| The underlying theme in this dissertation is the study of structure-property relationships of pi-electron systems, and thereby determining the functions that may arise from these properties. We primarily describe our findings on the structure-property relationship of ortho oligo aryls and our proposed application of these helical systems as Single Molecule, or Intrinsic Electromechanical Actuators.; Electromechanical actuation (EMA) is the conversion of electrical to mechanical energy. Conducting polymer EMAs (CP-EMAs) are a well-known class of functional conjugated polymers, that can generate up to 100 times more force than natural muscle for a given cross-section, and up to three times the power to mass ratios.; Ortho oligo thiophenes, in general, have shown a propensity for helicity, coupled with redox induced dimensional changes that mimic the movement of a spring. We show, as proof of concept, their utility as spring-like Intrinsic Electromechemical Actuators, which function at lower voltages, allowing for higher efficiencies, faster response rates, and higher fatigue resistance. |
