Polymer co-crystalline films for photonics Christophe Daniel, Alexandra R. Albunia, Concetta D’Aniello, Paola Rizzo, Vincenzo Venditto and Gaetano Guerra J. Eur. Opt. Soc.-Rapid Publ., 4 (2009) 09037 Published online: 27 July 2009 DOI: 10.2971/jeos.2009.09037