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Автор: Grafiati

Опубліковано: 7 вересня 2023

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1

Leyva, Elisa, Denisse de Loera, Claudia G. Espinosa-González, and Saúl Noriega. "Physicochemical Properties and Photochemical Reactions in Organic Crystals." Current Organic Chemistry 23, no. 3 (May 9, 2019): 215–55. http://dx.doi.org/10.2174/1385272822666190313152105.

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Background: Molecular organic photochemistry is concerned with the description of physical and chemical processes generated upon the absorption of photons by organic molecules. Recently, it has become an important part of many areas of science: chemistry, biology, biochemistry, medicine, biophysics, material science, analytical chemistry, among others. Many synthetic chemists are using photochemical reactions in crystals to generate different types of organic compounds since this methodology represents a green chemistry approach. Objective & Method: Chemical reactions in crystals are quite different from reactions in solution. The range of organic solid state reactions and the degree of control which could be achieved under these conditions are quite wider and subtle. Therefore, for a large number of molecular crystals, the photochemical outcome is not the expected product based on topochemical principles. To explain these experimental results, several physicochemical factors in crystal structure have been proposed such as defects, reaction cavity, dynamic preformation or photoinduced lattice instability and steric compression control. In addition, several crystal engineering strategies have been developed to bring molecules into adequate orientations with reactive groups in good proximity to synthesize complex molecules that in many cases are not available by conventional methods. Some strategies involve structural modifications like intramolecular substitution with different functional groups to modify intermolecular interactions. Other strategies involve chemical techniques such as mixed crystal formation, charge transfer complexes, ionic and organometallic interactions. Furthermore, some examples of the single crystal to single crystal transformations have also been developed showing an elegant method to achieve regio and stereoselectivity in a photochemical reaction. Conclusion: The several examples given in this review paper have shown the wide scope of photochemical reactions in organic molecular crystals. There are several advantages of carrying photochemical reaction in the solid state. Production of materials unobtainable by the traditional solution phase reactions, improved specificity, reduction of impurities, and enhancement in the yields by the reduction of side reactions. These advantages and the multidisciplinary nature of solid-state photochemistry make this discipline quite likely to develop a lot in the future.

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2

Porcal, P., P. J. Dillon, and L. A. Molot. "Seasonal changes in photochemical properties of dissolved organic matter." Biogeosciences Discussions 10, no. 3 (March 27, 2013): 5977–6006. http://dx.doi.org/10.5194/bgd-10-5977-2013.

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Abstract. The fate of dissolved organic matter (DOM) in lakes and streams is significantly affected by photochemical transformation of DOM. A series of laboratory photochemical experiments was conducted to describe long-term changes in photochemical properties of DOM. The stream samples used in this study originated from three different catchments on the southern-most part of the Boreal ecozone near Dorset, Ontario, Canada. A first-order kinetics equation was used to model photochemical degradation of DOM and the kinetic rate constant, K, was used as an indicator of photochemical properties of DOM. Highest Kwas observed in samples from the catchment dominated by coniferous forest while the lowest K was measured in the deciduous catchment. Kinetic rate constants from all three catchments showed a sinusoidal pattern during the hydrological year. K increased steadily during autumn and winter and decreased during spring and summer. The highest values were observed during spring melt events when DOM was flushed from terrestrial sources by high flows. The minimum rate constants were found in summer when discharge was lowest. DOM molecular weight and specific absorbance at 254 nm also exhibited annual cycles corresponding to the seasonal cycles of terrestrial organic matter but the relationships between these properties and K was probably affected by previous exposure to solar radiation during transit from the catchment as well as pH and iron.

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3

Budyka, M. F., M. M. Kantor, and R. M. Fatkulbayanov. "Photochemical properties of 9-(4-azidophenyl)acridine." Chemistry of Heterocyclic Compounds 33, no. 11 (November 1997): 1301–5. http://dx.doi.org/10.1007/bf02320332.

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4

Zakharova, Natalia, Olga Savinova, and Akmaral Utelbayeva. "Photochemical Properties of Propargylamine-based Polymers." Materiale Plastice 58, no. 3 (October 5, 2021): 32–40. http://dx.doi.org/10.37358/mp.21.3.5501.

