10.1021/la1040079.s001
Zhongcheng Mu
Zhongcheng
Mu
Lijin Shu
Lijin
Shu
Harald Fuchs
Harald
Fuchs
Marcel Mayor
Marcel
Mayor
Lifeng Chi
Lifeng
Chi
Two-Dimensional Self-Assembly of Linear Molecular Rods at the Liquid/Solid Interface
American Chemical Society
2011
lamellar axis
dodecyl chains form
core rows
alkyl chain rows
benzene subunits
perfluorinated benzene
Linear Molecular Rods
STM
molecule
unsubstituted ones change
para position
lamellar structures
arrangement
interaction
scanning tunneling microscopy
phenyl ring
terminal dodecyl chains
fluoro substituents
2011-02-15 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Two_Dimensional_Self_Assembly_of_Linear_Molecular_Rods_at_the_Liquid_Solid_Interface/2692117
We report on the synthesis and scanning tunneling microscopy (STM) studies of a series of linear molecular rods (<b>1</b>−<b>5</b>) comprising different numbers and/or spatial arrangements of perfluorinated benzene and benzene subunits interlinked with diacetylenes in the para position and decorated with or without terminal dodecyl chains. The molecules organize themselves into well-ordered 2D crystal structures at the liquid/solid interface through intermolecular and molecule−substrate interactions. Whereas the molecules substituted by dodecyl chains form the lamellar structures with alternating rigid core rows and alkyl chain rows, the unsubstituted ones change the orientation of the rigid backbones with respect to the lamellar axis. The molecular arrangement is not influenced by fluoro substituents on any phenyl ring of the backbone, which suggests that the interactions between the π-conjugated backbones are dominated by close packing rather than by the dipole moments of the rods or fluorine-based intermolecular interactions.