Triplet energies of pi-conjugated polymers

Monkman, A.P.; Burrows, H.D.; Hartwell, L.J.; Horsburgh, L.E.; Hamblett, I.; Navaratnam, S.

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 eases we find that the 1(3)B(u) is Of order 0.6 to 1 eV below the 1 B-1(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 I(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.

Citation

Monkman, A., Burrows, H., Hartwell, L., Horsburgh, L., Hamblett, I., & Navaratnam, S. (2001). Triplet energies of pi-conjugated polymers. Physical Review Letters, 86(7), 1358-1361. https://doi.org/10.1103/physrevlett.86.1358

• Journal Article Type: Article
• Online Publication Date: Feb 12, 2001
• Publication Date: Feb 12, 2001
• Deposit Date: Sep 10, 2007
• Publicly Available Date: Aug 2, 2010
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 86
• Issue: 7
• Pages: 1358-1361
• DOI: https://doi.org/10.1103/physrevlett.86.1358
• Keywords: Lowest singlet, States.
• Public URL: https://durham-repository.worktribe.com/output/1535946