1
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Wei S, Zheng H, Zhao JJ, Yu S, Wu B, Zhang G, Zhang S. Substituent effect in self-sensitized degradation of Acid Orange 7 in solar/diketone processes. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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2
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Han S, Lee D, Kim S, Kim HH, Jeong S, Kim J. Contrast Agents for Photoacoustic Imaging: A Review Focusing on the Wavelength Range. BIOSENSORS 2022; 12:bios12080594. [PMID: 36004990 PMCID: PMC9406114 DOI: 10.3390/bios12080594] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 07/29/2022] [Accepted: 07/31/2022] [Indexed: 11/16/2022]
Abstract
Photoacoustic imaging using endogenous chromophores as a contrast has been widely applied in biomedical studies owing to its functional imaging capability at the molecular level. Various exogenous contrast agents have also been investigated for use in contrast-enhanced imaging and functional analyses. This review focuses on contrast agents, particularly in the wavelength range, for use in photoacoustic imaging. The basic principles of photoacoustic imaging regarding light absorption and acoustic release are introduced, and the optical characteristics of tissues are summarized according to the wavelength region. Various types of contrast agents, including organic dyes, semiconducting polymeric nanoparticles, gold nanoparticles, and other inorganic nanoparticles, are explored in terms of their light absorption range in the near-infrared region. An overview of the contrast-enhancing capacity and other functional characteristics of each agent is provided to help researchers gain insights into the development of contrast agents in photoacoustic imaging.
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Affiliation(s)
- Seongyi Han
- Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering, Pusan National University, Busan 46241, Korea;
| | - Dakyeon Lee
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan 50612, Korea;
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea;
| | - Sungjee Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea;
| | - Hyung-Hoi Kim
- Department of Laboratory Medicine and Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan 49241, Korea
- Correspondence: (H.-H.K.); (S.J.); (J.K.)
| | - Sanghwa Jeong
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan 50612, Korea;
- Correspondence: (H.-H.K.); (S.J.); (J.K.)
| | - Jeesu Kim
- Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering, Pusan National University, Busan 46241, Korea;
- Correspondence: (H.-H.K.); (S.J.); (J.K.)
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3
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Solvatochromism and azo–hydrazo tautomerism of novel arylazo pyridone dyes: Experimental and quantum chemical study. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.08.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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4
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Ma D, Xu C, Hou W, Zhao C, Ma J, Huang X, Jia Q, Ma L, Diao J, Liu C, Li M, Lu Y. Detecting Single‐Molecule Dynamics on Lipid Membranes with Quenchers‐in‐a‐Liposome FRET. Angew Chem Int Ed Engl 2019; 58:5577-5581. [DOI: 10.1002/anie.201813888] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/11/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Dong‐Fei Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chun‐Hua Xu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wen‐Qing Hou
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chun‐Yu Zhao
- Interdisciplinary Research Center on Biology and ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jian‐Bing Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xing‐Yuan Huang
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Qi Jia
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lu Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiajie Diao
- Department of Cancer BiologyUniversity of Cincinnati School of Medicine Cincinnati OH 45267 USA
| | - Cong Liu
- Interdisciplinary Research Center on Biology and ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ming Li
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China
| | - Ying Lu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China
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5
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Ma D, Xu C, Hou W, Zhao C, Ma J, Huang X, Jia Q, Ma L, Diao J, Liu C, Li M, Lu Y. Detecting Single‐Molecule Dynamics on Lipid Membranes with Quenchers‐in‐a‐Liposome FRET. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813888] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Dong‐Fei Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chun‐Hua Xu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wen‐Qing Hou
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chun‐Yu Zhao
