1. Vietnam National University-Ho Chi Minh (VNU-HCM), Ho Chi Minh City 721337, Vietnam
2. Department
of Chemistry, Ho Chi Minh City Pedagogical University, Ho Chi Minh City 721337, Vietnam
3. Faculty of
Chemistry, University of Science, Vietnam National University-Ho Chi Minh (VNU-HCM), Ho Chi Minh City 721337, Vietnam
4. Department
of Chemistry and Berkeley Global Science
Institute, University of California-Berkeley, Berkeley, California 94720, United States
5. Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
6. Center
for Research Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 34464, Saudi Arabia