Metal ion retention using the ultrafiltration technique: Preparation, characterization of the water-soluble poly(1-vinyl-2-pyrrolidone-co-itaconic acid) and its metal complexes in aqueous solutions

2008 ◽  
Vol 108 (6) ◽  
pp. 3982-3989 ◽  
Author(s):  
Guadalupe del C. Pizarro ◽  
Oscar G. Marambio ◽  
Manuel Jeria-Orell ◽  
Margarita R. Huerta ◽  
Bernabé L. Rivas ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Metal Complexes ◽  
Itaconic Acid ◽  
Metal Ion ◽  
Water Soluble ◽  
Soluble Poly

Application of a synthetic water-soluble poly( N -maleyl glycine- co -acrylamide) as polychelatogen for inorganic ions in aqueous solutions

1998 ◽  
Vol 41 (6) ◽  
pp. 687-694 ◽  
Author(s):  
G. del C. Pizarro ◽  
O. G. Marambio ◽  
B. L. Rivas ◽  
K. E. Geckeler
Keyword(s):  
Aqueous Solutions ◽  
Inorganic Ions ◽  
Water Soluble ◽  
Soluble Poly ◽  
Synthetic Water

Synthesis and Characterization of Photopolymerized Multifunctional Hydrogels:  Water-Soluble Poly(Vinyl Alcohol) and Chondroitin Sulfate Macromers for Chondrocyte Encapsulation

2004 ◽  
Vol 37 (18) ◽  
pp. 6726-6733 ◽  
Author(s):  
Stephanie J. Bryant ◽  
Kelly A. Davis-Arehart ◽  
Ning Luo ◽  
Richard K. Shoemaker ◽  
Jeffrey A. Arthur ◽  
...  
Keyword(s):  
Chondroitin Sulfate ◽  
Vinyl Alcohol ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Poly Vinyl Alcohol ◽  
Soluble Poly

Synthesis and Characterization of Ligand and its Metal Complexes

2011 ◽  
Vol 699 ◽  
pp. 273-279
Author(s):  
A. Xavier ◽  
R Sathya ◽  
D. Usha ◽  
P.S. Harikrishnan
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Metal Ion ◽  
Wave Number ◽  
Lower Wave Number ◽  
Strong Absorption Band ◽  
Ir Studies ◽  
Stretching Vibration ◽  
Ft Ir

A series of metal complexes have been synthesized by the reaction of Schiff base with metal (II) salt solution. The complexes were characterized by UV and FT- IR studies. The study reveals that the geometry of the complexes were octahedral. The electronic spectra of these complexes show a strong absorption band in 550 – 580 nm region. This confirms the coordination of ligand with metal. The FT-IR shows a very strong band at 1606cm-1 assigned to C=N stretching vibration. It is shifted to lower wave number because of the complex formation, suggesting that coordination of the Schiff base groups through N- atoms with the metal ion. The band at 3056cm-1 is due to aromatic O-H stretching, the sharp peak at 750 cm-1 and 688 cm-1 are due to halogens substituted in the para position.

scholarly journals The Zn- or Cu-Thionein Character of a Metallothionein Determines Its Metal Load When Synthesized in Physiological (Metal-Unsupplemented) Conditions

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Mercè Capdevila ◽  
Òscar Palacios ◽  
Sílvia Atrian
Keyword(s):  
Metal Complexes ◽  
Metal Binding ◽  
Metal Ion ◽  
Metallothionein Isoforms ◽  
Metal Load

The present work comprises the recombinant synthesis of four metallothioneins (MTs) in metal-unsupplemented cultures and the characterization of the recovered metal complexes by means of analytical and spectrometric techniques. The four MTs are twoDrosophila(MtnA and MtnB), one yeast (Crs5), and one mouse (mMT1) metallothionein isoforms. These four MTs exhibit distinct metal binding preferences, from a clear Cu-thionein character to a definite Zn-thionein nature, respectively. Although in all cases, the only metal ion present in the purified complexes isZn2+, our results highlight an inherently different behaviour of those two types of MTs, in conditions that would mimic their synthesis in physiological environments. Therefore, intrinsically different roles can be hypothesized for the constitutively-produced MT peptides in the absence of any metal overload, depending on their Zn- or Cu-thionein character.

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