Acidic pH and thiol-driven homogeneous cathodic electrochemiluminescence strategy for determining the residue of organophosphorus pesticide in Chinese cabbage

Non-enzymatic signal-on electrochemiluminescence detection of organophosphorus pesticides based on tungsten disulfide quantum dots

“…So far, the majority of ECL sensors for OP detection relied on the inhibition of the activity of acetylcholinesterase (AChE) by OPs. [8][9][10] This inhibition alters the ECL intensity of systems using K 2 S 2 O 8 or H 2 O 2 as the coreactant, [11][12][13][14] creating an indirect correlation between ECL response and OP concentration. However, the stability and cost of these sensors are limited by bio-enzymes, and accuracy can be compromised by false negatives in the "signal-off" mode.…”

“…to form the excited state (WS 2 QD*, eqn(7)). The relaxation of WS 2 QD* to the ground state gives off ECL (eqn(8)) with an elevated intensity of 3574 cps. Scanning potential towards more negative values generates more WS 2 QD •− , which increases WS 2 QD* and results in ECL evolution.…”

Ligand-Based Shielding Effect Induced Efficient Near-Infrared Electrochemiluminescence of Gold Nanoclusters and Its Sensing Application

“…Electrochemiluminescence (ECL), a neoteric light emission driven by electrochemical stimulation in the vicinity of the electrode, , presenting the merits of high sensitivity, simplified operation, and excellent controllability, has been widely used in diverse applications, most notably in light-emitting devices, − imaging microscopy, − as well as fields of food analysis, − environment monitoring, − and clinical diseases diagnosis. , To give increased impetus for the evolution of ECL applications, exploitation of high-performing ECL emitters as one crucial stepping stone plays a pivotal role. Compared with classical ECL emitters (Ru­(bpy) 3 2+ , luminol, etc .…”