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Surface Morphology Variations of Porous Nano-Calcium Phosphate/Poly(L-Lactic Acid) Composites in PBS
Online since: May 2006
Authors: Xu Liang Deng, Xing Gang Liu, Wen Jian Weng, Kui Cheng, Pi Yi Du, Ge Shen, Gao Rong Han, Yan Bo Gao
PLLA with average
molecular weight of 200,000 was supplied by Chengdu Institute of Organic Chemistry, Chinese
Academy of Sciences. 1, 4-dioxane (AR, Shanghai Wulian Chemical Co.) was used as solvent in
thermal induced phase separation method.
The porous composite has an interconnected pore structure with ~200µm macropores and ~5µm micropores (Figure 1a), homogenous dispersion of NCP particles on pore wall surface (Figure 1b).
The porous composite has an interconnected pore structure with ~200µm macropores and ~5µm micropores (Figure 1a), homogenous dispersion of NCP particles on pore wall surface (Figure 1b).
Online since: November 2011
Authors: Shou Zhi Pu, Shi Qiang Cui, Hong Liang Liu, Hui Li
Efficient Synthesis and Properties of a Photochromic hybrid Diarylethene Bearing a Isoxazole Moiety
Hongliang Liu, Shouzhi Pu*, Shiqiang Cui and Hui Li
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.R.China
pushouzhi@tsinghua.org.cn
Keywords: Diarylethene; Photochromism; Fluorescence; Optical storage.
The structure of 1o was characterized by P1PH NMR spectroscopy.
The structure of 1o was characterized by P1PH NMR spectroscopy.
Online since: December 2013
Authors: Xing Jian Li, Shan Shan Gong, Qi Sun
A novel H-phosphonate method for the synthesis of D-mannose-1-phosphate
Xingjian Lia, Shanshan Gongb, Qi Sunc,
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University 605 Fenglin Avenue, Nanchang, Jiangxi 330013, PR China
aemail: lixingjian1990@163.com, bemail: gongshanshan33@gmail.com,
cemail: sunqi96@tsinghua.org.cn
Keywords: H-Phosphonate monoester; Mannose-1-phosphate; Phosphitylation; Deacetylation
Abstract.
Introduction Sugar is an important component of cellular structure and the main form of energy storage in vivo.
Introduction Sugar is an important component of cellular structure and the main form of energy storage in vivo.
Online since: August 2003
Authors: Jun Ichi Hamagami, Kiyoshi Kanamura, Kazuhiro Hasegawa
Development of Particle Assembling Technology
by Using Micro-Electrophoretic Deposition Process
Jun-ichi Hamagami, Kazuhiro Hasegawa and Kiyoshi Kanamura
Department of Applied Chemistry, Graduate School of Engineering,
Tokyo Metropolitan University
1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
Keywords: electrophoretic deposition process, micro-counter electrode, spherical particle assembly, microdot,
patterning, polystyrene sphere, silica sphere
ABSTRACT
A novel particle assembling technique using a local electric field has been investigated by
electrophoretic deposition technique using a very small counter electrode (microelectrode), this is
so-called µ-EPD process.
The formation of the three-dimensionally ordered polystyrene structure might be explained by an action of local electric field in the suspension as well as mutual repulsion between the microspheres.
The formation of the three-dimensionally ordered polystyrene structure might be explained by an action of local electric field in the suspension as well as mutual repulsion between the microspheres.
Online since: September 2013
Authors: Yi Feng Yu, Yue Zhang, Xian Xian Shi, Yong Xing Song
Study on the preparation of repaglinide chitosan microspheres with genipin
Yue Zhang1,2,3,a, Xianxian Shi1,b, Yifeng Yu1,2,3,c, Yongxing Song1,d
1 School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
2 Hebei research center of pharmaceutical and chemical engineering, Shijiazhuang, 050018, China
3 State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Shijiazhuang, 050018, China
ayuezhang@hebust.edu.cn, bshixianxian2@163.com, ckdyyf@163.com, dsunnyschen@163.com
Keywords: Repaglinide, Chitosan, Genipin, Microsphere
Abstract.
(a) (b) (c) Fig. 1 Structure of a REP, b Chitosan and c genipin Experimental section General.
(a) (b) (c) Fig. 1 Structure of a REP, b Chitosan and c genipin Experimental section General.
Online since: December 2016
Authors: Janis Zicans, Remo Merijs Meri, Ritvars Berzins
Compatibilizers Effect on Silyl-Terminated Polyether/Epoxy Resin System Mechanical and Rheological Properties
Ritvars Berzins*, Remo Merijs Meri, Janis Zicans
Department/Research Institute of Polymer Materials, Faculty of Materials Sciences and Applied Chemistry, Riga Technical University, Latvia
ritvarsberzins@inbox.lv, remo.meri@gmail.com
Keywords: Silyl-terminated polyether, silane, compatibilizers.
Based on previous facts sam assists for forming uniform structure and systems curing speed don’t depend much from the blend composition, but for es compatibilized systems cross over modules depend from the composition, possibly indicating that silyl termined polymer and epoxy resin cure more separately and this silane works poorly as compatibilizer.
