scholarly journals Nano Synthesis and Characterization of Complex Derived from Silver Metal Conjugated with Midodrine Hydrochloride

2021 ◽  
Vol 37 (1) ◽  
pp. 157-161
Author(s):  
Namita Bharadwaj ◽  
Jaishri Kaushik
Keyword(s):  
Stability Constant ◽  
Silver Nanoparticle ◽  
Metal Ion ◽  
Ratio Method ◽  
Synthesis And Characterization ◽  
Face Centered Cubic ◽  
Uv Visible ◽  
Face Centered ◽  
The Stability

The stability constant Kf for the complexation of Ag(Ⅰ) metal ion with Midodrine hydrochloride were determinedby spectrophotometric method at room temperature .The colored complexes were measured at 300 nm. The stability constant of the complexes were found to be 5.47 by mole ratio method. The stoichiometry of the complexes formed between the Midodrine drug and Ag (Ⅰ) metal ion are 1:1 M/L ratio. Silver conjugated Midodrine hydrochloride Nano synthesized and characterized by UV/Visible spectroscopy, SEM, XRD and FT-IR. The UV/Visible spectra of Midodrine –Ag nanoparticle in the range of 322 nm. XRD conformThe crystallite size of Midodrine - Ag (Ⅰ) nanoparticles are found to be 64.5 nmfrom Debye Scherer formula.Thecrystallinity of nanoparticles is Face centered cubic structure. SEM conform of particle size and surface morphology, FTIR analyzed involvement of -NH2 group in Midodrine is the stabilized of silver nanoparticle. This research is focuses on complexation, Nano synthesis and characterization of Drug-silver nanoparticle for antihypotention therapy.

Synthesis and Characterization of the Face-Centered Cubic Clusters [(Me3tacn)8M8Pt6(CN)24]12+ (M = Cr, Mo)

2007 ◽  
Vol 18 (3) ◽  
pp. 575-596 ◽  
Author(s):  
Lianne M. C. Beltran ◽  
Jennifer J. Sokol ◽  
Jeffrey R. Long
Keyword(s):  
Synthesis And Characterization ◽  
Face Centered Cubic ◽  
The Face ◽  
Face Centered

Synthesis and Characterization of Silver Nanowires

2013 ◽  
Vol 678 ◽  
pp. 212-216
Author(s):  
Subbaiyan Sugapriya ◽  
Rangarajalu Sriram ◽  
Sriram Lakshmi
Keyword(s):  
Silver Nanowires ◽  
Synthesis And Characterization ◽  
Face Centered Cubic ◽  
Capping Agent ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Face Centered ◽  
Fcc Structure

ABSTRACT Silver nanowires have been synthesized by polyol process with ethylene glycol as solvent and PVP as capping agent. The silver nanowires have been characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), and Transmission electron microscope (TEM) techniques. The prepared silver nanowires were found to exhibit face-centered cubic (fcc) structure. The diameter of the prepared silver nanowires have been found to lie in the range of 60 - 80 nm and the length of the wires have been observed to be in the range of 10-20 µm. The I-V characteristics have been carried out to study the conducting behavior of the prepared silver nanowires.

Synthesis and Characterization of Ru Cubic Nanocages with a Face-Centered Cubic Structure by Templating with Pd Nanocubes

Nano Letters ◽  
2016 ◽  
Vol 16 (8) ◽  
pp. 5310-5317 ◽  
Author(s):  
Ming Zhao ◽  
Legna Figueroa-Cosme ◽  
Ahmed O. Elnabawy ◽  
Madeline Vara ◽  
Xuan Yang ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Face Centered Cubic ◽  
Cubic Structure ◽  
Face Centered

Synthesis and Characterization of New Triazole Ligand with Some Transition Metals

2021 ◽  
Vol 19 (7) ◽  
pp. 137-143
Author(s):  
Maream Mamoon ◽  
Suad T. Saad ◽  
Nour Abd Alrazzak
Keyword(s):  
Schiff Base ◽  
Metal Ion ◽  
Visible Spectrum ◽  
Synthesis And Characterization ◽  
Divalent Metal Ions ◽  
Cobalt Nickel ◽  
Nickel Copper ◽  
Atomic Absorption Technique ◽  
Uv Visible

The work includes synthesis and characterization of new ligand and its complexes with divalent metal ions such as cobalt, nickel, copper and zinc. This project includes firstly, the synthesis of Schiff base by reacting P-aminoacetophenone with 2-amino-6-methylpyridine by the reflux reaction for 6 hr. and at 70 ° C. The second step involves the synthesis azo-Schiff base containing ligand which was prepared by the reaction of the Schiff base with the heterocyclic 1,2,4-triazole. The prepared ligand was characterized using spectroscopic methods such as Infrared spectrum, UV-visible spectrum, 1HNMR and 13CNMR spectrum. In the third step, the ligand complexes were prepared by the reaction between the ligand and the metal ion salts to obtain the related metal complex. Some properties of the prepared compounds were studied such as the solubility. The prepared complexes were characterized using IR spectroscopy, UV-Visible, conductivity, magnetic sensitivity, and the atomic absorption technique was used to determine the percentage of each metal in its complex.

