Highly Efficient and Tunable Filtering of Electrons' Spin by Supramolecular Chirality of Nanofiber-Based Materials.
CISS effect
nanofibers
spin filtering
supramolecular chirality
Journal
Advanced materials (Deerfield Beach, Fla.)
ISSN: 1521-4095
Titre abrégé: Adv Mater
Pays: Germany
ID NLM: 9885358
Informations de publication
Date de publication:
Feb 2020
Feb 2020
Historique:
received:
01
08
2019
revised:
13
11
2019
pubmed:
11
1
2020
medline:
11
1
2020
entrez:
11
1
2020
Statut:
ppublish
Résumé
Organic semiconductors and organic-inorganic hybrids are promising materials for spintronic-based memory devices. Recently, an alternative route to organic spintronic based on chiral-induced spin selectivity (CISS) is suggested. In the CISS effect, the chirality of the molecular system itself acts as a spin filter, thus avoiding the use of magnets for spin injection. Here, spin filtering in excess of 85% in helical π-conjugated materials based on supramolecular nanofibers at room temperature is reported. The high spin-filtering efficiency can even be observed in nanofibers assembled from mixtures of chiral and achiral molecules through chiral amplification effect. Furthermore and most excitingly, it is shown that both "up" and "down" orientations of filtered spins can be obtained in a single enantiopure system via the temperature-dependent helicity (P and M) inversion of supramolecular nanofibers. The findings showcase that materials based on helical noncovalently assembled systems are modular platforms with an emerging structure-property relationship for spintronic applications.
Identifiants
pubmed: 31922628
doi: 10.1002/adma.201904965
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e1904965Subventions
Organisme : NWO
ID : 10018944
Organisme : Dutch Ministry of Education, Culture, and Science
ID : 024.001.035
Organisme : Marie Skłodowska-Curie postdoctoral fellowship
ID : 704830
Organisme : VW Foundation
Organisme : Israel Science Foundation
Organisme : Israel Ministry of Science
Informations de copyright
© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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