Based on previous facts sam assists for forming uniform structure and systems curing speed don’t depend much from the blend composition, but for es compatibilized systems cross over modules depend from the composition, possibly indicating that silyl termined polymer and epoxy resin cure more separately and this silane works poorly as compatibilizer.
Online since: October 2013
Authors: Gang Liu, Jun Jie Song, Xue Li
Study on Photochromic Materials with Photochromic and Optical Storage Composite Properties of a Novel Diarylethene
Junjie Song, Xue Li and Gang Liu*
Jiangxi Key Lab of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China
liugang0926@163.com
Keywords: Naphthalene; Diarylethene; Photochromism; Fluorescence;
Abstract.
The structures of diarylethenes 1a were confirmed by 1H NMR (400 MHz, CDCl3, TMS): δ 2.43 (s, 3H, -CH3), 2.47 (s, 3H, -CH3), 6.97(s, 1H, thiophene-H), 7.684 (s, 1H, phenanthrene-H ), 7.59-7.64 (m, 2H, phenanthrene-H), 7.75-7.79 (m, 2H, phenanthrene-H), 7.81 (d, 2H, phenanthrene-H, J = 8.0 Hz), 8.82 (d, 2H, phenanthrene-H, J = 8.0 Hz), 7.24 (s, 1H, naphthalene-H ), 7.65 (s, 1H, naphthalene-H ), 7.62-7.65 (m, 2H, naphthalene-H), 7.67-7.74 (m, 2H, naphthalene-H), 7.24 (d, 1H, naphthalene-H, J = 8.0 Hz), 7.36 (d, 1H, naphthalene-H, J = 8.0 Hz).
The structures of diarylethenes 1a were confirmed by 1H NMR (400 MHz, CDCl3, TMS): δ 2.43 (s, 3H, -CH3), 2.47 (s, 3H, -CH3), 6.97(s, 1H, thiophene-H), 7.684 (s, 1H, phenanthrene-H ), 7.59-7.64 (m, 2H, phenanthrene-H), 7.75-7.79 (m, 2H, phenanthrene-H), 7.81 (d, 2H, phenanthrene-H, J = 8.0 Hz), 8.82 (d, 2H, phenanthrene-H, J = 8.0 Hz), 7.24 (s, 1H, naphthalene-H ), 7.65 (s, 1H, naphthalene-H ), 7.62-7.65 (m, 2H, naphthalene-H), 7.67-7.74 (m, 2H, naphthalene-H), 7.24 (d, 1H, naphthalene-H, J = 8.0 Hz), 7.36 (d, 1H, naphthalene-H, J = 8.0 Hz).
Online since: June 2014
Authors: Quan Sheng Liu, Ke Duan Zhi, Yang Li, Lei Wang, Yang Liu, Meng Zhang, Yan Peng Ban
For the SL-C char, there may remain insufficiently decomposed alkyl groups on the aromatic macromolecular structure, and such functional groups are cleaved during the heat-up to 700℃, contributing to the formation of CH4[8,9].
Acknowledgements This work was financially supported by National Natural Science Foundation of China (21266012), Program of Natural Science Foundation of Inner Mongolia(2012MS0203), Universities Scientific Research Project of Inner Mongolia Department of Education (NJZY12067), Major Program of IMUT(ZD201108) and Program Foundation for Coal Chemistry Preponderant Discipline of IMUT.
Acknowledgements This work was financially supported by National Natural Science Foundation of China (21266012), Program of Natural Science Foundation of Inner Mongolia(2012MS0203), Universities Scientific Research Project of Inner Mongolia Department of Education (NJZY12067), Major Program of IMUT(ZD201108) and Program Foundation for Coal Chemistry Preponderant Discipline of IMUT.
Online since: August 2014
Authors: Shan Shan Gong, Cheng Jun Wang, Qi Sun, De Yun Zeng
An Unexpected Synthesis of 2H-Benzimidazole Derivatives
Chengjun Wanga, Deyun Zengb, Shanshan Gongc, Qi Sund,*
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University 605 Fenglin Avenue, Nanchang, Jiangxi 330013, PR China
aemail: wangchengjun_1989@163.com, bemail: zengdeyun1990@126.com,
cemail: gongshanshan33@gmail.com, demail: sunqi96@tsinghua.org.cn
Keywords: 2H-Benzimidazole; Phenylenediamine; ZrCl4; Aldehyde; Ethanol
Abstract: Treatment of 1,2-phenylenediamines and 3-(N-phenyl-N-methyl)aminoacrolein with ZrCl4 as catalyst in refluxing 95% ethanol afforded unexpected 2H-benzimidazole derivatives as the major products.
The 1H NMR spectrum of the new spot in Figure 1 revealed that the compound was the 2H-benzimidazole derivative 5, which was unexpected from the structures of the starting materials 1 and 4.
The 1H NMR spectrum of the new spot in Figure 1 revealed that the compound was the 2H-benzimidazole derivative 5, which was unexpected from the structures of the starting materials 1 and 4.