Monkman, A. P. and Burrows, H. D. and Hartwell, L. J. and Horsburgh, L. E. and Hamblett, I. and Navaratnam, S. (2001) 'Triplet energies of pi-conjugated polymers.', Physical review letters., 86 (7). pp. 1358-1361.
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.
|Keywords:||Lowest singlet, States.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||http://dx.doi.org/10.1103/PhysRevLett.86.1358|
|Publisher statement:||© 2001 by The American Physical Society. All rights reserved.|
|Record Created:||27 Nov 2006|
|Last Modified:||13 Sep 2010 14:53|
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