نتایج جستجو برای: 12 phenylenediamine

تعداد نتایج: 582123  

Journal: :Bulletin of the Chemical Society of Japan 1982

Journal: :Bulletin of the Chemical Society of Japan 1982

Journal: :Plant physiology 1977
C F Yocum J A Guikema

Incubation of spinach chloroplast membranes for 90 minutes in the presence of 50 mm KCN and 100 mum HgCl(2) produces an inhibition of photosystem I activity which is stable to washing and to storage of the chloroplasts at -70 C. Subsequent exposure of these preparations to NH(2)OH and ethylenediaminetetraacetic acid destroys O(2) evolution and flow of electrons from water to oxidized p-phenylen...

Journal: :The Analyst 2011
Jingqi Tian Hailong Li Wenbo Lu Yonglan Luo Lei Wang Xuping Sun

The chemical oxidation polymerization of m-phenylenediamine (MPD) by ammonium persulfate (APS) at room temperature results in the formation of poly(m-phenylenediamine) (PMPD) microparticles. The subsequent treatment of such microparticles with an aqueous AgNO(3) solution produces Ag nanoparticle (AgNP)-decorated PMPD microparticles. It was found that as-formed AgNPs exhibited remarkable catalyt...

2011
Lei Wang Yingwei Zhang Jingqi Tian Hailong Li Xuping Sun

In this article, we report on the facile and rapid synthesis of conjugation polymer poly(p-phenylenediamine) nanobelts (PNs) via room temperature chemical oxidation polymerization of p-phenylenediamine monomers by ammonium persulfate in aqueous medium. We further demonstrate the proof-of-concept that PNs can be used as an effective fluorescent sensing platform for nucleic acid detection for the...

Journal: :The Biochemical journal 1970
J Mowbray J H Ottaway

1. Conditions favouring the condensation of o-phenylenediamine with alpha-oxo acids to form substituted quinoxalines have been investigated. The best yields (85-100%) are obtained by incubation of the reagents in 2m-hydrochloric acid. Substitution of acetic acid for hydrochloric acid, or of halogen-substituted 1,2-diaminobenzenes for phenylenediamine, increases the initial rate of reaction, but...

Journal: :Plant physiology 1970
S B Wilson W D Bonner

The effects of phenylethylbiguanidide, decamethylenediguanidide, and octylguanidine have been studied with mung bean hypocotyl mitochondria (Phaseolus aureus var. Jumbo) supplied with malate, reduced nicotinamide adenine dinucleotide, succinate, or ascorbate-tetramethyl-p-phenylenediamine as substrates. The guanidines act as energy transfer inhibitors, all three inhibiting all three phosphoryla...

Journal: :iranian journal of catalysis 2015
eshagh rezaee nezhad saaid karimian

ni2+ supported on hydroxyapatite-core@shell γ-fe2o3 nanoparticles (γ-fe2o3@hap-ni2+) was found to be a useful catalyst for the synthesis of benzimidazole derivatives from o-phenylenediamine and aldehydes under solvent and solvent-free conditions at 80 °c. this reaction affords the corresponding benzimidazole derivatives compared with the classical reactions this method consistently gives a high...

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