Results 241 to 250 of about 1,210,569 (293)
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Photoinduced Charge Separation through a Negatively Charged Bridge
Inorganic Chemistry, 1998A novel ruthenium polypyridyl dyad has been prepared. In this compound the electron donor phenothiazine is covalently bound to the Ru(bpy)2 center (bpy = 2,2‘-bipyridyl) through a negatively charge...
S. FANNI +3 more
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The Journal of Physical Chemistry A, 2008
Laser-induced optoacoustic spectroscopy (LIOAS) measurements with carotene-porphyrin-acceptor "supermolecular" triads (C-P-A, with A = C60, a naphthoquinone NQ, and a naphthoquinone derivative, Q) were carried out with the purpose of analyzing the thermodynamic parameters for the formation and decay of the respective long-lived charge separated state C*
Alberto C, Rizzi +9 more
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Laser-induced optoacoustic spectroscopy (LIOAS) measurements with carotene-porphyrin-acceptor "supermolecular" triads (C-P-A, with A = C60, a naphthoquinone NQ, and a naphthoquinone derivative, Q) were carried out with the purpose of analyzing the thermodynamic parameters for the formation and decay of the respective long-lived charge separated state C*
Alberto C, Rizzi +9 more
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Phase separation, charge separation and biogenesis
Biosystems, 1981The current view of bioenergetics postulates transmembrane charge separation as a primary mechanism of energy storage and transformation. Using that bioenergetic view we examine possible methods of photon driven transduction in primordial vesicles.
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Charge separation mass spectrometry
International Journal of Mass Spectrometry and Ion Processes, 1990Abstract Charge separation following double ionization of organic methyl compounds has been studied using the photoelectron—photoion—photoion triple coincidence technique. Two- and three-body dissociation pathways are observed with intensities related to the thermochemical stability of the products and to their odd/even electron numbers.
E. Ruhl +3 more
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Photoinduced Charge Separation in Microemulsions
1992Abstract Photoinduced charge separation was studied in a variety of microemulsions. The photosystem consisted of a porphyrin equipped with a hexadecyl chain, methylviologen as the electron acceptor and tributylamine as an irreversible electron donor. The cetyltrimethylammonium bromide (CTAB) based microemulsions were varied with respect to the alkyl ...
Verhaert, R.M.D. +3 more
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Photoinduced Charge-Separation in DNA
2014DNA site-specifically modified with a photosensitizer (Sens) was synthesized and the charge-separation and charge-recombination dynamics in DNA were studied. We specifically focused on the formation of the long-lived charge-separated state whose lifetime (τ) is longer than 0.1 μs.
Kiyohiko, Kawai, Tetsuro, Majima
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Photoinduced Symmetry‐Breaking Charge Separation
ChemPhysChem, 2012AbstractMolecular systems where several apparently equivalent charge separation pathways exist upon photoexcitation are presented. They encompass MQn (n≥2) architectures, where M is a chromophore and Q an electron transfer quencher (either donor or acceptor), and M–M systems where M acts as both electron donor and acceptor.
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The European Physical Journal B, 2004
The common theory of reversible charge transfer (RCT) at low donor system excitation power in liquids is examined. The space averaging procedures describing the kinetics of RCT in the liquid space are discussed. The reaction space is presented as a totality of independent subgroups with one excited donor and some group of acceptors effectively ...
M. S. Mikhelashvili, O. Agam
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The common theory of reversible charge transfer (RCT) at low donor system excitation power in liquids is examined. The space averaging procedures describing the kinetics of RCT in the liquid space are discussed. The reaction space is presented as a totality of independent subgroups with one excited donor and some group of acceptors effectively ...
M. S. Mikhelashvili, O. Agam
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Photoinduced Charge Separation in Titania Nanotubes
The Journal of Physical Chemistry B, 2006The photocatalytic one-electron oxidation reaction of an aromatic compound during UV light irradiation of titania nanotubes and nanoparticles was investigated using time-resolved diffuse reflectance spectroscopy. Remarkably long-lived radical cations of the aromatic compound and trapped electrons were observed for the nanotubes when compared to those ...
Takashi, Tachikawa +4 more
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Science, 2017
Electrochemistry Solid and liquid electrolytes allow for charges or ions to move while keeping anodes and cathodes separate. Separation prevents short circuits from occurring in energy storage devices. Rustomji et al. show that separation can also be achieved by using fluorinated hydrocarbons that are liquefied under pressure.
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Electrochemistry Solid and liquid electrolytes allow for charges or ions to move while keeping anodes and cathodes separate. Separation prevents short circuits from occurring in energy storage devices. Rustomji et al. show that separation can also be achieved by using fluorinated hydrocarbons that are liquefied under pressure.
openaire +2 more sources