1. Center for Nanoparticle Research; Institute for Basic Science (IBS); Seoul 08826 Republic of Korea
2. School of Chemical and Biological Engineering; Seoul National University; Seoul 08826 Republic of Korea
3. School of Advanced Materials Engineering; Kookmin University; Seoul 02707 Republic of Korea
4. Department of Chemical Engineering; Hoseo University; Asan 31499 Republic of Korea
5. Department of Chemical Engineering; Kangwon National University; Samcheok 25913 Republic of Korea
6. Laboratory for Molecular Engineering of Optoelectronic Nanomaterials; École Polytechnique Fédérale de Lausanne (EPFL); Station 6 Lausanne 1015 Switzerland
7. Department of Materials Science and Engineering; Northwestern University; Evanston IL 60208 USA
8. Cellmotive Co. Ltd.; Kookmin University; Seoul 02707 Republic of Korea