Effect of the planar center moiety for a donor-acceptor polymeric electrochrome

Doyranlı, Ceylan; Çolak, Betül; Lacinel, Gözde; Can, Mustafa; Koyuncu, Fatma Baycan; Koyuncu, Sermet

doi:10.1016/j.polymer.2016.12.016

Cited by 9 publications

(10 citation statements)

References 41 publications

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“…The high stability of PTST2 is also consistent with AFM results, which are directly related to the morphology of polymer films. The oxidation reduction response time of the polymer films were observed below 3 s. Finally, the coloration efficiency values determined for the PTST2 (228 cm 2 C À 1 ) were found to be about two times higher than the PTST (132 cm 2 C À 1 ) 34 , and three time higher than PTSeT (76 cm 2 C À 1 ) ( Table 4).…”

Section: Spectro-electrochemical Propertiesmentioning

confidence: 91%

“…On the other hand, the potentials were calibrated to the ferrocene redox couple E o (Fc/Fc + ) = + 0.41 V to determine the accurate HOMO-LUMO energy levels, oxidation and reduction potential onsets of TST. [30] TST2 and TST2. Overall, these results indicated that the HOMO-LUMO band gap narrowed because of polymerization (Table 2).…”

Section: Electrochemical Properties Of Tst Tst2 Tset Monomers and Pmentioning

confidence: 99%

“…[28,29] In our recent study, the planar phenanthrene center effect on the electrochromic performance of a benzothiadiazole based donor-acceptor polymer structure was examined. [30] Herein, a series of 3-hexylythiophene substituted benzochalcogen diazole based on fluorinated S and Se donor acceptor monomers were prepared by Stille coupling reactions. These monomers were directly polymerized on to ITO/Glass surface by cyclic scan potenthiodynamic method.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the Electrochromic Properties of Fluorinated Benzochalcogenodiazole Based Donor‐Acceptor Polymers

et al. 2020

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In this study, a series of benzochalcogenodiazole based donor acceptor monomers namely 4,7-bis(4-hexyl-2-thienyl)-2,1,3benzothiadiazole (TST), 5,6-difluoro-4,7-bis(4-hexyl-2-thienyl)-2,1,3-benzothiadiazole (TST2) and 4,7-bis(4-hexyl-2-thienyl)-2,1,3-benzoselenadiazole (TSeT) were synthesized by Stille reaction and then directly polymerized on to Indium Tin Oxide coated glass (ITO/Glass) surface by electrochemical polymerization process. According to UV-Vis measurements, a 20 nm blue shift was detected at low energy band after fluorination of TST (TST2). Besides, a 40 nm red shift was observed by changing S to Se on the benzochalcogenodiazole moiety (TSeT). Thus, the optical band gaps were varied as 2.32, 2.45 and 2.16 eV for TST, TST2 and TSeT, respectively. According to AFM results, rougher surface was observed in the PTSeT thin film than that of PTST and PTST2. Thin films of electrodeposited polymers onto ITO/glass surface displayed ambipolar multielectrochromic behavior both anodic and cathodic region. The ambipolar charge distribution was also observed in the theoretical DFT calculations. When the electrochromic performance of the polymer films was compared to each other, it was seen that the PTST2 has a better stability and higher the percentage transmittance change (ΔT%) at near-IR regime between neutral and oxidized states.

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Section: Spectro-electrochemical Propertiesmentioning

confidence: 91%

Section: Electrochemical Properties Of Tst Tst2 Tset Monomers and Pmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tuning the Electrochromic Properties of Fluorinated Benzochalcogenodiazole Based Donor‐Acceptor Polymers

et al. 2020

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“…The difference in the regioregularity of the alkoxy substituents on the bithiophene unit affects the HOMO energy levels more strongly than the LUMO levels. The HOMO level of the alkyl-substituted derivative hh2T-BTD-C 6 has been reported to be around -5.4 eV [35,36], which is a much more negative energy level than that of hh2T-BTD. This result suggests that the introduction of alkoxy groups enhances the electron-donating nature of D-A polymers.…”

Section: Electrochemical Propertiesmentioning

confidence: 97%

Synthesis and Properties of Donor-acceptor-type Polymers Comprising Alkoxy-substituted Bithiophene Units

Imae

Tada

Harima

2019

J. Photopol. Sci. Technol.

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Two donor-acceptor-type conjugated polymers comprising alkoxy-substituted bithiophenes were synthesized by both direct C-H arylation polymerization and Stille-type polycondensation. Although these polymers contain the same components, i.e. two alkoxythiophene moieties and one benzothiadiazole moiety in a repeating unit, their optical and electrochemical properties were clearly different owing to their different regioregularities.

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“…Polybenzothiadiazole is one of the most studied conductive polymers as a low-bandgap polymer for applications such as photo voltaic cells, transistors [1]- [20]. An article of chiral-electroactive low bandgap polymer composite was accepted into Journal of Materials Science and Chemical Engineering [21].…”

Section: Introductionmentioning

confidence: 99%

Lyotropic Liquid Crystal Electrochemical Polymerization of Thiophene-Based Monomers: Polymerization in Cholesteric Liquid Crystal and Columnar Phase

Eguchi¹,

Goto²

2017

Soft

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Synthesis of conductive polymer poly([thiophene]-[benzo[1,2,3]thiadiazole][thiophene]) (abbreviated as P(T-Btdaz-T)) was achieved by electrochemical polymerization in hydroxypropyl cellulose (HPC)/N,N-dimethylformamide (DMF) in liquid crystal state. The polymer thus obtained shows fingerprint texture, which is derived from helical structure of the HPC in cholesteric liquid crystal state. Fourier transform infrared spectroscopy measurements revealed that the polymer film is P(T-Btdaz-T)/HPC composite. Circular dichroism optical absorption spectroscopy measurements show that the polymer has the optical activity. Next, electrochemical polymerization of 3,4-ethylenedioxythiophene (EDOT) was carried out in columnar phase liquid crystal. The polymer transcribes the columnar structure and shows optical structure resembling columnar liquid crystal electrolyte solution.

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Effect of the planar center moiety for a donor-acceptor polymeric electrochrome

Cited by 9 publications

References 41 publications

Tuning the Electrochromic Properties of Fluorinated Benzochalcogenodiazole Based Donor‐Acceptor Polymers

Tuning the Electrochromic Properties of Fluorinated Benzochalcogenodiazole Based Donor‐Acceptor Polymers

Synthesis and Properties of Donor-acceptor-type Polymers Comprising Alkoxy-substituted Bithiophene Units

Lyotropic Liquid Crystal Electrochemical Polymerization of Thiophene-Based Monomers: Polymerization in Cholesteric Liquid Crystal and Columnar Phase

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