A novel high-contrast ratio electrochromic material from spiro[cyclododecane-1,9'-fluorene]bicarbazole

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dc.contributor.authorUsluer O.
dc.contributor.authorKoyuncu S.
dc.contributor.authorDemic S.
dc.contributor.authorJanssen R.A.J.
dc.date.accessioned2019-10-27T08:34:02Z
dc.date.available2019-10-27T08:34:02Z
dc.date.issued2011
dc.departmentEge Üniversitesien_US
dc.description.abstractA novel electroactive spirocyclododecylfluorene monomer named 2,7-bis(carbazol-9-yl)-9,9'-spiro[cyclododecane-1,9'-fluorene] (SFC) was synthesized and electrochemically polymerized to give a very stable multi-electrochromic polymer (poly-SFC). Two separate oxidation processes were observed for both SFC monomer and poly-SFC that carries two carbazole units. The polymeric film of poly-SFC was coated onto ITO/glass surface, and it shows different colors (transparent, yellowish green, green, and dark green) upon stepwise oxidations. An electrochromic device based on poly-SFC was assembled in the sandwich cell configuration of ITO/poly-SFC//gel electrolyte//PEDOT/ITO. Poly-SFC exhibits 90% of transparency at neutral state and a high contrast ratio (ÎT = 58% at 800 nm). This device constructed from it represents a response time of about 1 s, high coloration efficiency (1377 cm2 C-1) and retained its performance by 96.4% even after 1000 cycles. Exhibiting high transparency at neutral state, reversible redox behavior, resistance to overoxidation, and especially high contrast ratio at near IR region can make poly-SFC be useful and promising candidate for electrochromic applications despite having a relatively slow response time. © 2010 Wiley Periodicals, Inc.en_US
dc.identifier.doi10.1002/polb.22190
dc.identifier.endpage341en_US
dc.identifier.issn0887-6266
dc.identifier.issn0887-6266en_US
dc.identifier.issue5en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage333en_US
dc.identifier.urihttps://doi.org/10.1002/polb.22190
dc.identifier.urihttps://hdl.handle.net/11454/26951
dc.identifier.volume49en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Polymer Science, Part B: Polymer Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcarbazoleen_US
dc.subjectconducting polymersen_US
dc.subjectcrosslinkingen_US
dc.subjectelectrochemistryen_US
dc.subjectelectrochromic polymersen_US
dc.titleA novel high-contrast ratio electrochromic material from spiro[cyclododecane-1,9'-fluorene]bicarbazoleen_US
dc.typeArticleen_US

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