A new type of surface-enhanced Raman scattering sensor for the enantioselective recognition of d/l-cysteine and d/l-asparagine based on a helically arranged Ag NPs@homochiral MOF.

For the first time, we report the synthesis of Ag nanoparticles (NPs) arranged in a helical structure on a chiral metal-organic framework via a facile process at room temperature. This material can serve as a new type of surface-enhanced Raman scattering sensor for the efficient recognition of d/l-cysteine and d/l-asparagine enantiomers.