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Since the bridging stability of hydrogen bond is weak, if the concentration of solution is low, some ingredient complexes may segregate from the gel network structure before the process of self-combustion, then the purity and crystallinity of Bi-2212 phase may be deteriorated.
Azhan:Materials Chemistry and Physics Vol. 61 (1999), p.251 [4] N.

The Effect of Alkaline Earth Metal and Carboxylate Derivatives on the Luminescence of Quinaldine Acid Zn (II) Complex Material Xi-Shi Tai 1, a 1 College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, P.R.
Aghabozorg et al. reported the crystal structure of pyridine-2, 6-dicarboxylic acid Pb (II) complex [4].

Experimental section 1.1 The preparation of experimental materials and test-pieces With the imitation of the essential geometric characteristics of biological non-smooth surface and selection of the simple non-smooth unit body structure of biological surface，a non-smooth treatment is performed on the materials through laser and the evenly spaced striated non-smooth units were formed on the test-piece to obtain a non-smooth surface test specimen with striated non-smooth biological surface.
Physical Chemistry of Surface [M].London: Wiley,1990

Synthesis and Application of 1-[2-methyl-5-phenyl-3-thiophene]-2-[2-methyl-5- phenyl-(4- vinyl)-3- thiophene]perfluorocyclopentene Yinglong Fu, Xue Li and Gang Liu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structures of diarylethene 1o were confirmed by NMR. 1H NMR(400 MHz, CDCl3, ppm):δ 1.48 (s, 3H, -CH3), 1.97 (s, 3H, -CH3), 7.29 (s, 1H, thiophene-H), 7.36 (s, 1H, benzene-H), 7.42 (d, 1H, J = 8.0 Hz, benzene-H), 6.65 (t, 1H, vinyl-H), 5.57 (d, 2H, vinyl-H), 5.52 (d, 2H, vinyl-H).

Synthesis of Spherical Assembly Composed of MnO2 Nanoparticles Using Spent Zn-Mn Batteries Ming Yang*, Guanliu Zhang, Pengfei Li, Xiaoying Li, Cheng Chen School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, ChangQing Garden, Hankou, Wuhan, 430023, P.
The SEM image exhibits a clear assembly composed of MnO2 nanoparticles structure on the spherical surface.

A Photochromic Diarylethene with Five and Six-membered Aryl Units Zhipeng Tong, Shouzhi Pu * and Shiqiang Cui Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.R.China pushouzhi@tsinghua.org.cn Keywords: Diarylethene, Synthesis, Photochromism, Fluorescence.
The structure of compound 1a was confirmed by 1H NMR(400 MHz, CDCl3): δ 1.88 (s , 3H, -CH3), 2.41 (s , 3H, -CH3), 2.46 (s, 3H, -CH3), 6.66 (s, 1H, thiophene-H), 7.12 (m, 3H, phenyl-H), 7.26 (d, 1H, phenyl-H), 7.35 (d, 2H, phenyl-H).

Functionalization of Multi-walled Carbon Nanotubes Via UV/O3 and Silane Treatments Peng Cheng MA1 , Jang-Kyo KIM 2 and Ben Zhong TANG3 1, 2 Department of Mechanical Engineering and 3 Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong, China 1 mapc@ust.hk, 2 mejkkim@ust.hk, 3 tangbenz@ust.hk.
FT-IR and TEM were used to characterize the changes in chemical structure and surface morphology of the MWCNTs.

The ordering phases with L12 structure are formed randomly during the precipitation process of Ni-14at.
Beijing: Chemistry industry press,(2002) (in Chinese) [5] A.G.Khachatuyran, Theory of Structural Transformations in Solids[M].

Study on Photochromic Compounds with Synthesis Photochromic Diarylethenes based on Five-membered Heterocycle and Benzenze Ring Panpan Ren, Renjie Wang and Shouzhi Pu* Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structure of compound 1o was confirmed by 1H NMR spectroscopy. 1H NMR (400 MHz, CDCl3, ppm): δ2.04 (s, 3H, -CH3), 2.35 (s, 3H, -CH3), 6.95(s, 1H, thienyl-H), 7.25 (d, 2H, benzene-H, J = 8.0 Hz), 7.32 (d, 2H, benzene-H, J = 8.0 Hz), 9.86 (s, 1H, -CHO).

[7]Xiao Zhenyu, Yuan Xubo, Sheng Jing, Modified Property of Chitin and Chitosan[J], Guangzhou Chemistry, Page27(2):60-64, 2002
[8]Yu Meijuan, Meng Qinghua, Zhen Yining, A Study on Novel Fluorescent Probe Containing Rhodamine Structure (Ⅰ)——Tautomerism and Spectroscopic Characteristic [J]s, Dyestuffs and Coloration, Page 41(4):187-190, 2004