1. 1DEPARTMENT OF CHEMISTRY, CLEMSON UNIVERSITY, CLEMSON, SOUTH CAROLINA 29634, USA
2. 2MICHELIN AMERICAS R&D CORPORATION, GREENVILLE, SOUTH CAROLINA 29602, USA
3. 3SCHOOL OF POLYMER, TEXTILE AND FIBER ENGINEERING, GEORGIA INSTITUTE OF TECHNOLOGY, ATLANTA, GEORGIA 30332, USA
4. 4DEPARTMENT OF CHEMISTRY, DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING, AND THE ALAN G. MACDIARMID NANOTECH INSTITUTE, THE UNIVERSITY OF TEXAS AT DALLAS, RICHARDSON, TEXAS 75080, USA