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Updated: Jul 31, 2026

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A Hybrid BN-Doped Nanographene with Narrow Emission Bandwidths for OLEDs
Vyacheslav V Diev1, Yunlong Zou1, Denis Kondakov1
1DuPont Specialty Products USA LLC, Experimental Station, Wilmington, DE, 19803, USA.
Abstract:
We describe synthesis of BN-doped nanographene containing five phenylene units, boron and nitrogen atoms with alternating ortho-disposition, as well as direct B-N connections. Resulting BN doped nanographene exhibits blue fluorescence at 441 nm with an extraordinarily narrow fluorescence peak with a full width at half maximum (FWHM)=10-11 nm. Crystallography reveals supramolecular organization of this compound in the crystal phase. Initial organic light emitting device (OLED) data suggest that the presence of a directly connected B-N isostere can lead to devices with sufficiently long lifetime as well as narrow emission electro-luminescence peaks necessary for OLED applications.
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