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Propargylamines are a promising but quite poorly studied category of organic compounds. This work aimed to study the photochemical properties of propargylamines polymers containing porphyrin fragments with electron transfer reactions. The study was carried out in 2019 at the Institute of Organic Chemistry (RAS, Moscow, Russia). The obtained polymer was irradiated with a luminous source. The absorption spectra were studied by electron paramagnetic resonance using a radio spectrometer. The presence of porphyrin and propargylamine in the polymer solution has been established to promote the reaction of complexation. This is due to the presence of double bonds in the amino groups, whereas also porphyrin and bromanil, which is an electron acceptor. The resulting data allow explaining the processes involved in photochemical reactions during the irradiation of the porphyrin complex in the presence of bromanil. In the long-wavelength part of the spectrum (above 540 nm), electron phototransfer inside the polymer molecule to the porphyrin side and between molecules from the porphyrin anion radical to the neutral polymer molecule take place.

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5

Zakharova, Natalia, Olga Savinova, and Akmaral Utelbayeva. "Photochemical Properties of Propargylamine-based Polymers." Materiale Plastice 58, no. 3 (October 5, 2021): 32–40. http://dx.doi.org/10.37358/mp.21.3.5501.

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Анотація:

Propargylamines are a promising but quite poorly studied category of organic compounds. This work aimed to study the photochemical properties of propargylamines polymers containing porphyrin fragments with electron transfer reactions. The study was carried out in 2019 at the Institute of Organic Chemistry (RAS, Moscow, Russia). The obtained polymer was irradiated with a luminous source. The absorption spectra were studied by electron paramagnetic resonance using a radio spectrometer. The presence of porphyrin and propargylamine in the polymer solution has been established to promote the reaction of complexation. This is due to the presence of double bonds in the amino groups, whereas also porphyrin and bromanil, which is an electron acceptor. The resulting data allow explaining the processes involved in photochemical reactions during the irradiation of the porphyrin complex in the presence of bromanil. In the long-wavelength part of the spectrum (above 540 nm), electron phototransfer inside the polymer molecule to the porphyrin side and between molecules from the porphyrin anion radical to the neutral polymer molecule take place.

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6

Lastovoy, Anton P., Nina A. Kuznetsova, Ludmila K. Slivka, and Elena A. Makarova. "Photochemical properties of substituted tetraazachlorins." Journal of Porphyrins and Phthalocyanines 18, no. 06 (June 2014): 457–64. http://dx.doi.org/10.1142/s1088424614500187.

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The photochemical properties of water-insoluble metal-free tetraazachlorin derivatives in organic solvents and aqueous micellar solutions of nonionic surfactants were investigated. The quantum yields of fluorescence, singlet oxygen generation and photodegradation were evaluated in benzene. The highest photostability and singlet oxygen quantum yield (ΦΔ = 0.7) was found for 2,2,3,3-tetramethyl-7,8,12,13,17,18-hexaphenyltetraazachlorin. The moderate ΦΔ values (0.21–0.35) of triarenotetraazachlorins in benzene were established. Expansion of tetraazachlorin π-system by fusion of three aromatic rings leads to reduction of efficiency of singlet oxygen generation. The study of photodegradation mechanism shows that radical photooxidation apparently is most plausible, though 1 O 2 may partly contribute to photodestruction of some tetraazachlorins. In aqueous colloidal solution of nonionic surfactant (Cremophor EL) the same, as in benzene, effect of sensitizer structure upon efficacy of singlet oxygen production was observed. It was shown that 1 O 2 diffusion from micelle core into solution and then to target slows its oxidation rate substantially in comparison to the case where sensitizer and target are localized in the same micelle.

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7

Rybkin, Alexander Yu, Alexandra Yu Belik, Pavel A. Tarakanov, Kamil R. Taziev, Alexei V. Kozlov, Nikolay S. Goryachev, Ilya V. Sulimenkov, et al. "Pyropheophorbide-Fullerene Dyad: Synthesis and Photochemical Properties." Macroheterocycles 12, no. 2 (2019): 181–86. http://dx.doi.org/10.6060/mhc190446r.

