1. Department of Chemistry, Durham University, South Road, Durham
DH1 3LE, U.K.
2. Dipartimento di
Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, “Amedeo Avogadro”
Viale Teresa Michel 11, 15121 Alessandria, Italy
3. Department of Chemistry, Hong Kong Baptist University, Kowloon
Tong, Hong Kong