- Interdisciplinary Research Center on Biology and ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jian‐Bing Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xing‐Yuan Huang
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Qi Jia
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lu Ma
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiajie Diao
- Department of Cancer BiologyUniversity of Cincinnati School of Medicine Cincinnati OH 45267 USA
| | - Cong Liu
- Interdisciplinary Research Center on Biology and ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ming Li
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China
| | - Ying Lu
- Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China
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6
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Reza Moradi. Adsorption of Azo Dye Direct Blue 71 from Aqueous Solution Using NiFe2O4/CP Nanoparticles: Kinetic and Isotherm Model. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024418130277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Namykin AA, Shushunova NA, Ulanova MV, Semyachkina-Glushkovskaya OV, Tuchin VV, Fedosov IV. Intravital molecular tagging velocimetry of cerebral blood flow using Evans Blue. JOURNAL OF BIOPHOTONICS 2018; 11:e201700343. [PMID: 29603902 DOI: 10.1002/jbio.201700343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/28/2018] [Indexed: 06/08/2023]
Abstract
The effects of light-driven enhancement of Evans Blue dye complexes with blood plasma proteins were observed for the first time, both in vitro and in vivo. The possible background of the effect concerns the photochemical cis-trans isomerization of the azo dye molecules. The effect was induced in the solution with a red laser with a wavelength of 638 nm, which corresponds to the peak of the dye absorption. The lifetime of the enhanced fluorescence is approximately 1 second and enables its use as an optically tagged molecular flow tracer for blood flow velocity measurements. Utilizing the effect, we performed for the first time the intravital molecular tagging velocimetry of the blood velocity in blood vessels in a living animal. The results of the measurements of the blood flow velocities in the cerebral veins of a group of healthy mice are presented.
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Affiliation(s)
- Anton A Namykin
- Saratov State University (National Research University), Saratov, Russia
| | | | - Maria V Ulanova
- Saratov State University (National Research University), Saratov, Russia
| | | | - Valery V Tuchin
- Saratov State University (National Research University), Saratov, Russia
- Tomsk State University (National Research University), Tomsk, Russia
- Institute of Precision Mechanics and Control, Russian Academy of Sciences, Saratov, Russia
| | - Ivan V Fedosov
- Saratov State University (National Research University), Saratov, Russia
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8
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Poß M, Zittel E, Meschkov A, Schepers U, Feldmann C. Fluorescent Sulfonate-Based Inorganic-Organic Hybrid Nanoparticles for Staining and Imaging. Bioconjug Chem 2018; 29:2818-2828. [PMID: 30004681 DOI: 10.1021/acs.bioconjchem.8b00423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sulfonate-based inorganic-organic hybrid nanoparticles (IOH-NPs) with the general saline composition [Gd(OH)]2+n/2[ Rdye(SO3) n] n- showing optical absorption and emission in the blue to red spectral regime are presented for the first time. All IOH-NPs are prepared via straightforward aqueous synthesis and instantaneously result in colloidally highly stable suspensions with mean particle diameters of 40-50 nm and high zeta potentials (-20 to -40 mV at pH 7.0). Specifically, the IOH-NPs comprise [Gd(OH)]2+2[CSB]4-, [Gd(OH)]2+2[DB71]4-, [Gd(OH)]2+[NFR]2-, [Gd(OH)]2+[AR97]2-, and [Gd(OH)]2+2[EB]4- showing blue, orange, red, and infrared absorption and emission ([CSB]: Chicago Sky Blue; [DB71]: Direct Blue 71; [NFR]: Nuclear Fast Red; [AR97]: Acid Red 97; [EB]: Evans Blue). The novel IOH-NPs are characterized by electron microscopy, dynamic light scattering, infrared spectroscopy, energy-dispersive X-ray analysis, thermogravimetry, elemental analysis, and fluorescence spectroscopy. In vitro studies based on HeLa and HUVEC cells were exemplarily performed with [Gd(OH)]2+2[EB]4- IOH-NPs and show intense fluorescence and only moderate toxicity at concentrations of 1 to 10 μg/mL. Based on aqueous synthesis, good colloidal stability, absence of severely toxic metals (e.g., Cd2+, Pb2+), use of molecular dyes that are already known for staining in cell biology and histology, extremely high dye load per nanoparticle (70-80 wt %), and blue to red absorption and fluorescence, the sulfonate-based IOH-NPs can be highly interesting for staining, fluorescence microscopy, and optical imaging.
