Blue, green, and orange-red emission from Polystyrene microbeads for solid-state white-light and multicolor emission
| Title | Blue, green, and orange-red emission from Polystyrene microbeads for solid-state white-light and multicolor emission |
| Publication Type | Journal Article |
| Year of Publication | 2014 |
| Authors | Sonawane, SL, Asha, SK |
| Journal | Journal of Physical Chemistry B |
| Volume | 118 |
| Issue | 31 |
| Pagination | 9467-9475 |
| Date Published | AUG |
| Type of Article | Article |
| ISSN | 1520-6106 |
| Abstract | Solid-state white-light emission was achieved from polystyrene (PS) microbeads incorporated with fluorophores based on perylene bisimide (PBITEG) and oligo(p-phenylenevinylene) (OPV) as acrylic cross-linkers. The PS beads incorporated with only PBITEG gave intense orange-red emission; PS incorporated with OPV exhibited blue-emission, whereas a series of polymers incorporating both cross-linkers exhibited varying shades of white-light emission. One of the PS samples, PS-PBITEG-6.25-OPV-4.28 (PBITEG incorporation: 6.25 X 10(-7) mole; OPV incorporation: 4.28 x 10(-7) mol), exhibited pure white-light emission in the powder form with CIE coordinates (0.33, 0.32). The rigid aromatic cross-linkers were incorporated into the PS backbone in a two-stage dispersion polymerization to afford PS beads in the size range 2 to 3 mu m. The incorporation of fluorophores as cross-linkers enabled covalent attachment of the dye to the polymer backbone, avoiding dye leakage besides avoiding aggregation-induced fluorescence quenching. |
| DOI | 10.1021/jp504718m |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.187 |
