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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3301
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dc.contributor.authorKarthik D.-
dc.contributor.authorThomas K.R.J.-
dc.contributor.authorJou J.-H.-
dc.contributor.authorChen Y.-L.-
dc.date.accessioned2020-10-06T14:26:15Z-
dc.date.available2020-10-06T14:26:15Z-
dc.date.issued2016-
dc.identifier.citationDyes and Pigments (2016), 133(): 132-142-
dc.identifier.issn1437208-
dc.identifier.urihttps://doi.org/10.1016/j.dyepig.2016.05.046-
dc.identifier.urihttp://repository.iitr.ac.in/handle/123456789/3301-
dc.description.abstractNew organic luminescent materials containing carbazole and benzimidazole chromophores were synthesized by tethering them together using thiophene or phenyl spacer. Both 3,6- and 2,7-disubstitutions were explored. The functional properties of the new materials were analyzed by photophysical, electrochemical, thermal and electroluminescence properties. The thiophene containing dyes showed red-shifted absorption and emission profiles than that of the phenyl analogs due to effective electronic delocalization in the former. Also, the thiophene-based dyes exhibited low oxidation potentials than that of the phenyl analogs attributable to electron richness. Electroluminescence devices were fabricated using these dyes as emitting layer or dopant in a multi-layered configuration. The devices containing thiophene-based dyes showed relatively low turn-on voltage in the neat devices due to the favorable alignment of energy levels, which facilitated balanced charge transport. A thiophene-based dye exhibited better performance in the series with external quantum efficiency as high as 1.5%. © 2016 Elsevier Ltd.-
dc.language.isoen_US-
dc.publisherElsevier Ltd-
dc.relation.ispartofDyes and Pigments-
dc.subjectBenzimidazole-
dc.subjectCarbazole-
dc.subjectElectroluminescence-
dc.subjectOrganic dyes-
dc.subjectPhotophysical properties-
dc.subjectThiophene-
dc.titleSynthesis, characterization and electroluminescence of carbazole-benzimidazole hybrids with thiophene/phenyl linker-
dc.typeArticle-
dc.scopusid57195605812-
dc.scopusid57203389297-
dc.scopusid35083609400-
dc.scopusid56484852800-
dc.affiliationKarthik, D., Organic Materials Chemistry, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247 667, India-
dc.affiliationThomas, K.R.J., Organic Materials Chemistry, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247 667, India-
dc.affiliationJou, J.-H., Department of Material Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan-
dc.affiliationChen, Y.-L., Department of Material Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan-
dc.description.fundingFinancial support from CSIR (Ref. No. 02/(0230)/15/EMR-II dated 05-06-2015), New Delhi to KRJT is gratefully acknowledged and DST for HRMS facility via FIST Program to the Chemistry Department. DK thanks UGC , New Delhi for research fellowship. Appendix A-
dc.description.correspondingauthorThomas, K.R.J.; Organic Materials Chemistry, Department of Chemistry, Indian Institute of Technology RoorkeeIndia; email: krjt8fcy@iitr.ac.in-
Appears in Collections:Journal Publications [CY]

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