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Journal articles on the topic 'Photochemical processes'

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1

Melchiorre, Paolo. "Introduction: Photochemical Catalytic Processes." Chemical Reviews 122, no. 2 (January 26, 2022): 1483–84. http://dx.doi.org/10.1021/acs.chemrev.1c00993.

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2

Reuther, A., A. Laubereau, and D. N. Nikogosyan. "Primary Photochemical Processes in Water." Journal of Physical Chemistry 100, no. 42 (January 1996): 16794–800. http://dx.doi.org/10.1021/jp961462v.

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3

Hrdlovic, Pavol. "Photochemical Reactions and Photophysical Processes." Polymer News 30, no. 12 (December 2005): 380–84. http://dx.doi.org/10.1080/00323910500402870.

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4

Hrdlovič, Pavol. "Photochemical Reactions and Photophysical Processes." Polymer News 30, no. 3 (April 2005): 86–89. http://dx.doi.org/10.1080/00323910500459029.

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5

Stroyuk, O. L., N. S. Andryushina, S. Ya Kuchmy, and V. D. Pokhodenko. "Photochemical Processes Involving Graphene Oxide." Theoretical and Experimental Chemistry 51, no. 1 (March 2015): 1–29. http://dx.doi.org/10.1007/s11237-015-9393-y.

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6

Legrini, O., E. Oliveros, and A. M. Braun. "Photochemical processes for water treatment." Chemical Reviews 93, no. 2 (March 1993): 671–98. http://dx.doi.org/10.1021/cr00018a003.

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7

Young, Douglas D., and Alexander Deiters. "Photochemical control of biological processes." Org. Biomol. Chem. 5, no. 7 (2007): 999–1005. http://dx.doi.org/10.1039/b616410m.

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8

Frei, H., and G. C. Pimentel. "Infrared Induced Photochemical Processes in Matrices." Annual Review of Physical Chemistry 36, no. 1 (October 1985): 491–524. http://dx.doi.org/10.1146/annurev.pc.36.100185.002423.

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9

Song, Pill-Soon. "Photochemical Processes in Organized Molecular Systems." Photochemistry and Photobiology 56, no. 2 (August 1992): 285. http://dx.doi.org/10.1111/j.1751-1097.1992.tb02160.x.

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10

Yilmaz, Gorkem, and Yusuf Yagci. "New Photochemical Processes for Macromolecular Syntheses." Journal of Photopolymer Science and Technology 29, no. 1 (2016): 91–98. http://dx.doi.org/10.2494/photopolymer.29.91.

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11

Smirnov, V. A., N. N. Denisov, V. G. Plotnikov, and M. V. Alfimov. "Photochemical processes in graphene oxide films." High Energy Chemistry 50, no. 1 (January 2016): 51–59. http://dx.doi.org/10.1134/s0018143916010070.

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12

Hrdlovič, Pavol. "Column: Photochemical Reactions and Photophysical Processes." Polymer News 29, no. 2 (February 2004): 50–53. http://dx.doi.org/10.1080/00323910490980679.

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13

Hrdlovič, Pavol. "Column: Photochemical Reactions and Photophysical Processes." Polymer News 29, no. 6 (June 2004): 187–93. http://dx.doi.org/10.1080/00323910490981074.

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14

Hrdlovič, Pavol. "Column: Photochemical Reactions and Photophysical Processes." Polymer News 29, no. 8 (August 2004): 247–52. http://dx.doi.org/10.1080/00323910490981263.

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15

Hrdlovič, Pavol. "Column: Photochemical Reactions and Photophysical Processes." Polymer News 29, no. 10 (October 2004): 311–14. http://dx.doi.org/10.1080/00323910490981452.

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16

Hrdlovič, Pavol. "Column: Photochemical Reactions and Photophysical Processes." Polymer News 29, no. 12 (December 2004): 368–70. http://dx.doi.org/10.1080/00323910490981623.

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17

Hrdlovic, Pavol. "Column: Photochemical Reactions and Photophysical Processes." Polymer News 30, no. 10 (October 2005): 322–26. http://dx.doi.org/10.1080/00323910500290382.

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18

Hrdlovič, Pavol. "Columns: Photochemical Reactions and Photophysical Processes." Polymer News 30, no. 8 (August 2005): 248–50. http://dx.doi.org/10.1080/00323910500458450.

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19

Hrdlovič, Pavol. "Columns: Photochemical Reactions and Photophysical Processes." Polymer News 30, no. 6 (June 2005): 179–82. http://dx.doi.org/10.1080/00323910500458674.

