Neutral state colorless electrochromic polymer networks: Spacer effect on electrochromic performance

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dc.authoridAcar, Metin Hayri/0000-0001-8953-1905
dc.authoridKoyuncu, Sermet/0000-0001-8352-8326
dc.contributor.authorGulfidan, Damla
dc.contributor.authorSefer, Emre
dc.contributor.authorKoyuncu, Sermet
dc.contributor.authorAcar, Metin H.
dc.date.accessioned2025-01-27T20:52:04Z
dc.date.available2025-01-27T20:52:04Z
dc.date.issued2014
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractA series of carbazole-based monomers and their corresponding polymers with various spacer units were synthesized and coated onto ITO-glass surface via an electrochemical cross-linking process. All carbazole-based polymers exhibited multi-electrochromic behavior thanks to two separate oxidation processes. All materials were characterized by FT-IR. H-1 NMR, GPC, DSC, UV-vis, Florescence and CV. In addition, electrochromic properties of the cross-linked polymer films were investigated via spectro-electrochemical measurements. The colorless films were converted to yellowish green and greenish blue colors at the anodic regime. The results indicate that the spacer unit between the carbazole unit and the polymer backbone has a great impact on the optical and electrochemical properties and also on the electrochromic performance of these polymers. PVBEC with benzyloxy based spacer exhibits a high contrast ratio (Delta T% = 55 at 690 nm), a faster response time of about 2.1 s, a higher coloration efficiency (331 cm(2) C-1) and a better stability (retains its performance by 94.3% even after 1000 cycles). (C) 2014 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipResearch Foundation of Istanbul Technical University [34046]
dc.description.sponsorshipThe financial support from Research Foundation of Istanbul Technical University (34046) is gratefully acknowledged.
dc.identifier.doi10.1016/j.polymer.2014.09.041
dc.identifier.endpage6005
dc.identifier.issn0032-3861
dc.identifier.issn1873-2291
dc.identifier.issue23
dc.identifier.scopus2-s2.0-84908453162
dc.identifier.scopusqualityQ1
dc.identifier.startpage5998
dc.identifier.urihttps://doi.org/10.1016/j.polymer.2014.09.041
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25650
dc.identifier.volume55
dc.identifier.wosWOS:000345310100019
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofPolymer
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectElectrochromic polymers
dc.subjectCarbazole
dc.subjectSpacer effect
dc.titleNeutral state colorless electrochromic polymer networks: Spacer effect on electrochromic performance
dc.typeArticle

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