Abstract
The multilayered thin films composed diazoresin (DR) and brilliant yellow (BY) were fabricated by a layer-by-layer (LbL) deposition technique, and the ionic bonds between diazonium ion in DR and sulfonate residues in BY were converted to covalent bonds by UV light irradiation. The cross-linking between BY and DR prevented BY from desorption even in a pH 13 solution. The cross-linked (DR/BY)10DR film exhibited pH-dependent absorption spectra in pH 9-13, and the response was repeatable and quick. The pH response time of the films was within a few seconds upon change from pH 9.0 to 13.0, and ca. 40 s upon change from pH 13.0 to 9.0.
Original language | English |
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Pages (from-to) | 1455-1458 |
Number of pages | 4 |
Journal | Polymer |
Volume | 48 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2007 Mar 8 |
Keywords
- Diazoresin
- Layer-by-layer
- pH sensor
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry