Abstract
We report the preparation and electrical characterization of conjugated oligophenylenetriazole (OPT) wires having systematically varied lengths up to 10 nm. OPT wires were built from gold substrates using Cu(I)-catalyzed azide alkyne cycloaddition and characterized comprehensively by RAIRS, ellipsometry, and XPS. We observed a clear transition in direct current (DC) transport from tunneling to hopping in a length range between 4 and 5 nm as previously established for oligoarylimine wires. Stepwise click cycloaddition represents a new efficient method to prepare long conjugated molecular wire self-assembled monolayers (SAMs) on Au surfaces for conduction measurements and is expected to be compatible with a variety of functionalities and bonding architectures in the wire backbones.
Original language | English (US) |
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Pages (from-to) | 8854-8855 |
Number of pages | 2 |
Journal | Journal of the American Chemical Society |
Volume | 132 |
Issue number | 26 |
DOIs | |
State | Published - Jul 7 2010 |