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Graphite‐like carbon nitride nanosheets (g‐C3N4) have been attracted considerable attention for their applications in catalysis and electrochemiluminesence (ECL) sensor. In this paper, a facile solvothermal method was employed to prepare the functionalized nanocomposites with metal salts cadmium carbonate (CdCO3) and g‐C3N4 hybrids (g‐C3N4‐CdCO3). The prepared materials were characterized by scanning electron microscope (SEM), X‐ray energy dispersive spectroscopy (EDX) and Fourier transform infrared spectra (FTIR). The nanocomposites was used not only as a new type luminophore but also as a chiral selector in this simple and sensitive ECL chiral sensor system for the recognition and detection of propranolol (Pro) enantiomers via quenching effect. The obvious difference of ECL signal of S‐Pro and R‐Pro was obtained. Thus, the sensor had the ability to distinguish Pro enantiomers. The mechanism of recognition was discussed by the theoretical calculation of binding constant and the water contact angle experiments. The sensor for Pro enantiomers was developed at wide concentration range from 0.001 to 1 mmol⋅L−1. The sensor with excellent sensitivity, stability and reproducibility provide a new strategy based on ECL for chiral recognition and the ECL chiral sensor. [ABSTRACT FROM AUTHOR]

A novel, stable, solid-state and stereoselective electrochemiluminescence (ECL) sensor has been designed to enantioselectively discriminate ascorbic acid (AA) and isoascorbic acid (IAA) by immobilizing Ru(bpy)32+ (Ru), thiolated β-cyclodextrin (β-CD-SH) and gold/platinum hybrid nanoparticles supported on multiwalled carbon nanotube/silica coaxial nanocables (GP-CSCN) on glassy carbon electrode. All chemical compounds could be immobilized on the surface of electrode stably through nafion film, and high stereoselectivity could be introduced to the sensor via the synergistic effects of the β-CD-SH and GP-CSCN nanomaterials. When the developed sensor interacted with AA and IAA, obvious difference of ECL intensities was observed, and a larger intensity was obtained from AA, which indicated that this strategy could be employed to enantioselectively recognize AA and IAA. As a result, ECL technique might act as a promising method for recognition of chiral compounds. [ABSTRACT FROM AUTHOR]