In situ growth of a cobalt porphyrin-based covalent organic framework on multi-walled carbon nanotubes for ultrasensitive real-time monitoring of living cell-released nitric oxide

Due to the synergy of atomic-level periodic structural features of COF-366-Co and high conductivity of MWCNTs, a MWCNTs@COF-366-Co electrochemical biosensor has been successfully used to sensitively monitor NO released from HUVECs.