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Synthesis of Three Novel Aromatic Biazomethine Liquid- Crystalline Epoxy Resins and Curing Reaction with Aromatic Diamine Jungang Gao1,a, Xiaona Zhang1,2,b, Yonggang Du1, c 1College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China 2Hebei Chenyang Industrial CO., Hebei Xushui, 07100, China agaojg@hbu.edu.cn ; bzhangxiaonaz@163.com; cdyg2166@sina.com Keywords: liquid crystal; epoxy resins; aromatic diamine; curing reaction Abstract: Three class of novel liquid crystalline epoxy resins containing azomething groups: N,N’-Bis[4-(2,3-epoxypropoxy)benzylidene]-4,4-diamino-diphenyl ether (p-BEPBDDE), N,N’-Bis[4-(2,3-epoxypropoxy)benzylidene]-4,4-diamino-diphenyl methane (p-BEPBDDM) and N,N’-Bis[(4-(2,3-epoxypropoxy)-benzyliden)-1,4- phenylene diamine] (p-BEPBPD) were synthesized and characterized.
In this works, three kinds of aromatic biazomethine liquid-crystalline diglycidyl ethers from 4,4-diaminodiphenyl ether (DDE), 4,4-diaminodiphenyl methane (DDM) and p-Phenylene diamine were synthesized and molecular structures and physical properties were characterized by 1HNMR, FTIR, DSC, POM and XRD.
Characterization: Fourier transform infrared spectrophotography (FTIR FTS-40, Bio-Rad, USA) was used to determine the structure of the liquid crystalline compounds (KBr plate method).
Schem.1.The synthesis routes and molecular structure of A2, B2 and C2 Synthesis of N,N’-Bis[4-(2,3-epoxypropoxy)benzylidene]-4,4-diamino-diphenyl ether (p-BEBDDE, A2): A mixture of 4,4-diaminodiphenyl ether and 4-Hydroxybenzaldehyde in a molar ratio of 1:2 was dissolved in N,N’-dimethylformamide and heated at reflux temperature for 24h.

Pearce5,e 1Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand 2School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Bangkok, 10140, Thailand 3Faculty of Gemological Science and Applied Art, Rambhai Barni Rajabhat University, Chanthaburi, 22000, Thailand 4Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand 5Panyapiwat Institute of Management, Nonthaburi, 11120, Thailand a*ampornw@nu.ac.th, bnapachat.tar@gmail.com, csuttawani@gmail.com dtchairuangsri@gmail.com, ejthp70@gmail.com Keywords: High chromium cast iron, molybdenum, heat treatment, corrosion.
After destabilisation and air hardening, the structures contained secondary carbides within martensitic matrices (Fig. 2).
g M7C3 M6C g M7C3 M6C g M7C3 Fe Cr c d b 10mm 10mm 10mm 10mm 10mm 10mm a Figure 1 (a-c) SEM-BEIs show the as-cast microstructure in the reference iron (R), Mo1 and Mo6 irons, respectively (d) EDS spectrum from the Mo-rich lamellar structure in Mo6 iron.
a M7C3 SC within a¢ 5mm 5mm SC SC M7C3 M7C3 c 20mm M7C3 M6C SC within a¢ 20mm b d Figure 2 SEM-BEIs show the secondary carbide (SC) precipitates within martensite (a¢) matrix after destabilisation (a-b) the reference iron (R) and (c-d) Mo6 iron (Denoted, b and d were deep etched structure after removal the martensite matrix).

Photochemistry Properties of a Novel Photochromic Diarylethene Derivative Xiaoting Li, Hui Li, Shouzhi Pu* Jiangxi Key Laboratory of Organic Chemistry,Jiangxi Science and Technology Normal University Nanchang 330013, P.R.
Introduction Photochromism is a reversible transformation induced by photoirradiation between two forms with different chemical structures [1, 2].
The different chemical structures may cause changes of various physicochemical properties, such as absorption, emission and redox potential.
The structure of diarylethene 1o was confirmed by NMR; 1H NMR (400 MHz, CDCl3, TMS): δ 1.98 (s, 3H, –CH3), 2.31 (s, 3H, –CH3), 2.68 (s, 3H, –CH3), 7.11–7.13 (d, 1H, J = 8.0 Hz, benzene–H), 7.22 (s, 1H, thiophene–H),7.27–7.29 (d, 1H, J = 8.0 Hz, benzene–H), 7.33–7.35 (d, 2H, J = 8.0 Hz, benzene–H).

The adhesive tape showed positive results in the holding the structure of the sample, however, not all concentrations of NPCC provided acceptable results.
XRD was used to characterize the crystallographic structures of PP and the PP-NPCC composites.
As shown in Figure 2, all the samples showed crystalline structures.
[4] Laura D.M., Keskkula H., Barlow J.W. and Paul D.R., Effect of glass fiber surface chemistry on the mechanical properties of glass fiber reinforced, rubber-toughened nylon 6. 

