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Online since: April 2016
Authors: Jozef Krajčovič, Martin Vala, Martin Weiter, Stanislav Stříteský
The influence of diketopyrrolopyrrole chemical structure on organic field-effect transistors performance
Stanislav Stříteskýa *, Jozef Krajčovičb ,Martin Valac and Martin Weiterd
Brno University of Technology, Faculty of Chemistry, Material Research Centre
Purkynova 464/118, 612 00 Brno, Czech Republic
axcstritesky@fch.vutbr.cz, bkrajcovic@fch.vutbr.czmail, cvala@fch.vutbr.cz, dweiter@fch.vutbr.cz
Keywords: Diketopyrrolopyrrole, charge carrier mobility, OFET, organic electronics.
The parameter of charge carrier mobility in current channel depends on many properties such as semiconductor morphology, molecular packing, chemical structure, presence of charge traps and different geometry of OFETs et al.
The dependence between structure and properties is important to know for future design of semiconducting materials for the construction of OFET based sensor.
Conlusion The influence of chemical structure modification on charge carrier mobility was studied on five diketopyrrolopyrrole derivatives.
Analytical and Bioanalytical Chemistry, 2012, 402, (5), 1813-1826
The parameter of charge carrier mobility in current channel depends on many properties such as semiconductor morphology, molecular packing, chemical structure, presence of charge traps and different geometry of OFETs et al.
The dependence between structure and properties is important to know for future design of semiconducting materials for the construction of OFET based sensor.
Conlusion The influence of chemical structure modification on charge carrier mobility was studied on five diketopyrrolopyrrole derivatives.
Analytical and Bioanalytical Chemistry, 2012, 402, (5), 1813-1826
Online since: November 2020
Authors: Ilya Gavrilin
Effect of Process Temperature on the Growth Kinetic and Structure of Ge Nanowires Formed by Galvanostatic Electrodeposition Using in Nanoparticles
Ilya Gavrilin1,2
1Frumkin Institute of Physical Chemistry and Electrochemistry, RAS, Bld. 4, 31, Leninsky prospect, Moscow, Russia
2National Research University of Electronic Technology – MIET, Bld. 1, Shokin Square, Zelenograd, Moscow, Russia
gavrilin.ilya@gmail.com
Keywords: germanium, nanowires, core-shell, electrodeposition
Abstract.
However, the structure of GeNW obtained at a solution temperature of 90°C has changed.
It was shown that these GeNWs have a core-shell structure: the core is a crystalline Ge phase containing In atoms, and the shell is Ge oxides (hydroxides).
The structure of GeNW did not show a change and the average diameter was about 40 nm.
Piraján, Thermodynamics - Physical Chemistry of Aqueous Systems, InTech Open Access Publisher, UK, 2011, pp. 156-190
However, the structure of GeNW obtained at a solution temperature of 90°C has changed.
It was shown that these GeNWs have a core-shell structure: the core is a crystalline Ge phase containing In atoms, and the shell is Ge oxides (hydroxides).
The structure of GeNW did not show a change and the average diameter was about 40 nm.
Piraján, Thermodynamics - Physical Chemistry of Aqueous Systems, InTech Open Access Publisher, UK, 2011, pp. 156-190
Online since: January 2022
Authors: Aleksandr S. Kazachenko, Yuriy N. Malyar, Anna S. Kazachenko
Kazachenko1,2,c
1Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok, 50/24, Krasnoyarsk, Russia
2Siberian Federal University, Svobodny av., 79, Krasnoyarsk, 660041, Russia
aleo_lion_leo@mail.ru, byumalyar@gmail.com, ckaalla@list.ru
Keywords: citrates, galactomannan, sulfation, sulfate citrates, structure.
The potential use of biologically active polysaccharides strongly depends on their composition and structure [2,3].
These properties strongly depend on the structure and composition of the polysaccharides [5].
Sviridova (Ed.), Chemistry of new materials and biologically active substances, BSU, Minsk, 2016, pp. 521–567
Gryszkin, Analysis of molecular structure of starch citrate obtained by a well-stablished method, LWT - Food Sci.
The potential use of biologically active polysaccharides strongly depends on their composition and structure [2,3].
These properties strongly depend on the structure and composition of the polysaccharides [5].
Sviridova (Ed.), Chemistry of new materials and biologically active substances, BSU, Minsk, 2016, pp. 521–567
Gryszkin, Analysis of molecular structure of starch citrate obtained by a well-stablished method, LWT - Food Sci.