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20

Sussman, B. J., D. Townsend, M. Yu Ivanov, and A. Stolow. "Dynamic Stark Control of Photochemical Processes." Science 314, no. 5797 (October 13, 2006): 278–81. http://dx.doi.org/10.1126/science.1132289.

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21

Do Nascimento, Claudio A. O., Esther Oliveros, and André M. Braun. "Neural network modelling for photochemical processes." Chemical Engineering and Processing: Process Intensification 33, no. 5 (November 1994): 319–24. http://dx.doi.org/10.1016/0255-2701(94)02002-7.

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22

Dutta, Prabir K., and Yanghee Kim. "Photochemical processes in zeolites: new developments." Current Opinion in Solid State and Materials Science 7, no. 6 (December 2003): 483–90. http://dx.doi.org/10.1016/j.cossms.2004.02.004.

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23

Moortgat, Geert K. "Important photochemical processes in the atmosphere." Pure and Applied Chemistry 73, no. 3 (January 1, 2001): 487–90. http://dx.doi.org/10.1351/pac200173030487.

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Among the many important roles played by ozone in the atmosphere is the role it plays in the generation of OH radicals, which are responsible for initiating the oxidation of a wide variety of atmospheric trace constituents. The OH production occurs dominantly from the formation of the excited O(1D) species in the UV photolysis of ozone, followed by the reaction of O(1D) with H2O vapor. The photochemistry of ozone is very complex, as the relatively weak bonds in ozone allow different states of the O and O2 photoproducts to be accessed. Recent detailed studies have now revealed that different photolysis channels are occurring in the 290­375 nm spectral range, the region of importance for the generation of OH radicals in the lower atmosphere. The measured temperature-dependent quantum yields for the production of O(1D) atoms reflect the importance of the longer "wavelength tail" formation with regard to the enhanced OH production. Other significant atmospheric photolysis processes involving carbonyl compounds are reported. Direct photodissociation rates were measured in the outdoor photoreactor EUPHORE in Valencia and compared with model calculations. For most of the carbonyl compounds the effective quantum yields are significantly below unity.
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24

Zhai, Peng-Wang, Emmanuel Boss, Bryan Franz, P. Werdell, and Yongxiang Hu. "Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes." Remote Sensing 10, no. 8 (August 20, 2018): 1309. http://dx.doi.org/10.3390/rs10081309.

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We report the first radiative transfer model that is able to simulate phytoplankton fluorescence with both photochemical and non-photochemical quenching included. The fluorescence source term in the inelastic radiative transfer equation is proportional to both the quantum yield and scalar irradiance at excitation wavelengths. The photochemical and nonphotochemical quenching processes change the quantum yield based on the photosynthetic active radiation. A sensitivity study was performed to demonstrate the dependence of the fluorescence signal on chlorophyll a concentration, aerosol optical depths and solar zenith angles. This work enables us to better model the phytoplankton fluorescence, which can be used in the design of new space-based sensors that can provide sufficient sensitivity to detect the phytoplankton fluorescence signal. It could also lead to more accurate remote sensing algorithms for the study of phytoplankton physiology.
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25

Eletskii, Aleksandr V. "Photoacoustic, photothermal and photochemical processes in gases." Uspekhi Fizicheskih Nauk 160, no. 5 (1990): 146. http://dx.doi.org/10.3367/ufnr.0160.199005h.0146.

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26

Berthelot, Yves H. "Photoacoustics, Photothermal and Photochemical Processes in Gases." Journal of the Acoustical Society of America 88, no. 3 (September 1990): 1665–66. http://dx.doi.org/10.1121/1.400295.

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27

Eletskiĭ, A. V. "Photoacoustic, photothermal and photochemical processes in gases." Soviet Physics Uspekhi 33, no. 5 (May 31, 1990): 396. http://dx.doi.org/10.1070/pu1990v033n05abeh002593.

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28

Thomas, J. K. "Photophysical and photochemical processes on clay surfaces." Accounts of Chemical Research 21, no. 7 (July 1988): 275–80. http://dx.doi.org/10.1021/ar00151a004.

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29

Tsuboi, T., and V. V. Ter-Mikirtychev. "Photochemical processes during LiF:F3+ color center lasing." Applied Surface Science 106 (October 1996): 447–50. http://dx.doi.org/10.1016/s0169-4332(96)00404-7.

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30

de Castro Peixoto, André Luís, and Antonio Carlos Silva Costa Teixeira. "Degradation of amicarbazone herbicide by photochemical processes." Journal of Photochemistry and Photobiology A: Chemistry 275 (February 2014): 54–64. http://dx.doi.org/10.1016/j.jphotochem.2013.10.013.

