Question

A tunable azine covalent organic framework platform for visible light-induced hydrogen generation

Answer 1

$\mathfrak{\huge{\pink{\underline{\underline{AnswEr :}}}}}$

» Covalent organic frameworks (COFs) present an interesting new class of photoactive materials, which combine three key features relevant to the photocatalytic process, namely crystallinity, porosity and tunability.

» Here we synthesize a series of water- and photostable 2D azine-linked COFs from hydrazine and triphenylarene aldehydes with varying number of nitrogen atoms.

» The electronic and steric variations in the precursors are transferred to the resulting frameworks, thus leading to a progressively enhanced light-induced hydrogen evolution with increasing nitrogen content in the frameworks