Generation of O− Radical Anions on MgO Surface: Long-Distance Charge Separation or Homolytic Dissociation of Chemisorbed Water?

2009 ◽  
Vol 113 (24) ◽  
pp. 10350-10353 ◽  
Author(s):  
Sergei E. Malykhin ◽  
Alexander M. Volodin ◽  
Alexander F. Bedilo ◽  
George M. Zhidomirov
Keyword(s):  
Charge Separation ◽  
Radical Anions ◽  
Long Distance ◽  
Mgo Surface ◽  
Homolytic Dissociation

Reactivity of (H+)(e−) color centers at the MgO surface: formation of O2− and N2− radical anions

2003 ◽  
Vol 542 (3) ◽  
pp. 293-306 ◽  
Author(s):  
Davide Ricci ◽  
Gianfranco Pacchioni ◽  
Peter V Sushko ◽  
Alexander L Shluger
Keyword(s):  
Color Centers ◽  
Radical Anions ◽  
Surface Formation ◽  
Mgo Surface

Short- and long-distance porphyrin heterodimers in bulk aqueous solution and nanowells

2004 ◽  
Vol 08 (02) ◽  
pp. 120-124 ◽  
Author(s):  
Jürgen-Hinrich Fuhrhop ◽  
Tianyu Wang ◽  
Sheshanath Bhosale ◽  
Sidhanath Bhosale
Keyword(s):  
Aqueous Solution ◽  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Charge Separation ◽  
Short Distance ◽  
Molecular Complexes ◽  
Separation Process ◽  
Redox Systems ◽  
Long Distance ◽  
Acceptor Molecules

Short-distance porphyrin heterodimers may be used for very efficient titrations in water measuring fluorescence quenching in 1:1 molecular complexes between diamagnetic and paramagnetic metalloporphyrins. Radical dimers produce strong charge transfer bands near 900 nm. Long-distance heterodimers, e.g. chlorophyll-ubiquinone, play a central role in the charge separation process of biological photosynthesis. Attempts to model such dimers in form-stable nanowells are discussed and compared with corresponding molecular complexes and covalent redox systems. Heterodimers may, of course, not only be made of two porphyrins. Other acceptor molecules, which fit exactly in the nanowells, e.g. large quinones may also be applied.

Formation of CO2− Radical Anions from CO2 Adsorption on an Electron-Rich MgO Surface: A Combined ab Initio and Pulse EPR Study

2008 ◽  
Vol 112 (49) ◽  
pp. 19568-19576 ◽  
Author(s):  
Gloria Preda ◽  
Gianfranco Pacchioni ◽  
Mario Chiesa ◽  
Elio Giamello
Keyword(s):  
Ab Initio ◽  
Co2 Adsorption ◽  
Radical Anions ◽  
Pulse Epr ◽  
Mgo Surface

Synthesis and Photophysical Properties of Two Dual Oligothiophene-Fullerene Linkage Molecules as Photoinduced Long-Distance Charge Separation Systems

2006 ◽  
Vol 71 (5) ◽  
pp. 1761-1768 ◽  
Author(s):  
Masashi Narutaki ◽  
Kazuo Takimiya ◽  
Tetsuo Otsubo ◽  
Yutaka Harima ◽  
Huimin Zhang ◽  
...  
Keyword(s):  
Charge Separation ◽  
Photophysical Properties ◽  
Long Distance ◽  
Separation Systems

Intramolecular charge separation and recombination in non-polar environments via long-distance electron transfer through saturated hydrocarbon barriers

1993 ◽  
Vol 170 (3) ◽  
pp. 359-380 ◽  
Author(s):  
John M. Warman ◽  
Kenneth J. Smit ◽  
Stephan A. Jonker ◽  
Jan W. Verhoeven ◽  
Henk Oevering ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Saturated Hydrocarbon ◽  
Long Distance

Long-lived long-distance photochemically induced spin-polarized charge separation in β,β′-pyrrolic fused ferrocene-porphyrin-fullerene systems

2012 ◽  
Vol 3 (1) ◽  
pp. 257-269 ◽  
Author(s):  
Sai-Ho Lee ◽  
Allan G. Larsen ◽  
Kei Ohkubo ◽  
Zheng-Li Cai ◽  
Jeffrey R. Reimers ◽  
...  
Keyword(s):  
Charge Separation ◽  
Long Distance ◽  
Spin Polarized
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