Syntheses of electroactive layers based on functionalized anthracene for electrochromic applications

Yıldırım, Ahmet; Tarkuc, Simge; Ak, Metin; Toppare, Levent

doi:10.1016/j.electacta.2008.02.026

Cited by 58 publications

(38 citation statements)

References 13 publications

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“…As expected, best fits were obtained for n = 2 (indirect band). A graph is plotted between (αhν) 2 or the square of (αhν) and αhν (as abscissa), a straight line is obtained.…”

Section: Resultsmentioning

confidence: 99%

“…These oxides films can be colored anodically (Ir, Ni) or cathodically (W, Ti). Together with inorganic materials, conducting polymers have also been intensively studied for polymer electrochromic devices (PECDs) [2]. Besides, conjugate polymers have been used for other applications such as polymer conductors [3], elec-tronic components [4] [5], organic light-emitting diodes (OLED) [6] and solar cells (OSC) [7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H2SO4 Solution

Ninh¹,

Thảo²,

Long³

et al. 2016

OJOPM

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Polyaniline (PANI) onto indium-doped tin-oxide (ITO)-coated glass samples were prepared by electroopolymerization in 0.5 M H 2 SO 4 solution. Structure and morphology characterization of the PANI films demonstrated that the films were grown onto ITO substrates in the form of polycrystalline microbelts separated by micropores. By analysing the UV-Vis absorption spectra of the PANI films, the energy bandgap was found to be approximately 2.75 eV. The PANI/ITO films exhibited a good reversible electrochromic display (ECD) performance when cycled in 0.1 M LiClO 4 + pro-pylene carbonate. The response time of the ECD coloration was found to be as small as 15 s and the coloration efficiency was found to be 8.85 cm 2 × C −1 . After 100 cycles of the ECD performance, the cyclic voltammetry curve of the working electrode maintained unchanged. This demonstrates that the electropolymerized PANI films can be served as a good candidate for ECD applications, taking advantage of their excellent properties in terms of chemical stability.

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“…As expected, best fits were obtained for n = 2 (indirect band). A graph is plotted between (αhν) 2 or the square of (αhν) and αhν (as abscissa), a straight line is obtained.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H2SO4 Solution

Ninh¹,

Thảo²,

Long³

et al. 2016

OJOPM

View full text Add to dashboard Cite

show abstract

“…conductors [1], electronic components [2], [3], light-emitting diodes [4], batteries [5], and polymer electrochromic devices (PECDs) [6], because they exhibit several advantages, such as thermal stability, low cost and easy preparation.…”

mentioning

confidence: 99%

Electrochromic Characteristics of Polyaniline and Poly(3-Methylthiophene) Thin Films for Display

Chou

Liu

Yang

et al. 2015

J. Display Technol.

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In this study, the polyaniline (PANI) and the poly(3-methylthiophene) (PMeT) of the conductive polymer electrochromic thin films had been deposited on the indium tin oxide/glass (ITO/Glass) substrate by electrochemical polymerization, respectively. The cycling stability of the electrochromic thin film prepared with the variety of the different charge densities was investigated. The electrochromic behaviors of the PMeT/ITO/Glass and PANI/ITO/Glass were performed in the electrolytes of 0.1 M lithium perchlorate LiClO /propylene carbonate (PC) and 0.1 M LiClO M perchloric acid HClOPC, respectively. The colors of the PMeT thin film exhibited blue and red in oxidation and reduction states, respectively. And the colors of the PANI thin film exhibited green and yellow in oxidation and reduction states, respectively. Furthermore, the absorbance and transmittance (T%) of the electrochromic thin film were measured by ultraviolet-visible (UV-Visible) spectrometer in this study. Besides, in order to find the optimal manufacture conditions of the electrochromic thin film, the potentials of redox reaction and cycles were investigated by the cyclic voltammetry (CV) measurement system to analyze the cycling stability of the electrochromic thin film with the variety of the different charge densities. Finally, the reflectance (R%) of the optimal parameters of the electrochromic thin film was measured by chroma meter in this study. And the variational colors of the electrochromic thin film were observed by the chromaticity coordinates of the Commission Internationale de l'Eclairage (CIE), so that the electrochromic thin film can be applied to the filed of display.

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“…Generally, these fused components are structurally planar and lead to a substantive extension of conjugation in the polymers [18,19]. Another powerful approach towards designing low band gap polymers is to have alternating donor and acceptor units along the polymer backbone [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Optical Study of a New Oligophenylene

et al. 2012

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Abstract:A new substituted oligophenylene was prepared by the Knoevenagel condensation of 4-methoxybezaldehyde with a functionalized oligophenylene (OMPA). The latter was obtained by (4-methoxy phenyl) acetonitrile electrochemical oxidation. The resulting modified oligomer was characterized by various spectroscopic techniques: NMR, FTIR and UV. The thermal study showed that the modified material exhibited a lower thermal stability compared with OMPA. Finally, the optical study revealed that in solution, the emission was red-shifted when compared with the non-modified oligomer emission and that the optical gap changed from 3.1 eV to 2.75 eV. In thin layer solid state, photoluminescence was again red-shifted by 120 nm, which is probably due to an interaction between the oligomer chains. In addition, a transient photoluminescence study was undertaken for the synthesized materials. It showed that the lifetimes of the photo-generated species were shortened by the conjugation extension in the modified oligomer and by the inter-chain interactions in the solid state. OPEN ACCESSPolymers 2012, 4 1227

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Syntheses of electroactive layers based on functionalized anthracene for electrochromic applications

Cited by 58 publications

References 13 publications

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H<sub>2</sub>SO<sub>4</sub> Solution

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H<sub>2</sub>SO<sub>4</sub> Solution

Electrochromic Characteristics of Polyaniline and Poly(3-Methylthiophene) Thin Films for Display

Synthesis and Optical Study of a New Oligophenylene

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Syntheses of electroactive layers based on functionalized anthracene for electrochromic applications

Cited by 58 publications

References 13 publications

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; Solution

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; Solution

Electrochromic Characteristics of Polyaniline and Poly(3-Methylthiophene) Thin Films for Display

Synthesis and Optical Study of a New Oligophenylene

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Product

Resources

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Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H<sub>2</sub>SO<sub>4</sub> Solution

Characterization of Electrochromic Properties of Polyaniline Thin Films Electropolymerized in H<sub>2</sub>SO<sub>4</sub> Solution