement. All the results demonstrate that the electrochromic performances are significantly enhanced through incorporating PBTB with ZnO nanoridges. Accordingly, nanocomposite structure plays an essential role in improving electrochromic switching time and long-term stability of electrochromic materials due to shorter counterion diffusion distance and good adhesion to the electrode.Electrochromism is broadly defined as reversible optical changes of a material due to the electrochemical oxidation or reduction upon an applied electric field. 1,2 There are various potential applications toward electrochromic devices (ECDs), such as smart windows, 3 reflectance mirrors, 4 thin flat panel displays 5 and memory devices. 6 Conducting polymers (CPs) as an important class of electrochromic materials have gained popularity due to low cost, good processibility, multicolor display property and high optical contrast ratio. 7-9 However, practical applications of the CPs-based ECDs have been limited by their low coloration efficiency, slow switching speed and poor longterm stability. Therefore, extensive research has been launched into the development of electrochromic composite materials, 10 especially for composite films consisting of conducting polymers and inorganic nanomaterials since they can combine the advantages of both components and may offer special properties through the reinforcement or modification of each other. 11 As well-known, some research has been done to improve electrochromic performances. For example, Ho reported enhanced optical contrast of PANI/SiO 2 composite films 12 and higher coloration efficiency of PANI/CNTs system. 13 Xu studied carbon nanotubes assisted polyoxometalate nanocomposite film with higher coloration efficiency. 14 Li fabricated PEDOT/TiO 2 and PMeT/TiO 2 nanocompostie electrode based electrochromic devices with enhanced long term stability. 15,16 These efforts significantly improve the performance of the CPs-based ECDs, but there is still little further research on improving switching time of electrochromic materials via organic-inorganic composite.As one of the most important parameters of ECDs, the switching time is strongly dependent on the counterion-transport rate in the electrochromic layer. The way to overcome the slow switching rate of the CPs-based ECDs is to de...

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Section: Methodssupporting

confidence: 65%

Electrochemical Fabrication of Poly(1,4-bis(2-thienyl)-benzene)/ZnO Nanoridge Composite Film with Enhanced Electrochromic Performance

Lv¹,

Hu²,

Sun³

et al. 2012

J. Electrochem. Soc.

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show abstract

“…A square-wave potential step method coupled with optical spectroscopy was used to study the switching time and contrast of the polymer films [56]. The P(IND-co-perylene) and P(MDOB-co-perylene) films were stepped by repeated potential between reduction (−0.2 V) and oxidized A C C E P T E D M A N U S C R I P T states (+0.9 V) with a time interval of 5 s in EPIDIL solutions.…”

Section: Electrochemical Switching Of the Polymer Films In Solutionsmentioning

confidence: 99%

Electrochemical synthesis, characterization and electrochromic properties of indan and 1,3-benzodioxole-based poly(2,5-dithienylpyrrole) derivatives

Wu¹,

Liao²,

Chen³

2014

Electrochimica Acta

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“…Osman Atwani and coworkers [11] have reported a kind of electrochromic polymer, poly(4,7-dithien-2-yl-2,1,3-benzothiadiazole), which was highly stable and had low band gap. And our group also reported the electrosynthesis and characterization of an electrochromic material from poly(1,4-bis(2-thienyl)-benzene) [12], which has a structure of poly(thiophene-arylene-thiophene). As a candidate for arylene unites, it is interesting to find that phenanthra-9,10-quinone turns out to be a ideal -electron system as which is fully conjugated.…”

Section: Introductionmentioning

confidence: 96%

Novel multicolored electrochromic polymers containing phenanthrene-9,10-quinone and thiophene derivatives moieties

Zhao

Cui

et al. 2013

Electrochimica Acta

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Electrosynthesis and characterization of an electrochromic material from poly(1,4-bis(2-thienyl)-benzene) and its application in electrochromic devices

Cited by 39 publications

References 45 publications

Electrochemical Fabrication of Poly(1,4-bis(2-thienyl)-benzene)/ZnO Nanoridge Composite Film with Enhanced Electrochromic Performance

Electrochemical Fabrication of Poly(1,4-bis(2-thienyl)-benzene)/ZnO Nanoridge Composite Film with Enhanced Electrochromic Performance

Electrochemical synthesis, characterization and electrochromic properties of indan and 1,3-benzodioxole-based poly(2,5-dithienylpyrrole) derivatives

Novel multicolored electrochromic polymers containing phenanthrene-9,10-quinone and thiophene derivatives moieties

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