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Affiliation(s)
- Marieke Poß
- Institut für Anorganische Chemie , Karlsruhe Institute of Technology (KIT) , Engesserstrasse 15 , 76131 Karlsruhe , Germany
| | - Eva Zittel
- Institute of Toxicology and Genetics , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
| | - Anna Meschkov
- Institute of Toxicology and Genetics , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
| | - Ute Schepers
- Institute of Toxicology and Genetics , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany.,Institute of Organic Chemistry , Karlsruhe Institute of Technology (KIT) , Fritz-Haber Weg 6 , 76131 Karlsruhe , Germany
| | - Claus Feldmann
- Institut für Anorganische Chemie , Karlsruhe Institute of Technology (KIT) , Engesserstrasse 15 , 76131 Karlsruhe , Germany
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9
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Multi-wavelength thermal-lens spectrometry for high-accuracy measurements of absorptivities and quantum yields of photodegradation of a hemoprotein–lipid complex. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2016.01.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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10
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Photofading in cotton fibers dyed using red, yellow, and blue direct dyes during examination with microspectrophotometry (MSP). Forensic Chem 2017; 5:72-78. [PMID: 29251299 DOI: 10.1016/j.forc.2017.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Microspectrophotometry (MSP) is a rapid, nondestructive technique for the analysis of color in textile fibers. This technique combines microscopy and ultraviolet (UV)/visible (Vis) spectroscopy, allowing for very small colored samples, like dyed textile fibers, to be analyzed directly and thereby eliminates the need for time consuming and destructive extractions. While MSP is generally accepted to be a nondestructive evaluation method, a loss of color during analysis, or photofading can occur. In this work, cotton fabric dyed with blue, yellow, and red direct dyes at different concentrations. Dye photofading during MSP examination was investigated by measuring the absorbance at a specific position on the fibers from these fabrics, periodically over the course of 30 minutes. Visible color loss and a reduction in absorbance was observed for all three colors, but was most pronounced for the fibers dyed red. A major goal of this study is to increase awareness of the photofading phenomenon when analyzing cotton fibers using MSP.
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11
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Cai J, Li Z, Qiu Y, OuYang Z, Lin W, Yang L, Feng W, Yu X, Dong W. The syntheses, structures and azo–hydrazone tautomeric studies of three triazole/tetrazole azo dyes. NEW J CHEM 2016. [DOI: 10.1039/c5nj02539g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The azo–hydrazone tautomerism for three triazole/tetrazole azo dyes can be elucidated by 1H, 13C NMR and UV-vis spectra.
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Affiliation(s)
- Jiawei Cai
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Zhixin Li
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Yanxuan Qiu
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Zhijian OuYang
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Wenning Lin
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Liu Yang
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Weijin Feng
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Xinwei Yu
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
| | - Wen Dong
- School of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou
- China
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12
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Pal MK, Kushwah N, Wadawale AP, Manna D, Sudarsan V, Ghanty TK, Jain VK. Synthesis, characterization, photoluminescence and computational studies of mono- and diorgano-gallium complexes containing azo linked salicylaldimine Schiff bases. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.10.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Mirković JM, Božić BĐ, Mutavdžić DR, Ušćumlić GS, Mijin DŽ. Solvent and structural effects on the spectral shifts of 5-(substituted phenylazo)-3-cyano-6-hydroxy-1-(2-hydroxyethyl)-4-methyl-2-pyridones. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.09.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Božić BĐ, Alimmari AS, Mijin DŽ, Valentić NV, Ušćumlić GS. Synthesis, structure and solvatochromic properties of novel dyes derived from 4-(4-nitrophenyl)-3-cyano-2-pyridone. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.03.