1. a Department of Chemistry , University of Central Florida , Orlando, FL, 32816, USA
2. b CREOL, The College of Optics & Photonics, University of Central Florida , Orlando, FL, 32816, USA
3. c Department of Biology & Chemistry , New Mexico Highlands University , Las Vegas, NM, 87701, USA
4. d Department of Physics and Astronomy , University of Pennsylvania , Philadelphia, PA, 19104, USA