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Proceedings Paper

Molecules as actuators: toward the engines of molecular machines
Author(s): Michael J. Marsella
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Paper Abstract

Herein we report the design, synthesis, and properties of novel electromechanical actuators based on organic polymers that are capable of redox-induced dimensional change at the molecular level. Specifically, this report will focus on regioisomers of poly(cyclooctatetrathiophene), and evidence of corresponding single molecule actuation. Cyclooctatetrathiophene has been calculated to undergo atom-to-atom dimensional changes of up to 10% upon redox switching. In theory, this distance change occurring within the repeat unit of the polymer can be translated into dimensional changes in both the single polymer chain and bulk material. As such, electromechanical actuation in this system is an intrinsic property of the individual chains, not a bulk property of the material. However, this translation varies as a function of both environment and regioisomer. Our ultimate goal of demonstrating single-molecule electromechanical actuation will be discussed herein.

Paper Details

Date Published: 16 July 2001
PDF: 7 pages
Proc. SPIE 4329, Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices, (16 July 2001); doi: 10.1117/12.432675
Show Author Affiliations
Michael J. Marsella, Univ. of California/Riverside (United States)

Published in SPIE Proceedings Vol. 4329:
Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices
Yoseph Bar-Cohen, Editor(s)

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