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Journal articles on the topic 'Dynamics in AZO'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Xiao, Han, Yi Li, Baoying Fang, Xiaohua Wang, Zhimin Liu, Jiao Zhang, Zhengpeng Li, Yaqin Huang, and Jiangheng Pei. "Voltage-induced switching dynamics based on an AZO/VO 2 /AZO sandwiched structure." Infrared Physics & Technology 86 (November 2017): 212–17. http://dx.doi.org/10.1016/j.infrared.2017.09.010.

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2

Hsu, Chun-Chih, Yu-Ting Wang, Atsushi Yabushita, Chih-Wei Luo, Yi-Nan Hsiao, Shiuan-Huei Lin, and Takayoshi Kobayashi. "Environment-Dependent Ultrafast Photoisomerization Dynamics in Azo Dye." Journal of Physical Chemistry A 115, no. 42 (October 27, 2011): 11508–14. http://dx.doi.org/10.1021/jp2051307.

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3

Tomczak, Elwira, Wladyslaw Kaminski, and Paweł Tosik. "Adsorption dynamics studies of azo dyes removal by biosorbent." Desalination and Water Treatment 55, no. 10 (July 18, 2014): 2669–74. http://dx.doi.org/10.1080/19443994.2014.939490.

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4

Huang, Chia-Yi, Yi-Ru Lin, Kuang-Yao Lo, and Chia-Rong Lee. "Dynamics of photoalignment in azo-dye-doped liquid crystals." Applied Physics Letters 93, no. 18 (November 3, 2008): 181114. http://dx.doi.org/10.1063/1.3021379.

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5

Pawlik, Grzegorz, and Antoni C. Mitus. "Photoinduced Mass Transport in Azo-Polymers in 2D: Monte Carlo Study of Polarization Effects." Materials 13, no. 21 (October 22, 2020): 4724. http://dx.doi.org/10.3390/ma13214724.

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We studied the impact of light polarization on photoinduced dynamics of model azo-polymer chains in two dimensions, using bond-fluctuation Monte Carlo simulations. For two limiting models—sensitive to and independent of light polarization—their dynamics driven by photoisomerization of azo-dyes as well as by thermal effects was studied, including characterization of mass transport and chain reorientations. The corresponding schemes of light–matter interaction promote qualitatively different dynamics of photoinduced motion of azo-polymer chains. In particular, they can inhibit or trigger off a directed mass transport along a gradient of light illumination. The generic dynamics of single chains is superdiffusive and is promoted by breaking a symmetry present in the polarization independent model.

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6

Saura-Sanmartin, Adrian, Juan Martinez-Espin, Alberto Martinez-Cuezva, Mateo Alajarin, and Jose Berna. "Effects on Rotational Dynamics of Azo and Hydrazodicarboxamide-Based Rotaxanes." Molecules 22, no. 7 (June 28, 2017): 1078. http://dx.doi.org/10.3390/molecules22071078.

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7

Herman, W. N., and J. A. Cline. "Chielectric relaxation: chromophore dynamics in an azo-dye-doped polymer." Journal of the Optical Society of America B 15, no. 1 (January 1, 1998): 351. http://dx.doi.org/10.1364/josab.15.000351.

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8

Mikulich, Vadim S., Alexander A. Muravsky, Anatoli A. Murauski, Iryna N. Kukhta, Vladimir E. Agabekov, and Rashid Altamimi. "Photoalignment dynamics of azo dyes series with different coordination metals." Journal of the Society for Information Display 22, no. 1 (January 2014): 29–34. http://dx.doi.org/10.1002/jsid.217.

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9

Stoica, Iuliana, Elena-Luiza Epure, Andreea Irina Barzic, Ilarion Mihaila, Catalin-Paul Constantin, and Ion Sava. "The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics." International Journal of Molecular Sciences 23, no. 23 (December 3, 2022): 15223. http://dx.doi.org/10.3390/ijms232315223.

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High-performance supramolecular polyimide systems were synthesized via a simple and innovative approach using two types of azo-chromophores, leading to concomitant special properties: high thermostability, the ability to be processed in the form of films with high flexibility, adequate morphological features, and good structuring capacity via phase mask ultraviolet (UV) laser irradiation, induced by the presence of the azo groups (–N=N–). The dimension and the anisotropy degree of the micro/nano patterns obtained on the surface of the flexible films (determined by atomic force microscopy) depend on the azo-dye type used in the supramolecular azopolyimide synthesis, which were higher when the azo-chromophore containing a –cyano group (–C≡N) was used. The molecular dynamics method, an excellent tool for an in-depth examination of the intermolecular interactions, was used to explain the morphological aspects. Energetic, dynamic and structural parameters were calculated for the two systems containing azo-chromophores, as well as for the pristine polymer system. It was highlighted that the van der Waals forces make a major contribution to the intermolecular interactions. The results from the combination of the dynamic analysis and the concentration profile explain the better mobility of the polyimide chains with a maximum content of azo groups in the cis configuration compared to the other systems. Taking all these data into account, the surfaces of the films can be tuned as required for the proposed applications, namely as substrates for flexible electronis.

