1. Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry University of California Santa Barbara Santa Barbara CA 93106 USA
2. Department of Chemistry Université Laval Quebec City G1V 0A6 Canada
3. Department of Physics and Organic and Carbon Electronics Laboratories (ORaCEL) North Carolina State University Raleigh NC 27695 USA
4. University of Lille CNRS, Centrale Lille Institut, Univ. Artois, UMR 8181, Unité de Catalyse et Chimie du Solide Lille F-59000 France