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8

Porcal, P., P. J. Dillon, and L. A. Molot. "Seasonal changes in photochemical properties of dissolved organic matter in small boreal streams." Biogeosciences 10, no. 8 (August 16, 2013): 5533–43. http://dx.doi.org/10.5194/bg-10-5533-2013.

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Abstract. The fate of dissolved organic matter (DOM) in lakes and streams is significantly affected by photochemical transformation of DOM. A series of laboratory photochemical experiments was conducted to describe seasonal changes in photochemical properties of DOM. The stream samples used in this study originated from three different catchments in the southernmost part of the Boreal ecozone near Dorset, Ontario, Canada. A first-order kinetics equation was used to model photochemical degradation of DOM and the kinetic rate constant, K, was used as an indicator of photochemical properties of DOM. Kinetic rate constants from all three catchments showed a sinusoidal pattern during the hydrological year. K increased steadily during autumn and winter and decreased during spring and summer with a more than 3-fold range in each stream. The highest values were observed during spring melt events when DOM was flushed from terrestrial sources by high flows. The minimum rate constants were found in summer when discharge was lowest. K was strongly correlated with pH and iron. DOM molecular weight and specific absorbance at 254 nm also exhibited annual cycles corresponding to the seasonal cycles of terrestrial organic matter, but the relationships between these properties and K differed between seasons and may have been affected by previous exposure to solar radiation during transit from the catchment.

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9

Grishin, I. Yu, Yu M. Chunaev, N. M. Przhiylgovskaya, I. I. Levina, and A. V. Metelitsa. "Synthesis and photochemical properties of the indoline series fulgides." Chemistry of Heterocyclic Compounds 28, no. 1 (January 1992): 48–52. http://dx.doi.org/10.1007/bf00529478.

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10

Katakami, Chiaki, Shogo Kamo, Ayame Torii, Nobuyuki Hara, Yoshitane Imai, Tohru Taniguchi, Kenji Monde, et al. "Synthesis and Photochemical Properties of Axially Chiral Bis(dinaphthofuran)." Journal of Organic Chemistry 83, no. 23 (October 30, 2018): 14610–16. http://dx.doi.org/10.1021/acs.joc.8b02424.

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11

Kaczmarek, Halina, Dagmara Oldak, and Andrzej Podgórski. "Photochemical Properties of Polyethylene Modified by Low-Molecular Organic Compounds." Polymer Journal 35, no. 8 (August 2003): 634–39. http://dx.doi.org/10.1295/polymj.35.634.

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12

Naito, Toshio, Akihiro Kakizaki, Makoto Wakeshima, Yukio Hinatsu, and Tamotsu Inabe. "Photochemical modification of magnetic properties in organic low-dimensional conductors." Journal of Solid State Chemistry 182, no. 10 (October 2009): 2733–42. http://dx.doi.org/10.1016/j.jssc.2009.07.032.

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13

Furuta, Toshiaki, Takayoshi Watanabe, Satoshi Tanabe, Jun Sakyo, and Chie Matsuba. "Phototriggers for Nucleobases with Improved Photochemical Properties." Organic Letters 9, no. 23 (November 2007): 4717–20. http://dx.doi.org/10.1021/ol702106t.

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14

Omran, Ziad, and Alexandre Specht. "Synthesis and photochemical properties of photo-cleavable crosslinkers." Tetrahedron Letters 50, no. 20 (May 2009): 2434–36. http://dx.doi.org/10.1016/j.tetlet.2009.03.009.

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15

Yamamura, Takashi, Atsuya Momotake, and Tatsuo Arai. "Synthesis and photochemical properties of porphyrin–azobenzene triad." Tetrahedron Letters 45, no. 50 (December 2004): 9219–23. http://dx.doi.org/10.1016/j.tetlet.2004.10.076.

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16

Chen, Jun, Caijian Zhu, Yong Xu, Pengwei Zhang, and Tongxiang Liang. "Advances in Phthalocyanine Compounds and their Photochemical and Electrochemical Properties." Current Organic Chemistry 22, no. 5 (May 2, 2018): 485–504. http://dx.doi.org/10.2174/1385272821666171002122055.

