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Online since: May 2016
Authors: Erik Janzén, Ádám Gali, Andreas Gällström, András Csóré
Gali1,3,d
1Department of Atomic Physics, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
2Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
3Wigner Research Centre for Physics, Hungarian Academy of Sciences, P.O.
Box 49, H-1525 Budapest, Hungary acsorean@gmail.com, bandreas.gallstrom@gmail.com, cerija@ifm.liu.se, dgali.adam@wigner.mta.hu Keywords: biomarker, PL spectrum, NIR emission, DFT, HSE06, electronic structure, charge transition levels, group theory Abstract.
Method In order to understand PL spectra, electronic structure of stable Mo defects should be calculated accurately.
Electronic structure of MoSi-C consists of a fully occupied degenerate e level, an empty a1, and e levels, respectively from the valence band maximum (VBM) to the conduction band minimum (CBM).
Since three defect levels are introduced in the electronic structure, intra-defect-level optical transitions may occur which cannot be estimated by charge transition levels.
Box 49, H-1525 Budapest, Hungary acsorean@gmail.com, bandreas.gallstrom@gmail.com, cerija@ifm.liu.se, dgali.adam@wigner.mta.hu Keywords: biomarker, PL spectrum, NIR emission, DFT, HSE06, electronic structure, charge transition levels, group theory Abstract.
Method In order to understand PL spectra, electronic structure of stable Mo defects should be calculated accurately.
Electronic structure of MoSi-C consists of a fully occupied degenerate e level, an empty a1, and e levels, respectively from the valence band maximum (VBM) to the conduction band minimum (CBM).
Since three defect levels are introduced in the electronic structure, intra-defect-level optical transitions may occur which cannot be estimated by charge transition levels.
Online since: March 2010
Authors: Yin Qun Hua, Yun Xia Ye, Rui Fang Chen
Some
martensitic structures have obvious trend of growth in steps.
The ordinary analyse method of materal structure is X-Ray Diffraction (XRD)[6].Fig.3 is XRD patterns of the samples cooled in different quenched ways, which show that there are not martensite transformation in Fe20Ni3Mn alloy and the microstructure is mainly austensite and ferrite.
In the experiments, we haven't found the martensite shape described in reference[3], so we call the structures as "like-deformation martensite".
It is shown that there are large amount of martensite structure around dislocation ring.
The sizes of most martensite structures are not above 50nm and some of them are about 5nm, which indicates that laser shock processing method can generate nanostructure in Fe20Ni3Mn alloy.
The ordinary analyse method of materal structure is X-Ray Diffraction (XRD)[6].Fig.3 is XRD patterns of the samples cooled in different quenched ways, which show that there are not martensite transformation in Fe20Ni3Mn alloy and the microstructure is mainly austensite and ferrite.
In the experiments, we haven't found the martensite shape described in reference[3], so we call the structures as "like-deformation martensite".
It is shown that there are large amount of martensite structure around dislocation ring.
The sizes of most martensite structures are not above 50nm and some of them are about 5nm, which indicates that laser shock processing method can generate nanostructure in Fe20Ni3Mn alloy.
Online since: September 2013
Authors: Hao Tang, Bin Guo, Hai Tian Jiang, Pan Xin Li
Results showed that the starch macromolecular structure was damaged by irradiation, and with increased irradiation time, the temperature of melt endothermic peak and tensile strength decreased, elongation at break increases for starch plastic, the thermoplastic property of starch was enhanced obviously.
So starch can be thermoplastic only when the molecular structure is disordered [1].
Including microwave, extrusion, gamma-ray irradiation and ultra-fine grinding technology. (2) Chemistry method.
DSC analyses of thermoplastic starch of different irradiation time suggested that the longer irradiation time, the greater the extent of the damage on the internal molecular structure of the starch, and made starch segment easy to move.
