Whenconsidering the impact of Klaus Muellen's research in pi conjugated materials,one is struck by the logical build up in molecular size from small to largemolecules and, ultimately, polymers�.  Withinthese structures, the donor-acceptor approach is used to set the position ofthe HOMO and LUMO levels to form low-bandgap materials.  We will illustrate how relatively smallmulti-heterocycle and porphyrin based conjugated molecules can provide usefuloptoelectronic properties, such as long wavelength NIR emission in PLEDs.  Extending the conjugation, telechelicoligomers will be discussed that provide cation-radical and dication states andserve as models for electrochromic systems. This leads us to report on the completion of the color palette ofvibrantly colored to transmissive switching electrochromic polymers that spanfrom yellow to orange, red, magenta, blue, cyan, green, and black.  Ordered systems are important as we considerpossibilities for field effect transistors and organic photovoltaics.  Structural and transport studies carried outin conjunction with the Muellen group have allowed us to elucidate conjugatedrepeat unit and side chain effects on packing, order, and charge transport.

Extending pi conjugated
systems for optoelectronic and redox function

241st National Meeting (2011)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Extending pi conjugated systems for optoelectronic and redox function