Colorimetric Determination of Amino Acids using Fluorescent Copper Nanoparticle

Abstract

Among the 20 amino acids, cysteine plays a major role in communication of the cells, especially towards immune system and thus developing sensor for cysteine is very important to understand the status of the human health. Copper nanoparticles decorated with Rhodamine B (RBCN) have the potential to detect the biologically important species such as amino acids, especially cysteine. RBCN has been previously has demonstrated for the sensing of host molecules such as cucurbituril based on the relative binding potential of rhodamine B on the surface of copper nanoparticles. Based on that concept, now we have developed the sensor for amino acids, especially for the cysteine