SEM analyses revealed the destruction of the irradiation on the molecular structure of the starch made the fracture surface gradually smooth, improving its thermoplastic.
So starch can be thermoplastic only when the molecular structure is disordered [1].
Including microwave, extrusion, gamma-ray irradiation and ultra-fine grinding technology. (2) Chemistry method.
DSC analyses of thermoplastic starch of different irradiation time suggested that the longer irradiation time, the greater the extent of the damage on the internal molecular structure of the starch, and made starch segment easy to move.
SEM analyses revealed the destruction of the irradiation on the molecular structure of the starch made the fracture surface gradually smooth, improving its thermoplastic.
Online since: April 2011
Authors: Yuan Yuan Xing, Xu Hui Li, Jing Xin Zhou, Ti Feng Jiao, Juan Zhou
UV spectra showed that compared with ethanol solution, the cast film on quartz plate showed H-type or J-type aggregate structure.
The molecular structures of C16GlySb were confirmed by 1H NMR.
Chemical structure of Schiff base derivative C16GlySb.
In order to investigate the characteristic substituted groups in molecular structures, we have measured IR spectra of these compounds in KBr plate, as shown in Fig. 3.
In addition, the appearance of similar TG-DTA curves in G-Zn and G-Cd suggested that there had similar chemical structure and thermal decomposed process.
The molecular structures of C16GlySb were confirmed by 1H NMR.
Chemical structure of Schiff base derivative C16GlySb.
In order to investigate the characteristic substituted groups in molecular structures, we have measured IR spectra of these compounds in KBr plate, as shown in Fig. 3.
In addition, the appearance of similar TG-DTA curves in G-Zn and G-Cd suggested that there had similar chemical structure and thermal decomposed process.
Online since: September 2019
Authors: Aleksander V. Semencha, Margarita G. Dronova, Elena V. Bochagina
Synthesis of complex oxides with garnet structure by spray drying of an aqueous salt solution.
Synthesis of titanium oxide structures on mesoporous silicon dioxide surface by molecular layering.
Conditions for self-ordering of porous structure of anodic aluminum oxide in weak and strong acids.
Templates in Chemistry. – Berlin: Springer, 2005. – 248 p
Chemistry–A European Journal, 16(11), 3497-3503
Synthesis of titanium oxide structures on mesoporous silicon dioxide surface by molecular layering.
Conditions for self-ordering of porous structure of anodic aluminum oxide in weak and strong acids.
Templates in Chemistry. – Berlin: Springer, 2005. – 248 p
Chemistry–A European Journal, 16(11), 3497-3503
Online since: December 2023
Authors: Lorna Anguilano, Mizi Fan, Mohammad Al-Zu'bi
Polymer Chemistry, 5(4), pp.1145-1154
Journal of Polymer Science Part A: Polymer Chemistry, 50(21), pp.4548-4556
Journal of Materials Chemistry, 20(23), pp.4937-4948
Composite structures, 67(1), pp.115-124
Journal of Materials Chemistry, 21(35), pp.13290-13298
Journal of Polymer Science Part A: Polymer Chemistry, 50(21), pp.4548-4556
Journal of Materials Chemistry, 20(23), pp.4937-4948
Composite structures, 67(1), pp.115-124
Journal of Materials Chemistry, 21(35), pp.13290-13298
Online since: May 2021
Authors: Wega Trisunaryanti, Triyono Triyono, Dyah Ayu Fatmawati, Siti A Nur Hadjarningrum
Triyonob, Siti A Nur Hadjarningrumc,
Dyah Ayu Fatmawatid
Department of Chemistry, Universitas Gadjah Mada,
Sekip Utara BLS 21, Sleman, D.I.
Mubarok, Sintesis dan Karakterisasi Mordenit dari Lumpur Lapindo dengan Variasi Sumber Alumina, Thesis, Department of Chemistry FMIPA UGM, Yogyakarta (2013)
Stucky, Nonionic Triblock and Star Diblock Copolymer and Oligomeric Surfactant Syntheses or Highly Ordered, Hydrothermally Stable, Mesoporous Silica Structure, J.
