Journal
CHEMICAL SCIENCE
Volume 6, Issue 9, Pages 5144-5151Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc01800e
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Funding
- Cambridge Display Technology
- EPSRC [EP/J000973/1, EP/K03099X/1]
- European Research Council (FP/ERC Grant) [305868]
- Royal Society
- Innovate UK
- Engineering and Physical Sciences Research Council [EP/J003921/1, EP/K03099X/1, 1711498, EP/J000973/1, EP/H004408/1] Funding Source: researchfish
- EPSRC [EP/H004408/1, EP/J003921/1, EP/K03099X/1, EP/J000973/1] Funding Source: UKRI
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Electrophilic borylation using BCl3 and benzothiadiazole to direct the C-H functionalisation of an adjacent aromatic unit produces fused boracyclic materials with minimally changed HOMO energy levels but significantly reduced LUMO energy levels. In situ alkylation and arylation at boron using Al(alkyl)(3) or Zn(aryl)(2) is facile and affords boracycles that possess excellent stability towards protic solvents, including water, and display large bathochromic shifts leading to far red/NIR emission in the solid state with quantum yields of up to 34%. Solution fabricated OLEDs with far red/NIR electroluminescence are reported with EQEs > 0.4%.
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