Two-Dimensional Self-Assembly of Linear Molecular Rods at the Liquid/Solid Interface?

Mu, Zhongcheng and Shu, Lijin and Fuchs, Harald and Mayor, Marcel and Chi, Lifeng. (2011) Two-Dimensional Self-Assembly of Linear Molecular Rods at the Liquid/Solid Interface? Langmuir, 27 (4). pp. 1359-1363.

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Official URL: http://edoc.unibas.ch/dok/A5843751

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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.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:05 Apr 2017 12:59
Deposited On:14 Sep 2012 07:01

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