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A Nanostructured Fc(COCH3)2 Film Prepared Using a Silica Monolayer Colloidal Crystal Templates and Its Electrochromic Properties

Abstract

Owing to the oxidation and reduction reactions mainly taking place on surface, enlarging the specific surface of redox materials is a key to achieve excellent electrochemical performance. In this work, by using silica monolayer colloidal crystal templates (MCCTs), the nanostructured Fc(COCH3)2 film is prepared successfully, and such a nanostructure could exhibit the unique electrochemical properties: the MCCTs could impede the aggregation tendency of Fc(COCH3)2 and possess high electrochemical activity; the Fc(COCH3)2 enlarges the contacting area and offers more active sites and faster electronic transmission channels. The structure, optical and electrochemical properties of nanostructured Fc(COCH3)2 are tested and then compared with dense Fc(COCH3)2 films to evaluate the role of the nanoarchitecture. The unique structure design for Fc(COCH3)2 film enables outstanding performance, showing large transmittance change (ΔT) of 37% at 550 nm when switch between 0.5 V and -2.5 V, which is approximately ninefold higher than that of compact Fc(COCH3)2 film (approximately 4%). Response times of coloration and bleaching are found to be only 16.15 s and 5.56 s. Furthermore, the silica monolayer/Fc(COCH3)2 film shows much better cycling stability than compact one. The results indicates the nanostructure could significantly improve electrochemical performance of Fc(COCH3)2 film due to the increasing in electrochemical active sites and the enhancement to the “D-to-A” redox switch of ferrocene.

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Publication details

The article was received on 27 Jul 2017, accepted on 12 Oct 2017 and first published on 13 Oct 2017


Article type: Paper
DOI: 10.1039/C7CP05074G
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    A Nanostructured Fc(COCH3)2 Film Prepared Using a Silica Monolayer Colloidal Crystal Templates and Its Electrochromic Properties

    C. X. Hua, S. Dou, H. Xu, S. Hou, H. Zhang, P. P. Zhang, Y. Gan, J. Zhao and Y. Li, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP05074G

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