Date of Award

1-1-1987

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Chemistry

Abstract

A study of the binding of copper(II)-amine complexes to polyacrylic acid was undertaken. Experimental binding curves were generated for polyacrylic acid having molecular weights of 11,050 and 1600 at an ionic strength of.5M and also at an ionic strength of.1M for the 11,050 molecular weight sample. An analysis of the experimental data indicates that the coordinating species is copper(II)-triamine. The formation curves were fit to analytical binding models and it was found that the higher molecular weight polyions exhibit cooperative behavior. The copper(II)-triamine PAA M$\sb{\rm n}$ 11,050 system at an ionic strength of.5M has seven coordinated ligands with an intrinsic stability constant of 1.86 $\times$ 10$\sp4$M$\sp{-1}$. For the PAA M$\sb{\rm n}$ 11,050 M$\sp{-1}$ system at an ionic strength of.1M there are thirty five bound ligands with an intrinsic stability constant of 1.76 $\times$ 10$\sp4$M$\sp{-1}$. Only one ligand coordinates to the lower molecular weight polyion and has a stability constant of 2.24 $\times$ 10$\sp4$M$\sp{-1}$.

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