Abstract
We synthesized a boronic acid-appended azobenzene dye (BA) and attached it to poly(ethyleneimine) (polyBA) for studying its sugar response. The addition of d-glucose induced a significant change in the UV-visible absorption spectra of the polyBA solution. The binding constants for d-glucose (Kglu) and d-fructose (Kfru) were calculated to be 54 M- 1 and 110 M- 1, respectively. The selectivity for d-glucose was higher in polyBA as compared with that of monomeric BA (Kglu = 1.2 M- 1, Kfru = 17 M- 1). We also fabricated multilayered films composed of polyBA and polyanions {poly(vinyl sulfate) (PVS), carboxymethylcellulose (CMC)} using a layer-by-layer deposition technique. In (PVS/polyBA)10 films, the affinity for d-glucose was relatively low (Kglu = 1.7 M- 1, Kfru = 28 M- 1). In contrast, (CMC/polyBA)5 films showed a high affinity for d-glucose (Kglu = 18 M- 1, Kfru = 42 M- 1). The loosely packed structure of the (CMC/polyBA)5 film and the suitable chemical structures of CMC probably led to a high affinity for d-glucose.
Original language | English |
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Pages (from-to) | 115-118 |
Number of pages | 4 |
Journal | Materials Science and Engineering C |
Volume | 29 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2009 Jan 1 |
Keywords
- Boronic acid
- Colorimetric sensor
- Glucose
- Layer-by-layer
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering