1. Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
2. Theory of Polymers and Soft Matter Group, Department of Applied Physics, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
3. Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE, Utrecht, The Netherlands
4. Department of Chemistry, Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
5. The Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States