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Showing 1 to 20 of 45 for “"photochromic"”.
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Photochromic textiles
… between the developed colour intensity of photochromic textiles and the time of UV exposure and also the time of relaxation. As a result of this relationship the potential of flexible textilebased sensor constructions which might be used for the identification of radiation intensity is …
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High-Pressure Studies of Photochromic Spiropyrans
Made available in DSpace on 2014-12-13T18:55:31Z (GMT). No. of bitstreams: 1 7607014.pdf: 3304315 bytes, checksum: f23115bfd413f87b46c5717dc6f18880 (MD5) Previous issue date: 1975
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Photochromic Molecular Materials for the Controlled Organization of Nanoparticles
… of azo nano objects will be discussed, here the photochromic studies showed the azo nanospheres had a larger photochemical conversion then their corresponding thin films. These nanoobjects were then successfully coated with gold nanoparticles by using azo compounds with dithiane or thioacetate …
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Studies on photochromic and potentially mesogenic mercury(II) dithizonates
… ligand. The organomercury(II) dithizonates were photochromic in organic solvents, displaying reversible colour changes from yellow to blue on irradiation with visible light. The visible absorption spectra of these solutions were recorded and appeared to be independent of the nature of the …
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Ferrocenyl derivatives of dithizone : photochromic properties and potential as electrochemical sensors
… first part of this project interactions between photochromic and redox properties were investigated for the new ferrocenylmercury dithizonate complexes (N,S-dithizonato )(ferrocenyl)mercury(II) (11) and (ferrocene-l, 1'- diyl)bis[(N,S-dithizonato)mercury(II)] (12). UV-Vis spectroscopy showed that …
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Developing a Digital-to-Print Fabrication Pipeline for Multi-Color Photochromic 3D Printing
… that enables multi-color resin printing using photochromic dyes. By combining DLP with photochromic materials, our end-to-end 3D printing fabrication pipeline can create multi-colored objects using only one type of resin-based material. Instead of using a standard, single-color resin, our resin …
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Assessment of the accuracy of DFT (Density Functional Theory) for the photochromic behavior of dihydroazulene (DHA)
Efficient utilization of the sun as a renewable and clean energy source is one of the greatest goals and challenges of this century due to the increasing demand for energy and its environmental impact. Photoactive molecules that can store the sun's energy in the form of chemical bonds have been of …
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Auf dem Weg zu photochromen supramolekularen Architekturen : Untersuchungen zu Synthese und Eigenschaften potentieller Bausteine
The synthetic linkage of photochromic moieties to 2,2':6',2''-terpyridine structures is reported in this thesis - the selected photochromic building blocks being anthracene and diarylethenes. The photochromism of the desired functionalised terpyridines was investigated; furthermore the influence of …
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Synthesis and Optical Studies of Organoboron Compounds
… and DFTcalculations.In 2016, Higuchi reported photochromic boronium-bipyridine complexes. It washypothesized that the photochromism arose from radical species that form via the photooxidationof iodide and other anions by the boronium cations. Although EPR data was provided to supportthis …
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Switching hybrid polymers with physically and covalently entrapped organic photochromes
… hybrid polymer coatings for the incorporation of photochromic spirooxazines and chromenes. The development and optimisation of work was performed via two different routes (dye and matrix ones), that led to photochromic multi-layer coating systems with coloration depth and photostabilities …
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The synthesis, photochemistry & electrochemistry of dithienylethene switches & their organometallic complexes
… synthesis, properties and applications. The photochromic and electrochromic effects of functionalising such switching units with metal complexes, is then discussed. Finally, an introduction to cobalt carbonyl complexes is given, with an outline of the photochemical and electrochemical …
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Exotic Monoliths
… modification of organic polymer monoliths with photochromic dyes and the synthesis of monoliths directly from modified photochromic dyes with a polymerisable double bond. A novel application of these photochromic monoliths is their use as photo-switchable electroosmotic pumps allowing eluent …
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Optical absorption of bismuth silicon oxide (Bi₁₂SiO₂₀) crystals
… eV and 2.1 eV, indicating the presence of the photochromic effect and photorefractivity.
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High throughput optical materials
… and characterisation of a range of reversibly photochromic sodalites has been achieved via thermal processing of zeolite A with sodium sulphate and a variety of group I metal salts. All of the sodalites adopt the space group P-43n and were characterised by powder neutron diffraction and …
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(1) Artificial Synovial Fluid and Cartilage. (2) Non-Manumitative GD3+ Hosts as MRI Contrast Agents. (3) Five-Member Heterocycles as Switchable Ferromagnetic Coupling Units. (4) Liquid Crystal Opto-Optical Switch: Non-Destructive Information Retrieval Based on a Photochromic Fulgide as Trigger
Chapter III describes a series of 1,3-, 2,5-, and 2,4-dimethylene five-member heterocycles as new ferromagnetic coupling units. Full geometry optimization of structures with heteroatoms ranging from Be to O and from Mg to S at the CASSCF level with energy calculation at the MCQPDT2 level allowed …
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Amino acid interactions of spiropyran
… experiments were undertaken to document the photochromic interconversion between spiropyran and merocyanine in the presence of these amino acids, compared to a water blank. A kinetics study was then carried out to examine how the rate of decay of the coloured merocyanine back to the closed …
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