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Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

Multilayered assemblies composed of brilliant yellow and poly(allylamine) for an optical pH sensor.


PMID 16896253

Abstract

Multilayered thin films containing poly(allylamine) (PAA) and brilliant yellow (BY) were prepared on a quartz slide by a layer-by-layer (LBL) deposition technique. The UV-visible spectra of the PAA/BY films were sufficiently changed depending upon the pH value of the solution in which the film was immersed. The response of the PAA/BY films was very fast (within a second) upon pH change from 9.0 to 5.0, while the response time was ca. 100 s upon pH change from 5.0 to 9.0.

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201375
Brilliant Yellow, Dye content ≥50 %
C26H18N4Na2O8S2