Regioregular poly[3-butyl-2,5-thienylene-alt-1,4-phenylene]: synthesis, preliminary characterization aspects and application in the fabrication of light-emitting diodes

Ng, Siu‐Choon; Xu, Jingmei; Chan, Hardy Sze On; Fujii, Akihiko; Yoshino, Katsumi

doi:10.1039/a807329e

Cited by 47 publications

(28 citation statements)

References 31 publications

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“…The peak at 794 cm À1 is the characteristic of C-S bonds in the thiophene rings. 40 The peaks at 1496 and 1427 cm À1 originate from the stretching of thiophene rings. 41 The bands at 1315 and 1267 cm À1 are due to the C-N vibrations.…”

Section: Resultsmentioning

confidence: 99%

A core–shell composite of porous ZnO nanosheets and a multichromic conducting polymer: enhanced electrochromic performances

Sun

Wang

et al. 2014

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

A core–shell composite of porous ZnO nanosheets and a multichromic conducting polymer: enhanced electrochromic performances

Sun

Wang

et al. 2014

New J. Chem.

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“…5a), the bands at 2954, 2924 and 2858 cm À1 are attributed to the stretching modes of CAH in aliphatic alkyl chains. While bands around 1600 and 1546 cm À1 are ascribed to the stretching of phenylene rings, and the bands at 1500 and 1458 cm À1 are due to the stretching of thiophene rings [28]. The FTIR spectrum of pure PEDOT (see Fig.…”

Section: Ftir Spectra Of Polymersmentioning

confidence: 99%

A novel multichromic copolymer of 1,4-bis(3-hexylthiophen-2-yl)benzene and 3,4-ethylenedioxythiophene prepared via electrocopolymerization

Zhang

Hua

Wang

et al. 2010

Journal of Electroanalytical Chemistry

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“…27 The peaks at 798 and 686 cm −1 are characteristic of thiophene ring. 28 The peak at 1087 cm −1 is due to the presence of ClO 4 − . 29 The spectrum of nanocomposite film possesses all the similar characteristic bands of PBTB.…”

Section: Resultsmentioning

confidence: 98%

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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Regioregular poly[3-butyl-2,5-thienylene-alt-1,4-phenylene]: synthesis, preliminary characterization aspects and application in the fabrication of light-emitting diodes

Cited by 47 publications

References 31 publications

A core–shell composite of porous ZnO nanosheets and a multichromic conducting polymer: enhanced electrochromic performances

A core–shell composite of porous ZnO nanosheets and a multichromic conducting polymer: enhanced electrochromic performances

A novel multichromic copolymer of 1,4-bis(3-hexylthiophen-2-yl)benzene and 3,4-ethylenedioxythiophene prepared via electrocopolymerization

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

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