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31

Héquet, V., C. Gonzalez, and P. Le Cloirec. "Photochemical processes for atrazine degradation: methodological approach." Water Research 35, no. 18 (December 2001): 4253–60. http://dx.doi.org/10.1016/s0043-1354(01)00166-x.

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32

Herek, Jennifer L. "Coherent control of photochemical and photobiological processes." Journal of Photochemistry and Photobiology A: Chemistry 180, no. 3 (June 2006): 225. http://dx.doi.org/10.1016/j.jphotochem.2006.03.035.

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33

Takayanagi, Masao, and Ichiro Hanazaki. "Photochemical processes in weakly bound binary complexes." Chemical Reviews 91, no. 6 (September 1991): 1193–212. http://dx.doi.org/10.1021/cr00006a004.

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34

Blough, Neil V., and Barbara Sulzberger. "Impact of photochemical processes in the hydrosphere." Aquatic Sciences - Research Across Boundaries 65, no. 4 (December 1, 2003): 317–19. http://dx.doi.org/10.1007/s00027-003-0003-z.

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35

Specht, Alexandre, Frédéric Bolze, Ziad Omran, Jean‐François Nicoud, and Maurice Goeldner. "Photochemical tools to study dynamic biological processes." HFSP Journal 3, no. 4 (August 2009): 255–64. http://dx.doi.org/10.2976/1.3132954.

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36

Goddard, John D. "The quantum chemistry of some photochemical processes." Journal of Molecular Structure: THEOCHEM 149, no. 1-2 (January 1987): 39–49. http://dx.doi.org/10.1016/0166-1280(87)80044-1.

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37

Hrdlovic, Pavol. "ChemInform Abstract: Photochemical Reactions and Photophysical Processes." ChemInform 32, no. 19 (May 8, 2001): no. http://dx.doi.org/10.1002/chin.200119255.

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38

LEGRINI, O., E. OLIVEROS, and A. M. BRAUN. "ChemInform Abstract: Photochemical Processes for Water Treatment." ChemInform 24, no. 28 (August 20, 2010): no. http://dx.doi.org/10.1002/chin.199328333.

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39

Klán, Petr, Jaromı́r Literák, and Stanislav Relich. "Molecular photochemical thermometers: investigation of microwave superheating effects by temperature dependent photochemical processes." Journal of Photochemistry and Photobiology A: Chemistry 143, no. 1 (October 2001): 49–57. http://dx.doi.org/10.1016/s1010-6030(01)00481-6.

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40

Gao, Zhiyuan, Nicolas-Xavier Geilfus, Alfonso Saiz-Lopez, and Feiyue Wang. "Reproducing Arctic springtime tropospheric ozone and mercury depletion events in an outdoor mesocosm sea ice facility." Atmospheric Chemistry and Physics 22, no. 3 (February 8, 2022): 1811–24. http://dx.doi.org/10.5194/acp-22-1811-2022.

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Abstract. The episodic buildup of gas-phase reactive bromine species over sea ice and snowpack in the springtime Arctic plays an important role in boundary layer processes, causing annual concurrent depletion of ozone and gaseous elemental mercury (GEM) during polar sunrise. Extensive studies have shown that these phenomena, known as bromine explosion events (BEEs), ozone depletion events (ODEs), and mercury depletion events (MDEs) are all triggered by reactive bromine species that are photochemically activated from bromide via multi-phase reactions under freezing air temperatures. However, major knowledge gaps exist in both fundamental cryo-photochemical processes causing these events and meteorological conditions that may affect their timing and magnitude. Here, we report an outdoor mesocosm study in which we successfully reproduced ODEs and MDEs at the Sea-ice Environmental Research Facility (SERF) in Winnipeg, Canada. By monitoring ozone and GEM concentrations inside large acrylic tubes over bromide-enriched artificial seawater during sea ice freeze-and-melt cycles, we observed mid-day photochemical ozone and GEM loss in winter in the in-tube boundary layer air immediately above the sea ice surface in a pattern that is characteristic of BEE-induced ODEs and MDEs in the Arctic. The importance of UV radiation and the presence of a condensed phase (experimental sea ice or snow) in causing such reactions were demonstrated by comparing ozone and GEM concentrations between the UV-transmitting and UV-blocking acrylic tubes under different air temperatures. The ability of reproducing BEE-induced photochemical phenomena in a mesocosm in a non-polar region provides a new approach to systematically studying the cryo-photochemical processes and meteorological conditions leading to BEEs, ODEs, and MDEs in the Arctic, their role in biogeochemical cycles across the ocean–sea ice–atmosphere interface, and their sensitivities to climate change.
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41

Awungacha Lekelefac, Colin, Nadine Busse, Michael Herrenbauer, and Peter Czermak. "Photocatalytic Based Degradation Processes of Lignin Derivatives." International Journal of Photoenergy 2015 (2015): 1–18. http://dx.doi.org/10.1155/2015/137634.

