Herbicidal ionic liquid with dual functions has been synthesized and characterized (properties, chemical stability and biological activity). 2-Chloroethyltrimethylammonium (4-chloro-2-methylphenoxy)acetate prepared in an alkaline environment undergoes the reaction of dehydrochlorination by the E2 mechanism. This may be described as a specific instance of providing third generation ILs with high potential of application, which preserve both pesticidal properties: the herbicidal activity due to their anions and plant growth inhibition effect due to their cations. (C) 2013 Elsevier Ltd. All rights reserved.
PROBLEM TO BE SOLVED: To provide prodrugs of stereodefined oligonucleotides to impart additional stability to oligonucleotide molecules in many in-vitro and in-vivo applications.SOLUTION: A nucleic acid prodrug has a structure represented by the formula (1), where each instance of Ba is independently a blocked or unblocked adenine, cytosine, guanine, thymine, uracil or modified nucleobase.
作者:Yanyan Li、Liting Lin、Jie Yang、Kun Qian、Tao Jiang、Hong Li
DOI:10.1039/d0ra08795e
日期:——
The luminescence of dielectric phase transition materials is one important property for technological applications, such as low-energy electron excitation.
介电相变材料的发光性是技术应用中的一个重要特性,例如低能电子激发。
ENZYME IMMOBILIZATION FOR ELECTROOSMOTIC FLOW
申请人:Dordick S. Jonathan
公开号:US20070000781A1
公开(公告)日:2007-01-04
Disclosed herein is a method and apparatus of immobilizing a biocatalyst on a microfluidic biochip for conducting reactions in the presence of electroosmotic flow. The biochip includes a polymer on its microfluidic flow surfaces, wherein the polymer includes a first substituent selected from ionic groups of the same polarity or precursors thereof, a second substituent that is a hydrophobic group, and a third substituent comprising an immobilized biocatalyst- or precursor thereof. The biochip can be used to conduct multiple sequential biocatalyzed reactions in the presence of electroosmotic flow.
Verfahren zur Herstellung von (2-Chlorethyl)-ammoniumchloriden
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP0753504A2
公开(公告)日:1997-01-15
Verfahren zur Herstellung von (2-Chlorethyl)-ammoniumchloriden der allgemeinen Formel I
in der R1, R2, R3 Wasserstoff, C1- bis C8-Alkyl, C5- bis C8-Cycloalkyl, Aryl, C7- bis C12-Aralkyl bedeuten, durch Umsetzung von 1,2-Dichlorethan mit einem Amin der allgemeinen Formel II
in der R1, R2, R3 die oben genannten Bedeutungen haben, bei Temperaturen von 50 bis 200°C, indem man 1,2-Dichlorethan mit dem Amin II bei Temperaturen von 50 bis 100°C mischt und an-schließend die Temperatur stufenweise oder fortlaufend auf 120 bis 200°C erhöht, insbesondere die Reaktionstemperatur erhöht, nachdem ein 85%iger Trimethylamin-Umsatz erreicht ist.
Pellicle, method of preparing the same and exposure method
申请人:Mitsui Chemicals, Inc.
公开号:EP0989457A2
公开(公告)日:2000-03-29
A pellicle that excellently transmits ultraviolet rays and, particularly, vacuum ultraviolet rays, does not lose the film thickness thereof that stems from the photolysis and, hence, exhibits excellent light resistance. The pellicle is obtained by using, as a material of pellicle film, an impurity-free organic polymer obtained by treating an organic polymer to remove at least a portion of at least any one of, preferably, a majority portion of trace amount-metal components, high molecular components and incomplete molecular structure components contained in the organic polymer. The invention further provides a method of preparing a pellicle.