نتایج جستجو برای: sulfonic acid based precursors sap
تعداد نتایج: 3621907 فیلتر نتایج به سال:
Stable porphyrin based porous polymer networks, PPN-23 and PPN-24, have been synthesized through a facile one-pot approach by the aromatic substitution reactions of pyrrole and aldehydes. PPN-24(Fe) shows high catalytic efficiency as a biomimetic catalyst in the oxidation reaction of 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) in the presence of H2O2.
In this paper theoretical study by using DFT method on three conjugated compound based on 2-styryl-5-phenylazo-pyrrole is reported. These dyes contain one carboxy, two carboxy and one sulfonic acid anchoring groups, the aim is to investigate their effects on the electronic structure. The theoretical knowledge of the HOMO and LUMO energy levels of the components is cannot be ignored in investiga...
Back Cover: In article number 2100836, Shijie Ren, Bien Tan, and co-workers utilize the electrostatic interaction between aniline sulfonic acid groups to introduce polyaniline (PANI) into porous structures of hollow microporous organic capsules with sulfonated hypercrosslinkedpolymer-based shells (S-HMOCs). Combining high surface area PANIfunctionalized frameworks, resulting composites, PANI@S-...
Perfluoroalkyl acids (PFAAs) are a group of persistent organic substances that are surface active and water and fat/oil repellent. Due to the wide use and persistence of PFAAs they are present everywhere in the environment, and humans are exposed via food, drinking water and the use of products containing PFAAs and related compounds. We investigated blood serum levels of ten perfluoroalkyl carb...
Soybean plants can fix atmospheric N2 in the root nodule, a symbiotic organ with rhizobia. The primary forms of N transported from fixation are ureides, allantoate, and allantoin, supplemented asparagine. nitrate absorbed roots is to shoots NO3− asparagine little portion ureides. concentrations N-metabolites were analyzed by capillary electrophoresis after supplying various urea, precursors all...
نانو تنگستن تری اکسید عامل دار شده با سولفونیک اسید (nano-wo3-supported sulfonic acid) برای اولین بار به عنوان یک کاتالیزور اسیدی جامد جهت ساخت آسان مشتقات پیریمیدینون از طریق واکنش سه جزیی سیکلوپنتانون، بنزالدهید و اوره/تیواوره در شرایط بدون حلال به کار گرفته شد. زمان واکنش کوتاه، جداسازی آسان و بازده بالای محصولات از مزایای روش ارائه شده می باشد.
sulfonic acid functionalized sba-15 (sba-pr-so3h) as a new nanoporous acid catalyst was used in the one-pot synthesis of polyhydroquinolines derivatives via the hantzsch four component condensation reaction of aldehydes, b-ketoesters, dimedone and ammonium acetate under solvent free conditions with short reaction time in excellent yields. sba-pr-so3h was proved to be an efficient heterogeneous ...
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