Abstract
Linear copolymers that have pendant coumarin-2 and coumarin-343 chromophores were prepared as analogues to previously synthesized light-harvesting dendrimers. The chromophore ratios within these polymers were maintained similar to those of the various generation dendrimers to investigate the effect of polymer architecture on the energy-transfer efficiency between the coumarin-2 donors and coumarin-343 acceptors. Both physical and photophysical properties of these polymers were analyzed and compared to those of the analogous dendrimers. Energy-transfer efficiencies were relatively high in the polymers; however, deleterious excimer formation between the coumarin-343 chromophores diminished the quantum yield of fluorescence of the polymers when compared to the analogous dendrimers. Overall, it was found that the ultimate performance of the dendritic light-harvesting antennae was superior to that of the polymeric analogues, but the polymers were more practical in terms of synthetic accessibility.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1366-1373 |
| Number of pages | 8 |
| Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
| Volume | 39 |
| Issue number | 9 |
| DOIs | |
| State | Published - May 1 2001 |
| Externally published | Yes |
Keywords
- Chromophores
- Energy transfer
- Flourescence
- Light harvesting
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry