Structure elucidation of polyheptazine imide by electron diffraction-a templated 2D carbon nitride network

摘要

Structure elucidation of a condensed carbon(iv) nitride with a stoichiometry close to C_3N_4 by electron diffraction reveals a two-dimensional planar heptazine-based network containing isolated melamine molecules in the trigonal voids.rnOwing to their exceptional chemical stability and hardness, nitrides of main group elements have entered the stage as ubiquitous light-weight, high-performance materials relevant to a multitude of technological applications. Although 3D phases of binary carbon nitride C_3N_4 hold promise as new ultra-hard materials, the layered polymorph, graphitic carbon nitride (g-C_3N_4) has recently garnered attention for its versatile optical, electronic and tribological properties apt to being exploited in solar cell, sensor and transistor technologies. Moreover, hydrogen-rich graphitic carbon nitride materials are currently unfolding their potential as metal-free heterogeneous catalysts and hold promise as electron-rich organic semiconductors.