A Circular Dichroism Probe for <scp>L</scp>‐Cysteine Based on the Self‐Assembly of Chiral Complex Nanoparticles

Abstract

Silver-assisted detection: A novel circular dichroism (CD) method was described for detecting L-cysteine in biological fluids on the basis of chiral nanoparticle self-assembly from AgI and L-cysteine (see graphic). The method allows highly selective and sensitive detection of L-cysteine in biological fluids at the μM level without the need for any special synthesis or sample pretreatment other than an appropriate dilution.