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solvatochromic Probe Based on Nanocellulose Membrane Coated with Zn-terpyridine Complex in a Layer-by-Layer Manner

Paper And Biomaterials 2019年第2期4卷 40-45页

作者： XinPing Li FaFa Song Meng Zhang BaiLiang Xue JingYi Nie ShunTian Jia YaoYu Wang Zhao Zhang Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development College of Bioresources Chemical and Materials EngineeringShaanxi University of Science and TechnologyXi'anShaanxi Province710021China State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhouGuangdong Province510640China Northwest University Xi'anShaanxi Province710069China

solvatochromic materials have recently attracted increasing attention owing to their great significance in the security and sensor *** this study,ultrafast explicit and implicit information was collected regarding a fluorescent nanocellulose membrane produced from nanocellulose membranes coated with a Zn-terpyridine complex(Zn-tpy)in a layer-by-layer *** fluorescent emissions of the nanocellulose membrane changed from yellow(CIE:x=0.37,y=0.45)to green(CIE:x=0.32,y=0.47)under a dichloromethane environment and 365-nm *** to the ease of dichloromethane volatilization,fluorescent emissions quickly returned to the original *** solvatochromic nanocellulose membranes,with ultrafast explicit and implicit information,exhibited valuable application prospects in anti-counterfeiting techniques.

关键词： solvatochromic explicit and implicit Zn-terpyridine complex layer-by-layer nanocellulose membrane

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Synthesis and Spectroscopic Properties of Ferrocenyl Derivative Containing Donor and Acceptor Groups

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International Journal of Organic Chemistry 2017年第3期7卷 284-294页

作者： Makoto Minato Chiharu Sorai Takashi Ito Masashi Kiguchi Midori Kato Department of Materials Chemistry Faculty of Engineering Yokohama National University Yokohama Japan Advanced Research Laboratory Hitachi Ltd. Hatoyama Japan

Much interest has been devoted to organometallic NLO materials. We have become interested in exploring the utility of ferrocenyl group as the conjugating bridge. Thus, we synthesized 1-{{[1,3-(5-methylbenzo)dithiol]-2-yli- dene}methyl}-1’-[2-(p-nitrophenyl)-(E)-ethenyl]ferrocene (1). This new ferrocenyl compound has a donor and an acceptor group in 1,1’-positions. Investigations of the solvatochromic property of the compound revealed that it has polarized structure in a polar solvent, such as DMF. SHG efficiency of the compound was estimated by an SHEW (second-harmonic generation with the evanescent wave) method.

关键词： Nonlinear Optical Material Ferrocenyl Derivative solvatochromic Property SHG Efficiency

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Synthesis and Photophysical Properties of Novel Highly Stable Zero/Bis-Zero Methine Cyanine Dyes Based on N-Bridgehead Heterocycles

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International Journal of Organic Chemistry 2018年第3期8卷 282-297页

作者： Ahmed I. Koraiem Islam M. Abdellah Ahmed M. El-Shafei Department of Chemistry Faculty of Science Aswan University Aswan Egypt Polymer and Color Chemistry Program North Carolina State University Raleigh USA

Cyanine dyes of zero/bis-zero methine incorporating imid-azo(1,2-a)Pyridine (quinoline) or pyrazino(1,2-a)pyridine (quinoline) with stable C-N bond were synthesized using keto-oxime methylene C-link heterocyclic quaternary salts [1-phenyl-3-methyl-pyrazolino-4-keto-oxime-α-methylene-bis-pyridin-(quinoin)-1(4)-di-ium-iodide(ethiodide) salts and 1-phenyl-3-methyl-pyrazolino- 4-ketooxime-α-methylene-N-2-methyl-bis pyridin (quinoin)-1(4)-di-ium-iodide(ethiodide) salts]. Such heterocyclic precursors and related dyes were identified by elemental and spectral analyses. The absorption spectra properties of such dyes were investigated in 95% Ethanol to attempt and throw some light on the influence of such new heterocyclic nuclei and to compare or evaluate spectral behaviors. The absorption spectra of dyes in different pure solvents were examined in the visible region showing solvatochromism and the colour changes of dyes with solvents having different polarities. This permits a selection of the optimal solvent (fractional solvent) when such dyes are applied as photosensitizers. The spectral behavior of some selected newly synthesized cyanine dyes is observed in mixed solvents of different polarities and progressively increasing quantities of one solvent over the other were studied and showed an increase in the absorbance of CT band with increasing proportion of that solvent. Evidence for hydrogen bond formation between the solute molecules and solvent molecules allows measurement of certain energies such as hydrogen bonding, orientation, and free energies.

关键词： N-Bridgehead Heterocycles Cyanine Dyes Zero/Bis-Zero Methine solvatochromic Behaviours

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The First Hyperpolanzability of 3,5-dimethyl-1-(4-nitrophenyl)-1, 2,4-triazole

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Chinese Science Bulletin 1994年第16期39卷 1339-1342页

作者：叶成相莹许 Institute of Chemistry Academia Sinica Beijing 100080 PRC

Compact and high reliable blue coherent light sources are required for the optical data storage of high density, color image processing and optical *** of the possible approaches is the direct frequency doubling of the near infrared semiconductor laser by optical waveguide techniques. So a material applied to the second harmonic generation (SHG) must not only have high molecular hyperpolarizability (β) but also have complete transparency at both the

关键词： first Kyperpolarizability 3 5-dimethyl-1-(4-nitrophenyl)-1 2 4-triazole solvatochromic method.

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