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One-Shot Multiple Borylation toward BN-Doped Nanographenes

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posted on 09.11.2017, 14:33 by Kohei Matsui, Susumu Oda, Kazuki Yoshiura, Kiichi Nakajima, Nobuhiro Yasuda, Takuji Hatakeyama
One-shot double, triple, and quadruple borylation reactions of triaryl­amines were developed through a judicious choice of boron source and Brønsted base. With the aid of borylation reactions, a variety of BN-doped nanographenes were synthesized in two steps from commercially available starting materials. An organic light-emitting diode device employing BN-doped nanographene as an emitter exhibited deep pure-blue emission at 460 nm, with CIE coordinates of (0.13, 0.11), and an external quantum efficiency of 18.3%.