Programmable dual electrochromism in azine linked conjugated polymer

Minsu Han; Mithrabinda K. Poduval; Haijin Shin; Nobuyuki Tamaoki; Taiho Park; Yuna Kim; Eunkyoung Kim

doi:10.1364/OME.7.002117

Programmable dual electrochromism in azine linked conjugated polymer

Minsu Han, Mithrabinda K. Poduval, Haijin Shin, Nobuyuki Tamaoki, Taiho Park, Yuna Kim, Eunkyoung Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

A conjugated polymer consisting of tri-EDOT and azine groups was synthesized and explored for a programmable dual electrochromic device. Electrochemical doping (oxidation) and de-doping (reduction) resulted in the two distinct redox pairs, depending on the applied potential range. In situ spectroelectrochemical analyses revealed that the stepwise redox process of two units was associated with dual electrochromic responses: tri-EDOT unit for purple electrochromism followed by azine unit for blue electrochromism. Dual electrochromism of purple and blue was attainable at below 1.0 V which could induce the color transition upon the potential application of around ± 1 V. Maximum coloration efficiency of 393 cm²/C with a response time of 1 s was obtained.

Original language	English
Pages (from-to)	2117-2125
Number of pages	9
Journal	Optical Materials Express
Volume	7
Issue number	6
DOIs	https://doi.org/10.1364/OME.7.002117
Publication status	Published - 2017

Bibliographical note

Publisher Copyright:
© 2017 Optical Society of America.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

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10.1364/OME.7.002117

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title = "Programmable dual electrochromism in azine linked conjugated polymer",

abstract = "A conjugated polymer consisting of tri-EDOT and azine groups was synthesized and explored for a programmable dual electrochromic device. Electrochemical doping (oxidation) and de-doping (reduction) resulted in the two distinct redox pairs, depending on the applied potential range. In situ spectroelectrochemical analyses revealed that the stepwise redox process of two units was associated with dual electrochromic responses: tri-EDOT unit for purple electrochromism followed by azine unit for blue electrochromism. Dual electrochromism of purple and blue was attainable at below 1.0 V which could induce the color transition upon the potential application of around ± 1 V. Maximum coloration efficiency of 393 cm2/C with a response time of 1 s was obtained.",

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T1 - Programmable dual electrochromism in azine linked conjugated polymer

AU - Han, Minsu

AU - Poduval, Mithrabinda K.

AU - Shin, Haijin

AU - Tamaoki, Nobuyuki

AU - Park, Taiho

AU - Kim, Yuna

AU - Kim, Eunkyoung

PY - 2017

Y1 - 2017

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AB - A conjugated polymer consisting of tri-EDOT and azine groups was synthesized and explored for a programmable dual electrochromic device. Electrochemical doping (oxidation) and de-doping (reduction) resulted in the two distinct redox pairs, depending on the applied potential range. In situ spectroelectrochemical analyses revealed that the stepwise redox process of two units was associated with dual electrochromic responses: tri-EDOT unit for purple electrochromism followed by azine unit for blue electrochromism. Dual electrochromism of purple and blue was attainable at below 1.0 V which could induce the color transition upon the potential application of around ± 1 V. Maximum coloration efficiency of 393 cm2/C with a response time of 1 s was obtained.

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Programmable dual electrochromism in azine linked conjugated polymer

Abstract

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