论文部分内容阅读
A highly sensitive and selective two-photon sensing scheme for detection of cartap was developed by using Au@Ag bimetallic core-shell nanoparticles.Cartap was found to induce the aggregation of Au@Ag nanoparticles and up to 700-fold enhancement in two-photon photoluminescence.Huge enhancement in two-photon photoluminescence allows achieving a detection limit of as low as 0.0062 mg/kg,which is better than the conventional colorimetric methods.This two-photon sensing scheme has a broad dynamic range and displays excellent selectivity in detection of cartap against over other ten kinds of commonly used insecticides.
A highly sensitive and selective two-photon sensing scheme for detection of cartap was developed by using Au @ Ag bimetallic core-shell nanoparticles. Cartap was found to induce the aggregation of Au @ Ag nanoparticles and up to 700-fold enhancement in two-photon photoluminescence.Huge enhancement in two-photon photoluminescence allows achieving a detection limit of as low as 0.0062 mg / kg, which is better than the conventional colorimetric methods. two-photon sensing scheme has a broad dynamic range and displays excellent selectivity in detection of cartap against over ten ten kinds of commonly used insecticides.