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Nirod Kumar Sarangi and Prof. Archita Patnaik L-Tryptophan-Induced Electron Transport across Supported Lipid Bilayers: an Alkyl-Chain Tilt-Angle, and Bilayer-Symmetry Dependence ChemPhysChem 13

Version of Record online: 22 OCT 2012 | DOI: 10.1002/cphc.201200655

Thumbnail image of graphical abstract

Turn up the transport: Molecular orientation-dependent electron transport across symmetric and asymmetric supported lipid bilayers (SLBs) in the presence of transport-active L-tryptophan is reported (see picture). In spite of tryptophan expediting electron-transfer rates across the SLBs, kinetic limitations effectuate electron tunnelling with a potential-independent tunnelling coefficient β=0.15 Å−1. A novel two-dimensional phase-dependent transport with an insulator–semiconductor transition is highlighted.

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