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• W2593671432 endingPage "5519" @default.
• W2593671432 startingPage "5503" @default.
• W2593671432 abstract "The divergent synthesis of two series of borazino-doped polyphenylenes, in which one or more aryl units are replaced by borazine rings, is reported for the first time, taking advantage of the decarbonylative [4 + 2] Diels–Alder cycloaddition reaction between ethynyl and tetraphenylcyclopentadienone derivatives. Because of the possibility of functionalizing the borazine core with different groups on the aryl substituents at the N and B atoms of the borazino core, we have prepared borazino-doped polyphenylenes featuring different doping dosages and orientations. To achieve this, two molecular modules were prepared: a core and a branching unit. Depending on the chemical natures of the central aromatic module and the reactive group, each covalent combination of the modules yields one exclusive doping pattern. By means of this approach, three- and hexa-branched hybrid polyphenylenes featuring controlled orientations and dosages of the doping B3N3 rings have been prepared. Detailed photophysical investigations showed that as the doping dosage is increased, the strong luminescent signal is progressively reduced. This suggests that the presence of the B3N3 rings engages additional deactivation pathways, possibly involving excited states with an increasing charge-separated character that are restricted in the full-carbon analogues. Notably, a strong effect of the orientational doping on the fluorescence quantum yield was observed for those hybrid polyphenylene structures featuring low doping dosages. Finally, we showed that Cu-catalyzed 1,3-dipolar cycloaddition is also chemically compatible with the BN core, further endorsing the inorganic benzene as a versatile aromatic scaffold for engineering of molecular materials with tailored and exploitable optoelectronic properties." @default.
• W2593671432 created "2017-03-16" @default.
• W2593671432 creator A5005053668 @default.
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• W2593671432 creator A5091543433 @default.
• W2593671432 date "2017-04-04" @default.
• W2593671432 modified "2023-10-16" @default.
• W2593671432 title "Borazino-Doped Polyphenylenes" @default.
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• W2593671432 doi "https://doi.org/10.1021/jacs.7b01477" @default.
• W2593671432 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28276248" @default.
• W2593671432 hasPublicationYear "2017" @default.
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