Abstract
Novel fluorescent poly(2-(acetoacetoxy)ethyl methacrylate)(PAAEMA) latexes have been synthesized by miniemulsion polymerization employing a polymeric costabilizer. Nanoscale aggregates of macromolecules bearing β-dicarbonyl are formed in the prepared latex particles. Ammonia and the β-dicarbonyl aggregates assemble a supramolecular complex, which exhibits strong visible fluorescence under UV light. The formation of the complex is confirmed by the characteristic absorption peak located at about 275. nm in UV-Vis spectra. The absorption spectrum has been found to be applicable for ammonia detection. Atomic Force Microscopy (AFM) studies of surface morphology reveal that gas-sensing properties of the PAAEMA thin films involve the reversible absorption and desorption of ammonia. PAAEMA thin films are sensitive to ammonia gas and have a short response time of 80. s when exposed to 54. ppm of ammonia gas concentration. © 2011 Elsevier Inc..
| Original language | English |
|---|---|
| Pages (from-to) | 94-101 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 373 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 May 2012 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Ammonia sensing
- Fluorescent chemosensor
- Polymer thin film
- Supramolecular complex
- β-Dicarbonyl aggregation