From an initial observation that went against �the norm� of expectation, and a comment giving direction to our research program, the Reynolds group began the investigation of the electrochromic (EC) effect of color modulation in pi-conjugated polymers as a function of redox state.  Early experiments, utilizing electrochemical polymerization often lead to films with multi-colored states. The structure:property relationships developed have yielded a set of solution processable (spray coated, slot-die coated, and ink jet printed) EC polymers with a complete color palette that spans the visible spectrum with neutral state colors that range from yellow, orange, red, magenta, purple, blue, cyan green, to black that can be switched to a highly transmissive form.  Access to these EC polymers has allowed the development of EC devices (absorptive/transmissive and absorptive/reflective types) as characterization platforms which demonstrate how these materials behave in regards to color, spectra, switching speed, lifetime, durability, and bistability.  Of special note are the contributions of the many students, postdocs, visiting scientists, and outside collaborators who have participated in the program.

Award Address  (ACS Award in Applied Polymer Science sponsored by Eastman Chemical Company). Path to vibrantly colored, processable electrochromic polymers

244th National Meeting (2012)

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