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17

Barraza, Ramiro, and Matthew Allen. "Lanthanide Luminescence in Visible-Light-Promoted Photochemical Reactions." Molecules 25, no. 17 (August 26, 2020): 3892. http://dx.doi.org/10.3390/molecules25173892.

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The excitation of lanthanides with visible light to promote photochemical reactions has garnered interest in recent years. Lanthanides serve as initiators for photochemical reactions because they exhibit visible-light-promoted 4f→5d transitions that lead to emissive states with electrochemical potentials that are more negative than the corresponding ground states. The lanthanides that have shown the most promising characteristics for visible-light promoted photoredox are SmII, EuII, and CeIII. By understanding the effects that ligands have on the 5d orbitals of SmII, EuII, and CeIII, luminescence and reactivity can be rationally modulated using coordination chemistry. This review briefly overviews the photochemical reactivity of SmII, EuII, and CeIII with visible light; the properties that influence the reactivity of these ions; and the research that has been reported towards modulating their photochemical-relevant properties using visible light and coordination chemistry.

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18

Watanabe, Akira, Hajime Miike, Yasuaki Tsutsumi, and Minoru Matsuda. "Photochemical properties of network and branched polysilanes." Macromolecules 26, no. 8 (April 1993): 2111–16. http://dx.doi.org/10.1021/ma00060a046.

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19

Sworakowski, J., and P. Lutsyk. "Bistable Organic Materials in Optoelectrical Switches: Two-Electrode Devices vs Organic Field Effect Transistors." Ukrainian Journal of Physics 56, no. 10 (February 6, 2022): 1021. http://dx.doi.org/10.15407/ujpe56.10.1021.

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We present a short overview of research into properties of organic materials and structures that could be used in optoelectrical switches, i.e., switches in which changes in electrical properties are triggered by light of appropriate wavelengths. In particular, we describe the structures acting by virtue of reversible photochemical reactions occurring in photochromic molecular materials.

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20

Ziegler-Borowska, Marta, Katarzyna Wegrzynowska-Drzymalska, Dorota Chelminiak-Dudkiewicz, Jolanta Kowalonek, and Halina Kaczmarek. "Photochemical Reactions in Dialdehyde Starch." Molecules 23, no. 12 (December 18, 2018): 3358. http://dx.doi.org/10.3390/molecules23123358.

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In this study potato and corn starch were subjected to oxidation, using sodium periodate, to obtain dialdehyde starch (DAS) containing different amount of aldehyde groups. The obtained modified starch samples have been characterized with chemical analysis, scanning electron microscopy (SEM) and ATR-FTIR spectroscopy. Then, the samples were exposed to polychromatic UV radiation and the course of photochemical reaction has been monitored with ATR-FTIR spectroscopy. The surface properties of the native and dialdehyde starch before and after UV-irradiation have been determined by contact angle measurements and calculation of surface free energy. The crystallinity of the samples has been estimated with X-ray diffraction (XRD). It has been proved that the dialdehyded corn starch contained a higher amount of functional groups was more photostable than the oxidized potato starch. Sodium iodide(V), firmly bound to DAS macromolecules, has been found to have a significant effect on the photooxidative degradation of the tested systems. In addition, the mechanism of photoinduced reactions in the dialdehyde starch has been proposed.

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21

Zahangir Alam, Md, Tomoko Ohmachi, Tomonari Ogata, Takamasa Nonaka, and Seiji Kurihara. "Synthesis, thermal and photochemical properties of liquid crystalline telomers." Polymer 46, no. 7 (March 2005): 2175–82. http://dx.doi.org/10.1016/j.polymer.2005.01.033.

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22

Mass, Olga, Marcin Ptaszek, Masahiko Taniguchi, James R. Diers, Hooi Ling Kee, David F. Bocian, Dewey Holten, and Jonathan S. Lindsey. "Synthesis and Photochemical Properties of 12-Substituted versus 13-Substituted Chlorins." Journal of Organic Chemistry 74, no. 15 (August 7, 2009): 5276–89. http://dx.doi.org/10.1021/jo900706x.