Results and discussion The proton conductivity of sulfonated polysulfone (PSUs) depends on its ion exchange capacity (IEC), i.e. the amount of sulfonic acid groups grafted on its structure.
Indeed, Tg and Td of PSUs are increasing with IEC, due to the interaction occurring between the ionic groups and the chemical structure of the polymer [8,9,10].
A removable plasticizer, like polyethylenglycol (PEG), has been chosen, mainly because once removed, no change in the chemistry of the membrane can occur.
More developments on the chemical structure of the polymer are still necessary to improve significantly the resistance of the material in a fuel cell environment.

Introduction Determining nanometric local work function is very important to relate between the macroscopic properties of semiconducting [1] and optoelectronic [2] materials to their microscopic structures.
Very recently, KPFM has been employed in a variety of samples such as semiconductor structures, heterojunction and biological samples.
Results and Discussion All tips were calibrated with HOPG which is well-known that it has stable surface structures and clean surfaces when it is freshly exposed by detaching the upper layer with the Scotch tape.
Lide: Handbook of Chemistry and Physics, (CRC Press, FL, 1995)

The diffractogram of the clay without treatment (MMT) shows characteristic peaks of bentonite containing accessory materials, such as quartz (Q) in the range of 22-30°, which occurs for all samples, and also a band at approximately 7.0° indicates the basal interplanar distance d001 of 12.63 Å, that is characteristic of montmorillonites containing Na+ ions in the structure with a small hydration (13).
These results can indicate that all systems exhibit exfoliated structure and / or partially exfoliated one, which it is in agreement with other findings in the literature (2,15-16).
The X-ray diffraction indicated the organophilization of bentonite clay and also the disappearance of the peak when incorporating organoclay in the polymer matrix, indicating that all systems showed predominantly exfoliated structure, as confirmed by TEM.
Adsorption of quaternary ammonium salts on montmorilonite, Journal of Physical and Chemistry of Solids, vol. 65, p. 441 (2004)

With the wide application of micro-structure devices in biomedicine, precision instruments, optical fiber communication, aerospace and other fields, its processing technology has received more and more attention [2].
At present, there are many methods to fabricate micron-scale structures.
By changing the structure, type and mass fraction of the three basic components in the UV-curable material system, the performance requirements in different application fields can be satisfied.
Chinese Journal of Analytical Chemistry, 2015, 43(2):300-309

FPGA internal resources utilization and performance Factor Built-in FIFO buffer data method External SRAM as a FIFO buffer method simultaneous read and write speed [ns] 15 50 storage capacity [bit] 8K×16 1024K×16 Used FPGA logic unit 162 204 FPGA storage unit [bit] 8K×16 0 Used PLL in FPGA 0 1 Time of buffering data [ms] (200ksps sampling rate) 40 5000 As shown in table 1, the method which has used FPGA internal static RAM units as the built-in FIFO memory, has lightweight structure of the programming, and has the advantage on high-speed of simultaneously reading and writing.
The system which uses FPGA internal RAM units as built-in FIFO memory, has lightweight structure, and supports high-speed of simultaneously reading and writing.
MRFA MS obtained on a spec-LC-T Conclusion Compared with the method of using external SRAM as a FIFO buffer, the method of built-in FIFO memory has lightweight structure, and it is more conducive to rapid development.
Analytical chemistry, Vol. 78, No.1, pp 44-51

Preparation and Characterization of N-butyl Pyridine Nitrate Peng Tian1,a*, Zhigang Zhao2,b*, Yangyang Song1,a, Bo Meng1,a, Tianling Qin1,a, and TingTing Zhu1,a 1College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China 2Fundamental Education Division of Computer and Mathematics, Shenyang Normal University, Shenyang 110034, China aemail: tianpenglnu@sina.com, bemail: zhigangzhao@sina.com Keywords: BPC-NO3, ionic liquids, UV–spectrum, IR–spectrum Abstract: The halogenated hydrocarbon and pyridine are used in the synthesis of room temperature ionic liquid intermediates chlorinated N-butyl pyridine BPC.
We use infrared spectrometer for the structure characterization, it is proved that we have gotten BP-NO3 room temperature ionic liquids.
Using nuclear magnetic resonance (NMR) technology can determine the mixture ionic liquid or other components of the chemical shift, [12-13] coupling constant[14], relaxation time waiting for structure or mechanical information[15], obtain ionic liquid of anion and cation and the interaction between the them and molecular solvent interaction information[16].
We use infrared spectrometer for the structure characterization, it is proved that we have gotten BP-NO3 room temperature ionic liquids.