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Photocatalysis, belonging to the advanced oxidation processes (AOPs), is a potential new transformation technology for lignin derivatives to value added products (e.g., phenol, benzene, toluene, and xylene). Moreover, lignin represents the only viable source to produce aromatic compounds as fossil fuel alternative. This review covers recent advancement made in the photochemical transformation of industrial lignins. It starts with the photochemical reaction principle followed by results obtained by varying process parameters. In this context, influences of photocatalysts, metal ions, additives, lignin concentration, and illumination intensity and the influence of pH are presented and discussed. Furthermore, an overview is given on several used process analytical methods describing the results obtained from the degradation of lignin derivatives. Finally, a promising concept by coupling photocatalysis with a consecutive biocatalytic process was briefly reviewed.
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42

ZHU, X. Y. "ISOTOPE EFFECT IN SURFACE PHOTOCHEMICAL PROCESSES: EXPERIMENT AND THEORY." Modern Physics Letters B 06, no. 30 (December 30, 1992): 1893–910. http://dx.doi.org/10.1142/s0217984992001605.

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A photochemical process in the adsorbate state has an inherent isotope or mass effect. This is because the presence of a solid surface introduces efficient relaxation channels for the electronically excited molecule. Competition between the chemical event and the quenching process is mass-dependent. Depending on the details of the dynamic energy transfer process, the isotope effect in a surface photochemical event can depend on either the mass or the internal reduced mass of the desorbing/dissociating particle. Measurements of isotope effect in UV surface photochemistry have provided insight into two mechanistic models, i.e., the classic Menzel-Gomer-Redhead (MGR) model and its recent variation, the vibration-mediated UV photodesorption (VMPD) model.
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43

YOSHIHARA, Keitaro. "Spectroscopic measurements in photochemistry. II. Ultrafast photochemical processes." Journal of the Spectroscopical Society of Japan 39, no. 2 (1990): 123–35. http://dx.doi.org/10.5111/bunkou.39.123.

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44

ARMBRUST, Kevin L. "Photochemical Processes Influencing Pesticide Degradation in Rice Paddies." Journal of Pesticide Science 24, no. 1 (1999): 69–73. http://dx.doi.org/10.1584/jpestics.24.69.

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45

Nese, Chandrasekhar, and Andreas-Neil Unterreiner. "Photochemical processes in ionic liquids on ultrafast timescales." Physical Chemistry Chemical Physics 12, no. 8 (2010): 1698. http://dx.doi.org/10.1039/b916799b.

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46

Zhao, Yunmeng, Chaojie Zhang, Liquan Chu, Qi Zhou, Baorong Huang, Ruixin Ji, Xuefei Zhou, and Yalei Zhang. "Hydrated electron based photochemical processes for water treatment." Water Research 225 (October 2022): 119212. http://dx.doi.org/10.1016/j.watres.2022.119212.

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47

Gobeze, Habtom B., Venugopal Bandi, and Francis D'Souza. "Bis(subphthalocyanine)–azaBODIPY triad for ultrafast photochemical processes." Physical Chemistry Chemical Physics 16, no. 35 (July 18, 2014): 18720. http://dx.doi.org/10.1039/c4cp02707h.

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48

Li, Ye, Jian Ping Zhang, Jie Xie, Jing Quan Zhao, and Li Jin Jiang. "Detection of the photochemical intermediate processes in phycobiliproteins." Research on Chemical Intermediates 26, no. 7-8 (July 2000): 775–84. http://dx.doi.org/10.1163/156856700x00688.

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49

Yova, Dido, Vladimir Hovhannisyan, and Theodossis Theodossiou. "Photochemical effects and hypericin photosensitized processes in collagen." Journal of Biomedical Optics 6, no. 1 (2001): 52. http://dx.doi.org/10.1117/1.1331559.

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50

Rasanen, M., J. Murto, and V. E. Bondybey. "Photochemical processes in 2-fluoroethanol in solid neon." Journal of Physical Chemistry 89, no. 19 (September 1985): 3967–70. http://dx.doi.org/10.1021/j100265a009.

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