“…With their particular electronic, optical and geometric properties, pyrene and its derivatives (Garcia-Cruz et al, 2004;Takahashi et al, 2004;Borisevich et al, 1992) have attracted considerable recent interest. This is demonstrated in a great number of applications including host-guest (Vö gtle, 1996) and metal coordination chemistry (Arrais et al, 2004), as well as fluorescent sensor development (Bren, 2001).…”