TY - DATA T1 - Two-Dimensional Self-Assembly of Linear Molecular Rods at the Liquid/Solid Interface PY - 2011/02/15 AU - Zhongcheng Mu AU - Lijin Shu AU - Harald Fuchs AU - Marcel Mayor AU - Lifeng Chi UR - https://acs.figshare.com/articles/journal_contribution/Two_Dimensional_Self_Assembly_of_Linear_Molecular_Rods_at_the_Liquid_Solid_Interface/2692114 DO - 10.1021/la1040079.s002 L4 - https://ndownloader.figshare.com/files/4368058 KW - lamellar axis KW - dodecyl chains form KW - core rows KW - alkyl chain rows KW - benzene subunits KW - perfluorinated benzene KW - Linear Molecular Rods KW - STM KW - molecule KW - unsubstituted ones change KW - para position KW - lamellar structures KW - arrangement KW - interaction KW - scanning tunneling microscopy KW - phenyl ring KW - terminal dodecyl chains KW - fluoro substituents N2 - We report on the synthesis and scanning tunneling microscopy (STM) studies of a series of linear molecular rods (1−5) 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. ER -