Spontaneous formation of metastable orientation with well-organized permanent dipole moment in organic glassy films.
Journal
Nature materials
ISSN: 1476-4660
Titre abrégé: Nat Mater
Pays: England
ID NLM: 101155473
Informations de publication
Date de publication:
Jul 2022
Jul 2022
Historique:
received:
21
10
2021
accepted:
20
04
2022
pubmed:
1
6
2022
medline:
1
6
2022
entrez:
31
5
2022
Statut:
ppublish
Résumé
The performance of organic optoelectronic and energy-harvesting devices is largely determined by the molecular orientation and resultant permanent dipole moment, yet this property is difficult to control during film preparation. Here, we demonstrate the active control of dipole direction-that is, vector direction and magnitude-in organic glassy films by physical vapour deposition. An organic glassy film with metastable permanent dipole moment orientation can be obtained by utilizing the small surface free energy of a trifluoromethyl unit and intramolecular permanent dipole moment induced by functional groups. The proposed molecular design rule could pave a way toward the formation of spontaneously polarized organic glassy films, leading to improvement in the performance of organic molecular devices.
Identifiants
pubmed: 35637340
doi: 10.1038/s41563-022-01265-7
pii: 10.1038/s41563-022-01265-7
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
819-825Subventions
Organisme : MEXT | Japan Society for the Promotion of Science (JSPS)
ID : JP21K19010
Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer Nature Limited.
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