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Academic literature on the topic 'Oxazine dyes'

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Published: 18 May 2024

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Journal articles on the topic "Oxazine dyes"

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Luangdilok, W., and T. Panswad. "Effect of chemical structures of reactive dyes on color removal by an anaerobic-aerobic process." Water Science and Technology 42, no. 3-4 (August 1, 2000): 377–82. http://dx.doi.org/10.2166/wst.2000.0406.

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An Anaerobic/Aerobic SBR system was used to treat a synthetic wastewater with glucose and acetic acid (1000 mg/l COD) as carbon sources together with 20 and 100 mg/l of four different reactive dyes: disazo vinylsulphonyl, anthraquinone vinylsulphonyl, anthraquinone monochlorotriazinyle and oxazine. The decolorization efficiencies of the first three dyes at the 20 mg/l dye concentration were 63, 64 and 66%, respectively, and at the 100 mg/l dye concentration were 58, 32 and 41%, respectively. For the disazo dye, two color removal rates were evident, with the initial rate in the first two hours of the anaerobic stage higher than the latter. For the two anthraquinone dyes, only one rate of color removal was seen. For the oxazine dye, a high decolorization was observed in the reactor, but when disturbed, the color re-appeared for unexplainable reasons. The phosphorus removal efficiencies were 78, 52, 41 and 96% for the four dyes of 20 mg/l, respectively, while the corresponding numbers for the 100 mg/lcondition were 48, 48, 48 and 42%, respectively, and different types of dyes had different impacts on the phosphorus removal performance. COD and TKN removals were very high, i.e., 90–99 percent. The disazo reactive dye was decolorized by the reductive reaction, which resulted in the cleavage of the azo bond. Meanwhile, the decolorization of anthraquinone dyes is believed to be through the direct adsorption of dyes on to the floc materials.
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Urrutia, María N., and Cristina S. Ortiz. "Novel oxazine and oxazone dyes: aggregation behavior and physicochemical properties." New Journal of Chemistry 40, no. 12 (2016): 10161–71. http://dx.doi.org/10.1039/c6nj02053d.

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Blanchard, G. J. "An MNDO calculational study of selected oxazine, thiazine and oxazone dyes." Chemical Physics 138, no. 2-3 (November 1989): 365–75. http://dx.doi.org/10.1016/0301-0104(89)87142-3.

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Fleming, Scott, Andrew Mills, and Tell Tuttle. "Predicting the UV–vis spectra of oxazine dyes." Beilstein Journal of Organic Chemistry 7 (April 15, 2011): 432–41. http://dx.doi.org/10.3762/bjoc.7.56.

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In the current work we have investigated the ability of time-dependent density functional theory (TD-DFT) to predict the absorption spectra of a series of oxazine dyes and the effect of solvent on the accuracy of these predictions. Based on the results of this study, it is clear that for the series of oxazine dyes an accurate prediction of the excitation energy requires the inclusion of solvent. Implicit solvent included via a polarizable continuum approach was found to be sufficient in reproducing the excitation energies accurately in the majority of cases. Moreover, we found that the SMD solvent model, which is dependent on the full electron density of the solute without partitioning into partial charges, gave more reliable results for our systems relative to the conductor-like polarizable continuum model (CPCM), as implemented in Gaussian 09. In all cases the inclusion of solvent reduces the error in the predicted excitation energy to <0.3 eV and in the majority of cases to <0.1 eV.
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Miluski, Piotr, Marcin Kochanowicz, Jacek Żmojda, and Dominik Dorosz. "Theoretical Investigation of Oxazine 170 Perchlorate Doped Polymeric Optical Fiber Amplifier." Mathematical Problems in Engineering 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/4024191.

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Optical signal amplification in the waveguiding structure of optical fibers can be used for optical telecommunication systems and new light sources constructions. Organic dyes doped materials are interesting for new applications in polymeric optical fibers technology due to their benefits (efficient fluorescence, high absorption cross section, and easy processing). This article presents a numerical simulation of gain in poly(methyl methacrylate) optical fiber doped by Oxazine 170 Perchlorate. The calculated gain characteristic for the used dye molar concentration (0.2·10-6–1.4·10-6) and pump power (1–10 kW) is presented. The fabricated fluorescent polymeric optical fiber is also shown. The presented analysis can be used for optical amplifier construction based on dye-doped polymeric optical fiber (POF).
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Kusinski, Matthew, Jayashree Nagesh, Margarita Gladkikh, Artur F. Izmaylov, and Rebecca A. Jockusch. "Deuterium isotope effect in fluorescence of gaseous oxazine dyes." Physical Chemistry Chemical Physics 21, no. 10 (2019): 5759–70. http://dx.doi.org/10.1039/c8cp05731a.

