Yang, S., W. Hu, X. Zhang, P. He, B. Pattengale, C. Liu, M. Cendejas, I. Hermans, X. Zhang, J. Zhang, and J. Huang. “2D Covalent Organic Frameworks As Intrinsic Photocatalysts for Visible Light-Driven CO2 Reduction”. Journal of the American Chemical Society, Vol. 140, 2018.