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Encoding Enantiomeric Molecular Chiralities on Graphene Basal Planes

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Title
Encoding Enantiomeric Molecular Chiralities on Graphene Basal Planes
Author(s)
Meng, Y.; Fan, J.; Meihui Wang; Gong, W.; Zhang, J.; Ma, J.; Mi, H.; Huang, Y.; Yang, S.; Rodney S. Ruoff; Geng, J.
Publication Date
2022-04
Journal
Angewandte Chemie - International Edition, v.61, no.15
Publisher
John Wiley and Sons Inc
Abstract
Graphene has demonstrated broad applications due to its prominent properties. Its molecular structure makes graphene achiral. Here, we propose a direct way to prepare chiral graphene by transferring chiral structural conformation from chiral conjugated amino acids onto graphene basal plane through π–π interaction followed by thermal fusion. Using atomic resolution transmission electron microscopy, we estimated an areal coverage of the molecular imprints (chiral regions) up to 64 % on the basal plane of graphene (grown by chemical vapor deposition). The high concentration of molecular imprints in their single layer points to a close packing of the deposited amino acid molecules prior to “thermal fusion”. Such “molecular chirality-encoded graphene” was tested as an electrode in electrochemical enantioselective recognition. The chirality-encoded graphene might find use for other chirality-related studies and the encoding procedure might be extended to other two-dimensional materials. © 2022 Wiley-VCH GmbH.
URI
https://pr.ibs.re.kr/handle/8788114/11970
DOI
10.1002/anie.202117815
ISSN
1433-7851
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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