Tuning Hyperfine Fields in Conjugated Polymers for Coherent Organic Spintronics

Lee, Sang-Yun, Paik, Seo-Young, McCamey, Dane R., Yu, Justin, Burn, Paul L., Lupton, John M. and Boehme, Cristophe (2011) Tuning Hyperfine Fields in Conjugated Polymers for Coherent Organic Spintronics. Journal of The American Chemical Society, 133 7: 2019-2021. doi:10.1021/ja108352d


Author Lee, Sang-Yun
Paik, Seo-Young
McCamey, Dane R.
Yu, Justin
Burn, Paul L.
Lupton, John M.
Boehme, Cristophe
Title Tuning Hyperfine Fields in Conjugated Polymers for Coherent Organic Spintronics
Journal name Journal of The American Chemical Society   Check publisher's open access policy
ISSN 0002-7863
1520-5126
Publication date 2011-02-01
Year available 2011
Sub-type Article (original research)
DOI 10.1021/ja108352d
Open Access Status Not yet assessed
Volume 133
Issue 7
Start page 2019
End page 2021
Total pages 4
Place of publication Washington DC, United States
Publisher American Chemical Society
Language eng
Abstract An appealing avenue for organic spintronics lies in direct coherent control of the spin population by means of pulsed electron spin resonance techniques. Whereas previous work has focused on the electrical detection of coherent spin dynamics, we demonstrate here the equivalence of an all-optical approach, allowing us to explore the influence of materials chemistry on the spin dynamics. We show that deuteration of the conjugated polymer side groups weakens the local hyperfine fields experienced by electron-hole pairs, thereby lowering the threshold for the resonant radiation intensity at which coherent coupling and spin beating occur. The technique is exquisitively sensitive to previously obscured material properties and offers a route to quantifying and tuning hyperfine fields in organic semiconductors.
Keyword Detected magnetic-resonance
Polaron pairs
Spin
Magnetoresistance
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DESC0000909
PRF 48916-DNI10
0953225
FF0668728
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Chemistry and Molecular Biosciences
 
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Created: Sun, 20 Mar 2011, 10:07:46 EST