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23

Fisyuk, Alexander S., Evgeny B. Ulyankin, Yulia P. Bogza, Anastasia S. Kostyuchenko, Sergey A. Chernenko, Anna L. Samsonenko, Anton L. Shatsauskas, and Vyacheslav L. Yurpalov. "Photochemical Synthesis of 4H-Thieno[3,2-c]chromene and Their Optical Properties." Synlett 32, no. 08 (February 16, 2021): 790–94. http://dx.doi.org/10.1055/a-1392-2209.

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Abstract4-{[(2-Iodoaryl)oxy]methyl}thiophene-2-carbaldehydes and 5-iodo-4-(aryloxymethyl)thiophene-2-carbaldehydes were obtained by the reaction of phenols with 4-(chloromethyl)thiophene-2-carbaldehyde or its 5-iodo analogue, respectively. These products underwent ring closure upon irradiation with UV light (254 nm) to form the corresponding 4H-thieno[3,2-c]chromene-2-carbaldehydes in high yield. The formation of intermediate radical species was detected by EPR spectroscopy. Comparative analysis of ring-closure methods showed that photochemical cyclization of 5-iodo-4-(aryloxymethyl)thiophene-2-carbaldehyde is superior to Pd-catalyzed intramolecular arylation. A series of substituted 4H-thieno[3,2-c]chromene-2-carbaldehydes were synthesized by the photochemical cyclization of the corresponding precursors, and the photophysical properties of the products were studied. The 4H-thieno[3,2-c]chromene-2-carbaldehydes can be used as covert marking pigments.

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24

Kozlov, Alexei V., Lev R. Sizov, Alexander Yu Rybkin, Olga I. Istakova, Dmitry V. Konev, Ekaterina A. Khakina, Mikhail О. Koifman, and Nikolay S. Goryachev. "Photophysical and Photochemical Properties of the Pyropheophorbide-Perylene-Pyropheophorbide Triad." Macroheterocycles 16, no. 2 (2023): 131–36. http://dx.doi.org/10.6060/mhc235101k.

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25

Theodoropoulou, Maria A., Nikolaos F. Nikitas, and Christoforos G. Kokotos. "Aldehydes as powerful initiators for photochemical transformations." Beilstein Journal of Organic Chemistry 16 (April 23, 2020): 833–57. http://dx.doi.org/10.3762/bjoc.16.76.

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Photochemistry, the use of light to promote organic transformations, has been known for more than a century but only recently has revolutionized the way modern chemists are thinking. Except from transition metal-based complexes, small organic molecules have been introduced as catalysts or initiators. In this review, we summarize the potential that (aromatic or aliphatic) aldehydes have as photoinitiators. The photophysical properties and photoreactivity of benzaldehyde are initially provided, followed by applications of aldehydes as initiators for polymerization reactions. Finally, the applications to date regarding aldehydes as photoinitiators in organic synthesis are presented.

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26

Sauro, Vittorio A., and Mark S. Workentin. "The redox properties of ferrocenyl-substituted aryl azines." Canadian Journal of Chemistry 80, no. 3 (March 1, 2002): 250–62. http://dx.doi.org/10.1139/v02-019.

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A series of ferrocenyl substituted azines (1-Fc/Ar, where Ar = 4-NO2C6H4, 4-CNC6H4, 4-OCH3C6H4, C5H4N, ferrocene, anthracene, and pyrene) were investigated by electrochemical and photochemical techniques. All the 1-Fc/Ar exhibited oxidation waves within 60 mV of each other, consistent with the expected oxidation of the ferrocene moiety. The reduction properties of 1-Fc/Ar is governed by the nature of the Ar substituent. The standard reduction potentials suggest that ferrocene has comparable electron donating abilities as a 4-methoxyphenyl and 4-dimethyl aminophenyl group. The anthracenyl azines exhibit one-electron reversible reduction followed by dimerization of the radical anion resulting in dimerization rate constants (kd) between 5.1 × 104 and 1.5 × 105 M1 s1. 1-Fc/Anth and related azines undergo photochemical E/Z isomerization of the C=N bonds to produce E/Z and Z/Z isomers from the thermodynamically most stable E/E form. Fluorescence at 77 K, was observed for these compounds only after long- wavelength irradiation to produce a mixture of E/E, E/Z, and Z/Z isomers. Fluorescence quantum yields of 0.042, 0.090, and 0.176 were determined for 2-Anth/H, 2-Anth/Anth, and 1-Fc/Anth, respectively. The electrochemical, photochemical, and X-ray data suggest that the azine unit is a conjugation "limiter" and may be a general characteristic of azine molecules.Key words: azines, electrochemistry, cyclic voltammetry, reduction, electron transfer.

