Bis(phenanthroline)-ethylenediamine conjugate displays excimer fluorescence upon binding with DNAElectronic supplementary information (ESI) available: synthetic procedures and analytical data, binding isotherms, and fluorescence titration by addition of 1 to calf thymus DNA. See http://www.rsc.org/suppdata/cc/b3/b316126a/

Abstract

1,2-Bis(1,10-phenanthrolin-2-yl)ethylenediamine (1) displays a unique long-life time excimer fluorescence at 528 nm by binding with calf thymus DNA, while its monomer fluorescence at 400 nm shows a decrease upon binding with DNA.