Electronic coupling in 6,6″-donor-substituted terpyridines: tuning of the mixed valence state by proton and metal ion complexationElectronic supplementary information (ESI) available: Job plots of UV and fluorescence titration of 3 with Zn2+. See http://www.rsc.org/suppdata/cc/b1/b110289c/

Abstract

6,6″-Terpyridyl-bishydroquinone conjugates are synthesised by Pd-catalyzed cross-coupling and their conformational switching, triggered by protons, zinc(II) or cobalt(II), is studied by cyclovoltammetry and in situ UV/Vis/NIR and FT-IR spectroelectrochemistry.