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27

KANAZAWA, HITOSHI. "Improvement of surface properties of polypropylene by photochemical treatment." Journal of Photopolymer Science and Technology 8, no. 3 (1995): 377–80. http://dx.doi.org/10.2494/photopolymer.8.377.

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28

Rybczynski, Patryk, Aleksander Smolarkiewicz-Wyczachowski, Jaroslaw Piskorz, Szymon Bocian, Marta Ziegler-Borowska, Dariusz Kędziera, and Anna Kaczmarek-Kędziera. "Photochemical Properties and Stability of BODIPY Dyes." International Journal of Molecular Sciences 22, no. 13 (June 23, 2021): 6735. http://dx.doi.org/10.3390/ijms22136735.

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The present study is devoted to the combined experimental and theoretical description of the photophysical properties and photodegradation of the new boron-dipyrromethene (BODIPY) derivatives obtained recently for biomedical applications, such as bacteria photoinactivation (Piskorz et al., Dyes and Pigments 2020, 178, 108322). Absorption and emission spectra for a wide group of solvents of different properties for the analyzed BODIPY derivatives were investigated in order to verify their suitability for photopharmacological applications. Additionally, the photostability of the analyzed systems were thoroughly determined. The exposition to the UV light was found first to cause the decrease in the most intensive absorption band and the appearance of the hypsochromically shifted band of similar intensity. On the basis of the chromatographic and computational study, this effect was assigned to the detachment of the iodine atoms from the BODIPY core. After longer exposition to UV light, photodegradation occurred, leading to the disappearance of the intensive absorption bands and the emergence of small intensity signals in the strongly blue-shifted range of the spectrum. Since the most intensive bands in original dyes are ascribed to the molecular core bearing the BF2 moiety, this result can be attributed to the significant cleavage of the BF2 ring. In order to fully characterize the obtained molecules, the comprehensive computational chemistry study was performed. The influence of the intermolecular interactions for their absorption in solution was analyzed. The theoretical data entirely support the experimental outcomes.

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29

Saifutiarova, A. E., E. N. Gulakova, O. A. Fedorova, E. Yu Chernikova, A. D. Shapovalov, and Yu V. Fedorov. "Synthesis and Spectral and Photochemical Properties of Newortho-Styryl-Substituted Nitrogen Heterocycles." Russian Journal of Organic Chemistry 56, no. 4 (April 2020): 620–25. http://dx.doi.org/10.1134/s1070428020040090.

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30

Furuta, Toshiaki, Hiromi Torigai, Masazumi Sugimoto, and Michiko Iwamura. "Photochemical Properties of New Photolabile cAMP Derivatives in a Physiological Saline Solution." Journal of Organic Chemistry 60, no. 13 (June 1995): 3953–56. http://dx.doi.org/10.1021/jo00118a008.

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31

Halilovic, Dzeneta, Maja Budanović, Zeng R. Wong, Richard D. Webster, June Huh, and Mihaiela C. Stuparu. "Photochemical Synthesis and Electronic Properties of Extended Corannulenes with Variable Fluorination Pattern." Journal of Organic Chemistry 83, no. 7 (March 8, 2018): 3529–36. http://dx.doi.org/10.1021/acs.joc.7b03146.

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32

Yan, Hong, Hongbo Tan, and Hongxing Xin. "Synthesis and Photochemical Properties of 2,4,6-Triaryl-4H-1,4-oxazines." HETEROCYCLES 89, no. 2 (2014): 359. http://dx.doi.org/10.3987/com-13-12876.

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33

Yanık, Hülya, Meltem Göksel, Serkan Yeşilot, and Mahmut Durmuş. "Novel phthalocyanine–BODIPY conjugates and their photophysical and photochemical properties." Tetrahedron Letters 57, no. 26 (June 2016): 2922–26. http://dx.doi.org/10.1016/j.tetlet.2016.05.080.

