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Extreme electron polaron spatial delocalization in π-conjugated materials.

Publication ,  Journal Article
Rawson, J; Angiolillo, PJ; Therien, MJ
Published in: Proceedings of the National Academy of Sciences of the United States of America
November 2015

The electron polaron, a spin-1/2 excitation, is the fundamental negative charge carrier in π-conjugated organic materials. Large polaron spatial dimensions result from weak electron-lattice coupling and thus identify materials with unusually low barriers for the charge transfer reactions that are central to electronic device applications. Here we demonstrate electron polarons in π-conjugated multiporphyrin arrays that feature vast areal delocalization. This finding is evidenced by concurrent optical and electron spin resonance measurements, coupled with electronic structure calculations that suggest atypically small reorganization energies for one-electron reduction of these materials. Because the electron polaron dimension can be linked to key performance metrics in organic photovoltaics, light-emitting diodes, and a host of other devices, these findings identify conjugated materials with exceptional optical, electronic, and spintronic properties.

Duke Scholars

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

November 2015

Volume

112

Issue

45

Start / End Page

13779 / 13783
 

Citation

APA
Chicago
ICMJE
MLA
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Rawson, J., Angiolillo, P. J., & Therien, M. J. (2015). Extreme electron polaron spatial delocalization in π-conjugated materials. Proceedings of the National Academy of Sciences of the United States of America, 112(45), 13779–13783. https://doi.org/10.1073/pnas.1512318112
Rawson, Jeff, Paul J. Angiolillo, and Michael J. Therien. “Extreme electron polaron spatial delocalization in π-conjugated materials.Proceedings of the National Academy of Sciences of the United States of America 112, no. 45 (November 2015): 13779–83. https://doi.org/10.1073/pnas.1512318112.
Rawson J, Angiolillo PJ, Therien MJ. Extreme electron polaron spatial delocalization in π-conjugated materials. Proceedings of the National Academy of Sciences of the United States of America. 2015 Nov;112(45):13779–83.
Rawson, Jeff, et al. “Extreme electron polaron spatial delocalization in π-conjugated materials.Proceedings of the National Academy of Sciences of the United States of America, vol. 112, no. 45, Nov. 2015, pp. 13779–83. Epmc, doi:10.1073/pnas.1512318112.
Rawson J, Angiolillo PJ, Therien MJ. Extreme electron polaron spatial delocalization in π-conjugated materials. Proceedings of the National Academy of Sciences of the United States of America. 2015 Nov;112(45):13779–13783.
Journal cover image

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

November 2015

Volume

112

Issue

45

Start / End Page

13779 / 13783