Fluorescent polymers for oxygen sensing

摘要

A fluorescence based oxygen sensor can be prepared comprising a polyaniline polymer doped with one or more pyrene carboxylic acids. The polyaniline has the formula:;
and the pyrene carboxylic acids have the formula:
Pyrene-R—COOH  (II);
wherein R is an aliphatic linking group having 1 to 11 carbon atoms, n represents half the degree of polymerization, x is about 0.5, and (1−x) is about 0.5. The sensor can be coated onto a support. Upon excitation with an appropriate wavelength, the polyaniline/pyrene coating fluoresces. Upon exposure to oxygen the fluorescence rapidly decays.

主权项

1. A composition comprising:
a polyaniline in the form of emeraldine base (I) doped with one or more pyrene carboxylic acid compounds (II) represented by Pyrene-R—COOH; wherein R is an aliphatic linking group having 1 to 11 carbon atoms, n represents half the degree of polymerization, x is about 0.5, and (1−x) is about 0.5.