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Online since: September 2017
Authors: Chii Wann Lin, Shih Chung Wei, Pei Tung Yang, Frank X. Gu, Kung Bin Sung
A gold structure array was produced by microsphere lithography for further understand the imaging capacity of SSPM for imaging close and well-arranged structure.
The hexagonal gold structure were then imaged by SSPM and scanning electron microscopy.
The results in Fig. 4 indicated that SSPM could be used to image the well-arranged bowtie structure and hexagonal structure.
Fig. 4 Hexagonal gold structure imaged by scanning electron microscopy and SSPM.
Henderson, "Surface Plasmon Resonance Imaging of Liquid Crystal Anchoring on Patterned Self-Assembled Monolayers," The Journal of Physical Chemistry B, vol. 101, pp. 2143-2148, 1997/03/01 1997
Online since: March 2016
Authors: Wu Zong Zhou, Tariq Aqeel, Heather F. Greer, Duncan W. Bruce, Ali Bumajdad
Bruce,4, d and Ali Bumajdad 5,e 1Science Department, College of Basic Studies, the Public Authority of Applied Education and Training (PAAET) P.O Box 23167, zip code Safat 13092, Kuwait. 2,3School of Chemistry, University of St Andrews, St Andrews, KY16 9ST UK. 4Department of Chemistry, University of York, Heslington, YORK YO10 5DD, UK. 5Chemistry Department, Faculty of Science, Kuwait University, P.O.Box 5969 safat 13060, Kuwait.
Introducing porosity into its structure will increase the surface area and pore volumes significantly.
We therefore decided to use Soxhlet extraction with ethanol for 16-20 hours for template removal before calcining hoping to maintain the porous structure intact.
The network structure also indicates that the formation of these materials is not resulted from aggregation of pre-formed nanocrystallites.
The porous structure is able to withstand calcination at 400 °C and 500 °C and shows high BET surface areas of 220 and 100 m2 g-1, respectively.
Online since: May 2012
Authors: Lubna Aamir, M.S. Qureshi, M.M. Malik, A.H. Siddiqui, Prabha Sana
Transformational changes were observed as a function of temperature by collecting three aliquots of colloids at 60 °C, 80 °C and 100 °C temperature, which indicate formation of fork structures from tape like structures with increasing temperature.
The shoulder peaks observed at 1070 and 894 cm-1 are attributed for the stretching vibration of C–O–C linkages in the saccharide structure of chitosan.
Stability and structure of metal ion complexes of peptides and related ligands.
Stang, Self-assembly of nanoscale cuboctahedra by coordination chemistry, Nature. 398 (1999) 796-799
Lehn, Supramolecular chemistry and chemical synthesis.
Online since: January 2013
Authors: Lin Hua Zhu, Tian Si, Ying Du
The crystal structure of NZP family consists of PO4 tetrahedra and ZrO6 octahedra linked by the corners to form a three-dimensional network.
Furthermore, the information about pore structure of catalyst samples Al-CZP-0.1 prepared by coprecipitation and sol-gel method were measured by N2 adsorption-desorption respectively, the data of the pore structure were listed in Table 1, and their N2 adsorption-desorption isotherms and the pore size distributions were given in Fig. 3.
Conclusions The phosphate compound of CaZr4(PO4)6 with NZP structure doped by Al element were synthesized by sol-gel method and coprecipitation method respectively, and were used as catalyst for α-pinene isomerization.
Both the regular mesoperous structure and acid site play important roles for its catalytic performance.
Vol.38 (2010), p.1493-1498(In Chinese) [2] L H ZHU: Chemistry world.Vol.8 (2007), p.449-452(In Chinese) [3] T SI, L H ZHU: Modern Chemical Industry.Vol.31 (2011), p.56-60(In Chinese) [4] T SI, L H ZHU: Advances in Chemical Engineering. (2012), p.1851-1855 [5] M.
Online since: February 2013
Authors: Ke Duan Zhi, Run Xia He, Fang Wu, Quan Sheng Liu, Jing Li
This indicates that sample 4.0 mol/L have a well stability of structure.
