Highly stable hybrid selenophene-3,4-ethylenedioxythiophene as electrically conducting and electrochromic polymers

Lu, Baoyang; Zhen, Shijie; Zhang, Shimin; Xu, Jingkun; Zhao, Guoqun

doi:10.1039/c4py00529e

Cited by 91 publications

(43 citation statements)

References 46 publications

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“…Generally, they are fabricated from materials that their colors can be changed reversibly by electroredox chemical reactions with small applied voltages [1][2][3][4][5]. Nowadays, organic polymeric materials have been interested to fabricate electrochromic devices based on glasses or flexible substrates [6,7]. Conducting polymer is one of the alternatives.…”

Section: Introductionmentioning

confidence: 99%

PEDOT:PSS Nanofilms Fabricated by a Nonconventional Coating Method for Uses as Transparent Conducting Electrodes in Flexible Electrochromic Devices

Sanglee

Chuangchote

Chaiwiwatworakul

et al. 2017

Journal of Nanomaterials

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Nanofilms of a polymer mixer of two ionomers, poly 3,4-ethylenedioxythiophene:poly(styrene sulfonic acid) (PEDOT:PSS), were used as conducting materials to develop transparent conducting electrodes. It was firstly found that convective deposition, a versatile and wide-area coating method, could be used for the coating and acid treatment of PEDOT:PSS films. Electrical conductivity of the PEDOT:PSS films was significantly enhanced up to 1814 S/cm by only one-time surface treatment by a mild acid solution (4 M methanesulfonic acid). This is because some PSS chains were removed out from the polymer mixer films without damage on the substrates. UV-vis-NIR spectroscopy, Raman spectroscopy, and cyclic voltammetry were used to characterize the acid-treated transparent conducting films. In this report, obtained transparent conducting PEDOT:PSS films on polyester substrates were used as flexible electrodes for fabrication of flexible electrochromic devices. Poly(3-hexylthiophene) (P3HT) was used as an active layer, which its color changed reversibly from transparent-light blue to purple with a small applied voltage (±3 V).

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Section: Introductionmentioning

confidence: 99%

PEDOT:PSS Nanofilms Fabricated by a Nonconventional Coating Method for Uses as Transparent Conducting Electrodes in Flexible Electrochromic Devices

Sanglee

Chuangchote

Chaiwiwatworakul

et al. 2017

Journal of Nanomaterials

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“…In particular, CVs of PDBF‐3DTh showed an obvious hysteresis, i.e., an obvious potential shift of redox peaks. This phenomenon is hardly explained by conventional kinetic limitations such as ion diffusion or interfacial charge transfer processes . The main reasons are usually slow heterogeneous electron transfer, local rearrangement effect of polymer chains, and electronic charging of interfacial exchange corresponding to the metal/polymer and polymer/solution interfaces .…”

Section: Resultsmentioning

confidence: 99%

“…The surface morphology of PDBT‐3DTh and PDBF‐3DTh deposited on the ITO electrode was investigated by SEM, as shown in Supporting Information Figure S10. PDBT‐3DTh (A) and PDBF‐3DTh (B) films exhibited smooth and compact morphology at high magnifications, which was beneficial to increase the electron transfer capability of conjugated polymer . Also, the smooth and compact morphology of the polymers films were especially significant in the fabrication of electrochromic devices.…”

Section: Resultsmentioning

confidence: 99%

Blue to light gray electrochromic polymers from dodecyl‐derivatized thiophene Bis‐substituted dibenzothiophene/dibenzofuran

Lin

Zhao

Ming

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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3-Dodecylthiophene end-capped two monomers: 2,8-bis-(4-dodecyl-thiophen-2-yl)-dibenzothiophene (DBT-3DTh) and 2,8-bis-(4-dodecyl-thiophen-2-yl)-dibenzofuran (DBF-3DTh) were synthesized via Stille coupling reaction. Both monomers exhibited emission peaks at about 400 nm with fluorescence quantum yields ranging from 0.16 to 0.21. The corresponding electroactive polymers poly(2,8-bis-(4-dodecyl-thiophen-2-yl)dibenzothiophene) (PDBT-3DTh) and poly(2,8-bis-(4-dodecylthiophen-2-yl)-dibenzofuran) (PDBF-3DTh) were obtained by electropolymerization method and displayed good electrochemical stability. Both polymers switched between light gray in the neutral state and blue in the oxidized state. Kinetic inves-tigations showed that PDBT-3DTh exhibited a maximum optical contrast (DT %) of 25.23% at 575 nm with the coloration efficiency (CE) of 196 cm 2 C 21 . However, the electrochromic properties of PDBF-3DTh were inferior to PDBT-3DTh. Further detailed discussions with EDOT and 3-alkylthiophenes endcapped DBT/DBF hybrid electrochromic polymers were comparatively studied.

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“…It was suggested that vibronic splitting about conjugated monomers correlate to the rigid structure . Furthermore, the splitted absorption spectra were generally observed in hybrid conjugated samples containing long side chain …”

Section: Resultsmentioning

confidence: 99%

Design and synthesis of 9,9‐dioctyl‐9H‐fluorene based electrochromic polymers

Jiang

Zhen

et al. 2015

J. Polym. Sci., Part A: Polym. Chem.

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Two novel heterocycle-fluorene-heterocycle monomers, 2,2 0 -(9,9-dioctyl-9H-fluorene-2,7-diyl)dithiophene (Th-FTh) and 5,5 0 -(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(2,3-dihydro-, were synthesized via Stille coupling reaction and electropolymerized to form corresponding polymers P(Th-F-Th) and P(EDOT-F-EDOT). Furthermore, the optoelectronic properties of the obtained monomers and polymers were explored using cyclic voltammetry (CV), UV-vis, and emission spectra and in situ spectroelectrochemical techniques. The band gap values of monomers calculated by DFT were 3.75 eV for EDOT-F-EDOT and 4.03 eV for Th-FTh, while that of P(EDOT-F-EDOT) and P(Th-F-Th) were brought down to 1.70 and 2.10 eV, respectively. Both polymers exhibited excellent redox activity and electrochromic performance. P(EDOT-F-EDOT) exhibited a maximum optical contrast of 25.8% at 500 nm in visible region with a response time of 1.2 s. In addition, the coloration efficiency of P(EDOT-F-EDOT) was calculated to be 220 cm 2 C 21 .

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Highly stable hybrid selenophene-3,4-ethylenedioxythiophene as electrically conducting and electrochromic polymers

Abstract: A family of four novel selenophene–EDOT oligomers were synthesized using Stille coupling and electropolymerized to form highly stable conducting hybrid polymers with excellent electrochromic properties.

Cited by 91 publications

References 46 publications

PEDOT:PSS Nanofilms Fabricated by a Nonconventional Coating Method for Uses as Transparent Conducting Electrodes in Flexible Electrochromic Devices

PEDOT:PSS Nanofilms Fabricated by a Nonconventional Coating Method for Uses as Transparent Conducting Electrodes in Flexible Electrochromic Devices

Blue to light gray electrochromic polymers from dodecyl‐derivatized thiophene Bis‐substituted dibenzothiophene/dibenzofuran

Design and synthesis of 9,9‐dioctyl‐9H‐fluorene based electrochromic polymers

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