Iler, The Chemistry of Silica: Solubility, Polymerization, Colloid, and Surface Properties, and Biochemistry, John Willey and Sons, New York (1979)
Badriyah, Sintesis dan Karakterisasi Katalis Berbasis Ni-MCM-41 Sebagai Perengkah Untuk Minyak Sawit, Thesis, Department of Chemistry FMIPA UGM, Yogyakarta (2014)
Mubarok, Sintesis dan Karakterisasi Mordenit dari Lumpur Lapindo dengan Variasi Sumber Alumina, Thesis, Department of Chemistry FMIPA UGM, Yogyakarta (2013)
Stucky, Nonionic Triblock and Star Diblock Copolymer and Oligomeric Surfactant Syntheses or Highly Ordered, Hydrothermally Stable, Mesoporous Silica Structure, J.
Iler, The Chemistry of Silica: Solubility, Polymerization, Colloid, and Surface Properties, and Biochemistry, John Willey and Sons, New York (1979)
Badriyah, Sintesis dan Karakterisasi Katalis Berbasis Ni-MCM-41 Sebagai Perengkah Untuk Minyak Sawit, Thesis, Department of Chemistry FMIPA UGM, Yogyakarta (2014)
Online since: April 2020
Authors: Sri Juari Santosa, Suyanta Suyanta, Bambang Rusdiarso, Devita Cahyani Varin Arifin, Desi Indriyani Saragih
Nanotechnology is the science and engineering of composing and designing materials and functional structures on a nanometer scale [1].
Some methods used for the synthesis and stabilization of AgNPs, i.e. chemistry, physics, and biology.
Therefore, the chemistry method is used for the synthesis of AgNPs using environmentally friendly materials.
Silver nanoparticles (AgNPs) possess very large surface area, crystalline structure, and excellent antimicrobial properties, so they have been used for the treatment of medical diseases for more than 100 years that do not cause toxic to human skin.
Gusrizal, Synthesis of silver nanoparticles by reduction of silver ion with 2-,3-, 4- hydroxybenzoic acid and their application for determination of paraquat, Dissertation, Chemistry Study Program, Universitas Gadjah Mada, Yogyakarta, 2017
Some methods used for the synthesis and stabilization of AgNPs, i.e. chemistry, physics, and biology.
Therefore, the chemistry method is used for the synthesis of AgNPs using environmentally friendly materials.
Silver nanoparticles (AgNPs) possess very large surface area, crystalline structure, and excellent antimicrobial properties, so they have been used for the treatment of medical diseases for more than 100 years that do not cause toxic to human skin.
Gusrizal, Synthesis of silver nanoparticles by reduction of silver ion with 2-,3-, 4- hydroxybenzoic acid and their application for determination of paraquat, Dissertation, Chemistry Study Program, Universitas Gadjah Mada, Yogyakarta, 2017
Online since: March 2012
Authors: Fei Lu, Yuan Sheng Ding, Xin Bao Han
The proposed composition and structure of the catalyst were evidenced by XPS, FT-IR, XRD, TG-DTA and elemental analysis.
The results indicated that the heteropoly anions still reserved their Keggin structure in the compound.
HPA and POMs have clear sizes, shapes and discrete fragments similar to the structure of metal oxides [1].
The crystal structure was identified using a Dmax 2200PC wide angle X-ray diffraction.
The result showed the synthesed transfer POMs exhibit Keggin structure.
The results indicated that the heteropoly anions still reserved their Keggin structure in the compound.
HPA and POMs have clear sizes, shapes and discrete fragments similar to the structure of metal oxides [1].
The crystal structure was identified using a Dmax 2200PC wide angle X-ray diffraction.
The result showed the synthesed transfer POMs exhibit Keggin structure.