86. Encoding Enantiomeric Molecular Chiralities on Graphene Basal Planes
作者:Y. Meng, J. Fan, M. Wang, W. Gong, J. Zhang, J. Ma, H. Mi, Y. Huang, S. Yang, R. S. Ruoff, J. Geng
关键字:Amino Acids, Chiral Recognition, Chirality, Composite, Graphene
论文来源:期刊
具体来源:Angew. Chem. Int. Ed.
发表时间:2022年
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 pi-pi 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.