Journal
SMALL
Volume 18, Issue 28, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202202368
Keywords
density functional theory calculations; halogen bonds; imaging chemical bonds; low-temperature scanning tunneling microscopy; non-contact atomic force microscopy
Categories
Funding
- Ministry of Education -Singapore [MOE2018-T2-1-088]
- National Research Foundation -Singapore [NRF-CRP26-2021RS-0002]
Ask authors/readers for more resources
The study investigates molecular clusters formed on Au(111) with diverse halogen bonds, revealing the presence of three distinct halogen bonds among the clusters. The real-space atomic information of these clusters is acquired using non-contact atomic force microscopy and low-temperature scanning tunneling microscopy.
The chemical bond is of central interest in chemistry, and it is of significance to study the nature of intermolecular bonds in real-space. Herein, non-contact atomic force microscopy (nc-AFM) and low-temperature scanning tunneling microscopy (LT-STM) are employed to acquire real-space atomic information of molecular clusters, i.e., monomer, dimer, trimer, tetramer, formed on Au(111). The formation of the various molecular clusters is due to the diversity of halogen bonds. DFT calculation also suggests the formation of three distinct halogen bonds among the molecular clusters, which originates from the noncovalent interactions of Br-atoms with the positive potential H-atoms, neutral potential Br-atoms, and negative potential N-atoms, respectively. This work demonstrates the real-space investigation of the multiple halogen bonds by nc-AFM/LT-STM, indicating the potential use of this technique to study other intermolecular bonds and to understand complex supramolecular assemblies at the atomic/sub-molecular level.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available