Cubic boron nitride, a synthetic material, comes in at second place. That is, until researchers got their hands on an alternate crystal structure of boron nitride and observed a unique atomic bond ...

The second type involves small molecules where the acid-base pair exists within the same molecular structure ... for Lewis base sites as well asfor the amorphous silicon nitride (a-SiN) matrix.

The heptazine-based polymer melon (also known as graphitic carbon nitride, g-C 3 N 4) is a promising photocatalyst for hydrogen evolution. Nonetheless, attempts to improve its inherently low ...