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10

El Osman, Ahmad, and Michel Dumont. "Dynamics of photoinduced orientational order of azo-dyes in polymer films." Macromolecular Symposia 137, no. 1 (January 1999): 137–46. http://dx.doi.org/10.1002/masy.19991370114.

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11

Sato, Yoshikazu, Jun Kato, and Takashi Yamashita. "Dynamics of Photo-Optical Effect of Azo Dyes Measured with Michelson Interferometer." Journal of Photopolymer Science and Technology 17, no. 2 (2004): 291–96. http://dx.doi.org/10.2494/photopolymer.17.291.

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12

Simonov, A. N., and A. V. Larichev. "Dynamics of photoinduced processes in liquid-crystal polymer films containing azo compounds." Quantum Electronics 29, no. 7 (July 31, 1999): 644–48. http://dx.doi.org/10.1070/qe1999v029n07abeh001545.

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13

Tomczak, Elwira, and Martyna Blus. "Sorption dynamics of Direct Orange 26 dye onto a corncob plant sorbent." Ecological Chemistry and Engineering S 23, no. 1 (March 1, 2016): 175–85. http://dx.doi.org/10.1515/eces-2016-0012.

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Abstract The azo dye and plant-derived sorbent system was investigated in this paper. Direct Orange 26 azo dye was acquired from Boruta-Zachem Kolor Sp. z o.o. Chemically modified granulated corncobs obtained from Chipsi Mais Germany were used as the biosorbent. The changes in the dye and sorbent concentrations with time were measured and used for further calculations. The experiments were carried out in a laboratory fixed bed column. Breakthrough curves were plotted for different initial concentrations, volumetric flow rates and bed heights. Sorption dynamics was described by a model presented in the literature. It was demonstrated that Infrared analysis of the system allows to determine the nature of the dye-sorbent bond. It was found that corncobs can be used as a promising sorbent material.

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14

Shokry, H., R. Shah, and E. M. Mabrouk. "Corrosion Monitoring of Sabic Iron in Hydrochloric Acid Solutions using some Azo Compounds – Molecular Dynamics, Chemical and Electrochemical Studies." JOURNAL OF ADVANCES IN CHEMISTRY 5, no. 2 (September 17, 2009): 702–18. http://dx.doi.org/10.24297/jac.v5i2.2660.

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The corrosion inhibition behaviour of Sabic iron in the absence and in presence of some azo compounds derived from 2, 3-and 2, 7-dihydroxynaphthalene was investigated using weight loss, thermometry and galvanostatic polarizations techniques. It was found that, the inhibition efficiency of these compounds depends on their concentration and chemical structure. The inhibitive action of these azo compounds was discussed in terms of blocking the electrode surface by adsorption of the azo dye molecules through the active centres in their structure. The adsorption process follows Temkin isotherm. The effect of temperature on the rate of corrosion was considered and some activated thermodynamic functions were computed and discussed. Quantum chemical calculations and molecular simulations were further applied to reveal the adsorption structure and explain the experimental results.

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15

Suzuki, Miyoko, Jozsef Szejtli, and Lajos Szente. "Molecular dynamics of derivatives of cyclomalto-oligosaccharides and their complexes with azo dyes." Carbohydrate Research 192 (October 1989): 61–68. http://dx.doi.org/10.1016/0008-6215(89)85165-1.

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16

Ono, Hiroshi, Nozomu Kowatari, and Nobuhiro Kawatsuki. "Study on dynamics of laser-induced birefringence in azo dye doped polymer films." Optical Materials 15, no. 1 (September 2000): 33–39. http://dx.doi.org/10.1016/s0925-3467(00)00016-1.

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17

Fiorini, C., J. M. Nunzi, P. Raimond, C. Branger, M. Lequan, and R. M. Lequan. "Symmetry of the all-optical orientation dynamics of an octupolar azo-dye salt." Synthetic Metals 115, no. 1-3 (November 2000): 127–31. http://dx.doi.org/10.1016/s0379-6779(00)00333-7.

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18

Tan, Liang, Yuanyuan Qu, Jiti Zhou, Zhiyong Song, Ang Li, Huiwen Zhang, and Zhencheng Su. "Microbial community dynamics in SBR for azo dyes treatment by PCR–DGGE technique." Journal of Biotechnology 136 (October 2008): S609. http://dx.doi.org/10.1016/j.jbiotec.2008.07.1410.

