Electrochromic and electroluminescent devices based on a novel branched quasi-dendric fluorene-carbazole-2,5-bis(2-thienyl)-1H-pyrrole system

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dc.contributor.authorKoyuncu, Sermet
dc.contributor.authorUsluer, Ozlem
dc.contributor.authorCan, Mustafa
dc.contributor.authorDemic, Serafettin
dc.contributor.authorIcli, Siddik
dc.contributor.authorSariciftci, Niyazi Serdar
dc.date.accessioned2019-10-27T21:26:28Z
dc.date.available2019-10-27T21:26:28Z
dc.date.issued2011
dc.departmentEge Üniversitesien_US
dc.description.abstractWe report here the synthesis of a novel branched quasi-dendric system, 9,9'-(9,9'-dihexylfluorene-2,7-diyl)bis[3,6-bis(2,5-bis(2-thienyl) pyrrol-1-yl)carbazole], (FCSNS), in four steps, followed by coating onto an ITO-coated glass surface by an electropolymerization process to give a very stable cross-linked polymeric film (poly-FCSNS). The yellowish-green color of this film in its neutral state changed reversibly to black upon oxidation. An electrochromic device, assembled in the sandwich configuration [ITO/anodically coloring polymer (poly-FCSNS)//gel electrolyte//cathodically coloring polymer/(PEDOT)/ITO], exhibited a relatively short response time (about 1 s), a high redox stability, and a high coloration efficiency (1624 cm(2) C-1). In addition to electrochromic studies, organic light-emitting diode (OLED) work was also carried out using FCSNS. A multilayer OLED having a configuration of ITO/PEDOT:PSS/FCSNS/Alq(3)/LiF : Al was fabricated, and it showed a turn-on voltage of approximately 6 V and exhibited a bright green emission with a luminance of 3700 cd m(-2). The maximum luminous efficiency was found to be 2.0 cd A(-1) at 14 V and 11.75 mA cm(-2). The emitted light from the OLED device is green, and has the color coordinates of (x, y) (0.33, 0.54) according to CIE. Electrochemical and optical properties were also studied by using cyclic voltammetry, UV-Vis absorption and fluorescence spectroscopy, respectively.en_US
dc.description.sponsorshipEge UniversityEge University; Canakkale Onsekiz Mart University Research Funds OfficeCanakkale Onsekiz Mart University; Scientific and Technical Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [104T191]en_US
dc.description.sponsorshipWe acknowledge the support from Ege University, Canakkale Onsekiz Mart University Research Funds Office. S. Demic is also grateful to the 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-TOFs.en_US
dc.identifier.doi10.1039/c0jm02366c
dc.identifier.endpage2693en_US
dc.identifier.issn0959-9428
dc.identifier.issn1364-5501
dc.identifier.issn0959-9428en_US
dc.identifier.issn1364-5501en_US
dc.identifier.issue8en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage2684en_US
dc.identifier.urihttps://doi.org/10.1039/c0jm02366c
dc.identifier.urihttps://hdl.handle.net/11454/44967
dc.identifier.volume21en_US
dc.identifier.wosWOS:000287092000041en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherRoyal Soc Chemistryen_US
dc.relation.ispartofJournal of Materials Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleElectrochromic and electroluminescent devices based on a novel branched quasi-dendric fluorene-carbazole-2,5-bis(2-thienyl)-1H-pyrrole systemen_US
dc.typeArticleen_US

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