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Chen, Guangming, Nobuo Iyi, Ryo Sasai, Taketoshi Fujita, and Kenji Kitamura. "Intercalation of Rhodamine 6G and Oxazine 4 into Oriented Clay Films and Their Alignment." Journal of Materials Research 17, no. 5 (May 2002): 1035–40. http://dx.doi.org/10.1557/jmr.2002.0153.

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The cationic dyes rhodamine 6G (R6G) and oxazine 4 (Ox4) were intercalated into oriented lithium hectorite (LiHT, a synthetic fluor-mica) films by ion-exchange, and their orientation was studied by x-ray and polarized spectroscopy. Orientation of dyes was determined by basal spacing obtained by x-ray diffraction data, showing that angles of the long axis were 60° for R6G and 47° for Ox4 against the layer. Polarized ultraviolet-visible spectroscopy showed that the high-order H-aggregate of R6G and Ox4 were oriented at 64° and 52° against layers, respectively; other states of dyes were oriented at much lower angles. The interlayer distance was mostly determined by dimensions of the high-order H-aggregate.
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Nieckarz, Robert J., Jos Oomens, Giel Berden, Pavel Sagulenko, and Renato Zenobi. "Infrared multiple photon dissociation (IRMPD) spectroscopy of oxazine dyes." Physical Chemistry Chemical Physics 15, no. 14 (2013): 5049. http://dx.doi.org/10.1039/c3cp00158j.

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Nikolaev, S. V., V. V. Pozhar, and M. I. Dzyubenko. "EMISSION CHARACTERISTICS OF OXAZINE DYES INCORPORATED IN SOLID POLYURETHANE MATRICES." Telecommunications and Radio Engineering 70, no. 3 (2011): 269–82. http://dx.doi.org/10.1615/telecomradeng.v70.i3.60.

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Umarov, K. U., A. N. Nizamov, N. Nizamov, and M. O. Yunusova. "Spectral-fluorescent properties of oxazine dyes in water-soluble polymers." Journal of Applied Spectroscopy 59, no. 3-4 (September 1993): 743–45. http://dx.doi.org/10.1007/bf00661812.

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Dissertations / Theses on the topic "Oxazine dyes"

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Adhikari, Ratan. "Studies on the physico-chemical characteristics of selected oxazine dyes and their interactions with surfactants." Thesis, University of North Bengal, 2004. http://hdl.handle.net/123456789/829.

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Hong, Qiang. "Wavepackets and electron transfer in solvated oxazine dyes." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244286.

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Seliverstova, E. V., N. K. Ibrayev, and S. E. Kudaibergenov. "Properties of Langmuir-Blodgett Films Based on Organosoluble Polyelectrolyte-Surfactant Complex and Oxazine Dye." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35000.

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Preparation procedure of organosoluble stoichiometric polycomplex based on cationic polyelectrolyte and anionic surfactant has been described. It was shown the formation of mixed monolayers consisting of polyelectrolyte-surfactant complex and dye molecules at the water-air interface. Assembling conditions of fluorescent nanosized solid Langmuir-Blodgett films based on polycomplex and dye Nile Red were defined and the spectral-luminescent properties of obtained films were studied. Absorption and fluorescence spectra of mixed Langmuir-Blodgett films revealed that electrostatic interaction between polycomplex and dye molecules is responsible for formation of dimers. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35000
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Pauff, Steven M. "Advancements in the Synthesis and Application of Near-Infrared Imaging Reagents: A Dissertation." eScholarship@UMMS, 2015. https://escholarship.umassmed.edu/gsbs_diss/751.

