Sulfoxaflor and the sulfoximine insecticides: Chemistry,mode of action and basis for efficacy on resistant insects

The sulfoximines, as exemplified by sulfoxaflor ([N-[methyloxido[1-[6-(trifluoromethyl)-3-pyridinyl]ethyl]-λ⁴-sulfanylidene] cyanamide] represent a new class of insecticides. Sulfoxaflor exhibits a high degree of efficacy against a wide range of sap-feeding insects, including those resistant to neonicotinoids and other insecticides. Sulfoxaflor is an agonist at insect nicotinic acetylcholine receptors (nAChRs) and functions in a manner distinct from other insecticides acting at nAChRs. The sulfoximines also exhibit structure activity relationships (SAR) that are different from other nAChR agonists such as the neonicotinoids. This review summarizes the sulfoximine SAR, mode of action and the biochemistry underlying the observed efficacy on resistant insect pests, with a particular focus on sulfoxaflor.     

AM-OLED像素驱动电路的研究

由于有源像素驱动电路克服了无源像素驱动电路所带来的驱动电流大、OLED器件寿命短、发光效率低等缺点,近几年来被广泛的看好。本文主要对有源矩阵像素单元电路进行了分析,并针对其缺点进行了适当改进,最后通过Hspice仿真验证可行性。