Isomeric protected dipeptides generated stable bio-compatible gold nanoparticles

It has been observed that two isomeric protected dipeptides which show altered nano-morphologies under similar conditions but behave unaltered to form stable gold nano-particles (AuNPs) having similar shape and size; whereas both the peptides showed fluctuating bio-compatibility but after conjugation with AuNP they show stable bio-compatibility. These gold nano conjugates are very stable, even up to 2 months the AuNPs showed no change in size or shape. Using a straightforward and reproducible one-pot synthetic technique, we were able to produce stable biocompatible gold nanoparticles using two isomeric protected dipeptides.