TY - JOUR
T1 - Supramolecular interactions of anthraquinone networks on Au(1 1 1)
T2 - Hydrogen bonds and van der Waals interactions
AU - Kim, Ji Yeon
AU - Jang, Won Jun
AU - Kim, Howon
AU - Yoon, Jong Keon
AU - Park, Jihun
AU - Kahng, Se Jong
AU - Lee, Jhinhwan
AU - Han, Seungwu
N1 - Funding Information:
The authors gratefully acknowledge financial support from the Ministry of Education Science and Technology of the Korean government through National Research Foundation ( 2010-0025301 and 2012-0013222 ). SH were supported by the Center for Multiscale Energy System. This work was supported by the Supercomputing Center/Korea Institute of Science and Technology Information with supercomputing resources including technical support (KSC-2012-C2-35).
PY - 2013
Y1 - 2013
N2 - Intermolecular interactions of supramolecular structures were studied in anthraquinone molecules on Au(1 1 1) using scanning tunneling microscopy. Molecular chains of linear and zigzag structures were observed and explained with simple models of hydrogen bonds. In two-dimensional islands, square and chevron structures were observed, and their molecular models were reproduced by density functional theory calculations. Square structures were made of four hydrogen bonds per molecule, whereas chevron structures were explained with four hydrogen bonds per molecule and additional van der Waals interactions. Our study shows that van der Waals interactions play cooperative roles in determining the hydrogen bonded networks of the system.
AB - Intermolecular interactions of supramolecular structures were studied in anthraquinone molecules on Au(1 1 1) using scanning tunneling microscopy. Molecular chains of linear and zigzag structures were observed and explained with simple models of hydrogen bonds. In two-dimensional islands, square and chevron structures were observed, and their molecular models were reproduced by density functional theory calculations. Square structures were made of four hydrogen bonds per molecule, whereas chevron structures were explained with four hydrogen bonds per molecule and additional van der Waals interactions. Our study shows that van der Waals interactions play cooperative roles in determining the hydrogen bonded networks of the system.
KW - Hydrogen bond
KW - Scanning tunneling microscope
KW - Supramolecular network
KW - Van der Waals interaction
UR - http://www.scopus.com/inward/record.url?scp=84875432413&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2012.12.117
DO - 10.1016/j.apsusc.2012.12.117
M3 - Article
AN - SCOPUS:84875432413
SN - 0169-4332
VL - 268
SP - 432
EP - 435
JO - Applied Surface Science
JF - Applied Surface Science
ER -