نتایج جستجو برای: charge transfer complexation

تعداد نتایج: 421391  

Journal: :Acta pharmaceutica 2016
Moamen S Refat Hosam A Saad Abdel Majid A Adam Mohamed A Al-Omar Ahmed M Naglah

The topic of charge-transfer (CT) complexation of vital drugs has attracted considerable attention in recent years owing to their significant physical and chemical properties. In this study, CT complexes derived from the reaction of the anti-hyperuricemic drug allopurinol (Allop) with organic p-acceptors [(picric acid (PA), dichlorodicyanobenzoquinone (DDQ) and chloranil (CHL)] were prepared, i...

2005
Roberto Quesada Philip A. Gale

The selective complexation of cationic species was the earliest goal of supramolecular chemistry and continues to attract effort and interest. Over the last five years, Gunnlaugsson and co-workers at Trinity College Dublin have produced a wide variety of colorimetric sensors for ions, nucleic acids and oligonucleotides. In 2004, this group reported the synthesis of a colorimetric sensor for Cu(...

Journal: :Science 2002
H Linnartz D Verdes J P Maier

Difficulties in preparing cluster ions for spectroscopic studies have limited our understanding of intermolecular forces in charged complexes that are typical of many reactive intermediates. Here, the infrared spectrum of the charge transfer complex [Ar-N2]+, recorded in a supersonic planar plasma with a tunable diode laser spectrometer, is presented. More than 70 adjacent rovibrational transit...

Journal: :iranian journal of pharmaceutical research 0
gehad genidy mohamed chemistry department, faculty of science, cairo university mahmoud sabry rizk chemistry department, faculty of science, cairo university eman y.z. frag chemistry department, faculty of science, cairo university

the purpose of this investigation was directed to propose sensitive, accurate and reproducible methods of analysis that can be applied to determine distigmine bromide (dtb), cyclopentolate hydrochloride (cphc), diaveridine hydrochloride (dvhc) and tetrahydrozoline hydrochloride (thhc) drugs in pure form and pharmaceutical preparations via charge-transfer complex formation with 7,7,8,8-tetracyan...

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