Singlet fission as a polarized spin generator for dynamic nuclear polarization

Yusuke Kawashima, Tomoyuki Hamachi, Akio Yamauchi, Koki Nishimura, Yuma Nakashima, Saiya Fujiwara, Nobuo Kimizuka, Tomohiro Ryu, Tetsu Tamura, Masaki Saigo, Ken Onda, Shunsuke Sato, Yasuhiro Kobori, Kenichiro Tateishi, Tomohiro Uesaka, Go Watanabe (), Kiyoshi Miyata () and Nobuhiro Yanai ()
Additional contact information
Yusuke Kawashima: Graduate School of Engineering
Tomoyuki Hamachi: Graduate School of Engineering
Akio Yamauchi: Graduate School of Engineering
Koki Nishimura: Graduate School of Engineering
Yuma Nakashima: Graduate School of Engineering
Saiya Fujiwara: Graduate School of Engineering
Nobuo Kimizuka: Graduate School of Engineering
Tomohiro Ryu: Kyushu University
Tetsu Tamura: Kyushu University
Masaki Saigo: Kyushu University
Ken Onda: Kyushu University
Shunsuke Sato: Kitasato University
Yasuhiro Kobori: Molecular Photoscience Research Center
Kenichiro Tateishi: RIKEN
Tomohiro Uesaka: RIKEN
Go Watanabe: Kitasato University
Kiyoshi Miyata: Kyushu University
Nobuhiro Yanai: Graduate School of Engineering

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Singlet fission (SF), converting a singlet excited state into a spin-correlated triplet-pair state, is an effective way to generate a spin quintet state in organic materials. Although its application to photovoltaics as an exciton multiplier has been extensively studied, the use of its unique spin degree of freedom has been largely unexplored. Here, we demonstrate that the spin polarization of the quintet multiexcitons generated by SF improves the sensitivity of magnetic resonance of water molecules through dynamic nuclear polarization (DNP). We form supramolecular assemblies of a few pentacene chromophores and use SF-born quintet spins to achieve DNP of water-glycerol, the most basic biological matrix, as evidenced by the dependence of nuclear polarization enhancement on magnetic field and microwave power. Our demonstration opens a use of SF as a polarized spin generator in bio-quantum technology.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-36698-4 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36698-4

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-36698-4

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().