The stability of mesoporous structure of sample 4.0 mol/L is the best.
Moreover, associate with the properties of structure and texture, sample 4.0 mol/L has the most stability of crystal structure and mesoporous structure; it also has the best catalytic activity in WGS.
That is to say, the excellent activity attribute to the fine stabilization of crystal structure and mesoporous structure.
It can be concluded that the concentration of precipitator influence the activity of catalyst via th stability of crystal structure and mesoporous structure.
Online since: February 2012
Authors: Li Wang, Wen Fu, Li Chen
Corrosion mechanism of PEO films on AZ31 magnesium alloys Li Wang 1, a, Wen Fu2, b*, Li Chen3, c 1, 2College of Chemical and Environmental Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China; 2, 3College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China aemail: wanglihaha@126.com, bemail: a449192213@163.com, cemail: a5053618@163.com Keywords: Plasma electrolytic oxidation; films; corrosion mechanism Abstract.
The structure and element contents of the films after immersed in 3.5 wt.% NaCl solution were investigated by SEM and EDS.
The cracks widened further on the surface of PEO films after immersed in NaCl for 120 hours (Fig. 2(b)-6) than that of immersed for 72 hours (Fig. 2(b)-5), which may due to the prolonged immersed time that could destroy the structure of the PEO treated samples[10].
Online since: May 2011
Authors: Wei Chen, Kenneth Charles Williams, Mark Glynne Jones
The material pulse flow structure within the fluidized dense phase pneumatic conveying of flyash powder was studied using the Electrical Capacitance Tomography (ECT).
Measurement of real-time flow structures in gas-liquid and gas-liquid-solid flow systems using electrical capacitance tomography (ECT).
Industrial & Engineering Chemistry Research(2001). 40(20): p. 4216-4226
Online since: September 2011
Authors: Cheng Zhang, Yu Jian Zhang, Mi Ouyang, Yi Xu, Zhen Wei Yu
Electrochemically Synthesis and Characterization of Copolymers Based on 1, 4-Diethoxybenzene and 3, 4-Ethylenedioxythiophene Mi Ouyang1, a, Zhenwei Yu1, b, Yi Xu2, c, Yujian Zhang1, d and Cheng Zhang1,* 1 State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, International Sci.
The structures of the copolymers were established by 1H NMR and FT-IR spectroscopy.
FT-IR spectroscope indicated that the obtained products contained both DEB and EDOT units, confirming the formation of copolymer structure.
Online since: October 2014
Authors: Shan Shan Gong, Cheng Jun Wang, Qi Sun
Synthesis of Two Analogs of AKT Inhibitor-IV via Amine-exchange Reactions Chengjun Wanga, 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: wangchengjun_1989@163.com, bemail: gongshanshan33@gmail.com cemail: sunqi96@tsinghua.org.cn Keywords: AKT; Amine-exchange reaction; N-Methylcyclohexanamine; N-Methylbenzylamine Abstract.
The N-methylphenylamino group conjugated to the 2 position of the benzimidazolium core via a vinyl group in the structure of AKT inhibitor IV was efficiently substituted by treating AKT inhibitor IV with excess of N-methylcyclohexanamine and N-methylbenzylamine.
Recently, AKT inhibitor IV and its analogs have been synthesized and evaluated for their antiviral activities to elucidate their structure-activity relationship [15].
Online since: July 2013
Authors: Ming Yang, Kai Guan, Juan Juan Xia
Preparation and Characterization of Molecularly Imprinted Polymer Microspheres of 2,4-dichlorophenoxyacetic acid  Ming Yanga*, Juanjuan Xiab, Kai Guanc School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, ChangQing Garden, Hankou, Wuhan, 430023, P.
The monodispersed molecular imprinted polymers with porous structure were characterized by SEM, and UV-visible spectrophotometry.
In SEM image, we can clearly observe single particle with average dimensions of 1.5-4.0 µm MIPMs and with porous structure.