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Online since: December 2011
Authors: Jin Hyo Boo, Seung Sik Oh, Eunk Young Nam, Hyoung Sub Kim, Hee Yeop Chae, Dae Won Park, Dong Geun Jung, Ji Soo Park, Min Woo Park, Hyo Jin Oh, Myung Hoon Ha, Hoon Bea Kim, Dong Hyun Yeo, Keun Hee Park
And Cole-Cole plots of OSCs showed that bilayered interfacial structure reduced impedance probably by improving the electron transport between Al and PCBM+P3HT.
Experiments The schematic OSC structure used in this experiment is shown in Fig. 1(a).
Fig. 1(b) shows the molecular structure of pyromellitic dianhydride (PMDA).
Then, the cathode interfacial structure of the LiF single layer or the LiF/PMDA bilayer was deposited using thermal evaporation technique.
(a) the schematic OSC structure and (b) the molecular structure of pyromellitic dianhydride (PMDA) In characterizing OSCs with various cathode interfacial structures, a solar simulator (LZC-SSR, Luzchem) equipped with an impedance analyzer (Compactstat, Ivium Technologies) was used to measure current density - voltage (J-V) and impedance characteristics.
Online since: July 2011
Authors: Si Fang Li, Miao Liu, Daniel Umereweneza
Enhancement of Acid Resistance for Ultramarine Blue by Silica Coatings Miao Liua, Sifang Lib* and Daniel Umerewenezac Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China aliumiao905@126.com, bsfli@xmu.edu.cn, cumereweneza@gmail.com Keywords: Silica coating, Ultramarine blue, Acid resistance, Pigment.
Fourier transform infrared (FT-IR) spectroscopy was used to characterize surface structure on the coating layer.
Fourier transform infrared (FT-IR) spectroscopy was used to characterize surface structure on the coating layer.
Swartzfager, in: The Colloid Chemistry of Silica, edited by H.E.
Online since: November 2010
Authors: Guo Qiang Liu, Guang Yin Liu, Xiao Yan Shi
The structure of this compound is more stable when charge and discharge processes proceed.
The polarization was related to the low ion conducting rate of electrolyte and migration of Li ion in the cathode lattice and anode structure.
Peres: Chemistry of Materials Vol. 15 (2003) P. 2376
Jaraba and P Lavela: Chemistry of Materials Vol. 16 (2004) P. 1573
Online since: July 2012
Authors: Nurul Atikah Mohd Mokhtar, Azira Azahidi, Rusdi Roshidah, Kelimah Elong, Norlida Kamarulzaman
Different types of lithium-ion batteries have different chemistries and physical properties, electrochemical performances, cost, and safety characteristics.
The diffraction peaks can be indexed with an α–NaFeO2 type structure based on the hexagonal structure with the R3-m space group.
Ma and J. sun: Materials Chemistry and Physics 113 (2009), p. 780-783 [6] J.
Online since: July 2012
Authors: Ya Nan Lv, Jian Fang Wang, Yin Long, Hui Zhu, Lin Xia, Cheng An Tao
How Graphene Layers Depend on Drying Methods of Graphene Oxide Yanan Lv1,2,a, Jianfang Wang1,b,*, Yin Long1, Cheng-an Tao1, Lin Xia1,Hui Zhu1 1 Department of Chemistry and Biology, College of Science, National University of Defense Technology, 410073, Changsha, P.
China 2 College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, P.
Introduction Graphene, structured by one-atom sp2-hybridized carbon [1] with a thickness of only 0.335 nm, centralizes excellent electrical, thermal, mechanical peculiarities [1-4], possessing potential applications in super capacitors [5-6], physical sensors [7-9], transparent conductors [10] and optoelectronic and microprocessor.
Compared with GO, C=O stretching vibration peak almost disappeared, replaced by un-oxidized and restored sp2 C=C bonds, and the C–O (epoxy) stretching vibration peak and the C–O (alkoxy) stretching peak decreased dramatically, and some of them even disappeared entirely, this means GO were reduced UV-vis The position of the absorption peaks of graphene oxide (no matter it was dispersed from GO powder or film) centered at 228 nm and graphene 264 nm (Fig.3), this indicates GO had been reduced and the aromatic structure had been restored partly.
