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The morphology of prepared La2S3 transforms from irregular shapes to quasi-sphere structure.
From the high magnification image inset Fig. 2a, we can find that the as-prepared La2S3 microcrystalline is composed of a large number of flakes-like structure.
When the S/La molar ratio is 6/6, the quasi-sphere structure morphology of the as-prepared La2S3 microcrystalline can be found.
The corresponding morphology of the prepared La2S3 transforms from irregular shapes to quasi-sphere structure.
The as-prepared La2S3 microcrystalline is found to be assembled by a large number of flake-like structure.

The structure, morphology, particle size, and particle size distribution ranges of PbS were characterized by XRD, FE-SEM, and laser particle size analyzer, respectively.
In recent years, semiconductor nanoparticles have attracted worldwide attention as burgeoning and intercrossing research areas of chemistry, physics and material sciences [3-6].
Characterizations of structure, morphology and particle size distribution of PbS nanocrystals.
The structure of PbS nanocrystals is given in Fig.2.
PbS nanocrystals have an average particle size of 69 nm with a narrow particle size distribution and cubic crystal structure.

A Dendronized Cellulose Derivative and Its Thermotropic Liquid Crystal and Lyotropic Cholesteric Liquid Crystal Behaviors Yanming Dong1,a, Yaqing Zhao2,b, Erman Zeng1,c,Liulin Yang2,d, Qiang Ge2,e, Xiaolan Hu1,h 1Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China, 2 College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China aymdong@xmu.edu.cn, byqzhaoxm@163.com, czengerman@163.com, dallanceyang@yahoo.com.cn, eshaanxiren_gq@yahoo.com.cn, hxlhu@xmu.edu.cn Keywords: dendronized cellulose, thermotropic liquid crystal, lyotropic liquid crystal Abstract.
The structure of EC-g-DOBOB was investigated by means of FTIR, Both thermotropic liquid crystal and lyotropic liquid crystal behaviors of EC-g-DOBOB were studied by combination of DSC, POM and XRD.
Results and discussion Structure characterization of EC-g-DOBOB.
The structure of EC-g-DOBOB has been confirmed by FTIR and 1HNMR.
In FTIR results, compared with raw material EC, the structure of EC-g-DOBOB was verified by 1722 cm-1 (the esterified carboxylic groups, -COOR), 3039 cm-1 stretching vibrations of the C-H on benzene, 1511 and 1610 cm-1 vibrations of backbone of benzene ring, and 822 cm-1 out-of-plane bending vibrations of C-H on benzene.

X-ray diffraction analysis showed that all the films were single perovskite structure and a phase transition appeared in Nd–Mn codoped BiFeO3 thin films.
Finally, the films were annealed at 600 ℃ for 30 min in Ar. 1.2 Experimental methods The structure of BFO and BNFM thin films were measured by using RIGAKU, D-MAX 2200 VPC X-ray diffractometer equipped with a Cu-Ka (λ=1.540562 Å) source.
The XRD results reveal that both films are polycrystalline with a perovskite structure.
Also the peaks of the pure BFO thin films agree well with the distorted rhombohedral R3c structure.
Takoudis: Coordination Chemistry Reviews Vol.253(2009) p. 2920 [5] J.Z.

Anodic Oxidized Titania Nanotubes as Drug Delivery Dan Maoa, Xiufeng Xiao*,b, Chunyan Wangc Haizhen Tangd and Rongfang Liue College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, P.
To achieve local drug delivery, anodized titanium with nanotube layer structures were loaded with ibuprofen(IBU) using a vacuum drying method in which drug molecules were tiled on the anodized titanium to dry in vacuum drying oven.
Due to their hollow structure, the titania nanotube arrays were used as drug delivery.
In order to convert the phase of titanium to anatase structure, the sample was annealed at 450℃ for 2hours in air with a heating rate of 5℃ per minute.
It was shown that nanotubes structures neatly and uniformly arranged over the anodized titanium surface in Fig.1(a).

Synthesis and properties of a novel conducting hydrogel with enhanced mechanical properties SHI Zhan1,a, ZHU Anfeng1,2,b, JIN Junhong1,c, LI Guang1, JIANG Jianming1 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China 2Key Laboratory for Chemistry of Low-Dimensional Materials, Jiangsu Province, Huaiyin Normal University, Huaian, 223300, China asean_shi@yahoo.cn, bzhufeng7810@126.com, cjhkin@dhu.edu.cn Key words: hydrogels, MWNT, clay, mechanical properties, electrical properties Abstract.
The chemical structure of the gels was characterized by Fourier transform infrared spectroscopy (FTIR).
Introduction Hydrogel, defined as three-dimensional network structures with a significant amount of water or biological fluids, has attracted great interests not only in the theoretical study but also in potential application [1].
The chemical structure, volume phase transition temperature (VPTT), mechanical properties, and conductivity of obtained hydrogels were investigated by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), mechanical strength test, and conductivity measurement.
The chemical structure of the NC hydrogels was identified by FTIR, as shown in Figure 1.