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Cui G, Guan PJ, Fang WH. Photoinduced proton transfer and isomerization in a hydrogen-bonded aromatic azo compound: a CASPT2//CASSCF study. J Phys Chem A 2014; 118:4732-9. [PMID: 24940848 DOI: 10.1021/jp503865y] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Intramolecularly hydrogen-bonded aromatic azo compound 1-cyclopropyldiazo-2-naphthol (CPDNO) exhibits complicated excited-state behaviors, e.g., wavelength-dependent photoinduced proton transfer and photoproducts. Its photochemistry differs from that of common aromatic azo compounds in which cis-trans photoisomerization is dominant. To rationalize the intriguing photochemistry of CPDNO at the atomic level, we have in this work employed the complete active space self-consistent field (CASSCF) and its second-order perturbation (CASPT2) methods to explore the S0, S1, and S2 potential-energy profiles relevant to enol-keto proton transfer and isomerization reactions. It is found that the proton transfer along the bright diabatic (1)ππ* potential-energy profile is almost barrierless, quickly forming the fluorescent (1)ππ* keto minimum. In this process, the dark (1)nπ* state is populated via a (1)ππ*/(1)nπ* crossing point, but the proton transfer on this dark state is suppressed heavily as a result of a large barrier. In addition, two deactivation paths that decay the S1 enol and keto minima to the S0 state, respectively, were uncovered. For the former, it is exoenergetic and thereby thermodynamically favorable; for the latter, it is a little endothermic (ca. 5 kcal/mol). Both are energetically allowable concerning the available total energy. Finally, on the basis of the present results, the experimentally observed wavelength-dependent photoproducts were explained very well.
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Affiliation(s)
- Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University , Beijing 100875, China
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16
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Kucharska E, Hanuza J, Lorenc J. Conformation of azo-bridge in 3,3'-dinitro-2,2'-azobipyridine and its 4,4'(or 5,5' or 6,6')-dimethyl-derivatives: vibrational studies and DFT quantum chemical calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 127:370-380. [PMID: 24632432 DOI: 10.1016/j.saa.2014.02.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/13/2014] [Accepted: 02/16/2014] [Indexed: 06/03/2023]
Abstract
Syntheses of 3,3'-dinitro-2,2'-azobipyridine and 4,4' (or 5,5' or 6,6')-dimethyl-3,3'-dinitro-2,2'-azobipyridine have been described. Molecular structures of these compounds have been determined and compared, to the basic compound, azobipyridine, reported by us earlier. The conformation of the azo-bond and other structural data are discussed in terms of substitution place of methyl chromophore. Fourier transform IR and Raman spectra of these compounds have been measured and analysed. The 6-311G (2d,2p) basis set with the B3LYP functional have been used to discuss the space conformation and dynamics of the studied compounds.
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Affiliation(s)
- E Kucharska
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, 118/120 Komandorska, 53-345 Wrocław, Poland.
| | - J Hanuza
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, 118/120 Komandorska, 53-345 Wrocław, Poland; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
| | - J Lorenc
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, 118/120 Komandorska, 53-345 Wrocław, Poland
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17
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Duarte L, Giuliano BM, Reva I, Fausto R. Tautomers and UV-induced photoisomerization of a strongly intramolecularly H-bonded aromatic azo-dye: 1-(cyclopropyl)diazo-2-naphthol. J Phys Chem A 2013; 117:10671-80. [PMID: 24059591 DOI: 10.1021/jp405061b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Aromatic azo compounds have a wide range of industrial applications as dyes in optical and color-changing materials and can also be exploited in the design of new photodynamic molecular systems. The azo derivative 1-(cyclopropyl)diazo-2-naphthol was isolated in low-temperature cryogenic matrices, and its molecular structure, tautomeric equilibrium, and photochemical transformations were characterized by infrared spectroscopy and theoretical calculations. Only azo-enol forms having the OH group involved in a strong intramolecular hydrogen bond, forming a six-membered ring with the azo group, were found experimentally. Irradiation with a narrowband source in the near-UV range generates different rotameric and tautomeric azo-enol and keto-hydrazone forms that can be interconverted at different irradiation wavelengths.
