Organic light emitting diodes (OLED) based on helical structures containing 7-membered fused rings

2015
journal article
article
cris.lastimport.wos2024-04-09T22:12:51Z
dc.abstract.enThree novel isomeric helical molecules 2-methoxy-m,n-dimethyl-6-phenyl-6H-5,6,7-triazadibenzo[f,h]naphtho[3,2,1-cd]azulenes (m,n = 8,9; 8,10; 9,10), derived from alkylated 1H-pyrazolo[3,4-b]quinoline halides, were synthesized. Their twisted structures containing a seven-membered ring help to sustain a glassy state, which enables a film of good quality to be formed. All compounds exhibit distinct glass transition temperatures (98, 100 and 113 °C, respectively). The racemization barrier of the dyes is rather low, ∼25 kcal/mol. In consequence the compounds were obtained as racemic mixtures, both in solution and crystalline state. The helical structure of azulenes can be clearly seen from their crystal structures; however the racemates belong to centrosymmetric space groups. Finally, the helical dyes were successfully applied as a direct light emitting layer in OLED cell. The configuration of the devices: ITO/PEDOT:PSS/azulene/Ca/Al, emitting greenish-yellow light with CIE coordinates (0.44, 0.54) is reported.pl
dc.affiliationWydział Chemii : Zakład Krystalochemii i Krystalofizykipl
dc.contributor.authorSzlachcic, Pawełpl
dc.contributor.authorDanel, Krzysztof S.pl
dc.contributor.authorGryl, Marlena - 141879 pl
dc.contributor.authorStadnicka, Katarzyna - 132048 pl
dc.contributor.authorUsatenko, Zoryanapl
dc.contributor.authorNosidlak, Nataliapl
dc.contributor.authorLewińska, Gabrielapl
dc.contributor.authorSanetra, Jerzypl
dc.contributor.authorKuźnik, Wojciechpl
dc.date.accessioned2015-07-02T10:00:27Z
dc.date.available2015-07-02T10:00:27Z
dc.date.issued2015pl
dc.description.admin[AB] Stadnicka, Katarzyna [SAP11004149] 50000141pl
dc.description.physical184-195pl
dc.description.volume114pl
dc.identifier.doi10.1016/j.dyepig.2014.10.021pl
dc.identifier.eissn1873-3743pl
dc.identifier.issn0143-7208pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/11187
dc.languageengpl
dc.language.containerengpl
dc.rights.licencebez licencji
dc.subtypeArticlepl
dc.titleOrganic light emitting diodes (OLED) based on helical structures containing 7-membered fused ringspl
dc.title.journalDyes and Pigmentspl
dc.typeJournalArticlepl
dspace.entity.typePublication
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