Abstract
A novel fluorescent conjugated polyelectrolyte with pendant glucosamine hydrochloride clusters was prepared through Cu(I)-catalyzed azide/alkyne "click" ligation and Suzuki coupling polymerization. Compared with monosugar-functionalized conjugated polymer, the water-solubility and fluorescence quantum yield of the glycocluster-containing polymer (P-3) were significantly improved. As a glucosamine-containing cationic fluorescent polyelectrolyte, the water-soluble fluorescent polymer can interact with heparin through electrostatic bindings, which induce great fluorescence quenching of P-3 due to the polymer aggregation. Furthermore, upon treatment of the P-3-heparin ensemble with protamine, the fluorescence emission of P-3 recovered since the protamine possesses a competitively strong binding affinity to the heparin and thus results in the release of the fluorescent glycopolymer P-3 from the P-3-heparin ensemble.
| Original language | English |
|---|---|
| Pages (from-to) | 383-390 |
| Number of pages | 8 |
| Journal | Polymer |
| Volume | 52 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 21 Jan 2011 |
| Externally published | Yes |
Keywords
- Conjugated polymers
- Fluorescence
- Glucosamine hydrochloride