“…Electrochemical sensors, especially amperometric biosensors, hold a leading position among various biosensors. In the case of amperometric biosensor, the effective immobilization of an enzyme on an electrode surface with a high retention of its biological activity is a crucial point for the commercial development of biosensors [5,6]. To improve the immobilization efficiency, many immobilization methods, including physical adsorption [7], covalent or cross-linking [8], self-assembly [9], and electrodeposition [10] have been developed.…”