1. Institute
for Organic Chemistry, Johannes Gutenberg University, Duesbergweg
10-14, 55128, Mainz, Germany
2. Department of Chemistry, Seoul National University, Gwanak-ro
1, Gwanak-gu, Seoul 151-747, Republic of Korea
3. Max Planck Institute for Polymer Research, Ackermannweg, 55128 Mainz, Germany
4. Physical Sciences
and Engineering Division (PSE), Material Science and Engineering (MSE),
Solar and Photovoltaics Engineering Research Center (SPERC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia