Facile preparation of novel Au–polydopamine nanoparticles modified by 4-mercaptophenylboronic acid for use in a glucose sensor†
Abstract
Au nanoparticles were attached to the surface of polydopamine (PDA) macrospheres by an in situ reduction reaction between PDA and HAuCl4. 4-Mercaptophenyl boronic acid (MPBA) was then modified to form Au–PDA composite particles via a strong Au–S interaction. The resultant MPBA–Au–PDA particles were used in a non-enzyme amperometric glucose sensor.