Zirconium dioxide as electrochemiluminescence emitter for D-dimer determination based on dual-quenching sensing strategy

Signal “On-Amplified-Off” Strategy Based on Hafnium Dioxide Nanomaterials as Electrochemiluminescence Emitters for Progesterone Detection

“…The experimental results provided positive evidence supporting the ECL mechanism of HfO 2 . Drawing upon experimental observations and prior research, the ECL mechanism of HfO 2 had been postulated. , Specifically, when a positive potential was applied to the electrode, the loss of electrons from TPrA and HfO 2 yielded TPrA + and HfO 2 + , respectively (eqs and ). The former was subsequently deprotonated to engender TPrA free radicals, denoted as TPrA • (eq ).…”

Bandgap-Regulated Electrochemiluminescence Enhancement Strategy for Florfenicol Detection Based on ZrCuO3: A Multimodal Luminophore

“…As shown in Figure F, the current value started to increase around 1 V. The anodic ECL signal of ZrCuO 3 was approximately 6000 au (Figure E). Based on previous literature, the proposed mechanism for the anodic ECL of ZrCuO 3 was as follows: TPrA and ZrCuO 3 were oxidized separately (eqs and ), and the oxidation product TPrA •+ underwent deprotonation to generate the intermediate TPrA • (eq ). TPrA • further reacted with ZrCuO 3 •+ to reach ZrCuO 3 * (eq ), which subsequently released energy to generate the ECL signal (eq ).…”

“…Zr-based oxides, primarily zirconia (ZrO 2 ), have found extensive applications in various domains owing to their excellent biocompatibility, catalytic activity, and photochemical reactivity. − The cathode and anode ECL properties of ZrO 2 have been successively reported. , However, the report has shown that the ECL efficiency of ZrO 2 is not satisfactory. One of the possible reasons is that the bandgap energy of ZrO 2 is large, which limits the ability of electrons to move within its lattice, thereby affecting the excitation and emission efficiency of electrons.…”

Synergistic Multieffect Catalytic Amplified Cathodic Electrochemiluminescence Biosensor via Target Binding-Induced Aptamer Conformational Changes for the Ultrasensitive Detection of Synthetic Cathinone

“…Electrochemiluminescence (ECL) is becoming the latest generation technology after photoluminescence and chemiluminescence, making it a viable alternative for trace substance detection on account of its fast response and high sensitivity compared with traditional detection technology. − Li and her team designed a dual-signal ECL platform for the ultrasensitive and highly selective detection of kanamycin . In addition, Li et al constructed a novel ECL sensing system based on the nonmetallic surface plasmon resonance (SPR) effect, which exhibited excellent stability and reproducibility as well as good practicality for miRNA-21 detection .…”

“…10.1021/acsami.3c12201. Reagents; equipment; preparation of CuCo 2 O 4 nanorods; elemental mapping analyses of Cu, Co, Ag elements in Ag@CuCo 2 O 4 ; FT-IR spectra of PTCA-Analytical Data of the 4-CEC e-Cigarette Samples with the As-Developed Approach (n = 3) ; electrochemical luminescence and fluorescence spectra emission spectra of PTCA-COF; XRD spectra of PTCA-COF, CuCo 2 O 4 , and Ag@CuCo 2 O 4 ; zeta potential of GCE; CV of GCE; CD spectra of aptamer probe in buffer before and after binding with cathinone; optimization of mass ratio of Ag@CuCo 2 O 4 to PTCA-COF, the concentration of K 2 S 2 O 8, the concentration of aptamer, and incubation time of ECL aptasensor; the structural formula of NPS; repeatability of biosensor and 4-CEC detection by 6 parallel measurements; long-term storage stability of the designed sensor; and the comparison of different methods to determine synthetic cathinones (PDF)…”