The preparation of high quality crystalline covalent organic framework (COF) films without polymer contamination and controllable thickness is desirable for optoelectronic applications. Here, the authors report a diffusion-limited synthesis strategy for wafer-scale COF films with a controlled structure, thickness, patterning, and crystallization degree based on the adjustment of the precursor building block films.
- Minghui Liu
- Junhua Kuang
- Jianyi Chen
