Fluorescence Properties of Dansyl Groups Covalently Bonded to the Surface of Oxidatively Functionalized Low-Density Polyethylene Film.
HARVARD UNIV CAMBRIDGE MASS DEPT OF CHEMISTRY
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Brief oxidation of low-density polyethylene film with chromic acid in aqueous sulfuric acid introduced carboxylic acid and ketone andor aldehyde groups onto the surface of the film. The carboxylic acid moieties can be used to attach more complex functionality to the polymer surface. We are developing this surface-functionalized polyethylene named polyethylene carboxylic acid, PE-CO2H, to emphasize the functional group that dominates its surface properties as a substrate with which to study problems in organic surface chemistry--especially wetting, polymer surface reconstruction, and adhesion--using physical-organic techniques. This document describes the preparation, characterization, and fluorescence properties of derivatives of PE-CO2H in which the Dansyl 5-dimethylaminonaphthalene-1-sulfonyl group has been covalently attached by amide links to the surface carbonyl moieties. Keywords Acidity and Solvent effects.
- Physical Chemistry
- Polymer Chemistry