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19

Mathur, Anshu, Swati Dubey, Ramasre Prasad, and Rajesh Pratap Singh. "Mycelial and secretome proteomic dynamics of L. squarrosulus AF5 in azo dye degradation." Journal of Environmental Chemical Engineering 11, no. 2 (April 2023): 109374. http://dx.doi.org/10.1016/j.jece.2023.109374.

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20

Montezol, Michel, Mônica Cassel, Débora Silva, Adelina Ferreira, and Mahmoud Mehanna. "Gametogenesis and reproductive dynamics ofRhinella schneideri(Anura: Bufonidae): Influence of environmental and anthropogenic factors." Acta Zoologica 99, no. 1 (May 5, 2017): 93–104. http://dx.doi.org/10.1111/azo.12195.

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21

Mitus, Antoni C., Marina Saphiannikova, Wojciech Radosz, Vladimir Toshchevikov, and Grzegorz Pawlik. "Modeling of Nonlinear Optical Phenomena in Host-Guest Systems Using Bond Fluctuation Monte Carlo Model: A Review." Materials 14, no. 6 (March 16, 2021): 1454. http://dx.doi.org/10.3390/ma14061454.

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We review the results of Monte Carlo studies of chosen nonlinear optical effects in host-guest systems, using methods based on the bond-fluctuation model (BFM) for a polymer matrix. In particular, we simulate the inscription of various types of diffraction gratings in degenerate two wave mixing (DTWM) experiments (surface relief gratings (SRG), gratings in polymers doped with azo-dye molecules and gratings in biopolymers), poling effects (electric field poling of dipolar molecules and all-optical poling) and photomechanical effect. All these processes are characterized in terms of parameters measured in experiments, such as diffraction efficiency, nonlinear susceptibilities, density profiles or loading parameters. Local free volume in the BFM matrix, characterized by probabilistic distributions and correlation functions, displays a complex mosaic-like structure of scale-free clusters, which are thought to be responsible for heterogeneous dynamics of nonlinear optical processes. The photoinduced dynamics of single azopolymer chains, studied in two and three dimensions, displays complex sub-diffusive, diffusive and super-diffusive dynamical regimes. A directly related mathematical model of SRG inscription, based on the continuous time random walk (CTRW) formalism, is formulated and studied. Theoretical part of the review is devoted to the justification of the a priori assumptions made in the BFM modeling of photoinduced motion of the azo-polymer chains.

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22

Zhu, Chao, Zarak Mahmood, Muhammad Saboor Siddique, Heyou Wang, He Anqi, and Mika Sillanpää. "Structure-Based Long-Term Biodegradation of the Azo Dye: Insights from the Bacterial Community Succession and Efficiency Comparison." Water 13, no. 21 (October 27, 2021): 3017. http://dx.doi.org/10.3390/w13213017.

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In this study, microbial community dynamics were explored during biological degradation of azo dyes with different chemical structures. The effect of the different molecular structures of the azo dyes was also assessed against the simultaneous removal of color and the bacterial community. Winogradsky columns were inoculated with dewatered sludge and separately fed with six different azo dyes to conduct the sludge acclimatization process, and nine bacterial decolorizing strains were isolated and identified. The decolorization and biodegradation performances of the acclimated system and isolated strains were also determined. Results showed that the bacterial isolates involved in decolorization and the degradation of the azo dyes were mainly associated with the azo dye structure. After 24 h acclimatization at room temperature without specific illumination, immediate decolorization of methyl red (89%) and methyl orange (78%) was observed, due to their simple structure compared to tartrazine (73%). However, after 8 days of acclimatization, methyl red was easily decolorized up to 99%, and about 87% decolorization was observed for orange G (87%), due to its complex chemical structure. Higher degrees of degradation and decolorization were achieved with Pseudomonas geniculate strain Ka38 (Proteobacteria), Bacillus cereus strain 1FFF (Firmicutes) and Klebsiella variicola strain RVEV3 (Proteobacteria) with continuous shaking at 30 °C. The azo dyes with benzene rings were found to be easier to decolorize and degrade with similar microbial communities. Moreover, it seems that the chemical structures of the azo dyes, in a sense, drove the divergent succession of the bacterial community while reducing the diversity. This study gives a deep insight into the feasible structure-based artificial manipulation of bacterial communities and offers theoretical guidance for decolorizing azo dyes with mixed bacteria cultures.

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23

Silva, S. Q., D. C. Silva, M. C. S. Lanna, B. E. L. Baeta, and S. F. Aquino. "Microbial dynamics during azo dye degradation in a UASB reactor supplied with yeast extract." Brazilian Journal of Microbiology 45, no. 4 (December 2014): 1153–60. http://dx.doi.org/10.1590/s1517-83822014000400005.

