Open access
Oct 2026
In situ synthesis of gold nanoparticles using tryptophan enantiomers for determination of enantiomeric composition
This paper reports a simple one-step colorimetric method for distinguishing l- and d-tryptophan based on the in situ formation of gold nanoparticles (AuNPs) in the presence of Cu2+. The tryptophan enantiomers act as both reducing and stabilizing agents, generating different nanoparticle aggregation behaviors and visibl...
Rozhin Radmanesh, M. Ahmadi, T. Madrakian et al.
· RSC Advances · 0 citations