1. School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics (COPE), Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
2. Department of Physics and Center for Functional Materials, Wake Forest University, Winston-Salem, North Carolina 27109, United States
3. Department of Chemistry, New Mexico Highlands University, Las Vegas, New Mexico 87701, United States
4. Crystallography Lab, Emory University, 201 Dowman Drive, Atlanta, Georgia 30322, United States