UC Riverside

This dissertation delves into the field of photomechanical motion, exploring the manipulation of materials using light. Central to the research is the study of TEMPO, hexaarylbiimidazole (HABI), and pyrolytic graphite (PG), each offering unique insights into energy transfer and material control. The study begins with TEMPO, demonstrating its capabilities in controlled mechanical motion due to its stable free radical properties. This exploration lays the groundwork for further investigations into HABI and PG, where their photoresponsive behavior is examined. An important aspect of this research is the ability of light to alter the magnetic susceptibility of materials, enabling controlled movement in magnetic fields.This dissertation underscores the importance of understanding the thermal and magnetic properties of materials in developing advanced technologies. The implementation of photothermal and photochemical techniques has broad applications, from magnetic levitation to sophisticated manufacturing processes. Future research is suggested to develop new methods leveraging light-matter interactions, with vast potential for advancements in energy systems, manufacturing, and biomedical technologies. In summary, this work contributes significantly to the understanding of photomechanical motion, offering new methodologies with far-reaching implications in various scientific and technological domains.