The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Unmasking Electronic Energy Transfer of Conjugated Polymers by Suppression of O 2 Quenching
Abstract
The photochemistry of poly[2-methoxy, 5-(2′-ethyl-hexyloxy)- p -phenylene-vinylene] (MEH-PPV) has been found to be highly dependent on the presence of O 2 , which increases singlet exciton quenching dramatically. Spectroscopy on isolated single molecules of MEH-PPV in polycarbonate films that exclude O 2 reveals two distinct polymer conformations with fluorescence maxima near 555 and 580 nanometers wavelength, respectively. Time-resolved single-molecule data demonstrate that the 580-nanometer conformation exhibits a “landscape” for intramolecular electronic energy relaxation with a “funnel” that contains a 580-nanometer singlet exciton trap at the bottom. The exciton traps can be converted to exciton quenchers by reaction with O 2 . Conformationally induced, directed-energy transfer is arguably a critical dynamical process that is responsible for many of the distinctive photophysical properties of conjugated polymers.
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Cites
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Fluorescence Spectroscopy of Single Biomolecules
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Cited by
Schwartz, B. J. (2003) · Annual Review of Physical Chemistry · doi:10.1146/annurev.physchem.54.011002.103811 · Cited by 960
Interchain vs. intrachain energy transfer in acceptor-capped conjugated polymers
Beljonne, D., Pourtois, G., Silva, C., Hennebicq, E., Herz, L. M., Friend, R. H., Scholes, G. D., Setayesh, S., Müllen, K., & Brédas, J. L. (2002) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.172390999 · Cited by 377
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Single-Molecule Spectroscopy of Conjugated Polymers
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Self-citationExciton Migration in Rigid-Rod Conjugated Polymers: An Improved Förster Model
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Metadata
- Authors
- Yu, J., Hu, D., & Barbara, P. F.
- Venue
- Science
- Published
- 2000-08-25
- Volume
- 289
- Issue
- 5483
- Pages
- 1327-1330
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2052370877
- Cited by
- 364
- References
- 27
- FWCI
- 21.65
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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