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Affiliation(s)
- Luís Duarte
- Department of Chemistry, University of Coimbra , P-3004-535 Coimbra, Portugal
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18
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Graham J, Rauf M, Hisaindee S, Nawaz M. Experimental and theoretical study of the spectral behavior of Trypan Blue in various solvents. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.02.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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20
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Ioannidis M, Gentleman AS, Ho L, Lincoln SF, Sumby CJ. Complexation and structural studies of a sulfonamide aza-15-crown-5 derivative. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Synthesis, reactions, and biological activity of 1,4-benzothiazine derivatives. MONATSHEFTE FUR CHEMIE 2010. [DOI: 10.1007/s00706-010-0312-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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IRSHAIDAT TAREQ. The Effect of Substituents on Characteristics of Functional Material: Consequences of Fusing Schiff Bases and Some of Its Proton Substitutes on Isobenzofuran. Polycycl Aromat Compd 2010. [DOI: 10.1080/10406630903504663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Irshaidat T. On the factors affecting tautomerism: consequences of N-substituents (Me/NR 2) in structures derived from salicylaldimines. MOLECULAR SIMULATION 2010. [DOI: 10.1080/08927020903096080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Li Y, Patrick BO, Dolphin D. Near-Infrared Absorbing Azo Dyes: Synthesis and X-ray Crystallographic and Spectral Characterization of Monoazopyrroles, Bisazopyrroles, and a Boron−Azopyrrole Complex. J Org Chem 2009; 74:5237-43. [DOI: 10.1021/jo9003019] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan Li
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, B.C., V6T 1Z1, Canada
| | - Brian O. Patrick
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, B.C., V6T 1Z1, Canada
| | - David Dolphin
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, B.C., V6T 1Z1, Canada
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Irshaidat T. A DFT study on the mono lithium and sodium salts of N-(2-hydroxyphenyl)salicylaldimine. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.12.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Synthesis and tautomeric structure of 6-arylhydrazono 1H-pyrazolo[3′,4′:4,5]pyrimido[1,6-b][1,2,4]triazepines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Han L, Jiang Y, Li W, Li Y, Hao P. Spectroscopic investigations of a novel tricyanofuran dye for nonlinear optics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:86-89. [PMID: 18249030 DOI: 10.1016/j.saa.2007.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Revised: 11/07/2007] [Accepted: 11/15/2007] [Indexed: 05/25/2023]
Abstract
A novel tricyanofuran dye was synthesized and the dye-in-polymer films were fabricated by spin-coating process. The spectroscopic properties of the dye in the solutions and polymer films were investigated by the absorption spectra and fluorescence emission spectra. It is found that the absorption and fluorescence maxima are largely red-shifted along with the increase of the solvent polarity. And the low values of fluorescence quantum yield in higher polarity solvents suggest the presence of twisted intramolecular charge transfer states of the dye. Moreover, the second order polarizability value of the novel dye was estimated based on the quantum-mechanical two-level model.
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Affiliation(s)
- Likun Han
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
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28
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Shawali AS, Mosselhi MA, Altablawy FM, Farghaly TA, Tawfik NM. Synthesis and tautomeric structure of 3,7-bis(arylazo)-6-methyl-2-phenyl-1H-imidazo[1,2-b]pyrazoles in ground and excited states. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.03.096] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kumar SA, Lo PH, Chen SM. Electrochemical selective determination of ascorbic acid at redox active polymer modified electrode derived from direct blue 71. Biosens Bioelectron 2008; 24:518-23. [PMID: 18586483 DOI: 10.1016/j.bios.2008.05.007] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Revised: 05/01/2008] [Accepted: 05/20/2008] [Indexed: 11/19/2022]
Abstract
A simple selective method for determination of ascorbic acid using polymerized direct blue 71 (DB71) is described. Anodic polymerization of the azo dye DB71 on glassy carbon (GC) electrode in 0.1M H(2)SO(4) acidic medium was found to yield thin and stable polymeric films. The poly(DB71) films were electroactive in wide pH range (1-13). A pair of symmetrical redox peaks at a formal redox potential, E('0)=-0.02V vs. Ag/AgCl (pH 7.0) was observed with a Nernstian slope -0.058V, is attributed to a 1:1 proton+electron involving polymer redox reactions at the modified electrode. Scanning electron microscope (SEM), atomic force microscope (AFM) and electrochemical impedance spectroscopy (EIS) measurements were used for surface studies of polymer modified electrode. Poly(DB71) modified GC electrode showed excellent electrocatalytic activity towards ascorbic acid in neutral buffer solution. Using amperometric method, linear range (1x10(-6)-2x10(-3)M), dynamic range (1x10(-6)-0.01M) and detection limit (1x10(-6)M, S/N=3) were estimated for measurement of ascorbic acid in pH 7.0 buffer solution. Major interferences such as dopamine and uric acid are tested at this modified electrode and found that selective detection of ascorbic acid can be achieved. This new method successfully applied for determination of ascorbic acid in commercial tablets with satisfactory results.