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Fluorescence-based imaging techniques provide a simple, highly sensitive method of studying live cells and whole organisms in real time. Without question, fluorophores such as GFP, fluorescein, and rhodamines have contributed vastly to our understanding of both cell biology and biochemistry. However, most of the fluorescent molecules currently utilized suffer from one major drawback, the use of visible light. Due to cellular autofluorescence and the absorbance of incident light by cellular components, fluorescence imaging with visible wavelength fluorophores often results in high background noise and thus a low signal-to-noise ratio. Fortunately, this situation can be ameliorated by altering the wavelength of light used during imaging. Near-infrared (NIR) light (650-900 nm) is poorly absorbed by cells; therefore, fluorophores excited by this light provide a high signal-to-noise ratio and low background in cellular systems. While these properties make NIR fluorophores ideal for cellular imaging, most currently available NIR molecules cannot be used in live cells. The first half of this thesis addresses the synthetic difficulties associated with preparing NIR fluorophores that can be used within living systems. Small molecule NIR fluorophores are inherently hydrophobic which makes them unsuitable for use in the aqueous environment of the cell. Water-solubility is imparted to these dyes through highly polar sulfonates, which subsequently prevents the dyes from entering the cell. The novel work presented here details vii synthetic routes to aid in the development of sulfonated NIR fluorophores, which can be delivered into live cells through the inclusion of an esterase-labile sulfonate protecting group. Application of these synthetic techniques should allow for the development of novel NIR fluorophores with intracellular applications. The second half of this thesis addresses the need for novel NIR imaging reagents. Although several classes of NIR scaffolds do exist, most NIR probes are derivatives of a single class, heptamethine indocyanines. The work described here increases this palette by displaying the ability of NIR oxazines to function as an imaging reagent in live cells and in vivo and as a molecular sensor of biologically-relevant environmental conditions. Combined, the work contained herein has the capacity to not only advance the current NIR toolkit, but to expand it so that fluorescence imaging can move out of the dark and into the NIR light.
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Pauff, Steven M. "Advancements in the Synthesis and Application of Near-Infrared Imaging Reagents: A Dissertation." eScholarship@UMMS, 2001. http://escholarship.umassmed.edu/gsbs_diss/751.

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Fluorescence-based imaging techniques provide a simple, highly sensitive method of studying live cells and whole organisms in real time. Without question, fluorophores such as GFP, fluorescein, and rhodamines have contributed vastly to our understanding of both cell biology and biochemistry. However, most of the fluorescent molecules currently utilized suffer from one major drawback, the use of visible light. Due to cellular autofluorescence and the absorbance of incident light by cellular components, fluorescence imaging with visible wavelength fluorophores often results in high background noise and thus a low signal-to-noise ratio. Fortunately, this situation can be ameliorated by altering the wavelength of light used during imaging. Near-infrared (NIR) light (650-900 nm) is poorly absorbed by cells; therefore, fluorophores excited by this light provide a high signal-to-noise ratio and low background in cellular systems. While these properties make NIR fluorophores ideal for cellular imaging, most currently available NIR molecules cannot be used in live cells. The first half of this thesis addresses the synthetic difficulties associated with preparing NIR fluorophores that can be used within living systems. Small molecule NIR fluorophores are inherently hydrophobic which makes them unsuitable for use in the aqueous environment of the cell. Water-solubility is imparted to these dyes through highly polar sulfonates, which subsequently prevents the dyes from entering the cell. The novel work presented here details vii synthetic routes to aid in the development of sulfonated NIR fluorophores, which can be delivered into live cells through the inclusion of an esterase-labile sulfonate protecting group. Application of these synthetic techniques should allow for the development of novel NIR fluorophores with intracellular applications. The second half of this thesis addresses the need for novel NIR imaging reagents. Although several classes of NIR scaffolds do exist, most NIR probes are derivatives of a single class, heptamethine indocyanines. The work described here increases this palette by displaying the ability of NIR oxazines to function as an imaging reagent in live cells and in vivo and as a molecular sensor of biologically-relevant environmental conditions. Combined, the work contained herein has the capacity to not only advance the current NIR toolkit, but to expand it so that fluorescence imaging can move out of the dark and into the NIR light.
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Montelmacher, Pascal. "Spectroscopie coherente en lumiere incoherente : problemes lies aux mesures de melange a quatre ondes." Paris 6, 1987. http://www.theses.fr/1987PA066537.

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Etude des processus de relaxation dephasante (t2) de molecules de colorant (cresyl violet) dissoutes dans 1 film mince de colle cellulosique en fonction de la temperature. Utilisation d'une technique d'optique non lineaire, de type melange a 4 ondes: la spectroscopie coherente en lumiere incoherente. Afin d'interpreter les resultats, mise au point d'un 1er modele assimilant le niveau excite a un continuum d'etats vibrationnels, calcul considere comme etape preliminaire d'un calcul plus sophistique. Elaboration d'un 2eme modele decrivant l'action d'une excitation non lineaire sur un systeme a 2 niveaux en prenant en consideration les effets de bord des bande et d'ecart a la resonance. 2 valeurs du parametre t2 en fonction de la temperature sont deduites
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Book chapters on the topic "Oxazine dyes"

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Van Thien, Tran. "Thiazine, Oxazine, and Phenazine Leuco Dyes." In Chemistry and Applications of Leuco Dyes, 67–95. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-46906-5_3.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Oxazine Dyes." In Metal-Free Synthetic Organic Dyes, 177–78. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00012-1.

