Gold nanoparticles in biosensing analyses

Abstract

Monitoring biomolecular interactions has become a constituent element of various medical and clinical applications. The importance of measuring the biomolecular interaction is evident as a potpourri of sensing strategies is currently and continuously devised. One of the strategies that can immensely enhance the sensitivity of the interaction is the one mediated by nanoparticles. Among the various nanoparticles, gold nanoparticle (AuNP) is opted for due to its capacity to improve the sensitivity and selectivity of biomolecular interactions. In addition to this, AuNP is easy to be manufactured, chemically inert, have uniform dispersibility and are able to react with chemically modified biomolecules. In this overview, the roles adopted by AuNP in various biosensing applications are discussed.