Electrochromic polymer based on a rigid cyanobiphenyl substituted 3,4-ethylenedioxythiophene
DSpace at IIT Bombay
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Title |
Electrochromic polymer based on a rigid cyanobiphenyl substituted 3,4-ethylenedioxythiophene
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Creator |
KRISHNAMOORTHY, K
KANUNGO, MANDAKINI CONTRACTOR, AQ ANIL KUMAR |
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Subject |
electropolymerization
electric conductivity light emitting diodes optical switches |
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Description |
A cyanobiphenyl substituted 3,4-ethylenedioxythiophene (EDOT) derivative was synthesized in order to test the hypothesis that a bulkier substituent leads to better contrast in electrochromic polymers based on alkylenedioxythiophenes. Electropolymerization of this derivative resulted in the formation of a highly electroactive and well-adhered polymeric film on the electrode surface. Spectroelectrochemical studies indicated that the polymer switches from a highly transmissive state in the oxidized form to an opaque dark-blue in the reduced state. Optical switching studies showed that the polymer films could be fully switched between its reduced and oxidized form in ca. 0.4–1.0 s with a ΔT% of 67%. In situ conductivity studies showed a sharp transition from insulating state to the conducting state at around −0.5 V with maximum in situ conductivity of 0.03 S/cm.
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Publisher |
Elsevier
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Date |
2009-02-24T07:19:40Z
2011-11-25T17:39:31Z 2011-12-26T13:06:24Z 2011-12-27T05:54:13Z 2009-02-24T07:19:40Z 2011-11-25T17:39:31Z 2011-12-26T13:06:24Z 2011-12-27T05:54:13Z 2001 |
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Type |
Article
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Identifier |
Synthetic Metals 124(2-3), 471-475
0379-6779 http://dx.doi.org/10.1016/S0379-6779(01)00396-4 http://hdl.handle.net/10054/755 http://dspace.library.iitb.ac.in/xmlui/handle/10054/755 |
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Language |
en
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