Synthesis of cyclodextrin-reduced graphene oxide hybrid nanosheets for sensitivity enhanced electrochemical determination of diethylstilbestrol

Electrodeposited gold dendrites at reduced graphene oxide as an electrocatalyst for nitrite and glucose oxidation

“…The detailed synthetic procedure of RGO-CD hybrid nanosheets is found elsewhere [19,32]. Briefly, 20 mL of GO (2 mg/mL) was ultra-sonicated for 2 h to yield a yellowish brown dispersion.…”

Design of a reduced-graphene-oxide composite electrode from an electropolymerizable graphene aqueous dispersion using a cyclodextrin-pyrrole monomer. Application to dopamine biosensing

“…Reduced graphene oxide (RGO) was prepared by reducing graphene oxide according to previously-described procedures using ascorbic acid as a reducing agent [18,21].…”

A novel sandwich-type noncompetitive immunoassay of diethylstilbestrol using β-cyclodextrin modified electrode and polymer–enzyme labels

“…Owing to its unique structure, b-CD can easily form stable host-guest complex with certain organic molecules wherein the organic molecule fits into the hydrophobic cavity of b-CD [15,16]. Zhang et al used b-CD functionalized reduced graphene oxide hybrid nanosheets (b-CD-RGO) for separating and enrichment of DES: b-CD-RGO is a host-guest complex in which hybrid nanosheets of RGO get attached to the hydrophobic cavities of b-CD [8]. Da Silva et al developed a biosensor for phenolic compounds containing polyphenol oxidase in b-CD modified support and iridium nanoparticles.…”

“…Kang et al proposed that b-CD modified hybrid magnetic nanoparticles Fe 3 O 4 @SiO 2 act as separable, immobilized catalyst and adsorbent, because these nanoparticles exhibited remarkably dominant adsorption capacity in the removal of biphenol A from aqueous solutions [19]. Moreover, there are two phenol groups in DES, b-CD can selectively combine with one phenol group of DES [8], while the DES antibody can combine with another phenol group [20,21]. Therefore, b-CD and antibody of DES can be simultaneously employed in fabricating a sandwich-type noncompetitive immunoassay to recognize DES.…”

“…High-performance liquid chromatography (HPLC) [5,6], chemiluminescence [7] are conventionally used for performing ultra-trace level analysis of DES, but these analytical methods are not very suitable for rapidly screening in food samples [8][9][10][11]. Electrochemical enzyme-linked immunoassay (ECI) is a highly sensitive technique that exhibits enhanced electrochemical catalytic ability.…”