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Bolton, R. "Phenazine, oxazine, thiazine and sulfur dyes." In Second Supplements to the 2nd Edition of Rodd's Chemistry of Carbon Compounds, 173–201. Elsevier, 1991. http://dx.doi.org/10.1016/b978-044453347-0.50381-5.

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Horobin, R. W. "Oxazines and related dyes." In Conn’s Biological Stains, 277–91. Taylor & Francis, 2020. http://dx.doi.org/10.1201/9781003076841-19.

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Conference papers on the topic "Oxazine dyes"

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Quitevis, E. L., K. G. Casey, and T. W. Sinor. "Picosecond reorientational dynamics in polymer solutions." In International Laser Science Conference. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.thl52.

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The reorientational dynamics of two oxazine dyes, cresyl violet and oxazine 1, have been studied in dilute and semidilute solutions of poly(ethylene oxide) in methanol. The approach to this study is to use a synchronously pumped dye laser to do picosecond visible pump-probe measurements of transient absorption recovery.
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STEINHURST, DANIEL A., ANDREW P. BARONAVSKI, and JEFFREY C. OWRUTSKY. "ULTRAFAST TRANSIENT SECOND HARMONIC GENERATION FROM OXAZINE DYES AT THE AIR/WATER INTERFACE." In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0066.

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Kulikov, S., J. P. Galaup, F. Chaput, and J. P. Boilot. "Hole-burning and site selection spectroscopy of porphyrins in various sol-gel matrices." In Spectral Hole-Burning and Luminescence Line Narrowing: Science and Applications. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/shbl.1992.mb15.

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Various organic dyes have been embedded in matrices of transparent silica porous glasses prepared at room temperature by the sol-gel technique (1). The basic reaction of this process is an inorganic polymerization between silanol reactive monomers (≡Si-OH). These inorganic hosts are a link between organic and high temperature inorganic glasses. Hole-burning measurements have been published previously on chlorin and oxazine-4 perchlorate in a silicate glass (2).
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Kulikov, S., J. P. Galaup, F. Chaput, and J. P. Boilot. "Hole-burning and site selection spectroscopy of porphyrins in various sol-gel matrices." In Spectral Hole-Burning and Luminescence Line Narrowing: Science and Applications. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/shbl.1992.tub15.

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Various organic dyes have been embedded in matrices of transparent silica porous glasses prepared at room temperature by the sol-gel technique (1). The basic reaction of this process is an inorganic polymerization between silanol reactive monomers (≡Si-OH). These inorganic hosts are a link between organic and high temperature inorganic glasses. Hole-burning measurements have been published previously on chlorin and oxazine-4 perchlorate in a silicate glass(2).
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Beuerman, Erich, Nikolay S. Makarov, Mikhail Drobizhev, and Aleksander Rebane. "Justification of two-level approximation for description of two-photon absorption in oxazine dyes." In OPTO, edited by Robert L. Nelson, François Kajzar, and Toshikuni Kaino. SPIE, 2010. http://dx.doi.org/10.1117/12.842790.

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Ichino, Y., Y. Kanematsu, and T. Kushida. "Site-Selective Excitation Spectroscopy of Dye-doped Inorganic Amorphous Hosts Prepared by Sol-Gel Method." In Spectral Hole-Burning and Related Spectroscopies: Science and Applications. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/shbs.1994.wd11.

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Dye-doped inorganic glasses prepared by a sol-gel method have received much interest during the last decade, especially for the application of optical media such as solid-state dye lasers and high-density optical memories.1-3 In order to obtain a preferable combination of host matrices and guest molecules for optical applications, it is important to know precisely about the electron-phonon interaction of the host-guest system. So far, we have experimentally determined the Debye-Waller factor, the site energy distribution function, and the density of states of low-frequency host vibrational modes weighted by the electron-phonon coupling strength in porphyrindoped polymers using a resonance fluorescence technique.4,5 In this study, sol-gel inorganic matrices, SiO2 and SiO2-TiO2, are examined using a similar method by employing a cationic laser dye, oxazine 4 perchlorate(ox4), as the optical center.
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