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24

Haghshenas, Hamed, Maryam Kay, Fariba Dehghanian, and Hossein Tavakol. "Molecular dynamics study of biodegradation of azo dyes via their interactions with AzrC azoreductase." Journal of Biomolecular Structure and Dynamics 34, no. 3 (September 2015): 453–62. http://dx.doi.org/10.1080/07391102.2015.1039585.

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25

Madkour, Loutfy H., Savaş Kaya, Cemal Kaya, and Lei Guo. "Quantum chemical calculations, molecular dynamics simulation and experimental studies of using some azo dyes as corrosion inhibitors for iron. Part 1: Mono-azo dye derivatives." Journal of the Taiwan Institute of Chemical Engineers 68 (November 2016): 461–80. http://dx.doi.org/10.1016/j.jtice.2016.09.015.

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26

Statman, David, and James C. Lombardi. "Modeling the Dynamics of Photo-induced Reorientation of Nematic Liquid Crystals doped with Azo-dye." Molecular Crystals and Liquid Crystals 494, no. 1 (December 2, 2008): 1–10. http://dx.doi.org/10.1080/15421400802429911.

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27

Peng, Wei, Fei Ding, Yu-Ting Jiang, Ying Sun, and Yu-Kui Peng. "Evaluation of the biointeraction of colorant flavazin with human serum albumin: insights from multiple spectroscopic studies, in silico docking and molecular dynamics simulation." Food Funct. 5, no. 6 (2014): 1203–17. http://dx.doi.org/10.1039/c3fo60712g.

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28

Tan, Liang, Shuxiang Ning, Ying Wang, and Xiangyu Cao. "Influence of dye type and salinity on aerobic decolorization of azo dyes by microbial consortium and the community dynamics." Water Science and Technology 65, no. 8 (April 1, 2012): 1375–82. http://dx.doi.org/10.2166/wst.2012.016.

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In this research, aerobic decolorization of different azo dyes by a microbial community was studied. The results showed that more than 80% of four azo dyes (100 mg/L) could be aerobically decolorized by the microbial consortium, however, the time needed was obviously different. Kinetic data indicated that the processes were well described by zero-order kinetics, and the chemical structures of dyes had obvious influence on decolorization rates. On the other hand, effects of salinity on decolorization were also investigated. There was still 40% dye removal for Acid Brilliant Red GR when the salinity increased to 250 g/L. And the microbial community structures with different salinity were detected by PCR-DGGE. It was shown that the same two bacteria were dominant in all decolorization systems, and some typical halophilic microorganisms were found under higher-salt conditions.

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29

Koch, Markus, Marina Saphiannikova, and Olga Guskova. "Columnar Aggregates of Azobenzene Stars: Exploring Intermolecular Interactions, Structure, and Stability in Atomistic Simulations." Molecules 26, no. 24 (December 15, 2021): 7598. http://dx.doi.org/10.3390/molecules26247598.

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We present a simulation study of supramolecular aggregates formed by three-arm azobenzene (Azo) stars with a benzene-1,3,5-tricarboxamide (BTA) core in water. Previous experimental works by other research groups demonstrate that such Azo stars assemble into needle-like structures with light-responsive properties. Disregarding the response to light, we intend to characterize the equilibrium state of this system on the molecular scale. In particular, we aim to develop a thorough understanding of the binding mechanism between the molecules and analyze the structural properties of columnar stacks of Azo stars. Our study employs fully atomistic molecular dynamics (MD) simulations to model pre-assembled aggregates with various sizes and arrangements in water. In our detailed approach, we decompose the binding energies of the aggregates into the contributions due to the different types of non-covalent interactions and the contributions of the functional groups in the Azo stars. Initially, we investigate the origin and strength of the non-covalent interactions within a stacked dimer. Based on these findings, three arrangements of longer columnar stacks are prepared and equilibrated. We confirm that the binding energies of the stacks are mainly composed of π–π interactions between the conjugated parts of the molecules and hydrogen bonds formed between the stacked BTA cores. Our study quantifies the strength of these interactions and shows that the π–π interactions, especially between the Azo moieties, dominate the binding energies. We clarify that hydrogen bonds, which are predominant in BTA stacks, have only secondary energetic contributions in stacks of Azo stars but remain necessary stabilizers. Both types of interactions, π–π stacking and H-bonds, are required to maintain the columnar arrangement of the aggregates.

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30

Tomczak, Elwira, and Paweł Tosik. "Waste Plant Material as a Potential Adsorbent of a Selected Azo Dye." Chemical and Process Engineering 38, no. 2 (June 27, 2017): 283–94. http://dx.doi.org/10.1515/cpe-2017-0021.

