Triplet energies of pi-conjugated polymers.
Monkman, A P Burrows, H D Hartwell, L J Horsburgh, L E Hamblett, Ian Navaratnam, S
Monkman, A P
Burrows, H D
Hartwell, L J
Horsburgh, L E
Hamblett, Ian
Navaratnam, S
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Abstract
Using pulse radiolysis and triplet energy transfer has enabled us to measure the triplet energies in a broad range of different pi-conjugated polymers. In all cases we find that the 1 (3)B(u) is of order 0.6 to 1 eV below the 1 (1)B(u), indicative of localized triplet states with strong electron-electron correlation. We also observe that the 1 (1)A(g)-1 (3)B(u) gap decreases linearly as the 1 (1)A(g)-1 (1)B(u) gap decreases even though polymers with very different structure have been studied. This surprising result suggests that polymers with singlet gap <1.3 eV will have a triplet ground state.
Description
Date
2001-02-12
Publisher
Collections
Keywords
Radiolysis
Triplet Energy Transfer
Triplet Energy Transfer
Type
Article
Citation
Triplet energies of pi-conjugated polymers. 2001, 86 (7):1358-61 Phys. Rev. Lett.