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 |
|---|---|
| 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
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Egawa, Y., Hayashida, R., & Anzai, J. I. (2007). Covalently cross-linked multilayer thin films composed of diazoresin and brilliant yellow for an optical pH sensor. Polymer, 48(6), 1455-1458. https://doi.org/10.1016/j.polymer.2007.01.065