1. Materials Department and Materials Research Laboratory University of California Santa Barbara Santa Barbara California 93106
2. Department of Chemistry and Biochemistry University of California Santa Barbara Santa Barbara California 93106
3. Department of Chemistry University of Warwick CV47 AK Coventry United Kingdom
4. Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213
5. Department of Chemistry Colorado State University Fort Collins Colorado 80523
6. Center for Advanced Macromolecular Design School of Chemical Engineering, The University of New South Wales Sydney New South Wales 2052 Australia
7. Department of Chemistry Cornell University Ithaca New York 14850