Results 311 to 320 of about 141,510 (340)
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Photochemistry of Bromofluorobenzenes
The Journal of Physical Chemistry A, 2006The photochemistry of low lying excited states of six different fluorinated bromobenzenes has been investigated by means of femtosecond laser spectroscopy and high level ab initio CASSCF/CASPT2 quantum chemical calculations. The objective of the work was to investigate how and to what extent light substituents, position on the benzene ring and number ...
Petter Persson +6 more
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Experientia, 1971
Per azione della luce ultravioletta la bilirubina disciolta in CHCl3-CH3OH somma una molecola di metanolo fornendo un prodotto per il quale si dimostra la struttura III. Tale reazione, osservata anche con altri alcooli, suggerisce la possibilita che parte della bilirubina del siero dei neonati itterici sottoposti a fototerapia venga eliminata sotto ...
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Per azione della luce ultravioletta la bilirubina disciolta in CHCl3-CH3OH somma una molecola di metanolo fornendo un prodotto per il quale si dimostra la struttura III. Tale reazione, osservata anche con altri alcooli, suggerisce la possibilita che parte della bilirubina del siero dei neonati itterici sottoposti a fototerapia venga eliminata sotto ...
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Photochemistry and Photobiology, 1968
Abstract— A method of dosimetry which is useful in analyzing complex photochemical reactions involving more than one photoproduct is described. This involves determining a photochemical cross section for each of the products, σB, σc…., and an absorption cross section σ. for the reacting species.
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Abstract— A method of dosimetry which is useful in analyzing complex photochemical reactions involving more than one photoproduct is described. This involves determining a photochemical cross section for each of the products, σB, σc…., and an absorption cross section σ. for the reacting species.
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Chemischer Informationsdienst, 1985
Organic photochemical reactions conducted in micellar solutions are reviewed from the standpoint of systematizing and correlating published results. Five common effects are found to distinguish and characterize micellar photochemistry relative to conventional solution photochemistry: “super” cage effects, local concentration effects, viscosity effects,
G. S. Cox +2 more
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Organic photochemical reactions conducted in micellar solutions are reviewed from the standpoint of systematizing and correlating published results. Five common effects are found to distinguish and characterize micellar photochemistry relative to conventional solution photochemistry: “super” cage effects, local concentration effects, viscosity effects,
G. S. Cox +2 more
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Photochemistry of Homoquinones
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Takumi Oshima, Ken Kokubo
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The photochemistry of metyrapone
Journal of the Chemical Society, Perkin Transactions 2, 1996Metyrapone [2-methyl-1,2-di(3-pyridyl)propan-2-one, 1] undergoes efficient α-cleavage via the noπ* triplet. The fate of the resulting acyl and alkyl radicals has been determined by transient studies as well as through the isolation of the final products, quantum yield measurements and trapping studies.
Fasani E +4 more
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1994
The breadth of scientific and technological interests in the general topic of photochemistry is truly enormous and includes, for example, such diverse areas as microelectronics, atmospheric chemistry, organic synthesis, non-conventional photoimaging, photosynthesis, solar energy conversion, polymer technologies, and spectroscopy.
R B Cundall +5 more
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The breadth of scientific and technological interests in the general topic of photochemistry is truly enormous and includes, for example, such diverse areas as microelectronics, atmospheric chemistry, organic synthesis, non-conventional photoimaging, photosynthesis, solar energy conversion, polymer technologies, and spectroscopy.
R B Cundall +5 more
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Atmospheric Environment (1967), 1987
Ozone plays a major role in the atmosphere, important chemical transformations in the troposphere, stratosphere, and mesosphere all being initiated by the absorption of radiation by ozone. This article surveys laboratory data concerning the photochemistry of ozone, and indicates the relevance of the laboratory studies to interpretations of atmospheric ...
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Ozone plays a major role in the atmosphere, important chemical transformations in the troposphere, stratosphere, and mesosphere all being initiated by the absorption of radiation by ozone. This article surveys laboratory data concerning the photochemistry of ozone, and indicates the relevance of the laboratory studies to interpretations of atmospheric ...
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Photochemistry of Photosynthesis
1991Publisher Summary Photosynthesis is composed of many individual steps that work together with high overall efficiency. The process can be divided three stages: the photochemical steps, electron transfer to which is coupled ATP formation, and the biochemical reactions involving the incorporation of CO2 into carbohydrates.
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1978
Publisher Summary This chapter describes the important photochemical reactions that occur in the atmosphere and that are significant for the nature of our environment. Anthropogenic emissions of oxides of nitrogen, and hydrocarbons from internal combustion automobile engines and stationary furnaces are major contributors to photochemical reactions in ...
Herbert M. Clark +4 more
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Publisher Summary This chapter describes the important photochemical reactions that occur in the atmosphere and that are significant for the nature of our environment. Anthropogenic emissions of oxides of nitrogen, and hydrocarbons from internal combustion automobile engines and stationary furnaces are major contributors to photochemical reactions in ...
Herbert M. Clark +4 more
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