Triplet excited state properties in variable gap π-conjugated donor–acceptor–donor chromophores† †Electronic supplementary information (ESI) available: Experimental details including synthetic procedures, NMR spectra, additional photophysical data a

Triplet excited state properties in variable gap π-conjugated donor–acceptor–donor chromophores† †Electronic supplementary information (ESI) available: Experimental details including synthetic procedures, NMR spectra, additional photophysical data a