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Abstract This paper discusses the adsorption of Direct Orange 26 azo dye on sunflower husk - an agricultural waste product. During the study, sorption kinetics and equilibrium as well as sorption capacity of the husk were investigated. The adsorption kinetics was analyzed using pseudo-first and pseudo-second order equations, which indicated a chemical sorption mechanism. The sorption equilibrium was approximated with the two-parameter Freundlich and Langmuir equations and the three-parameter Redlich-Peterson equation. The main experiments were carried out in a laboratory adsorption column under different process conditions. Experimental data were interpreted with the Thomas model, based on the volumetric flow rate, initial composition of the feed solution and mass of the adsorbent. The results of modeling the adsorption equilibrium, adsorption kinetics and adsorption dynamics were evaluated statistically.

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31

Koch, Markus, Marina Saphiannikova, and Olga Guskova. "Cyclic Photoisomerization of Azobenzene in Atomistic Simulations: Modeling the Effect of Light on Columnar Aggregates of Azo Stars." Molecules 26, no. 24 (December 18, 2021): 7674. http://dx.doi.org/10.3390/molecules26247674.

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This computational study investigates the influence of light on supramolecular aggregates of three-arm azobenzene stars. Every star contains three azobenzene (azo) moieties, each able to undergo reversible photoisomerization. In solution, the azo stars build column-shaped supramolecular aggregates. Previous experimental works report severe morphological changes of these aggregates under UV–Vis light. However, the underlying molecular mechanisms are still debated. Here we aim to elucidate how light affects the structure and stability of the columnar stacks on the molecular scale. The system is investigated using fully atomistic molecular dynamics (MD) simulations. To implement the effects of light, we first developed a stochastic model of the cyclic photoisomerization of azobenzene. This model reproduces the collective photoisomerization kinetics of the azo stars in good agreement with theory and previous experiments. We then apply light of various intensities and wavelengths on an equilibrated columnar stack of azo stars in water. The simulations indicate that the aggregate does not break into separate fragments upon light irradiation. Instead, the stack develops defects in the form of molecular shifts and reorientations and, as a result, it eventually loses its columnar shape. The mechanism and driving forces behind this order–disorder structural transition are clarified based on the simulations. In the end, we provide a new interpretation of the experimentally observed morphological changes.

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32

Morgan, C. G., S. S. Sandhu, Y. P. Yianni, and N. J. F. Dodd. "The phase behaviour of dispersions of Bis-Azo PC: photoregulation of bilayer dynamics via lipid photochromism." Biochimica et Biophysica Acta (BBA) - Biomembranes 903, no. 3 (October 1987): 495–503. http://dx.doi.org/10.1016/0005-2736(87)90056-3.

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33

Tan, Liang, Yuanyuan Qu, Jiti Zhou, Fang Ma, and Ang Li. "Microbial community shifts in sequencing batch reactors for azo dye treatment." Pure and Applied Chemistry 82, no. 1 (January 16, 2010): 299–306. http://dx.doi.org/10.1351/pac-con-09-01-10.

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Microbial community structures in sequencing batch reactors (SBRs) for azo dye wastewater treatment were analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). Effects of dye concentration and salinity were investigated for the decolorization of both reactive brilliant red K-2G and KE-3B. The results showed that the microbial community exhibited high color removal efficiency with high concentration of K-2G (1100 mg/l) and moderate KE-3B (400 mg/l), respectively. Under high-salt conditions, decolorization of KE-3B was partially inhibited, while little effect was observed on decolorization of K-2G. The results of similarity analysis demonstrated that the DGGE banding patterns of microbial communities in K-2G and KE-3B decolorization systems were clustered into two independent groups. And it was suggested that the microbial diversities shifted proportionally with the decolorization rates for both dyes. The similarity index (Cs) of the bacterial communities under higher-salt conditions was more than those cultured with lower salinity. It was also found that microbial diversities turned out to be more abundant for both dyes with the increase of NaCl concentration. These results suggested that not only the stability but also the adequate dynamics and diversity of the microbial community structure are important for the stable performance of the SBRs treating hyper-salinity azo dye wastewater.

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34

Htwe, Zin Maung, Yun-Dong Zhang, Cheng-Bao Yao, Hui Li, and Ping Yuan. "Ultrafast carrier dynamics and third order nonlinear optical properties of aluminum doped zinc oxide (AZO) thin films." Optical Materials 66 (April 2017): 580–88. http://dx.doi.org/10.1016/j.optmat.2017.03.009.

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35

Pawlik, Grzegorz, Tomasz Wysoczanski, and Antoni Mitus. "Complex Dynamics of Photoinduced Mass Transport and Surface Relief Gratings Formation." Nanomaterials 9, no. 3 (March 4, 2019): 352. http://dx.doi.org/10.3390/nano9030352.

