Generation by Electron Transfer of an Emitting State Not Observed by Photoexcitation in a Linked Ru ( bpy ) 32 +-Methyl

Content Provider	Semantic Scholar
Author	Xu, Xiaohong Shreder, Kevin Iverson, Brent L. Bard, Allen J.
Copyright Year	1997
Abstract	The molecule in which a methyl viologen (MV 2+) moiety is coupled through a three-carbon chain to one bipyridine in Ru(bpy) 3 (bpy) 2,2′bipyrine), [Ru(bpy) 2(4-(2-(1′-methyl-4-4′-bipyridinediium-1-yl)propyl)-4′-methyl2,2′-bipyridine), abbreviated Ru (bpy)2(MV-bpy)], does not emit upon photoexcitation because of rapid quenching of the MLCT state by the MV2+. The integrated steady-state photoemission intensity is <1/1000 that of Ru(bpy) 3 under the same conditions. However, quite efficient emission [ ∼1/5 that of Ru(bpy) 3] is found when RuIII (bpy)2(MV2+-bpy)5+ is electrogenerated at a Pt electrode in aqueous solution and reacts with a suitable coreactant (trinpropylamine or oxalate), where the excited state is produced by an electron-transfer reaction. Electrogenerated chemiluminescence is also observed for this species in acetonitrile solutions upon potential cycling via annihilation of the reduced ( +1) and oxidized ( +5) species.
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Alternate Webpage(s)	http://bard.cm.utexas.edu/resources/Bard-Reprint/602.pdf
Language	English
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Subject Keyword	9,10-diphenylanthracene CCL21 wt Allele Chemiluminescence Electron Excited state HPS6 gene Like button MV2 protocol Oxalates Paraquat Photoelectric effect Photoluminescence Photons Singlet state Solutions Steady state Triplet state acetonitrile bipyridine marine bacterium BPY-W4 rubrene
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Resource Type	Article