title: Self-assembly of L-cysteine for chiral recognition of mandelic acid in gas phase.
abstract: This study demonstrates a new approach for the selective recognition of chiral mandelic acid by quartz crystal microbalance (QCM) using L-cysteine as the selector. The modification of L-cysteine on the QCM sensor was identified using resonant frequency detection, the contact angle, cyclic voltammetry, and X-ray photoelectron spectroscopy measurements. The chiral recognizability of L- and D-MA on the L-cysteine-modified surface was examined using QCM detection integrated with a vapor diffused molecular assembly reaction technique. The present chiral recognition results suggest that the L-cysteine is a good resolving agent for detecting chiral mandelic acid.
authors: Department of Chemistry, Shaoguan University, Shaoguan 512005, China.
authors: Hui-Shi
authors: HS
authors: Guo
authors: Xiao-Yu
authors: XY
authors: Han
authors: Woo-Sik
authors: WS
authors: Kim
mesh_terms: D003545:Cysteine / Q000737:chemistry*; D004566:Electrodes; D008333:Mandelic Acids / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D011791:Quartz; D013237:Stereoisomerism
chemical_list: D008333:Mandelic Acids; D011791:Quartz; D003545:Cysteine; C037938:mandelic acid