Interactions of polymer-small molecule complex with cupric (II) ions in aqueous ethanol solution

Acar N., Tulun T.

EUROPEAN POLYMER JOURNAL, vol.37, no.8, pp.1599-1605, 2001 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 8
  • Publication Date: 2001
  • Doi Number: 10.1016/s0014-3057(01)00026-x
  • Page Numbers: pp.1599-1605


A complex was prepared by mixing ethanol solutions of poly(4-vinyl pyridine) (P4VP) and 4-amino benzoic acid. The complex (PEC) formation was studied by C-13 NMR, IR spectroscopy, differential scanning calorimetry and potentiometry. It was found that hydrogen bond is formed between P4VP and 4-amino benzoic acid. Dissolution was assessed visually at room temperature using dimethyl formamide, dimethyl sulfoxide, methanol, ethanol, ethanol-water. After dissolution of PEC in aqueous-ethanol (50% v/v) solution, the interaction of PEC with Cu2+ ions has been investigated by potentiometric titration. The average number of ligands coordinated with the central metal ion and the stability constants of PEC-metal complex were determined. (C) 2001 Elsevier Science Ltd. All rights reserved.