- Sithurandi Ubeysinghe: Department of Chemistry, Saint Louis University, Saint Louis, MO 63103, USA.
- Waruna Thotamune: Department of Chemistry, Saint Louis University, Saint Louis, MO 63103, USA.
- Ajith Karunarathne: Department of Chemistry, Saint Louis University, Saint Louis, MO 63103, USA. Electronic address: wkarunarathne@slu.edu.