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Affiliation(s)
- S Ashok Kumar
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
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30
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Han S, Lee M. New photochemical approach to cellulose fabric and photoinitiator system. J Appl Polym Sci 2007. [DOI: 10.1002/app.26053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Ren TZ, Yuan ZY, Su BL. Direct blue dye-encapsulated mesostructured MCM-41 composites: Microwave-assisted preparation and characterization. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.12.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Hassanzadeh A, Loghmani-Khouzani H, Sadeghi MM, Mehrabi H. Solvatochromic, spectroscopic and DFT studies of a novel synthesized dye: l-(4-Dimethylaminophenyl)-2-(5H-phenanthridine-6-ylidene)-ethanone (6-KMPT). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:105-13. [PMID: 16949336 DOI: 10.1016/j.saa.2006.06.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Accepted: 06/27/2006] [Indexed: 05/11/2023]
Abstract
A novel solvatochromic l-(4-dimethylaminophenyl)-2-(5H-phenanthridine-6-ylidene)-ethanone (6-KMPT) dye was synthesized and characterized by means of NMR, IR, mass spectroscopies. Also, it was studied using UV-vis and fluorescence spectroscopic methods in a broad range of solvents. UV-vis results showed that increasing 6-KMPT concentration dose not cause molecular aggregation in chloroform. Varying the temperature in the range from 25 to 55 degrees C dose not have a significant effect on the characteristics bands of the molecule. However, in the presence of surfactant SDS the UV-vis spectrum undergoes drastic alteration. This phenomenon is related to the removal of hydrogen atom from nitrogen atom of phenanthridine moiety. Fluorescence spectroscopic results showed that 6-KMPT has an appreciable fluorescence quantum yield. The effect of excitation wavelength, concentration of 6-KMPT, concentration of oxygen and surfactants (SDS, C(16)TAB, CPC, Brij-35) were studied. Further results showed that the fluorescent behavior of 6-KMPT can be attributed to planarity induced by intramolecular hydrogen bonding which can in turn be destroyed by anionic surfactant SDS. Results showed that oxygen and SDS can be operate as fluorescence quencher compounds for 6-KMPT and Stern-Volmer plot showed a straight line. Fluorescence polarization and anisotropy of 6-KMPT in chloroform strongly depend on concentration. The 6-KMPT exhibits solvent-induced spectral band shifts. By using Lippert equation, the change of dipole moment of 6-KMPT molecule upon excitation was estimated as 6.39 D. Furthermore, absorption, fluorescence emission, Stokes shift values and fluorescence quantum yield (Phi(F)) of 6-KMPT in different solvents of polarity were determined. Maximum Phi(F) value of 0.372 for 6-KMPT molecule was found in ethanol solvent with a Stokes shift of 2446.8 cm(-1). The results of DFT calculations showed that tautomer 2c (enol) energetically is more stable than tautomer 2b (keto) in gas phase whereas it was vice versa in CHCl(3).
