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Preparation of pH sensors by covalent linkage of dye molecules to the surface of polystyrene optical fibers
Author(s) -
Rao B. S.,
Puschett J. B.,
Matyjaszewski K.
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070430510
Subject(s) - bromothymol blue , polystyrene , covalent bond , fiber , materials science , aqueous solution , optical fiber , polymer chemistry , molecule , chemical engineering , polymer , chemistry , composite material , optics , organic chemistry , physics , engineering
Functional Bromothymol Blue dyes containing amino groups in position 3 have been immobilized on the surface of chlorosulfonated polystyrene fibers and characterized by ESCA. Upon laser irradiation, a modified fiber has been used as an antenna fiber in a twisted pair of plastic optical fibers immersed in aqueous solutions having various pH. The light transmitted to the receiving fiber depends on pH values. This device can be used as a pH sensor.