Halogen bonds in 2D supramolecular self-assembly of organic semiconductors

Gutzler, Rico, Fu, Chaoying, Dadvand, Afshin, Hua, Yun, MacLeod, Jennifer M., Rosei, Federico, & Perepichka, Dmitrii F. (2012) Halogen bonds in 2D supramolecular self-assembly of organic semiconductors. Nanoscale, 4(19), pp. 5965-5971.

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Abstract

Weak interactions between bromine, sulphur, and hydrogen are shown to stabilize 2D supramolecular monolayers at the liquid–solid interface. Three different thiophene-based semiconducting organic molecules assemble into close-packed ultrathin ordered layers. A combination of scanning tunneling microscopy (STM) and density functional theory (DFT) elucidates the interactions within the monolayer. Electrostatic interactions are identified as the driving force for intermolecular Br⋯Br and Br⋯H bonding. We find that the S⋯S interactions of the 2D supramolecular layers correlate with the hole mobilities of thin film transistors of the same materials.

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35 citations in Web of Science®

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ID Code: 89956
Item Type: Journal Article
Refereed: Yes
DOI: 10.1039/C2NR31648J
ISSN: 2040-3372
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 The Royal Society of Chemistry
Deposited On: 06 Apr 2016 05:49
Last Modified: 18 Apr 2016 02:30

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