Online since: March 2013
Authors: R. Manivannan, C. Karthikeyan
Synthesis of biodiesel from neem oil using Mg-Al nano hydrotalcite
R.Manivannan 1,a, C.Karthikeyan 2,b
1 Department of Chemistry,Government Arts College (Autonomous),
Kumbakonam- 612 001, Tamilnadu, India
2 Department of Chemistry, Mount Zion College of Engineering and Technology,
Pudukkottai- 622 507, Tamilnadu, India
Email: a manickam_mani@yahoo.co.in b karthik83c@gmail.com
Keywords: Neem Biodiesel, nano Hydrotalcite, Transesterification
Abstract
Methyl ester of fatty acids, derived from vegetable oils or animal fats are known as biodiesel.
The peaks of Al2O3 phase were very small, indicating that Al3+ cations were dispersed in the structure of MgO without the formation of spinel species [13,14].
Hydrotalcite had a relatively uniform hexagonal platelet-like structure, but partly destroyed at the calcined temperature of 550°C for 20h-1.
Before calcination, hydrotalcite had a well developed platelet structure of a typical layered material with a uniform size of 1 µm width and 100nm thickness (Fig. 2a) that is much larger than the above calculated value (7.3 nm).
-M.Lehn, G.Alberti,T.Bein (Eds),Comprehensive Supramolecular Chemistry, Solid State Supramolecular Chemistry:Two and Three Dimentional Inorganic Networks, vol.7, Pergamon, Oxford, 1996, P.251
The peaks of Al2O3 phase were very small, indicating that Al3+ cations were dispersed in the structure of MgO without the formation of spinel species [13,14].
Hydrotalcite had a relatively uniform hexagonal platelet-like structure, but partly destroyed at the calcined temperature of 550°C for 20h-1.
Before calcination, hydrotalcite had a well developed platelet structure of a typical layered material with a uniform size of 1 µm width and 100nm thickness (Fig. 2a) that is much larger than the above calculated value (7.3 nm).
-M.Lehn, G.Alberti,T.Bein (Eds),Comprehensive Supramolecular Chemistry, Solid State Supramolecular Chemistry:Two and Three Dimentional Inorganic Networks, vol.7, Pergamon, Oxford, 1996, P.251
Online since: March 2016
Authors: Josephine Liew Ying Chyi, Zainal Abidin Talib, Lee Han Kee, Fakhrurrazi Ashari, Leong Yong Jian, W. Wahmood Wan Yunus
Properties of the samples have been characterized by X-ray diffraction (XRD) to determine the crystal structure of the sample and X-ray Fluorescence (XRF) to determine the elemental composition of the sample.
The crystal structure and phase identification of the products were determined by Panalytical X'Pert Pro PW3040 MPD X-ray Diffractometer (XRD) using Cu-Kα radiation (λ = 0.15406 nm) in the range of 20˚ to 80˚.
Physics and Chemistry of Solids, 71(12), 1702–1706
Physics and Chemistry of Solids, 70(3-4), 604–608
Spatial and RF power dependence of the structural and electrical characteristics of copper zinc tin selenide thin films prepared by single elementary target sputtering, Materials Chemistry and Physics, 148, 175–180
The crystal structure and phase identification of the products were determined by Panalytical X'Pert Pro PW3040 MPD X-ray Diffractometer (XRD) using Cu-Kα radiation (λ = 0.15406 nm) in the range of 20˚ to 80˚.
Physics and Chemistry of Solids, 71(12), 1702–1706
Physics and Chemistry of Solids, 70(3-4), 604–608
Spatial and RF power dependence of the structural and electrical characteristics of copper zinc tin selenide thin films prepared by single elementary target sputtering, Materials Chemistry and Physics, 148, 175–180
Online since: January 2010
Authors: A. Gilman, M. Piskarev, N. Shmakova, M. Yablokov, A. Kuznetsov
The changes in
the composition and structure of the films were studied by means of IR spectroscopy and electron
spectroscopy for chemical analysis (ESCA).
The composition and chemical structure of the surface of the initial and plasma-treated films were studied by means of IR spectroscopy and ESCA.
Gil'man: High Energy Chemistry Vol. 37 (2003), p. 17 [3] Y.
Meenan: Materials Chemistry and Physics.
Potapov: High Energy Chemistry Vol. 31 (1997), p. 121 [14] S.
The composition and chemical structure of the surface of the initial and plasma-treated films were studied by means of IR spectroscopy and ESCA.
Gil'man: High Energy Chemistry Vol. 37 (2003), p. 17 [3] Y.
Meenan: Materials Chemistry and Physics.
Potapov: High Energy Chemistry Vol. 31 (1997), p. 121 [14] S.
