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dc.contributor.authorLunchev, Andrey V.en
dc.contributor.authorHendrarta, Vincent Chandraen
dc.contributor.authorJaggi, Aparnaen
dc.contributor.authorMorris, Samuel Alexanderen
dc.contributor.authorGanguly, Rakeshen
dc.contributor.authorChen, Xiaoxuanen
dc.contributor.authorSun, Handongen
dc.contributor.authorGrimsdale, Andrew Cliveen
dc.identifier.citationLunchev, A. V., Hendrarta, V. C., Jaggi, A., Morris, S. A., Ganguly, R., Chen, X., et al. (2018). A Friedländer route to 5,7-Diazapentacenes. Journal of Materials Chemistry C, in press.en
dc.description.abstractA route to compounds with a 5,7-diazapentacene skeleton has been established involving a Friedländer reaction. A diaminodiketone 8 has been made by a novel method and reacted with cyclohexanone to prepare an octa-hydro-5,7-diazapentacene 7a and with tetralone to produce a dibenzotetrahydro-5,7-diazapentacene 7b. Reaction of the diaminodiketone with a diarylethanone followed by oxidation gave a tetrabenzo-5,7-diazapentacene 18b. Compound 7b undergoes solid-state dimerization during single-crystal X-ray analysis. These materials possess lower frontier orbitals than pentacene and show strong absorption and fluorescence which is affected by the presence of acid. In particular 18b shows a remarkable colour change in solution upon addition of acid. These results suggest that suitably functionalised 5,7-diazapentacenes could be promising candidates for optoelectronic applications.en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent9 p.en
dc.relation.ispartofseriesJournal of Materials Chemistry Cen
dc.rights© 2018 Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Materials Chemistry C, Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].en
dc.subjectOrganic Semiconductorsen
dc.titleA Friedländer route to 5,7-Diazapentacenesen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.description.versionAccepted versionen
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