▎ 摘　　要

An electrochemical sensor was constructed via self-assembly of chiral metal complexes Lambda-[Os(phen)(3)(ClO4)(2)] on reduced graphene oxide (rGO) sheet. Cyclic voltammetry and differential pulse voltammetry illustrate that the sensor could detect 1,1'-2-binaphthol lower than 10 mu M. The response current of S-1,1'-2-binaphthol is 1.4 times higher than that of R-1,1'-2-binaphthol. A linear concentration range was attained for the response peak current. In comparison to clay/indium tin oxide substrate based chiral sensor, rGO has clearly enhanced the sensitivity of chiral sensing. Preliminary measurement indicates that the rGO/Lambda-[Os(phen)(3)](2+) sensor can also be applied to determine compositions of a chiral mixture. (C) 2011 Elsevier B.V. All rights reserved.