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34

Grabchev, Ivo, Vladimir Bojinov, and Jean-Marc Chovelon. "Synthesis, photophysical and photochemical properties of fluorescent poly(amidoamine) dendrimers." Polymer 44, no. 16 (July 2003): 4421–28. http://dx.doi.org/10.1016/s0032-3861(03)00407-5.

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35

Makarov, Dmitry A., Valentina M. Derkacheva, Nina A. Kuznetsova, Oleg L. Kaliya, and Evgeny A. Lukyanets. "Octa-3,6-hexoxyphthalocyanines: Effect of Protonation on Spectral and Photochemical Properties." Macroheterocycles 6, no. 4 (2013): 371–78. http://dx.doi.org/10.6060/mhc130951k.

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36

Santos, L., E. B. H. Santos, J. M. Dias, A. Cunha, and A. Almeida. "Photochemical and microbial alterations of DOM spectroscopic properties in the estuarine system Ria de Aveiro." Photochem. Photobiol. Sci. 13, no. 8 (2014): 1146–59. http://dx.doi.org/10.1039/c4pp00005f.

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Анотація:

The chromophoric dissolved organic matter (CDOM) of marine (MZ) and brackish water (BZ) zones of Ria de Aveiro showed different spectral characteristics and susceptibility to photochemical alterations, reflecting the different amounts and prevailing sources of organic matter.

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37

Lukáč, Ivan, Pavol Hrdlovič, and Wolfram Schnabel. "Preparation and photochemical properties of 4-propenoylbenzil polymers." Macromolecular Chemistry and Physics 195, no. 6 (June 1994): 2233–45. http://dx.doi.org/10.1002/macp.1994.021950629.

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38

Kim, Grigory A., Irina G. Ovchinnikova, Emiliya V. Nosova, Gennady L. Rusinov, and Valery N. Charushin. "(E)-2-(Hydroxystyryl)-3-phenylquinazolin-4(3H)-ones: synthesis, photochemical and luminescent properties." Arkivoc 2018, no. 7 (October 14, 2018): 266–77. http://dx.doi.org/10.24820/ark.5550190.p010.590.

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39

Sharpless, Charles M., and Neil V. Blough. "The importance of charge-transfer interactions in determining chromophoric dissolved organic matter (CDOM) optical and photochemical properties." Environ. Sci.: Processes Impacts 16, no. 4 (2014): 654–71. http://dx.doi.org/10.1039/c3em00573a.

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40

MURAKATA(AITA), TADAHIRO, KAZUKI WATANABE, YUICHI YOSHIDA, and SHIMIO SATO. "Modified Derivatives of Metal Alkoxides' Hydrolysates: Dispersibility into Organic Media and Photochemical Properties." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 34, no. 10 (2001): 1236–43. http://dx.doi.org/10.1252/jcej.34.1236.

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41

Leresche, Frank, Garrett McKay, Tyler Kurtz, Urs von Gunten, Silvio Canonica, and Fernando L. Rosario-Ortiz. "Effects of Ozone on the Photochemical and Photophysical Properties of Dissolved Organic Matter." Environmental Science & Technology 53, no. 10 (April 25, 2019): 5622–32. http://dx.doi.org/10.1021/acs.est.8b06410.

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42

Jing, Xu, Cheng He, Liang Zhao, and Chunying Duan. "Photochemical Properties of Host–Guest Supramolecular Systems with Structurally Confined Metal–Organic Capsules." Accounts of Chemical Research 52, no. 1 (December 26, 2018): 100–109. http://dx.doi.org/10.1021/acs.accounts.8b00463.

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43

Khan, Sher Bahadar, Changzhi Liu, Eui Soung Jang, Kalsoom Akhtar, and Haksoo Han. "Encapsulation of organic UV ray absorbents into layered double hydroxide for photochemical properties." Materials Letters 65, no. 19-20 (October 2011): 2923–26. http://dx.doi.org/10.1016/j.matlet.2011.03.107.

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44

Cao, Jingning, Dachuan Zhang, Yang Zhou, Qijin Zhang, and Si Wu. "Controlling Properties and Functions of Polymer Gels Using Photochemical Reactions." Macromolecular Rapid Communications 43, no. 4 (January 17, 2022): 2100703. http://dx.doi.org/10.1002/marc.202100703.

