1. Teaching Engagement Program (Office of the Provost) and Department of Chemistry and Biochemistry, University of Oregon, 1585 E 13th Avenue, Eugene, Oregon 97403, United States
2. Department of Chemistry, University of Iowa, 305 Chemistry Building, Iowa City, Iowa 52242, United States
3. Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States