Results 211 to 220 of about 22,798 (266)
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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 ...
O Anders, Borg +6 more
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PHOTOCHEMISTRY OF RETINOCHROME
Photochemistry and Photobiology, 1981Abstract— Retinochrome is a photopigment found in the visual cells of cephalopods. It has been considered to act as a supplier of the 11‐cis‐retinal required for synthesis of rhodopsin, because its all‐trans chromophore is isomerized to 11‐cis form in the light.
R, Hara +3 more
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Nature, 1967
The only action of light on the pigment of cone vision, iodopsin, as on the rod pigment rhodopsin, is to isomerize its chromophore from 11-cis to all-trans. All further changes are “dark” consequences of this one light reaction. Although this reaction initiates bleaching, its immediate product is a more intense pigment. At low temperatures in the dark,
T, Yoshizawa, G, Wald
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The only action of light on the pigment of cone vision, iodopsin, as on the rod pigment rhodopsin, is to isomerize its chromophore from 11-cis to all-trans. All further changes are “dark” consequences of this one light reaction. Although this reaction initiates bleaching, its immediate product is a more intense pigment. At low temperatures in the dark,
T, Yoshizawa, G, Wald
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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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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,
Nicholas J. Turro +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,
Nicholas J. Turro +2 more
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Science (New York, N.Y.), 1963
The study of photochemical reactions provides new information on the excited states of molecules.
Hammond, George S., Turro, Nicholas J.
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The study of photochemical reactions provides new information on the excited states of molecules.
Hammond, George S., Turro, Nicholas J.
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Photochemistry in Nature and Applied Photochemistry
2016Several photochemical reactions of organic compounds are occurring in nature for the evolution of life and their existence on earth. Such evolutionary processes of life have been brought about by photochemical reactions of organic molecules. Among these photochemical reactions, photosynthesis of plants, vision of animals and depletion of stratospheric ...
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Experientia, 1962
Le spectre d'absorption, les caracteristiques luminescentes et photochimiques de la riboflavine sont presentes. L'interpretation des donnees experimentales d'autres auteurs sur la decomposition photochimique de l'eau sensibilisee par la riboflavine est critiquee.
G, OSTER, J S, BELLIN, B, HOLMSTROM
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Le spectre d'absorption, les caracteristiques luminescentes et photochimiques de la riboflavine sont presentes. L'interpretation des donnees experimentales d'autres auteurs sur la decomposition photochimique de l'eau sensibilisee par la riboflavine est critiquee.
G, OSTER, J S, BELLIN, B, HOLMSTROM
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Photochemical & Photobiological Sciences, 2008
The use of a confined space in which to carry out reactions has proven popular in recent years, as demonstrated by the large volume of work published on 'molecular microreactors' such as zeolites, micelles and nanoparticles. This article looks at reactions in microstructured reactors, also known as microchannelled reactors or microreactors. In general,
Coyle, Emma E., Oelgemöller, Michael
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The use of a confined space in which to carry out reactions has proven popular in recent years, as demonstrated by the large volume of work published on 'molecular microreactors' such as zeolites, micelles and nanoparticles. This article looks at reactions in microstructured reactors, also known as microchannelled reactors or microreactors. In general,
Coyle, Emma E., Oelgemöller, Michael
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Nature, 1963
IN the course of an investigation of the ultra-violet irradiation of solid films of uracil and thymine1, certain inconsistencies were observed in the irradiation of thymine films which were unexplainable at the time and therefore not reported. Information now available has led to an investigation of the influence of humidity, more properly the vapour ...
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IN the course of an investigation of the ultra-violet irradiation of solid films of uracil and thymine1, certain inconsistencies were observed in the irradiation of thymine films which were unexplainable at the time and therefore not reported. Information now available has led to an investigation of the influence of humidity, more properly the vapour ...
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