Light harvesting and energy transfer within coumarin-labeled polymers

被引：10

作者：

Adronov, Alex ^{[1
]}

Robello, Douglas R. ^{[2
]}

Fréchet, Jean M. J. ^{[1
]}

机构：

[1] Department of Chemistry, 718 Latimer Hall, University of California at Berkeley, Berkeley, CA 94720, United States

[2] Eastman Kodak Company, Building 82, Rochester, NY 14650, United States

来源：

| 2001年 / John Wiley and Sons Inc.卷 / 39期

关键词：

Chromophores - Copolymers - Dendrimers - Energy transfer - Fluorescence;

D O I：

10.1002/pola.1113

中图分类号：

学科分类号：

摘要：

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.

引用