Controlled growth of aligned alpha-helical-polypeptide brushes for tunable electrical conductivity

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Date

2011-03-28

Authors

J.-C. Wu
Chia-Chun Chen
K.-H. Chen
Y.-C. Chang

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American Institute of Physics

Abstract

Polypeptide based molecular diode with high rectification ratio (∼122 at ±0.422 V) is formed by controlling molecular order and orientation. A film of tethered poly(γ-benzyl-L-glutamate) (PBLG) with high degree of molecular orientation was formed by solvent pair (good/bad) treatment. I-V characterization of the well aligned polypeptides showed that the rectification ratio of PBLG was sufficiently large for potential diode and transistor applications.

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