Alex is currently a Professor of Chemistry at Rider University and Chair of the Department of Chemistry and Biochemistry. Since his days as an undergraduate, he has been fascinated by intermolecular forces and has published papers on molecules held together by hydrogen bonding, van der Waals forces, dative bonding and ion-molecule interactions. He has worked as a Program Director for the National Science Foundation and has worked in chemistry examination development for both ETS and the ACS Examinations Institute.  He has been heavily involved in innovating the teaching of physical chemistry, starting in graduate school. He was a member of the Physical Chemistry Online Consortium (PCOL) and an early adopter of POGIL.  A former member of The POGIL Project Steering Committee, he has also been involved in the POGIL-PCL project and is the co-author, along with Tricia Shepherd, of Quantum Chemistry & Spectroscopy: A Guided Inquiry.