Extremely Sensitive Molecularly Imprinted ECL Sensor with Multiple Probes Released from Liposomes Immobilized by a Light-Triggered Click Reaction

A molecularly imprinted electrochemiluminescence sensor was prepared for sensitive and selective determination of aminotriazole via a novel strategy of multiple Ru(bpy)(3)Cl-2 probes released from liposomes immobilized by a light-triggered click reaction. This sensing strategy provides a platform for trace detection of aminocontaining pesticides. The target on the molecularly imprinted membrane connected to the Ru(bpy)(3)Cl-2-encapsulated liposomes via the click reaction. After the destabilizing agent Triton X-100 was added, numerous Ru(bpy)(3)Cl-2 molecules were released by liposomes on the molecularly imprinted polymer electrode. The ECL response of the sensor was linearly proportional to the logarithm of the aminotriazole concentration ranging from 5.00 x 10(-18) to 1.00 x 10(-12) mol/L, and the detection limit was 1.15 x 10(-18) mol/L. The sensitivity of the detection was significantly improved, and the analysis process was simplified.

Automated summary

A molecularly imprinted electrochemiluminescence sensor was developed for sensitive and selective detection of aminotriazole using a novel strategy of multiple Ru(bpy)(3)Cl-2 probes released through a light-triggered click reaction, improving detection sensitivity and simplifying the analysis process for aminocontaining pesticides.