Synthesis and Characterization of Novel High Entropy Alloys

2020 ◽  
Vol 978 ◽  
pp. 167-173
Author(s):  
Anil Kumar ◽  
B. Vinith ◽  
Aditya Kumar Choudhary ◽  
Manoj Kumar Chopkar
Keyword(s):  
Mechanical Alloying ◽  
Synthesis And Characterization ◽  
Mixing Enthalpy ◽  
Valence Electron Concentration ◽  
High Entropy Alloys ◽  
Face Centered Cubic ◽  
High Entropy ◽  
Cubic Structure ◽  
Face Centered

High entropy alloys (HEAs) generally exhibit either high resistance to deformation or high toughness due to the presence of body-centered or face-centered cubic structure, respectively. To overcome these limitations, new high entropy alloys have been developed in the present study. This investigation aims to synthesis and characterization of novel CoCrFeNi3Si, CoCrFe2Ni2Si, and Co2CrFeNi2Si high entropy alloys. The mechanical alloying route is used to synthesize these alloys. Grinding was carried out to 20h and X-ray diffraction (XRD) analysis was done at different time intervals of grinding. The face-centered cubic structure along with the intermetallic compound of Ni-Si was observed after 20h of grinding. Furthermore, a pseudo binary strategy based on the valence electron concentration and mixing enthalpy is also employed to design the high entropy alloys considered in the present study. Carefully analysis of the XRD pattern indicates that from 5 to 20h of mechanical alloying there is a decrement in the initial peaks of elements observed.

scholarly journals Azocalix[4]arene with three distal ethyl ester residues as a highly selective chromogenic sensor for Ca2+ ions

2018 ◽  
Vol 24 (3) ◽  
pp. 147-150
Author(s):  
Jie Wang ◽  
Hongyu Guan ◽  
Chunhua Ge ◽  
Ping Fan ◽  
Xijuan Xing ◽  
...  
Keyword(s):  
Stability Constant ◽  
Metal Ions ◽  
Ethyl Ester ◽  
Metal Ion ◽  
Visible Spectroscopy ◽  
Binding Properties ◽  
Metal Ion Complexation ◽  
Specific Selectivity ◽  
Uv Visible ◽  
The Stability

AbstractThree azocalix[4]arenes with distal ethyl ester residues, 5-phenylazo-25,26,27-tris[(ethoxycarbonyl)methoxy]-28-hydroxycalix[4]arene (2), 5-(o-methylphenyl)azo-25,26,27-tris[(ethoxycarbonyl)methoxy]-28-hydroxycalix[4]arene (3), 5-(p-Methylphenyl)azo-25,26,27-tris[(ethoxycarbonyl)methoxy]-28-hydroxycalix[4]arene (4), were synthesized and their binding properties with metal ions were investigated by ultraviolet (UV)/visible spectroscopy. The chromogenic behavior of these compounds upon metal ion complexation indicates a specific selectivity toward Ca2+ ion in the presence of other cations tested. The stoichiometry of 3 to Ca2+ ion in the complex is 1:1 and the stability constant of the complex is 1.28×104m−1.

Structure of the complexes of ethylenediphosphinetetraacetic acid in solution

1985 ◽  
Vol 50 (2) ◽  
pp. 445-453 ◽  
Author(s):  
Jana Podlahová ◽  
Josef Šilha ◽  
Jaroslav Podlaha
Keyword(s):  
Metal Ion ◽  
Carboxyl Groups ◽  
Complex Solution ◽  
Square Planar ◽  
Weak Complexes ◽  
Carboxylic Groups ◽  
Uv Visible ◽  
The Stability ◽  
Tetrahedral Complexes ◽  
Free Carboxyl

Ethylenediphosphinetetraacetic acid is bonded to metal ions in aqueous solutions in four ways, depending on the type of metal ion: 1) through an ionic bond of the carboxylic groups to form weak complexes with a metal:ligand ratio of 1 : 1 (Ca(II), Mn(II), Zn(II), Pb(II), La(III)); 2) through type 1) bond with contributions from weak interaction with the phosphorus (Cd(II)); 3) through coordination of the ligand as a monodentate P-donor with the free carboxyl groups with formation of 2 : 1 and 1 : 1 complexes (Cu(I), Ag(I)); 4) through formation of square planar or, for Hg(II), tetrahedral complexes with a ratio of 1 : 2 with the ligand as a bidentate PP-donor with the free carboxyl groups (Fe(II), Co(II), Ni(II), Pd(II), Pt(II)). On acidification of the complex solution, the first two protons are bonded to the carboxyl groups. The behaviour during further protonation depends on the type of complex: in complexes of types 1) and 2) phosphorus is protonated and the complex dissociates; in complexes of types 3) and 4) the free carboxyl groups are protonated and the phosphorus-metal bond remains intact. The results are based on correlation of the stability constants, UV-visible, infrared, 1H and 31P NMR spectra and magnetic susceptibilities of the complexes in aqueous solution.

Synthesis and characterization of silver nanoparticle nanocomposite thin films with thermally induced surface morphology changes

2015 ◽  
Vol 159 ◽  
pp. 118-121 ◽  
Author(s):  
Ernandes T. Tenório-Neto ◽  
Marcos R. Guilherme ◽  
Manuel E.G. Winkler ◽  
Lucio Cardozo-Filho ◽  
Stéphani C. Beneti ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Morphology ◽  
Silver Nanoparticle ◽  
Synthesis And Characterization ◽  
Thermally Induced ◽  
Nanocomposite Thin Films ◽  
Morphology Changes
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