Pereira2,5, Andrivo Rusydi2,3,4,b   1Jurusan Fisika,FMIPA, Universitas Gadjah Mada, BLS 21 Yogyakarta 55281, Indonesia 2Department of Physics, National University of Singapore, Singapore 117542 3NUSNNI-NanoCore, National University of Singapore, Singapore 117576 4Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore 117603, Singapore 5Graphene Research Centre, Faculty of Science, National University of Singapore, Singapore 117546 6Department of Chemistry, National University of Singapore, Singapore 117543 aiman.santoso@ugm.ac.id (corresponding author), bphyandri@nus.edu.sg Keywords: graphene, optical absorption, disorder, interactions, spectroscopic ellipsometry.
Quantity A0 (given by pa and a is the fine structure constant) denotes constant absorption and relates to universal optical conductivity s0.
In addition the interplay between electron-electron (e-e) and electron-hole (e-h) interactions yields unique excitonic effects that renormalize the bare band structure saddle point resonance by ~0.6 eV.
Absorption spectra of pristine and oxygen plasma exposed CVD graphene extracted from spectroscopic ellipsometry measurements. pa denotes constant absorption and relates to universal optical conductivity s0 and a is the fine structure constant.
As can be seen from Figure 1, the two main effects of oxygen exposure are: (1) a significant reduction (more than 50 %) of the van Hove singularity (vHS) peak intensity at 4.64 eV in the ultraviolet (UV) range, accompanied by a large blue-shift of the peak position; (2) Constant absorption, A0 (given by pa whereas a is the fine structure constant), gradually suppressed to zero in a step-like fashion as ts increases in the near infrared (NIR) range.

Synthesis and Thermal-Optic Properties of Azo Polyurethane Containing Chiral Unit Feng-xian Qiu a, Qing Wang, Cai-hong Chen, Hao Zhao, Jin-hua Liu and Dong-ya Yang School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China a fxqiuchem@163.com Keywords: Azobenzene polyurethane; Refractive index; Dielectric constant Abstract.
The chemical structures of CAAPM and PU were characterized by FT-IR and UV-Vis spectroscopy.
The chemical structures were characterized.
The result indicated that the diazo coupling reaction was successful, and the structure of the azobenzene was constructed and the absorption peak had blue shift after polymerization.
The chemical structures of CAAPM and PU were characterized by FT-IR and UV-Vis spectroscopy.

Effects of 0.03MF2 – 0.12LiF (M = Ca, Sr, Ba) on the Sintering and Dielectric Properties of SrTiO3 Ceramics Laldja Taïbi-Benziada1,a, Hassiba Kermoun2,b and Yasmina Belaroussi3,c 1Faculty of Chemistry, USTHB, P.O.
Box 32, El-Alia, 16311 Bab-Ezzouar, Algiers, Algeria 2Faculty of Chemistry, USTHB, P.O.
The patterns of all fluoridated samples are similar to each other and show each sample to be a single phase with a complex perovskite structure.
Yao, Dielectric nonlinear properties of BaTiO3 – CaTiO3 – SrTiO3 ceramics near the solubility limit, Materials Chemistry and Physics 112 (2008) 675 – 678
Scott, New developments on FRAMs: [3D] structures and all-perovskite FETs, Mater.

The work has been extended to non-similar cases using one-step finite rate chemistry in laminar [22] and turbulent [23] flows using the boundary layer approximation.
The present project proposes a critical step forward, under a more structured and combined approach.
The selection of the combustion model, including complex chemistry, will be a matter of careful consideration, since most usual combustion models have been developed and validated on less demanding, lower speed, longer residence times reactive flows.
Furthermore, both the experimental and the numerical data will be analyzed using state-of-the-art modal decomposition, not only considering the mean and fluctuation but also identifying the coherent structures and organized structures contributing to mixing, stabilization or local extinction.
Ignition and Structure of a Laminar Diffusion Flame in a Compressible Mixing Layer with Finite Rate Chemistry, Physics of Fluids A, 3: 3087-3097, 1991 [17] Jackson T.L., Hussaini M.Y., An Asymptotic Analysis of Supersonic Reacting Mixing Layers, Combustion Science and Technology, 57: 129, 1988 [18] Im H.G., Chao B.H., Bechtold J.K., Law C.K.