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45

Oueslati, Ahmed, Hatem Ben Romdhane, Vincent Martin, Fréderic Schiets, Régis Mercier, and Refaât Chaâbouni. "Synthesis and photochemical properties of novel pentamethylated norbornadiene containing polyimides." Journal of Polymer Science Part A: Polymer Chemistry 49, no. 9 (March 7, 2011): 1988–98. http://dx.doi.org/10.1002/pola.24626.

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46

Ye, Chen, De-Shan Zhang, Bin Chen, Chen-Ho Tung, and Li-Zhu Wu. "Quantum dots: Another choice to sensitize organic transformations." Chemical Physics Reviews 4, no. 1 (March 2023): 011304. http://dx.doi.org/10.1063/5.0126893.

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Анотація:

Photochemical reactions are among the most important reactions in both theoretical studies and practical applications, since they utilize photon energy as the primary driving force. The sensitizer species is the key component connecting photons and the chemical materials of the reaction, which is conventionally among organic dyes or metal complex molecules. Semiconductor quantum dots (QDs), widely used in optoelectronic materials, and fluorescence sensing can be also applied to organic transformations due to their inherent physical and chemical properties. The similar functionalities and special photophysical features make QDs an ideal sensitizer and promote the efficient progress of the photochemical reactions. Moreover, the booming of QD photocatalysis reveals the excellent potential of interdisciplinary development between nano-materials science and organic chemistry QDs. Hence, a systematical explanation of the reaction principle of QDs in photocatalytic processes is necessary. In this review, we analyze the structural and optical properties of the QDs and illustrate how QDs participate in and facilitate organic reactions belonging to different pathways. We also present an outlook on the development of QD photocatalysis.

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47

Kuramochi, Kouji, Haruki Kohatsu, Takuya Hosokai, Kenji Ohgane, Shogo Kamo, Shinji Kamisuki, Yutaro Machida, Ryota Kobayashi, and Tsuneomi Kawasaki. "Synthesis, Photochemical Properties, and Cytotoxicity of 10-Alkylphenazin-2(10H)-ones." HETEROCYCLES 102, no. 5 (2021): 871. http://dx.doi.org/10.3987/com-21-14420.

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48

Ichino, Rina, Atsuya Momotake, and Tatsuo Arai. "Photochemical properties of enediyne-cored dendrimers bearing naphthalenes at the periphery." Canadian Journal of Chemistry 97, no. 2 (February 2019): 112–19. http://dx.doi.org/10.1139/cjc-2018-0128.

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Анотація:

A novel series of trans and cis enediyne-cored dendrimers bearing naphthalenes at the periphery were synthesized and their photochemical properties were examined. The trans/cis isomer ratio in the photostationary state was dependent on the excitation site in the dendrimers. When the enediyne core was selectively excited, the trans/cis isomer ratio in the photostationary state was either around 50/50 or a cis-rich mixture in all dendrimers due to the larger molar extinction coefficient of the trans-enediynes. On the other hand, when naphthalene was excited, a trans-rich mixture was unexpectedly obtained in higher generation dendrimers even though the energy transfer efficiency was almost quantitative in the trans dendrimers. These results could be explained by the energy transfer process, which was different depending on the geometric isomerism of the enediyne core.

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49

Gauthier, Sébastien, Nikolay Vologdin, Sylvain Achelle, Alberto Barsella, Bertrand Caro, and Françoise Robin-le Guen. "Methylenepyran based dipolar and quadrupolar dyes: synthesis, electrochemical and photochemical properties." Tetrahedron 69, no. 39 (September 2013): 8392–99. http://dx.doi.org/10.1016/j.tet.2013.07.066.

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50

Lin, Chi-Hui, Rong-Ren Chuang, Pei-Yu Kuo, and Ding-Yah Yang. "Conformation and photochemical properties of 3-benzoyl-4-benzylamino-7-dimethylaminocoumarin." Tetrahedron Letters 54, no. 19 (May 2013): 2431–34. http://dx.doi.org/10.1016/j.tetlet.2013.03.016.

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