Bacterial infection has become the major problem shared by all countries around the world at present, especially, bacterial biofilm and medical implant-associated infections become even more difficult to eradicate by their robust matrix structure, making them 1000-fold more resistant to conventional antibiotics. Therefore, it appears necessary to carry out a potent antibacterial polymeric coating with excellent antibacterial and antibiofilm performance with low coat as well as good biocompatibility. In this work, we report an innovative strateg...