Online since: June 2013
Authors: Ji Yi Yang, Jian Fan, Ming Long Yuan, Chun Sheng Cheng, Yu Yue Qin, Tian Rui Zhao
Preparation and structure characterization of poly(lactide-co-ethylene carbonate) microspheres
Chun-sheng Cheng1,a*,Ji-yi Yang1,b, Yu-yue Qin 1,c, Jian Fan 1,d, Tian-rui Zhao1,e Minglong Yuan2,f
1Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
2School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, China
a mhg693@126.com, b bluefrench@hotmail.com, c rabbqy@163.com, d fj_3332000@yahoo.com.cn, e food363@163.com, f yml@vip.163.com
Keywords: poly(lactide-co-ethylene carbonate), microspheres, structure characterization
Abstract: The purpose of this study was to prepare and characterize tinidazole-loaded poly(lactide-co-ethylene carbonate) (PLEC) microspheres.
The introduction of hydrophilic PEC content influenced the structure and encapsulation efficiency of microspheres.
PLA microspheres had smooth spherical surface structure and there was no evident porous structure.
However, PLEC microspheres were of rough surface and porous internal structure.
The structure of the microspheres varied with the polymer composition.
The introduction of hydrophilic PEC content influenced the structure and encapsulation efficiency of microspheres.
PLA microspheres had smooth spherical surface structure and there was no evident porous structure.
However, PLEC microspheres were of rough surface and porous internal structure.
The structure of the microspheres varied with the polymer composition.
Online since: January 2014
Authors: Hong Yan Cai, Hong Zhuang Wang, De Sheng Ma, Qun Zhang, Zhao Hui Zhou, Jie Cheng
Later, Brühl named all the compounds with similar structure N-trimethyl glycine betaines [1].
The structure was as follows: Wherein, X was in the range of 1~8, Y was in the range of 4~17.
[2] Wu Wenxiang, Zhang Wu, Liu Chunde, The Results of Core Flooding Experiment by Sulfobetaine/Polymer Combinational System, Oilfield Chemistry. 24(2007) 60-62,86
[5] Cai Hongyan, Wang Hongzhuang, Zhu Youyi, Surface/Interface properties of carboxyl betaine without alkali for SP Flooding, Oilfield Chemistry. 30(2013) 407-710
[30] Liu Xuemin, Li Danping, Du Guangjin, Structure and interfacial properties of N, N-bis(dodecylamidoethy1)-carboxybetaine, Oilfield Chemistry. 30(2013) 60-63
The structure was as follows: Wherein, X was in the range of 1~8, Y was in the range of 4~17.
[2] Wu Wenxiang, Zhang Wu, Liu Chunde, The Results of Core Flooding Experiment by Sulfobetaine/Polymer Combinational System, Oilfield Chemistry. 24(2007) 60-62,86
[5] Cai Hongyan, Wang Hongzhuang, Zhu Youyi, Surface/Interface properties of carboxyl betaine without alkali for SP Flooding, Oilfield Chemistry. 30(2013) 407-710
[30] Liu Xuemin, Li Danping, Du Guangjin, Structure and interfacial properties of N, N-bis(dodecylamidoethy1)-carboxybetaine, Oilfield Chemistry. 30(2013) 60-63
Online since: June 2013
Authors: Ugis Cabulis, Mikelis Kirpluks, Maria Kurańska, Aleksander Prociak
Fig. 1 Generic structure of vegetable oil containing oleic, linoleic and linolenic acid chains [4].
Also for better understanding of chemical structure of obtained polyols FTIR spectrums of obtained RO polyols were compared to unmodified RO FTIR spectrum.
It can be explained the presence of tertiary amine groups in polyol structure.
Ionescu, Chemistry and Technology of Polyols for Polyurethanes.
Scrimgeour, Chemistry of fatty acids.
Also for better understanding of chemical structure of obtained polyols FTIR spectrums of obtained RO polyols were compared to unmodified RO FTIR spectrum.
It can be explained the presence of tertiary amine groups in polyol structure.
Ionescu, Chemistry and Technology of Polyols for Polyurethanes.
Scrimgeour, Chemistry of fatty acids.
Online since: July 2015
Authors: Muhammad Izzuddin Mohamed Jaafar, Md Amin Hashim
This weak bonding will lead to the difficulties for the molecule to interact side by side each other to form into the desired structure.
The wet template pores tend to produce precursor film that will influence the formation of organic structures.
Iwuoha, Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods, Journal of Materials Science, 47 (2012) 5455-5460
Govindaraj, Inorganic nanowires, Progress in Solid State Chemistry, 31 (2003) 5-147
Groening, Synthesis of Supported Single-Crystalline Organic Nanowires by Physical Vapor Deposition, Chemistry of Materials, 20 (2008) 7371-7373
The wet template pores tend to produce precursor film that will influence the formation of organic structures.
Iwuoha, Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods, Journal of Materials Science, 47 (2012) 5455-5460
Govindaraj, Inorganic nanowires, Progress in Solid State Chemistry, 31 (2003) 5-147
Groening, Synthesis of Supported Single-Crystalline Organic Nanowires by Physical Vapor Deposition, Chemistry of Materials, 20 (2008) 7371-7373