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The microscopic and semi-macroscopic mechanisms responsible for photoinduced mass transport in functionalized azo-polymers are far from deeply understood. To get some insight into those mechanisms on “microscopic” scale, we studied the directed photoinduced motion of single functionalized polymer chains under various types of polarized light illumination using Monte Carlo bond fluctuation model and our kinetic Monte Carlo model for photoinduced mass transport. We found sub-diffusive, diffusive and super-diffusive regimes of the dynamics of single chains at constant illumination and mostly super-diffusive regime for directed motion in the presence of the gradient of light intensity. This regime is more enhanced for long than for short chains and it approaches the ballistic limit for very long chains. We propose a physical picture of light-driven inscription of Surface Relief Gratings (SRG) as corresponding to a dynamical coexistence of normal and anomalous diffusion in various parts of the system. A simple continuous time random walk model of SRG inscription based on this physical picture reproduced the light-driven mass transport found in experiments as well as the fine structure of SRG.

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36

Yu, Yajun, Yuchen Tang, Kaiqin Chu, Tingjuan Gao, and Zachary J. Smith. "High-Resolution Low-Power Hyperspectral Line-Scan Imaging of Fast Cellular Dynamics Using Azo-Enhanced Raman Scattering Probes." Journal of the American Chemical Society 144, no. 33 (August 15, 2022): 15314–23. http://dx.doi.org/10.1021/jacs.2c06275.

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37

Habibian Dehkordi, Saied, Sadegh Farhadian, and Mohammad Ghasemi. "The interaction between the azo dye tartrazine and α-Chymotrypsin enzyme: Molecular dynamics simulation and multi-spectroscopic investigations." Journal of Molecular Liquids 344 (December 2021): 117931. http://dx.doi.org/10.1016/j.molliq.2021.117931.

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38

Shokry, H. "Molecular dynamics simulation and quantum chemical calculations for the adsorption of some Azo-azomethine derivatives on mild steel." Journal of Molecular Structure 1060 (February 2014): 80–87. http://dx.doi.org/10.1016/j.molstruc.2013.12.030.

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39

Sekkat, Zouheir. "Photomechanical Solid Polymers: Model for Pressure and Strain Induced by Photoisomerization and Photo-Orientation." Applied Sciences 13, no. 1 (December 27, 2022): 321. http://dx.doi.org/10.3390/app13010321.

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Photoactive polymers are important for fundamental studies and applications in several area of photonics such as data storage and holography and nonlinear optics and photomechanics. The latter is perhaps one of the most important applications of such materials, since they act as light to mechanical energy transducers and move under light action. For example, azo-polymers irradiated by inhomogeneous resonant ultra-violet or visible light undergo molecular and macroscopic motion, at sub-glass transition temperatures by photoisomerization of the azo dyes. Our recent research in this field highlighted the fundamentals of mobility enhancement by light, including light-induced viscosity change and acceleration of relaxation times, and photomechanics, encompassing motions in gradients of actinic light leading to surface structuring and actuation. In this paper, we present an original model which predicts the creation of mechanical pressure, i.e., motion, by a photo-induced change in the occupied volume and length of anisometric isomers, and we give simple analytical expressions describing the dynamics of volume as well as strain change upon polarized light irradiation of photomechanic samples.

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40

Tada, Takuji, Tsuyoshi Asahi, Masaaki Tsuchimori, Osamu Watanabe, and Hiroshi Masuhara. "Nanometer Photothermal Heating and Cooling Dynamics of Azo Polymer Film Elucidated by Analyzing Nanosecond Laser-Induced Expansion/Contraction Behavior." Japanese Journal of Applied Physics 43, no. 8A (August 10, 2004): 5337–46. http://dx.doi.org/10.1143/jjap.43.5337.

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41

Zhang, Chongmin, Xiaolong Fu, Jizhen Li, Xuezhong Fan, and Guofang Zhang. "Desensitizing Effect of Graphene Oxide on Thermolysis Mechanisms of 4,4′-Azo-1,2,4-triazole Studied by Reactive Molecular Dynamics Simulations." Journal of Physical Chemistry A 123, no. 7 (January 28, 2019): 1285–94. http://dx.doi.org/10.1021/acs.jpca.8b10087.

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42

Mazzanti, Michele, Martina Milani, Vito Cristino, Rita Boaretto, Alessandra Molinari, and Stefano Caramori. "Visible Light Reductive Photocatalysis of Azo-Dyes with n–n Junctions Based on Chemically Deposited CdS." Molecules 27, no. 9 (May 4, 2022): 2924. http://dx.doi.org/10.3390/molecules27092924.

