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On-surface assembly of hydrogen- and halogen-bonded supramolecular graphyne-like networks

Demonstrated here is a supramolecular approach to fabricate highly ordered monolayered hydrogen- and halogen-bonded graphyne-like two-dimensional (2D) materials from triethynyltriazine derivatives on Au(111) and Ag(111). The 2D networks are stabilized by N⋅⋅⋅H−C(sp) bonds and N⋅⋅⋅Br−C(sp) bonds to t...

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Autori principali: Yang, Zechao (Autore) , Fromm, Lukas (Autore) , Sander, Tim (Autore) , Gebhardt, Julian (Autore) , Schaub, Tobias A. (Autore) , Görling, Andreas (Autore) , Kivala, Milan (Autore) , Maier, Sabine (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 2020
In: Angewandte Chemie. International edition
Year: 2020, Volume: 59, Fascicolo: 24, Pages: 9549-9555
ISSN:1521-3773
DOI:10.1002/anie.201916708
Accesso online:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/anie.201916708
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201916708
Testo
Note sull'autore:Zechao Yang, Lukas Fromm, Tim Sander, Julian Gebhardt, Tobias A. Schaub, Andreas Görling, Milan Kivala, and Sabine Maier
Descrizione
Riassunto:Demonstrated here is a supramolecular approach to fabricate highly ordered monolayered hydrogen- and halogen-bonded graphyne-like two-dimensional (2D) materials from triethynyltriazine derivatives on Au(111) and Ag(111). The 2D networks are stabilized by N⋅⋅⋅H−C(sp) bonds and N⋅⋅⋅Br−C(sp) bonds to the triazine core. The structural properties and the binding energies of the supramolecular graphynes have been investigated by scanning tunneling microscopy in combination with density-functional theory calculations. It is revealed that the N⋅⋅⋅Br−C(sp) bonds lead to significantly stronger bonded networks compared to the hydrogen-bonded networks. A systematic analysis of the binding energies of triethynyltriazine and triethynylbenzene derivatives further demonstrates that the X3-synthon, which is commonly observed for bromobenzene derivatives, is weaker than the X6-synthon for our bromotriethynyl derivatives.
Descrizione del documento:First published: 03 March 2020
Gesehen am 26.09.2022
Descrizione fisica:Online Resource
ISSN:1521-3773
DOI:10.1002/anie.201916708

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