1. School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics (COPE) Georgia Institute of Technology Atlanta GA 30332 USA
2. Department of Biology and Chemistry New Mexico Highlands University Las Vegas NM 87701 USA
3. Department of Chemistry and the Macromolecular Science and Engineering Program The University of Michigan Ann Arbor MI 48109 USA
4. Department of Physics and Center for Functional Materials Wake Forest University Winston‐Salem NC 27019 USA
5. Institute of Applied Physics Chisinau MD‐2028 Moldova