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New composite photocatalysts have been obtained by chemical bath deposition of CdS on top of either nanostructured crystalline ZrO2 or TiO2 films previously deposited on conductive glass FTO. Their morphological, photoelectrochemical and photochemical properties have been investigated and compared. Time resolved spectroscopic, techniques show that in FTO/TiO2/CdS films the radiative recombination of charges, separated by visible illumination of CdS, is faster than in FTO/ZrO2/CdS, evidencing that carrier dynamics in the two systems is different. Photoelectrochemical investigation evidence a suppression of electron collection in ZrO2/CdS network, whereas electron injection from CdS to TiO2 is very efficient since trap states of TiO2 act as a reservoir for long lived electrons storage. This ability of FTO/TiO2/CdS films is used in the reductive cleavage of N=N bonds of some azo-dyes by visible light irradiation, with formation and accumulation of reduced aminic intermediates, identified by ESI-MS analysis. Needed protons are provided by sodium formate, a good hole scavenger that leaves no residue upon oxidation. FTO/TiO2/CdS has an approximately 100 meV driving force larger than FTO/ZrO2/CdS under illumination for azo-dye reduction and it is always about 10% more active than the seconds. The films showed very high stability and recyclability, ease of handling and recovering.

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Fernandez, Dorancelly, Andrés Restrepo-Acevedo, Cristian Rocha-Roa, Ronan Le Lagadec, Rodrigo Abonia, Susana A. Zacchino, Jovanny A. Gómez Castaño, and Fernando Cuenú-Cabezas. "Synthesis, Structural Characterization, and In Vitro and In Silico Antifungal Evaluation of Azo-Azomethine Pyrazoles (PhN2(PhOH)CHN(C3N2(CH3)3)PhR, R = H or NO2)." Molecules 26, no. 24 (December 8, 2021): 7435. http://dx.doi.org/10.3390/molecules26247435.

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The azo-azomethine imines, R1-N=N-R2-CH=N-R3, are a class of active pharmacological ligands that have been prominent antifungal, antibacterial, and antitumor agents. In this study, four new azo-azomethines, R1 = Ph, R2 = phenol, and R3 = pyrazol-Ph-R’ (R = H or NO2), have been synthesized, structurally characterized using X-ray, IR, NMR and UV–Vis techniques, and their antifungal activity evaluated against certified strains of Candida albicans and Cryptococcus neoformans. The antifungal tests revealed a high to moderate inhibitory activity towards both strains, which is regulated as a function of both the presence and the location of the nitro group in the aromatic ring of the series. These biological assays were further complemented with molecular docking studies against three different molecular targets from each fungus strain. Molecular dynamics simulations and binding free energy calculations were performed on the two best molecular docking results for each fungus strain. Better affinity for active sites for nitro compounds at the “meta” and “para” positions was found, making them promising building blocks for the development of new Schiff bases with high antifungal activity.

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Pasechnik, S. V., A. V. Dubtsov, D. V. Shmeliova, D. A. Semerenko, V. G. Chigrinov, M. A. Sinenko, and Alexei D. Kiselev. "Modeling Reorientation Dynamics of Electrically Assisted Light-Induced Gliding of Nematic Liquid-Crystal Easy Axis." Advances in Condensed Matter Physics 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/363157.

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The phenomenological torque balance model previously introduced to describe the electrically assisted light-induced gliding is generalized to study the reorientation dynamics of the nematic liquid crystal easy axis at photoaligned azo-dye films under the combined action of in-plane electric field and reorienting UV light linearly polarized at varying polarization azimuth,φp. We systematically examine the general properties of the torque balance model by performing analysising the bifurcations of equilibria at different values of the polarization azimuth and apply for the model to interpret the experimental results. These involve observation of the pronounced purely photoinduced reorientation atφp≠0, as opposed to the case where the light polarization vector is parallel to the initial easy axis (φp=0), and the reorientation is almost entirely suppressed. In the regions between electrodes with nonzero electric field, the effects described by the model are that (a) the dynamics of reorientation slows down withφpand (b) the sense of easy axis rotation is independent of the sign ofφp.

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Moon, Junghwan, Byungjo Kim, Joonmyung Choi, and Maenghyo Cho. "Multiscale Study of the Relationship between Photoisomerization and Mechanical Behavior of Azo-Polymer Based on the Coarse-Grained Molecular Dynamics Simulation." Macromolecules 52, no. 5 (March 2019): 2033–49. http://dx.doi.org/10.1021/acs.macromol.8b02535.

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Santhanarajan, Aalfin Emmanuel, Woo-Jun Sul, Keun-Je Yoo, Hoon-Je Seong, Hong-Gi Kim, and Sung-Cheol Koh. "Metagenomic Insight of a Full Scale Eco-Friendly Treatment System of Textile Dye Wastewater Using Bioaugmentation of the Composite Culture CES-1." Microorganisms 9, no. 7 (July 14, 2021): 1503. http://dx.doi.org/10.3390/microorganisms9071503.

