Electrosyntheses and characterizations of a new soluble conducting copolymer of 5-cyanoindole and 3,4-ethylenedioxythiophene

Nie, Guangming; Qu, Liangyan; Xu, Jingkun; Zhang, Shusheng

doi:10.1016/j.electacta.2008.06.058

Cited by 103 publications

(52 citation statements)

References 32 publications

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“…This observation further confirms the occurrence of copolymerization. 32 Furthermore, the colors of the polymer films on ITO in the de-doped and doped states were also recorded, as shown in the insets of Figure 5. PNMPy displays a light yellowish green color in the de-doped state and is pale cyan in the doped state (see insets A and A 0 ), and PCPDT switches from purple to blue (see insets C and C 0 ).…”

Section: Resultsmentioning

confidence: 99%

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Cheng

Zhao

et al. 2012

Polym J

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Electrochemical copolymerization of N-methylpyrrole (NMPy) and cyclopenta[2,1-b:3,4-b 0 ]dithiophene (CPDT) was performed in acetonitrile containing sodium perchlorate as a supporting electrolyte. Characterization of the resultant copolymer P(CPDTco-NMPy) was performed by cyclic voltammetry, UV-vis spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy. The P(CPDT-co-NMPy) film has distinct electrochromic properties and exhibits four different colors (reddish brown, pale khaki, pale sea green and light blue) under various potentials. The maximum contrast (DT%) and response time of the copolymer film at 750 nm were measured as 47.0% and 2.20 s, respectively. An electrochromic device (ECD) based on P(CPDT-co-NMPy) and poly(3,4-ethylenedioxythiophene) was constructed and characterized. The optical contrast (DT%) at 630 nm was found to be 40.2%, and the response time was measured as 1.77 s. The coloration efficiency of the device was calculated to be 476 cm 2 per C at 630 nm. The ECD also has satisfactory optical memories and redox stability.

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Section: Resultsmentioning

confidence: 99%

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Cheng

Zhao

et al. 2012

Polym J

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“…The voltammogram indicates the cycleability of both materials between the conducting (oxidized) and insulating (neutral) states with insignificant decomposition due to their high electrochemical stability. The peak potential shift in the CV may be responsible for the slow ion diffusion or interfacial charge transfer processes due to the slow heterogeneous electron transfer, the effects of local rearrangements of the polymer chains, and the slow mutual transformations of various electronic species [41]. Fig.…”

Section: Electrochemical Behaviormentioning

confidence: 99%

“…Fig. 7a shows the CV of PPY and [IV] prepared in the presence of GO (4.0 wt%) at 30 ± 1 and 10 ± 1°C at a scan rate (V/s) of 0.1 in a potential window of -0.1 to -0.6 V. The CV shows continuous increase in the peak current in the order of PPY followed by PNCs prepared at 30 ± 1 and 10 ± 1°C, respectively [41].…”

Section: Electrochemical Behaviormentioning

confidence: 99%

Enhanced electrocapacitive performance and high power density of polypyrrole/graphene oxide nanocomposites prepared at reduced temperature

Mudila¹,

Joshi²,

Rana³

et al. 2014

Carbon letters

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An attempt was made to investigate the effect of the preparation temperature on the electrocapacitive performance of polypyrrole (PPY)/graphene oxide (GO) nanocomposites (PNCs). For this purpose, a series of PNCs were prepared at various temperatures by the cetyltrimethylammonium bromide-assisted dilute-solution polymerization of pyrrole in presence of GO (wt%) ranging from 1.0 to 4.0 with ferric chloride as an oxidant. The formation of the PNCs was ascertained through Fourier-transform infrared spectrometry, X-ray diffraction spectra, scanning electron microscopy and simultaneous thermogravimetric-differential scanning calorimetry. The electrocapacitive performance of the electrodes derived from sulphonated polysulphone-bound PNCs was evaluated through cyclic voltammetry with reference to Ag/ AgCl at a scan rate (V/s) ranging from 0.2 and 0.001 in potassium hydroxide (1.0 M). The incorporation of GO into the PPY matrix at a reduced temperature has a pronounced effect on the electrocapacitive performance of PNCs. Under identical scan rates (0.001 V/s), PNCs prepared at 10 ± 1°C render improved specific conductivity (526.33 F/g) and power density (731.19 W/Kg) values compared to those prepared at 30 ± 1°C (217.69 F/g, 279.43 W/Kg). PNCs prepared at 10 ± 1°C rendered a capacitive retention rate of ~96% during the first 500 cycles. This indicates the excellent cyclic stability of the PNCs prepared at reduced temperatures for supercapacitor applications.

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“…According to Turkarslan et al and Nie et al the analysis of the morphology of the polymer and its copolymer films by SEM technique can provide evidence of copolymerisation [24,25]. Therefore, SEM micrographs of PDHQT, PDNBP and copolymer films prepared in different proportions were examined.…”

Section: Morphologymentioning

confidence: 99%

“…A tool to improve the formation of a uniform and well adhered film electrodeposited onto the electrode surface is its copolymerisation with another monomer that presents some other desired property. Therefore electrochemical copolymerisation is an efficient approach for the modification of the properties of DHQT and then to obtain a variety of conjugated polymers with different electrical, optical and morphological properties [23][24][25]. In order to modify the properties of DHQT and thus enhance the adherence and film formation capability of this polymer, this work has focused on the electrochemical copolymerisation of DHQT with a pyrrole derivative, (R)-(-)-3-(1-pyrrolyl)propyl-N-(3,5-dinitrobenzoyl)-α-phenylglycinate, DNBP.…”

Section: Introductionmentioning

confidence: 99%

Copolymerisation as a way to enhance the electrochromic properties of an alkylthiophene oligomer and a pyrrole derivative: copolymer of 3,3′″ dihexyl-2,2′:5′,2″:5″,2′″-quaterthiophene with (R)-(-)-3-(1-pyrrolyl)propyl-N-(3,5-dinitrobenzoyl)-α-phenylglycinate

Silva

Nogueira

Santos

et al. 2015

Solar Energy Materials and Solar Cells

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Electrosyntheses and characterizations of a new soluble conducting copolymer of 5-cyanoindole and 3,4-ethylenedioxythiophene

Cited by 103 publications

References 32 publications

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Enhanced electrocapacitive performance and high power density of polypyrrole/graphene oxide nanocomposites prepared at reduced temperature

Copolymerisation as a way to enhance the electrochromic properties of an alkylthiophene oligomer and a pyrrole derivative: copolymer of 3,3′″ dihexyl-2,2′:5′,2″:5″,2′″-quaterthiophene with (R)-(-)-3-(1-pyrrolyl)propyl-N-(3,5-dinitrobenzoyl)-α-phenylglycinate

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