1983
DOI: 10.1016/0009-2614(83)87220-0
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The 9-anthracenecarboxylate anion as sensitizer for the photoreduction of water

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Cited by 41 publications
(17 citation statements)
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“…The relatively fast back electron transfer from the reduced cyclophane component to the oxidized photosensitizer is prevented by the reductant which, if present in a sufficient amount (> 10 À2 m), intercepts the oxidized photosensitizer and regenerates (process 3) the original photosensitizer. Good candidates for the role of photosensitizer are 9-anthracenecarboxylic acid [136] and metal complexes [137] such as [Ru(bpy) 3 ] 2 (bpy 2,2'-bipyridine), while efficient reductant scavengers are triethanolamine and polycarboxylate anions (for example, oxalate). [138] Under these conditions, the persistent reduction of a bipyridinium unit of 25 4 is achieved and the pseudorotaxane dethreads (process 4), as evidenced by absorption spectral changes and, more importantly, by the increase in the intensity of the 1,5-dioxynaphthalene fluorescence, which can only originate from free 26.…”
Section: Photochemically Controllable Complexesmentioning
confidence: 99%
“…The relatively fast back electron transfer from the reduced cyclophane component to the oxidized photosensitizer is prevented by the reductant which, if present in a sufficient amount (> 10 À2 m), intercepts the oxidized photosensitizer and regenerates (process 3) the original photosensitizer. Good candidates for the role of photosensitizer are 9-anthracenecarboxylic acid [136] and metal complexes [137] such as [Ru(bpy) 3 ] 2 (bpy 2,2'-bipyridine), while efficient reductant scavengers are triethanolamine and polycarboxylate anions (for example, oxalate). [138] Under these conditions, the persistent reduction of a bipyridinium unit of 25 4 is achieved and the pseudorotaxane dethreads (process 4), as evidenced by absorption spectral changes and, more importantly, by the increase in the intensity of the 1,5-dioxynaphthalene fluorescence, which can only originate from free 26.…”
Section: Photochemically Controllable Complexesmentioning
confidence: 99%
“…Liegt dieses in ausreichender Konzentration (> 10 À2 m) vor, fängt es den oxidierten Photosensibilisator ab und regeneriert ihn in seiner ursprünglichen Form (Schritt 3). Während für die Rolle des Photosensibilisators 9-Anthracencarbonsäure [136] und Metallkomplexe [137] wie [Ru(bpy) 3 ] 2 (bpy 2,2'-Bipyridin) viel versprechende Kandidaten sind, bieten sich effiziente Elektronendonoren wie Triethanolamin und Polycarboxylatanionen (z. B. Oxalat) als Reduktionsmittel an.…”
Section: Photochemisch Steuerbare Komplexeunclassified
“…(iii)Inherent PET efficiencies (h)c lose to unity have already been observed for one-electrono xidations of anthracene-localized triplets. [48,49,52,53] Consequently,s teps 1-3 in Scheme 2b/c are expected to proceed with very high efficiencies.…”
Section: Molecular Design and Ground State Properties Of The Dyadsmentioning
confidence: 99%