Structure-activity correlations among iridium(III) photosensitizers in a robust water-reducing system.
作者： Peter N. Curtin , Leonard L. Tinker , Christine M. Burgess , Eric D. Cline , Stefan Bernhard
DOI: 10.1021/IC9007763
关键词:
摘要: A photocatalytic water-reducing system utilizing a bis-cyclometalated bipyridyl iridium(III) photosensitizer (PS) and platinum or palladium heterogeneous catalyst was used to identify systematic property−activity correlations among library of structural derivatives [Ir(ppy)2(bpy)]+. Pd proved be more durable than its previously reported Pt-based counterpart, allowing for reliable study. The deliberate steric electronic variations the ppy bpy moieties resulted in dramatic decrease degradation rates observed with selected photosensitizers when compared substitution-labile [Ir(ppy)2(bpy)]+ parent compound. An improved structure nonligating solvent exhibited 150-fold increase turnover numbers using Pt catalyst. Furthermore, photophysical studies at varied temperatures provided information on rate-limit...
acs.org
core.ac.uk 
sci-hub.se 参考文章(35)
Jason A. Widegren, Richard G. Finke, A review of the problem of distinguishing true homogeneous catalysis from soluble or other metal-particle heterogeneous catalysis under reducing conditions Journal of Molecular Catalysis A-chemical. ,vol. 198, pp. 317- 341 ,(2003) , 10.1016/S1381-1169(02)00728-8
Arthur J. Esswein, Adam S. Veige, Daniel G. Nocera, A Photocycle for Hydrogen Production from Two-Electron Mixed-Valence Complexes Journal of the American Chemical Society. ,vol. 127, pp. 16641- 16651 ,(2005) , 10.1021/JA054371X
Raymond Ziessel, Jeannot Hawecker, Jean-Marie Lehn, Photogeneration of Carbon Monoxide and of Hydrogen via Simultaneous Photochemical Reduction of Carbon Dioxide and Water by Visible‐Light Irradiation of Organic Solutions Containing Tris(2,2′‐bipyridine)ruthenium(II) and Cobalt(II) Species as Homogeneous Catalysts Helvetica Chimica Acta. ,vol. 69, pp. 1065- 1084 ,(1986) , 10.1002/HLCA.19860690514
Edmond Amouyal, Patrick Keller, Alec Moradpour, Light-induced hydrogen generation from water catalysed by ruthenium dioxide Journal of the Chemical Society, Chemical Communications. pp. 1019- 1020 ,(1980) , 10.1039/C39800001019
Patricia J. DeLaive, B. P. Sullivan, T. J. Meyer, D. G. Whitten, Applications of light-induced electron-transfer reactions. Coupling of hydrogen generation with photoreduction of ruthenium(II) complexes by triethylamine Journal of the American Chemical Society. ,vol. 101, pp. 4007- 4008 ,(1979) , 10.1021/JA00508A070
Oddvar Johansen, Albert W.-H. Mau, Wolfgang H.F. Sasse, The 9-anthracenecarboxylate anion as sensitizer for the photoreduction of water Chemical Physics Letters. ,vol. 94, pp. 107- 112 ,(1983) , 10.1016/0009-2614(83)87220-0
Francesco Barigelletti, Alberto Juris, Vincenzo Balzani, Peter Belser, Alex Von Zelewsky, Temperature dependence of the luminescence emission of ruthenium(II) complexes containing the ligands 2,2'-bipyridine and dipyrido[3,2-c:2',3'-e]pyridazine The Journal of Physical Chemistry. ,vol. 90, pp. 5190- 5193 ,(1986) , 10.1021/J100412A059
N. S. Lewis, D. G. Nocera, Powering the planet: Chemical challenges in solar energy utilization Proceedings of the National Academy of Sciences of the United States of America. ,vol. 103, pp. 15729- 15735 ,(2006) , 10.1073/PNAS.0603395103
F. Barigelletti, A. Juris, V. Balzani, P. Belser, A. Von Zelewsky, Temperature dependence of the bis(2,2'-bipyridine)dicyanoruthenium(II) and bis(2,2'-bipyridine)(2,2'-isobiquinoline)ruthenium(II) luminescence The Journal of Physical Chemistry. ,vol. 91, pp. 1095- 1098 ,(1987) , 10.1021/J100289A018
Eric D. Cline, Samantha E. Adamson, Stefan Bernhard, Homogeneous catalytic system for photoinduced hydrogen production utilizing iridium and rhodium complexes. Inorganic Chemistry. ,vol. 47, pp. 10378- 10388 ,(2008) , 10.1021/IC800988B