Search results

Study on Photochromic Materials of 1-(2- benzyl)-2-[2-methyl-5-(10-phen -anthrenyl)-3-thienyl]Perfluorocyclopentene Junjie Song, Xue Li, Gang Liu* Jiangxi Key Lab of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China liugang0926@163.com Keywords: benzene; phenanthrene; photochromism; fluorescence.
The structures of diarylethenes 1a were confirmed by 1H NMR (400 MHz, CDCl3, TMS): δ 2.33 (s, 3H, -CH3), 2.47 (s, 3H, -CH3), 6.87 (s, 1H, thiophene-H), 7.59 (s, 1H, phenanthrene-H ), 7.61 (t, 2H, phenanthrene-H), 7.68 (t, 2H, phenanthrene-H), 7.81–7.83 (d, 2H, phenanthrene-H), 8.74–8.79 (d, 2H, phenanthrene-H), 7.10–7.13 (t, 2H, benzene-H), 7.22–7.24 (d, 1H, benzene-H), 7.07–7.09 (d, 1H, benzene-H).

The other vibrations indicative of the MEH-PPV structure were the 857 cm−1 out-of-plane phenyl CH wag, the 1374 cm−1 symmetric alkyl CH2, and the 1462 cm−1 asymmetric alkyl CH2.
Yang , Chinese Journal of Chemistry, 22 (2004) 80

Synthesizes and Properties of a Novel Unsymmetrical Photochromic Diarylethene Material Zhiyuan Sun, Hui Li and Shouzhi Pu* Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University Nanchang 330013, P.
Synthetic route for the compound 1a The structure of 1a was characterized by 1H NMR. 1H NMR (400 MHz, CDCl3, ppm): δ 2.09 (s, 3H, -CH3), 3.75 (d, 3H, -OCH3), 4.01 (s, 3H, -OCH3), 7.39 (t, 3H), 8.34 (d, 1H, pyrimidine-H), 8.60 (d, 2H, pyridine-H).

After nearly 60 years of development, the current guiding methods of the AGV mainly include the light/chemistry/magnetic guiding, laser guiding and visual guiding and so on.
The system can filter out most of vibrations and interferences caused by the travelling of the vehicle, make corresponding compensation within the allowable range of the longitudinal and horizontal angle change of the mechanical structure, making the video images remain stable.

Effect of MgO on the crystal structure and alumina leaching property of 12CaO·7Al2O3 [J].
The quaternary phase in high alumina cement [C]// proceedings of the The 3rd International Congress on the Chemistry of Cement: Cement and Concrete Association, 1954:485-489

On the other hand, the bearings can work under hydrodynamic lubrication by reasonable structure design.
Anisimov: Polymeric materials for water-lubricated plain bearings, Russian Journal of Applied Chemistry Vol. 79 (2006), p. 695

To predict the foam motion in porous media, the complexity of pore structures must be considered.
Radke, Fundamentals of Foam Transport in Porous Media, in Foams: Fundamentals and Applications in the Petroleum Industry, ACS Advances in Chemistry Series, N. 242, American Chemical Society, Washington D.C., 1994

An Environmentally Friendly Technology for Biomass Production Hydorchar from Renewable Resources Yan-Qiu Lei1,2 a, and Hai-Quan Su*2, b 1 College of Life Sciences , Inner Mongolia University Hohhot 010021, China 010021, China 2 College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot a yyj6607@sohu.com, bhaiquansu@yahoo.com Keywords: hydrothermal carbonization ,cornstalk,adsorption Abstract: A green and sustainable route for preparation of hydrochars from cornstalk by hydrothermal carbonization (200℃) was described.
When we continued to increase the reaction time from 26h to 34h, we could always observe three morphology: some part of the original structure scaffold of lignocellulosic biomass was almost all disrupted, and formed a complex interconnected porous and channels networks, the other part of lignocellulosic biomass were covered by a large number of nicely dispersed, separated microsphere on the surface of the cornstalk matrix, additionally, the amount of scattered spheres increased as the reaction time increased, but, the size of spheres were about 4-5 μm range in diameter.

One of the most necessary product is self-cleaning textiles which has hydrophobic property produced by appplying an approach from nature phenomenon, for instance, mimicking lotus or taro leaf structure [3,4].
Lewin (Ed), Handbook of Fiber Chemistry, CRC Press, Boca Raton, 2007

Composite structures. 63 (2004) 305-312 [4] N.Chand and B.D.Jihod.
Anal: Journal of Environment Chemistry, Vol. 2 (2010), p. 44-50 [7] A.Z.Romli: The Preparation and Characteristics of Chicken Feather/ Epoxy Composite (Ph.D. thesis, Universiti Teknologi MARA, Malaysia 2011) [8] S.M.L.Rosa, E.F.Santos, C.A.Ferreira and S.M.B.Nachtigall: Journal of Materials, Vol. 12 (2009) No. 8, p. 333