Details

Autor(en) / Beteiligte

• Gou, Hao
• He, Jingxian
• Mo, Zunli
• Wei, Xiaojiao
• Hu, Rere
• Wang, Yawei

Titel

An electrochemical chiral sensor for tryptophan enantiomers based on reduced graphene oxide/1,10-phenanthroline copper(ii) functional composites

Ist Teil von

• RSC advances, 2015-01, Vol.5 (74), p.6638-6645

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An electrochemical chiral sensor based on reduced graphene oxide (RGO) non-covalently functionalized with 1,10-phenanthroline copper( ii ) (PhenCu) complex has been developed for electrochemical discrimination of tryptophan (Trp) enantiomers. The formation and morphology of reduced graphene oxide/1,10-phenanthroline copper( ii ) (RGO/PhenCu) composites were confirmed by Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Cyclic voltammetry (CV) was employed to monitor the electrochemical behavior of RGO/PhenCu immobilized on glassy carbon electrode (RGO/PhenCu/GCE). The reduction in peak current was significantly different when the chiral sensor interacted with l -Trp and d -Trp. This suggested that RGO/PhenCu/GCE could be used as an electrochemical chiral sensor for the discrimination of Trp enantiomers. Further studies showed that the peak current decreased linearly along with an increasing percentage of l -Trp in the Trp mixture. The RGO/PhenCu/GCE electrochemical chiral sensor, with rapid recognition, good sensitivity and high stability, provided an efficient method to recognize and discriminate Trp enantiomers. An electrochemical chiral sensor based on reduced graphene oxide (RGO) non-covalently functionalized with 1,10-phenanthroline copper( ii ) (PhenCu) complex has been developed for electrochemical discrimination of tryptophan (Trp) enantiomers.