A Novel High-Contrast Ratio Electrochromic Material from Spiro[cyclododecane-1,9 '-fluorene]bicarbazole

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dc.contributor.authorUsluer, Ozlem
dc.contributor.authorKoyuncu, Sermet
dc.contributor.authorDemic, Serafettin
dc.contributor.authorJanssen, Rene A. J.
dc.date.accessioned2019-10-27T21:24:57Z
dc.date.available2019-10-27T21:24:57Z
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 (Delta T = 58% at 800 nm). This device constructed from it represents a response time of about 1 s, high coloration efficiency (1377 cm(2) 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. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 49: 333-341, 2011en_US
dc.description.sponsorshipState Planning Organization of Turkey (DPT); Ege University Research Funds OfficeEge University; Scientific and Technical Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [104T191]en_US
dc.description.sponsorshipWe acknowledge the supports from the State Planning Organization of Turkey (DPT) and Ege University Research Funds Office. S. Demic is also grateful to Scientific and Technical Research Council of Turkey (TUBITAK, project #: 104T191) for financial support. The authors acknowledge the efforts of Dr. B. F. M. de Waal and R. A. A. Bovee (Eindhoven University of Technology) for MALDI-TOF.en_US
dc.identifier.doi10.1002/polb.22190
dc.identifier.endpage341en_US
dc.identifier.issn0887-6266
dc.identifier.issn1099-0488
dc.identifier.issn0887-6266en_US
dc.identifier.issn1099-0488en_US
dc.identifier.issue5en_US
dc.identifier.startpage333en_US
dc.identifier.urihttps://doi.org/10.1002/polb.22190
dc.identifier.urihttps://hdl.handle.net/11454/44708
dc.identifier.volume49en_US
dc.identifier.wosWOS:000287258500002en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherWiley-Blackwellen_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.subjectconducting polymersen_US
dc.subjectcrosslinkingen_US
dc.subjectelectrochemistryen_US
dc.subjectelectrochromic polymersen_US
dc.subjectcarbazoleen_US
dc.titleA Novel High-Contrast Ratio Electrochromic Material from Spiro[cyclododecane-1,9 '-fluorene]bicarbazoleen_US
dc.typeArticleen_US

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