alexa An Overview on Polymer Complexes | Open Access Journals
ISSN: 2157-7544
Journal of Thermodynamics & Catalysis
Like us on:
Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
Meet Inspiring Speakers and Experts at our 3000+ Global Conferenceseries Events with over 600+ Conferences, 1200+ Symposiums and 1200+ Workshops on
Medical, Pharma, Engineering, Science, Technology and Business

An Overview on Polymer Complexes

Ashraf A El-Bindary*
Department of Chemistry, Faculty of Science, University of Damietta, Damietta 34517, Egypt
Corresponding Author : Ashraf A El-Bindary
Department of Chemistry, Faculty of Science
University of Damietta, Damietta 34517, Egypt
Tel: +2 01114266996
E-mail: [email protected]
Received August 20, 2014; Accepted August 21, 2014; Published August 29, 2014
Citation: El-Bindary AA (2014) An Overview on Polymer Complexes J Thermodyn Catal 5:e129. doi:10.4172/2157-7544.1000e129
Copyright: © 2014 El-Bindary AA This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Related article at
DownloadPubmed DownloadScholar Google

Visit for more related articles at Journal of Thermodynamics & Catalysis

Polymer complexes have been attracting interest in many scientific and technological fields in recent years. Polymer complexes have found wide applications in bioinorganic industry, wastewater treatment, pollution control, hydrometallurgy, pre concentration, anionic polyelectrolyte hydrogels, cation-exchange resins, etc. Moreover, they recently showed potential applications in material science as catalytic, conductive, luminescent, magnetic, porous, chiral or non-linear optical materials. Although various extensive investigations on polymer complexes have been reported, most of these complexes are too complicated to be discussed quantitatively due to the non-uniformity of their structure. These compounds include not only “complexes of macromolecules” but also the structurally labile “metal complex”. Before detailed information can be obtained about the properties of polymer complexes, in particular about the reactivity and the catalytic activity, their structure must be elucidated. A polymer complex possessing a uniform structure may be defined as follows:
The structure within the coordination sphere is uniform, i.e. the species and the composition of the ligand and its configuration are identical in any complex unit existing in the polymer complex;
• The primary structure of the polymer ligand is known;
• If the structure within the coordination sphere is identical in a polymer and in a monomeric complex, their reactivity ought to be the same even though the complex is bound to a polymer chain. However, it is clear that the reactivity is sometimes strongly affected by the polymer ligand that exists outside the coordination sphere surrounding the metal complex. The effect of polymer ligands can be explained in terms of two factors;
• The steric effect, which is determined by the conformation and density of the polymer ligand chain;
• The special environment constituted by a polymer ligand domain.
Hence, it is possible to prepare polymer complexes having different use and applications by varying the polymer chain, the nature of the ligand and the metal ion. Our research group interests for the synthesis and characterization of polymer complexes structure by using elemental analyses, electronic spectra, magnetic susceptibilities, FT-IR, IR, 1H-NMR, ESR and TGA analyses. The metal complexes of 8-quinolyl acrylate, acrylamido-4-aminoantipyrinyl, 2-acrylamidophenol, bis(2,6-diaminopyridine sulphoxide), 5-vinyl salicylaldehyde, 2-acrylamidobenzoic acid, 5-vinylsalicylidene anthranilic acid, 5-vinylsalicylidene aniline, 5-vinylsalicylidene-2-aminophenol, 5-vinylsalicylidene semicarbazone, 5-vinylsalicylidene-2-aminomethyl pyridine, cinnamaldehyde-2-anthranilic acid, 5-vinylsalicylidene-2- aminopyridine and etc. in the polymeric form were prepared in DMF and adding 0.1 (w/v%) 2,2`-azobisisobutyronitrile as initiator.
The determination of equilibrium constants is an important process for many branches of chemistry and can be determined from potentiometric and/or spectrophotometric data. Many more programs have been published to use microcomputers for the computations of equilibrium constants from experimental data. Potentiometry generally used for the measurements of formation constants of metal complexes is based on pH-metric titration of the ligand in absence and presence of metal ions. The formation constants derived by least squares analysis of potentiometric data can describe completely the solution equilibria. The measurements are usually carried out in the monomeric and polymeric form at a constant ionic strength higher than the metal ion concentration and in the absence and presence of 2,2`-azobisisobutyronitrile as initiator, respectively. Generally, the stability constants of polymer complexes are higher than monomer complexes. This is quite reasonable because the ligand in polymeric forms are better complexing agent. Also, the measurements are usually carried out at different temperatures to calculate the thermodynamic parameters. In most cases the formation of the metal polymer complexes have been found to be spontaneous, endothermic and entropically favourable.
Select your language of interest to view the total content in your interested language
Post your comment

Share This Article

Relevant Topics

Recommended Conferences

Article Usage

  • Total views: 11648
  • [From(publication date):
    October-2014 - Jun 25, 2017]
  • Breakdown by view type
  • HTML page views : 7849
  • PDF downloads :3799

Post your comment

captcha   Reload  Can't read the image? click here to refresh

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version