A new stepwise-pressing reaction method for synthesizing pure turbostractic boron nitride

A new stepwise-pressing reaction method is proposed, by which pure and near monodisperse turbostractic boron nitride (tBN) nano-particles with high yield (higher than 92%) are selectively synthesized via reacting BBr3 and (CH3)3N at 260 °C in benzene. The obtained sample emits a strong photoluminescence band at 346 nm (under a excitation of 215 nm), making tBN a promising candidate for fabricating UV photoelectronic devices.