Online since: January 2004
Authors: Károly Süvegh, Attila Vértes, Tamás Marek, Romána Zelkó, Géza Regdon Jr., Klára Pintye-Hódi
The Effect of Plasticizer on the Free Volume in Metolose Systems Tamás Marek1* , Károly Süvegh 2, Romána Zelkó3 , Géza Regdon Jr.4, Klára Pintye-Hódi4, and Attila Vértes2 1 Research Group for Nuclear Techniques in Structural Chemistry, HAS at Eötvös University, P.O.Box 32, H-1518 Budapest 112, Hungary 2 Department of Nuclear Chemistry, Eötvös University, P.O.Box 32, H-1518 Budapest 112, Hungary 3 Institute of Pharmacy Administration, University Pharmacy, Semmelweis University, Hõgyes E.
On the other hand, a more complicated, and definitely not interactionless, structure is outlined by physical hardness measurements.
Further addition of PEG, however, decreases the hardness till a rubbery, almost gel-like, structure is reached at the highest PEG concentration.
Online since: January 2015
Authors: Zheng Tang Liu, Wei Zeng, Qi Jun Liu
In this calculation, a (2×1×1) super-cell was chosen for constructing the S-doped anatase structure.
Results and discussion Structure optimization.
Structure 1 orginates from the transitions of O 2p (S 3p) electrons into Ti 3dEg conduction bands.
The corresponding structures are also found in (010) and (001).
The calculated band structure shows that S-doped anatase TiO2 has a direct band gap.
Online since: January 2012
Authors: Heng Li
In this paper, the solid state reaction crystallization method was used to synthesize the LiTi1.25O3 of spinel-type oxide, whose composition and structure are different from those in literature[3-4], The experimental result have proved that the inorganic material has good selectivity and higher capacity of exchange for Li+ in the solution removed Li+ previously.
The structure of compound metal oxide LiTi1.25O3 crystallized at 775℃ was much perfect.
Rare Metal, 1999,18(2),143 [2] Z.S.Peng, Y.S.Yan, C.Y.Jiang, C.R.Wan, H.C.Gao: Advance on extraction lithium from salt lake,.J.Chemistry Online. 1997,(12),11 [3] Y.F.Liu, Q.Feng, Kenta Ool: Li extraction/insertion reaction with LiAlMnO4 and LiFeMnO4 spinels in the Aqueous phase, J.Journal of Colloid and Interface Science . 1994,163(1),130 [4] H.Zhong: Prpperty of H2TiO3 type ion-exchangers and extraction of lithium from brine of natural gas wells J.Chinese Journal of Applied Chemistry.2000,17(3),307
Online since: April 2014
Authors: Zhi Gang Xu
The design of 3-, 4- and 5-axis NC machine movement structures depends mostly on the analysis of work-piece surface, so does the selection of the commercial existing NC systems.
This motivates the following research interests: · Free form expression and analyzing, esp., the calculation of the normal unit vector of NURBS etc; · NC system conceptual structure expression, design and selection; · Methodology on 3D layout configuration within NC system design context; · NC system layout and embodiment design.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: June 2008
Authors: Arihiro Kano, Takeshi Yamano, Sun Won Choi, Atsushi Maruyama
Polymer brush Polymer brush Polymer brush Polymer brush----stabilized polyplex for a siRNA carrier stabilized polyplex for a siRNA carrier stabilized polyplex for a siRNA carrier stabilized polyplex for a siRNA carrier with long blood circulatory half with long blood circulatory half with long blood circulatory half with long blood circulatory half----life life life life Arihiro Kano1, a,,,, Takeshi Yamano1, , , , Sun Won Choi,,,, and Atsushi Maruyama1, 2, b 1Institute for Materials Chemistry and Engineering, Kyushu University, 774 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka-ken, 812-0395 2CREST, Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi, Saitama 332-0012 Japan akano@ms.ifoc.kyushu-u.ac.jp, bmaruyama@ms.ifoc.kyushu-u.ac.jp Keywords:Keywords:Keywords:Keywords: cationic copolymer, graft polymer, siRNA, EPR.
Structure of PLL-g-PEG Name Yield Grafting Ratio PEG Content (%) Mn a/104 Mwa /Mna (mole %) b (wt %) b 28K2P90(72) 48 30 2.0 72 91 28K5P70(5) 42 9.6 1.8 5 67 28K5P90(36) 76 31 2.5 36 93 40K2P85(37) 56 8.7 1.5 37 84 40K5P70(5) 30 5.3 1.6 5 67 40K5P90(37) 37 37 1.7 37 94 40K10P95(37) 15 69 1.5 37 97 Table 1.
Conclusions In this study, we prepared various PLL-g-PEG to evaluate the effect of its primary structures such as the length of PLL and PEG, and the grafting ratio of PEG on retention time of siRNA in blood circulation.
Bioconjugate Chemistry, 1998, 9(2), 292-299. 3) A.