TY - JOUR
T1 - Tetragonal porous networks made by rod-like molecules on Au(1 1 1) with halogen bonds
AU - Jang, Won Jun
AU - Chung, Kyung Hoon
AU - Lee, Min Wook
AU - Kim, Howon
AU - Lee, Sungjun
AU - Kahng, Se Jong
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 ). This study was supported by the Supercomputing Center/Korea Institute of Science and Technology Information with supercomputing resources and technical support ( KSC-2013-C1-014 ).
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2014/8/1
Y1 - 2014/8/1
N2 - Supramolecular structures of two rod-like molecules whose both ends are terminated with Br-ligands were studied using scanning tunneling microscopy (STM). Rectangular and square porous networks were observed in 4,4″-dibromo-p-terphenyl (DBTP) and 4,4″-dibromo-p-quaterphenyl (DBQP) molecules on Au(1 1 1) with the void areas of 3.5 and 5.6 nm 2 , respectively. Both networks had chiral quadrupole nodes that could be explained with four Br⋯Br halogen bonds and four Br⋯H hydrogen bonds. The reversible transformations of network structures were observed in consecutive STM images, possibly mediated by a liquid phase surrounding the networks. The molecules also formed close-packing ladder-like networks with triple nodes that could be explained with four Br⋯H bonds. Our study shows that Br-ligands play key roles in forming molecular networks for both rod-like molecules.
AB - Supramolecular structures of two rod-like molecules whose both ends are terminated with Br-ligands were studied using scanning tunneling microscopy (STM). Rectangular and square porous networks were observed in 4,4″-dibromo-p-terphenyl (DBTP) and 4,4″-dibromo-p-quaterphenyl (DBQP) molecules on Au(1 1 1) with the void areas of 3.5 and 5.6 nm 2 , respectively. Both networks had chiral quadrupole nodes that could be explained with four Br⋯Br halogen bonds and four Br⋯H hydrogen bonds. The reversible transformations of network structures were observed in consecutive STM images, possibly mediated by a liquid phase surrounding the networks. The molecules also formed close-packing ladder-like networks with triple nodes that could be explained with four Br⋯H bonds. Our study shows that Br-ligands play key roles in forming molecular networks for both rod-like molecules.
KW - Halogen bond
KW - Intermolecular structure
KW - Scanning tunneling microscopy
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U2 - 10.1016/j.apsusc.2014.04.174
DO - 10.1016/j.apsusc.2014.04.174
M3 - Article
AN - SCOPUS:84901824426
VL - 309
SP - 74
EP - 78
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -