Abstract
Three-component multilayer films were prepared by consecutively depositing a polycation blend of poly(4-vinylpyridiniomethanecarboxylate) (PVPMC) and poly(diallyldimethylammonium) (PDDA) with poly(acrylic acid) (PAA). The self-assembly and disintegration behavior of the multilayer films were investigated in details by UV-vis absorption spectroscopy, quartz crystal microbalance (QCM) and atomic force microscopy (AFM). It was found that nanoporous PDDA/PAA multilayer films can be obtained conveniently by partly disintegrating (PVPMC + PDDA)/PAA multilayer films in a 0.15 M NaCl solution. A novel fast response fiber-optic pH sensor was successfully prepared by constructing nanoporous self-assembly multilayer films on the thin-core fiber interferometer (TCFMI) surface. The response time of a fiber-optic pH sensor deposited with nanoporous PDDA/PAA multilayer film (20 s rise time (tr) and 15 s fall time (tf)) was only one-tenth of that with the nonporous PDDA/PAA multilayer film (240 s and 160 s for trand tf).
| Original language | English |
|---|---|
| Pages (from-to) | 7754-7760 |
| Number of pages | 7 |
| Journal | Journal of Materials Chemistry |
| Volume | 20 |
| Issue number | 36 |
| DOIs | |
| Publication status | Published - 28 Sept 2010 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- Materials Chemistry