- Detection of explosive vapors with a charge transfer molecule: Self-assembly assisted morphology tuning and enhancement in sensing efficiency
-
Use of a fluorescent organic molecule consisting of binaphthyl functionalized with donor-acceptor substituted stilbenes for the detection of dinitrotoluene (DNT) and trinitrotoluene (TNT) vapors and enhancement in its sensing efficiency via self-assembly assisted morphology tuning are described. The Royal Society of Chemistry 2010.
- Vijayakumar, Chakkooth,Tobin, Gerard,Schmitt, Wolfgang,Kim, Mi-Jeong,Takeuchi, Masayuki
-
supporting information; scheme or table
p. 874 - 876
(2010/06/12)
-
- Synthesis, spectroscopy and photochemistry of novel branched fluorescent nitro-stilbene derivatives with benzopheonone groups
-
In this article, we presented novel nitro-stilbene derivatives with one or two benzophenone groups as photoinitiators via multi-steps synthesis. The ultraviolet/visible spectroscopy and the emission spectroscopy of the compounds were determined in various solvents. The results showed that the ultraviolet/visible absorption spectroscopy of the derivatives with benzophenone moiety displayed overlap effects of nitro-stilbene and benzophenone parts. In non-polar solvents, the derivatives exhibited strong emission, while they displayed weak emission in modest and strong polar solvents. Dyes-linked benzopheonone groups displayed stronger fluorescence emission than simple chromophore parent molecules. Visible-light photoinitiating effects of the derivatives were investigated extensively. Methyl methacrylate could be photoinitiated efficiently by the derivatives with benzophenone moieties at very low concentration, even at 1×10-5 mol/ L. While the photopolymerization efficiency of styrene initiated by the derivatives was lower than that of methyl methacrylate. Our results showed that the dye-linked photoinitators had more efficient photoinitiating than the simple mixture of dye and photoinitator. Furthermore, the derivative with two benzophenone groups displayed more excellent phototiniatiating effects than the derivative with one benzophenone group. Thermodynamics driving for the occurrence of visible-light photoinduced intramolecular electron transfer from chromophore part to benzophenone part was evaluated. Benzopinacol moiety produced in photoreaction was confirmed by nuclear magnetic resonant spectroscopy. Thermal stability of the derivatives was analyzed. Springer Science+Business Media, LLC 2010.
- Gao, Fang,Liu, Jian,Peng, Huayong,Hu, Nvdan,Li, Hongru,Zhang, Shengtao
-
scheme or table
p. 703 - 712
(2011/10/31)
-
- Synthesis of a thiophene-based nonlinear optical chromophore
-
This report details an eight-step synthesis of the thiophene-type nonlinear optical chromophore 1 in 38% overall yield. Only one early step required chromatography. Copyright Taylor & Francis Group, LLC.
- Davis, Matthew C.,Hollins, Richard A.,Douglas, Brad
-
p. 3515 - 3523
(2007/10/03)
-
- Synthesis of an isophorone-based nonlinear optical chromophore
-
The synthesis of a "CLD-type" nonlinear optical chromophore incorporating the isophorone unit to rigidize the polyene segment is described. The synthesis required seven steps with an overall yield of 17%.
- Davis, Matthew C.,Chafin, Andrew P.,Hollins, Richard A.,Baldwin, Lawrence C.,Erickson, Eric D.,Zarras, Peter,Drury, Elliott C.
-
p. 3419 - 3429
(2007/10/03)
-
- Image-formation material and infrared absorber
-
A heat mode-applicable image-formation material having high sensitivity and excellent image-forming property, and a novel infrared absorber which can be suitably used in this material. The present invention relates to a substrate carrying thereon an image-formation layer which contains an infrared absorption agent. The agent has at least one surface orientation group in the molecule, and solubility of the image-formation layer in an alkaline aqueous solution is changed by action of radiation in the near-infrared range. Preferable as the infrared absorbing agent is an infrared absorber comprising, in a molecule thereof, a fluorine-containing substituent which have at least 5 fluorine atoms, or a polymethine chain of at least 5 carbon atoms and an alkyl group of at least 8 carbon atoms, said alkyl group being connected to the polymethine chain via any of nitrogen, oxygen and sulfur.
- -
-
-