The development of high-performance electrochemical biosensors is limited by the lack of robust methods for creating well-controlled biointerfaces. Here, the authors present i-eY-Click, a rapid (<3 min), tyrosine-selective electrochemical method for covalently immobilizing native proteins under mild conditions. Applied to carbon microelectrode arrays, it forms well-controlled antibody layers and enhances cytokine sensing, improving sensitivity, detection limits, and reproducibility.
- Kaixin Song
- Yinghuan Liu
- Ying Jiang