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The structure of product was characterized by FT-IR and SEM.
Our research of this paper would be utilized in the aspect of studying the relationship between the structure of xylan derivatives and anti-biological activities.
Structure Analysis IR analysis of Product.
The change of granular structure could be attributed to the esterification, which disrupted the original structure of bagasse xylan by breaking the hydrogen bonds of molecules[17~19].
Maryam: Food Chemistry Vol. 138(2013), p. 1028-1033

Chiral Discrimination of the Diastereomeric Salts with (R)-Nipecotic acid and Tartaric acid Derivative SUN Xiaoxia1,a*，LI Yingchun1,b, ZHUANG Xiaoxiao1,c, HU Yu2,d* 1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People’s Republic of China 2Experimental Chemistry Center, Nanchang University, Nanchang 330031, Jiangxi Province, China asunxiaoxia77@126.com; blyc8751902@163.com; czhuangxiaoxiao1987@163.com; dhuyu@ncu.edu.cn Keywords: (R)-nipecotic acid; resolution; Molecular complex; molecular recognition; self-assembly Abstract: An effective resolving agent, (D)-dibenzoyl tartaric acid (2b), was screened to yield direct resolution of (S)- ethyl nipecotate (1) with high optical purity and yield.
The less-soluble salt formed a supra molecular structure by enantio differentiating self-assembly.
From the different absorptions of the two diastereomeric salts, we can infer the difference of the two salts in the structure is also relatively large, so two diastereomeric salts have great different solubility.
It is interesting that the less-soluble salt form well defined, and extremely ordered supramolecular structures via hydrogen bonded networks.
The structures were solved with direct methods by using SHELXL-97 and refined by full-matrix least-square calculation on F∧2∧ with SHELXL-97.

Close and others believe that coal reservoir is double structure system [2], which is composed by pores and fractures.
Distribution of pore structure of coal reservoir determines the gas reservoir state and diffusion way in coal, and fracture system distribution controls the migration of gas and mass transfer movement in coal.
The structure and properties of porous materials, (Butterworth, London 1958) [8] X.M Meng: Study on the pore structure of coals and characteristics of gases adsorption on coal, Shandong University of Science and Technology, Qingdao (2007) [9] E.
Halenda: Journal of American Chemistry Society, Vol. 73(1951), p. 373 [10] S.S.
Wu: Applied Physical Chemistry, (Higher Education Press, Beijing 1993) [11] Hiemenz P C: Colloid and Surface Chemistry Principle, translate by Z.K Zhou, J.M MA, (Peking University Press, Beijing 1986)

The structure and morphology analyses of powders were carried out with x-ray diffraction.
Thus, suitable bulk and surface properties, and energy structure are required for photocatalysts.
Robertson: the hand book of environmental chemistry, environmental photochemistry part 2( Springer-Verlag Berlin Heidelberg, 2005)
Hirakawa et al.: Journal of Photochemistry and Photobiology A: Chemistry Vol. 190 (2007) P. 58
Dushkin: Materials Chemistry and Physics Vol. 106 (2007) P.187

The results showed that the structure of carbon was amorphous, and content of 51% ̶ 71%, powder density of 0.42g/cm3 ̶ 0.71g/cm3.
The structure of a fuel cell, consist of electrolyte membranes and electrodes [9].
The structure of cell is in form of a lamina composite as shown in the Figure 1, 2.
[11] Euro Sjostrom “Wood Chemistry, Fundamentals and Applications”, Lab.
Of wood Chemistry, Porest Product Dep., Helsinki Univ.of Tech., Espoo, Finland, Academic Press, (1993).

Amide surfactants have modified structures with lipophilic groups connecting hydrophilic groups through amido bond.
Surfactants are widely used in many industries like food, chemistry, drug, paper manufacturing, leather and fur making, materials, environmental protection and textiles as important functional fine chemicals to improve process, efficiency, product quality, and to save energy because of their unique chemical nature at interfaces.
N-acyl amino acids surfactants are a type of amide surfactants made from modifying the structure of soap.
In order to obtain better properties of the cationic surfactants, new structure of the quaternary ammonium salts containing amide groups were synthesized by the use of dimethyl carbonate.
Structure –function relationship of acyl amino acid surfactants: surface active and antimicrobial properties, J.

TEM images show spherical nanoparticles with nanophase separation within their structure.
Makino Enzymatic polymer synthesis: an opportunity for green polymer chemistry.
Royal Society of Chemistry, Cambridge, p 192(2010)
Kressler Formation of structured polygonal nanoparticles by phase-separated comb-like polymers.
McConnell Structures and Transitions in Lipid Monolayers at the Air-Water Interface.

The optimized structure for pristine TiO2 was show in Fig. 1.
Results and Discussion Band structures of doped TiO2.
Xing: Journal of Materials Chemistry, Vol. 22 (2012), pp.19718-19725
Macyk: Coordination Chemistry Reviews, Vol. 257 (2013), pp.767-775
Giamello: The Journal of Physical Chemistry C, Vol. 116 (2012), pp.20887-20894

The scheme relies on the use of membranes formed by graphene plates containing calibrated pores in the crystalline structure.
We provide the description scheme and the technology for calculating interaction between gas environment molecules and nanosized molecular structures.
Interaction with the structure, in turn, is described according to the law of action independence as the sum of impacts produced by each molecule of the structure onto the given test molecule.
Depending on what kind of pores (defects) the considered structure has, it can be used as a filter for various components of gas mixtures.
Schwerdtfeger, Helium tunnelling through nitrogen-functionalized graphene pores: Pressure- and temperature-driven approaches to isotope separation, Journal of Physical Chemistry C. 116 (19) (2012) 10819-10827

Wertz, Ionic liquids: A most promising research field in solution chemistry and thermodynamics, Pure Appl.
Equilibrium Solvation Structure and Free Energetics, J.
Senapati, Structure and dynamics of acetate anion-based ionic liquids from molecular dynamics study, Chem.
Horne (Ed.), Structure and Transport Process in Water and Aqueous Solutions, John Wiley, NY, 1972, pp. 519–564 (Chapter 13)
Owen, The Physical Chemistry of Electrolyte Solutions, ACS, New York, 1958.