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Effects of bioaugmentation of the composite microbial culture CES-1 on a full scale textile dye wastewater treatment process were investigated in terms of water quality, sludge reduction, dynamics of microbial community structures and their functional genes responsible for degradation of azo dye, and other chemicals. The removal efficiencies for Chemical Oxygen Demand (COD), Total Nitrogen (T-N), Total Phosphorus (T-P), Suspended Solids (SS), and color intensity (96.4%, 78.4, 83.1, 84.4, and 92.0, respectively) 300–531 days after the augmentation were generally improved after bioaugmentation. The denitrification linked to T-N removal appeared to contribute to the concomitant COD removal that triggered a reduction of sludge (up to 22%) in the same period of augmentation. Azo dye and aromatic compound degradation and other downstream pathways were highly metabolically interrelated. Augmentation of CES-1 increased microbial diversity in the later stages of augmentation when a strong microbial community selection of Acinetobacterparvus, Acinetobacterjohnsonii, Marinobacter manganoxydans, Verminephrobacter sp., and Arcobacter sp. occurred. Herein, there might be a possibility that the CES-1 augmentation could facilitate the indigenous microbial community successions so that the selected communities made the augmentation successful. The metagenomic analysis turned out to be a reasonable and powerful tool to provide with new insights and useful biomarkers for the complex environmental conditions, such as the full scale dye wastewater treatment system undergoing bioaugmentation.

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Benkhaya, Said, Hassane Lgaz, Selma Chraibi, Awad A. Alrashdi, Mohamed Rafik, Han-Seung Lee, and Ahmed El Harfi. "Polysulfone/Polyetherimide Ultrafiltration composite membranes constructed on a three-component Nylon-fiberglass-Nylon support for azo dyes removal: Experimental and molecular dynamics simulations." Colloids and Surfaces A: Physicochemical and Engineering Aspects 625 (September 2021): 126941. http://dx.doi.org/10.1016/j.colsurfa.2021.126941.

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Liu, Jing, Li Song, Tingting Jiang, Xuan Jia, and Liang Tan. "Continuous treatment of Acid Red B with activated sludge bioaugmented by a yeast Candida tropicalis TL-F1 and microbial community dynamics." Water Science and Technology 76, no. 11 (August 24, 2017): 2979–87. http://dx.doi.org/10.2166/wst.2017.473.

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Abstract Continuous treatment of Acid Red B (ARB) with activated sludge (AS) bioaugmented by an azo-degrading yeast Candida tropicalis TL-F1 under aerobic conditions was investigated in the form of sequencing batch tests. Dynamics of both bacterial and fungal communities were analyzed using polymerase chain reaction followed by denaturing gradient gel electrophoresis (PCR-DGGE) method. The results showed that bioaugmentation with the yeast TL-F1 improved the performance of AS for continuously decolorizing, degrading and detoxifying ARB. Meanwhile, the AS systems bioaugmented by the yeast TL-F1 showed higher sludge concentration and better AS settleability. The result of PCR-DGGE suggested that microbial communities of both bacteria and fungi shifted due to treatment of ARB and bioaugmentation. Some dominant bacteria and fungi were identified as probably efficient degraders of ARB or its decolorization byproducts. Furthermore, the yeast TL-F1 was found as one of the dominant fungi in all the three bioaugmented systems, suggesting that bioaugmentation was successful due to the colonization of the yeast TL-F1 in AS systems.

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Ghosh, Jayanta, Suman Bhaumik, and Atanu Bhattacharya. "Comparison of internal conversion dynamics of azo and azoxy energetic moieties through the (S1/S0)CI conical Intersection: An ab initio multiple spawning study." Chemical Physics 513 (September 2018): 221–29. http://dx.doi.org/10.1016/j.chemphys.2018.07.041.

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Niklas, Beata, Bruno Lapied, and Wieslaw Nowak. "In Search of Synergistic Insect Repellents: Modeling of Muscarinic GPCR Interactions with Classical and Bitopic Photoactive Ligands." Molecules 27, no. 10 (May 20, 2022): 3280. http://dx.doi.org/10.3390/molecules27103280.

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Insect vector-borne diseases pose serious health problems, so there is a high demand for efficient molecules that could reduce transmission. Using molecular docking and molecular dynamics (MD) simulation, we studied a series of compounds acting on human and insect muscarinic acetylcholine receptors (mAChRs), a novel target of synergistic agents in pest control. We characterized early conformational changes of human M1 and fruit fly type-A mAChR G protein-coupled receptors (GPCRs) in response to DEET, IR3535, and muscarine binding based on the MD analysis of the activation microswitches known to form the signal transduction pathway in class A GPCRs. We indicated groups of microswitches that are the most affected by the presence of a ligand. Moreover, to increase selectivity towards insects, we proposed a new, bitopic, photoswitchable mAChR ligand—BQCA-azo-IR353 and studied its interactions with both receptors. Modeling data showed that using a bitopic ligand may be a promising strategy in the search for better insect control.

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