2016
DOI: 10.1021/acs.chemmater.6b04355
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An Advanced Method for Preparation of Helical Carbon and Graphitic Films Using a Carbonization Substrate

Abstract: An advanced method is proposed to prepare helical graphite films with large domains of left- and right-handed spiral morphologies which are composed of fibril bundles using oxidized PEDOT films as carbonization substrates. Helical PEDOT (H-PEDOT) films, as carbonization precursors, are prepared via an electrochemical polymerization in an asymmetric reaction solution containing the chiral nematic liquid crystal (N*-LC), the monomer bis-EDOT, and an electrolyte. The N*-LCs are provided by mixing a spot of di- or… Show more

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Cited by 15 publications
(11 citation statements)
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“…The carbonization precursor films can also be directly synthesized by using a very simple electrochemical polymerization procedure with a short reaction time of 1 h. Moreover, we have recently developed to produce carbonaceous and graphitic materials with hierarchical helical morphologies or highly aligned structures from electrochemically synthesized or solid-state polymerized PEDOT materials. 13,20 We believe that the capacities are expected to be more enhanced than the present carbonaceous films by using the morphology-controlled carbon materials as supercapacitor electrodes owing to their ordered structures. This morphological controllability for the PEDOT-based carbon materials is also a superior point for the development of advanced supercapacitor electrodes.…”
Section: Resultsmentioning
confidence: 85%
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“…The carbonization precursor films can also be directly synthesized by using a very simple electrochemical polymerization procedure with a short reaction time of 1 h. Moreover, we have recently developed to produce carbonaceous and graphitic materials with hierarchical helical morphologies or highly aligned structures from electrochemically synthesized or solid-state polymerized PEDOT materials. 13,20 We believe that the capacities are expected to be more enhanced than the present carbonaceous films by using the morphology-controlled carbon materials as supercapacitor electrodes owing to their ordered structures. This morphological controllability for the PEDOT-based carbon materials is also a superior point for the development of advanced supercapacitor electrodes.…”
Section: Resultsmentioning
confidence: 85%
“…We have recently discussed that the degree of crystallinity of the graphitic film prepared from a perchlorate ion (ClO 4 − )-doped PEDOT film up to 2600 °C is higher than that prepared from an undoped PEDOT film. 13 Since a highly crystalline carbon film usually has high electrical conductivity, the ClO 4 − -doped PEDOT film was used as a carbonization precursor polymer film in the present study. The amount of doped ClO 4 − in the PEDOT film was determined by using elemental analysis: C, 40.38; H, 2.75; S, 18.06; and Cl, 5.53.…”
Section: Resultsmentioning
confidence: 99%
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“…In fact, helical PEDOT (H‐PEDOT) is useful as a carbonization precursor for helical carbon and graphite bearing spiral morphology. [ 11,48 ] We previously reported the synthesis of H‐PEDOT by electrochemical polymerization of EDOT in N*‐LCs or LC‐based ionic liquids that include ordinary chiral compounds. [ 11,48–50 ] However, two types of chiral compounds with opposite helicity were needed because these chiral compounds had neither thermally invertible nor photoinvertible helical senses.…”
Section: Introductionmentioning
confidence: 99%