[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
[2] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
[3] Intel Corp, Univ Res Off, Santa Clara, CA 95054 USA
[4] King Abdul Aziz City Sci & Technol KACST, Joint Ctr Excellence Integrated Nanosyst JCIN, Riyadh 11442, Saudi Arabia