Enantiopure Water-Soluble [Fe<sub>4</sub>L<sub>6</sub>] Cages: Host-Guest Chemistry and Catalytic Activity
作者:Jeanne L. Bolliger、Ana M. Belenguer、Jonathan R. Nitschke
DOI:10.1002/anie.201302136
日期:2013.7.29
Inside information: The new enantiopurecage molecule ΔΔΔΔ‐Fe4L6 (and its enantiomer, ΛΛΛΛ‐Fe4L6) was prepared by subcomponent self‐assembly. It binds a range of organic guests (A, see scheme) in its cavity and distinguishes between the enantiomers of a chiral organic guest. Host ΔΔΔΔ‐Fe4L6 is also a catalyst for the hydrolysis (giving B and C) of the neurotoxic organophosphate dichlorvos.
Reduction of Dichlorvos and Omethoate Residues by O<sub>2</sub> Plasma Treatment
作者:Yanhong Bai、Jierong Chen、Hui Mu、Chunhong Zhang、Baoping Li
DOI:10.1021/jf900995d
日期:2009.7.22
A practical, inexpensive, and green chemical process is greatly needed for degrading pesticides in food and environmental water. In this work, the impact of O-2 plasma treatment on reduction of dichlorvos (DDVP) and omethoate in maize was determined by gas chromatography (GC). The main plasma-induced degradation mechanisms were investigated through identification of intermediates or products during O-2 plasma treatment for DDVP and omethoate on solid surfaces by gas chromatography/mass spectrometry (GC/MS). The results clearly demonstrate that O-2 plasma treatment is significantly effective in the degradation of original DDVP and omethoate, and the degradation efficiency mainly depends upon related operating parameters and chemical structures of pesticides. Moreover, GUMS analyses show that DDVP and omethoate molecules are degraded into less-toxic compounds, and the plasma degradation mechanisms for pesticides can be dominated by a free-radical reaction. It is concluded that O-2 plasma has the potential to reduce pesticide residues in agricultural products.
Krutikov, V. I.; Naidenov, A. V.; Palagina, T. V., Journal of general chemistry of the USSR, 1988, vol. 58, # 9, p. 1839 - 1841
作者:Krutikov, V. I.、Naidenov, A. V.、Palagina, T. V.、Lebedev, V. B.、Lavrent'ev, A. N.