This book from the Materials Research Society emphasizes the broad scientific and technological interest in applications of organic materials to optoelectronics and optics. Materials synthesis, modification, and characterization from the nanoscale to the mesoscale to the macroscale are discussed. Approaches for modeling and theoretical analysis of these materials are highlighted. Also featured in the volume are a keynote talk from Professor Alan Heeger, 2000 Nobel Prize winner in chemistry, as well as five papers from the Microphotonics symposium that address photonic crystals involving organic materials. Additional topics include: metal/organic interfaces - electronic structure and charge injection; photonic/nonlinear optical materials and devices; design and synthesis of electroluminescent materials; applications in displays; electrochromic polymers/sensors; organic transistors; photovoltaics and photodetectors - transport in bulk organic materials and novel patterning schemes.