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Hassanzadeh A, Zeini-Isfahani A, Habibi MH. Molecular exciton theory calculations based on experimental results for Solophenyl red 3BL azo dye-surfactants interactions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 64:464-76. [PMID: 16644265 DOI: 10.1016/j.saa.2005.07.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2005] [Accepted: 07/21/2005] [Indexed: 05/08/2023]
Abstract
The influence of anionic surfactant: sodium dodecyl sulfate (SDS) and cationic surfactants: cetyltrimethylammonium bromides (C16TAB) and cetylpyridinium chloride (CPC) on the electronic spectrum of Solophenyl red 3BL azo dye (C.I. Direct 80) in aqueous solution was studied by means of UV-vis spectroscopy. Since, Solophenyl red 3BL azo dye was an anionic soluble dye, therefore, did not observed any interaction between SDS and 3BL dye. On the other hand, in the case of C16TAB, aggregation was reflected by a hyosochromic shift of the main absorption band and dye H-aggregation was responsible for the short wavelength absorption band. Also, UV-vis spectra showed that micelle formation occurs for C16TAB surfactant in 3BL dye aqueous solution in lower concentration in comparison with C16TAB in aqueous solution lonely. Micelle formation was indicated by a red shift of the whole spectra with respect to monomer location. The importance of hydrophobic interactions was revealed by the dependence of aggregation on the cationic surfactant structure. Further results showed that dye H-aggregation was occurred under the cationic surfactant CPC as well, but in this case micelle formation could not occur. Addition of CPC surfactant into the J-aggregate dye solution in highly acidic aqueous solution was also caused completely disaggregating of dimer molecules, which may be related to occuring an acid-base reaction between them. Applicability of the molecular exciton (Kasha) theory in order to interpret of aggregation results and to estimate dimer structure of 3BL dye under C16TAB and CPC surfactants addition was very poor and the calculated data based on this model showed that this simple point-dipole model could not describe our experimental results.
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Affiliation(s)
- Ali Hassanzadeh
- Department of Chemistry, University of Isfahan, Hezar Jerib Street, Isfahan 81745-73441, Iran
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Hassanzadeh A, Zeini-Isfahani A, Habibi MH, Heravi MRAP, Abdollahi-Alibeik M. 1H, 13C, NH, HH, CH COSY, HH NOESY NMR and UV-vis studies of Solophenyl red 3BL dye azo-hydrazone tautomerism in various solvents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 63:247-54. [PMID: 16406789 DOI: 10.1016/j.saa.2005.03.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2004] [Revised: 03/06/2005] [Accepted: 03/14/2005] [Indexed: 05/06/2023]
Abstract
Azo-hydrazone tautomeric behavior of polyazo Solophenyl red 3BL (C.I. Direct 80) dye in different solvents (water, methanol and DMSO) was investigated using 1H, 13C, NH, HH, CH COSY, HH NOESY NMR techniques and UV-vis spectroscopy. Two-dimensional NMR experiments were used to assign 1H, 13C and 15N NMR lines unambiguously. Results showed that the hydrazone-form proton NMR signal appeared in the weakest field with respect to tetramethylsilane, in comparison with the amide and phenolic proton NMR signals. UV-vis absorption spectroscopic evidences showed that azo-hydrazone mixture exists in water and DMSO solvents, but in methanol, only azo tautomer was dominant, which was in a good agreement with NMR spectroscopic results.
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Affiliation(s)
- A Hassanzadeh
- Department of Chemistry, University of Isfahan, Hezar Jerib Street, Isfahan 81745-73441, Iran
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Abstract
Photodynamic therapy offers the possibility of relatively selective tumour necrosis and normal tissue healing. It has many potential applications but as yet no clear role. Articles, editorials and case reports published primarily in English and listed in Medline/ISI up to April 2000 or identified by a manual search have been reviewed in an attempt to provide a comprehensive overview of the use of photodynamic therapy in the alimentary tract. It is concluded that photodynamic therapy can be an effective treatment for superficial pre-malignant mucosal lesions and early cancers, especially in diffuse disease. Suitable patients include those wishing to avoid surgery, high risk subjects or those in whom other forms of treatment have failed. Superiority over other methods of ablation has not so far been demonstrated. Cheaper and more effective photosensitizers and improved techniques of light delivery are likely to increase the application of photodynamic therapy.
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