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Issue 36, 2019
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Dynamic nuclear polarization with photo-excited triplet electrons using 6,13-diphenylpentacene

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Abstract

Dynamic nuclear polarization with photo-excited triplet electrons (Triplet-DNP) is demonstrated using 6,13-diphenylpentacene (DPPentacene). DPPentacene is soluble in various organic solvents, while pentacene, which is used in most of the triplet-DNP experiments, has limited solubility. An enhancement factor of 81 is obtained for 1H spins in the glass of ethanol-d6 : water = 80 : 20 (w/w) doped with 0.1 mM DPPentacene at 90 K in 0.67 T.

Graphical abstract: Dynamic nuclear polarization with photo-excited triplet electrons using 6,13-diphenylpentacene

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Article information


Submitted
17 Jun 2019
Accepted
21 Aug 2019
First published
09 Sep 2019

Phys. Chem. Chem. Phys., 2019,21, 19737-19741
Article type
Communication

Dynamic nuclear polarization with photo-excited triplet electrons using 6,13-diphenylpentacene

K. Tateishi, M. Negoro, H. Nonaka, A. Kagawa, S. Sando, S. Wada, M. Kitagawa and T. Uesaka, Phys. Chem. Chem. Phys., 2019, 21, 19737
DOI: 10.1039/C9CP00977A

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