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Online since: December 2012
Authors: Hong Ying Xia, Feng Zhao
Electronic structures and spectral properties of the emitting molecule rhenium (I) tricarbonyl containing naphthalimide ring in chemical manufacturing system HongYing Xia1, a, and Feng Zhao1,b 1 Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science &Technology Normal University, Fenglin Street Nanchang, Jiangxi 330013, China.
The optimized ground structures show that the phen ring is not coplanar with the naphthalimide ring.
Molecular geometries, electronic structures, and optical absorption spectra of the complexes studied were discussed in detail using density functional theory (DFT) and time-dependent density functional theory (TDDFT).
Additionally, the dihedral angle of the N4-C8-C9-C10 is observed to be 61.0°, suggesting that the piperidinyl ring is not planar structure.
They thank the Guizhou University High Performance Computation Chemistry Laboratory (GHPCC) for help with computational studies References [1].
Online since: March 2016
Authors: Albert M. Ziatdinov, Nikita S. Saenko, Vladimir V. Kainara
The Effect of Adsorbed Molecules on Electronic Structure and Magnetic Properties of Nanographites Albert M.
Ando, Physics and chemistry of graphene: graphene to nanographene, Pan Stanford Publishing Pte Ltd., Singapore / Singapore, 2013, 476 p
Ziatdinov, Structure and properties of nanographites and their compounds, Ross.
Enoki, Role of edge geometry and chemistry in the electronic properties of graphene nanostructures, Faraday Discuss., 173 (2014) 173-199
Ziatdinov, Nanographites, their compounds and film structures, Russ.
Online since: June 2014
Authors: A. Ivan Oliva, Héctor Juárez, R. Galeazzi, C. Morales, Enrique Rosendo, Janeth Sarmiento Arellano, Román Romano, Gabriela Nieto, Tomás Díaz, Godofredo García, Mauricio Pacio
The NPs of CdSe were characterized by X-ray diffraction (XRD), obtaining a cubic centered face structure.
The literature provides several techniques for obtaining NPs, such as precipitation in solution, high temperature pyrolysis, sonochemistry, radiolytic methods and colloidal chemistry [3].
Three diffraction peaks at 25.6°, 42.0° and 49.6° corresponding to the (110), (220) and (311) orientations of the CdSe cubic structure are obtained.
XRD results confirm that the crystalline structure of samples are fcc, meanwhile CdSe crystallite size was measured between 3.5 and 5.6 nm.
Mansur, CdSe quantum dots stabilized by carboxylic-functionalized PVA: Synthesis and UV–vis spectroscopy characterization, Materials Chemistry and Physics, Vol. 125, pp. 709-717, (211)
Online since: November 2012
Authors: Hong Zhong, Zhong Nan Wang, Shuai Wang
Synthesis of a novel hexanedioyl thiourea resin and its adsorption properties for Ag(I) Zhongnan WANG 1,2,a, Hong ZHONG 1,3,b, Shuai WANG 1,3,c 1College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China 2College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China 3Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education(Central South University), Changsha 410083, China asd-wzn@163.com, bzhongh@mail.csu.edu.cn(corresponding author), cwangshuai_csu@163.com Keywords: synthesis, acylthiourea polymer, resin, adsorption, Ag(I) Abstract.
Its structure was confirmed by FT-IR.
Recently we also reported a kind of acylthiourea resin[9], which has similar structure with poly(ester thiourea) , and also has a good absorptive behavior for Ag(I) ion, but can be synthesized by a more convenient and efficient method.
This may be attributed to the strong affininity of silver towards sulphur om and the particular structure of resin.
Online since: December 2013
Authors: Ola Jensrud, Stanka Tomovic-Petrovic, Rune Østhus
Improved extrudability of high strength alloys using an optimization method based on a combination of experiments and FEM software Stanka Tomovic-Petrovic1,a, Rune Østhus1, b, Ola Jensrud1,c 1 SINTEF Raufoss manufacturing, Department of Material Technology, N-2831 Raufoss, Norway astanka.tomovic.petrovic@sintef.no, brune.osthus@sintef.no cola.jensrud@sintef.no Keywords: Aluminium extrusion, simulation, aluminium alloys of recycled chemistry.
The situation is more complex when dealing with the question of recycling where the wider tolerances in alloy chemistry, design of new alloys and start with an open product specification may be applied.
Alloy Si Fe Mg Mn Cr Zn Cu Ti Al AA 6082 0.7-1.3 Max. 0.5 0.6-1.2 0.4-1.0 Max. 0.25 Max. 0.2 Max. 0.1 Max. 0.1 Balance AlMgSi4 3.73 0.23 0.84 0.58 <0.03 - - - Balance Results and discussion An excess in silicon gives the model alloy an intermetallic particles rich structure, Figure 1 and Table 2.
Mondolfo, Aluminium Alloys: Structure and Properties, Butter Worths, London-Boston, 1976
Online since: January 2016
Let us briefly remind how things were initiated: the idea of structuring a European consortium focused on biomineralization was already floating in the air, since the beginning of the years 2000 and resulted from constructive discussions between two of us (D.
Because of its chemistryoriented nature and of potential applications in industry ensuing from the network's activity, our consortium was administered by the Chemistry and Molecular Sciences and Technologies domain (CMST), one of the nine scientific domains of the COST organization, covering all aspects of sciences and technologies in Europe.
Gabriel FURTOS, Department of Dental Composite Materials, "Raluca Ripan" Institute of Research in Chemistry & Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania.
Isidoro Giorgio LESCI, Laboratory of Environmental and Biological Structural Chemistry (LEBSC), Dipartimento di Chimica "G.
Online since: July 2011
Authors: Xin Hong, Ke Tang
This difference may be ascribed to the synthesis chemistry in the synthesis system.
The weak framework vibrations at ~550 cm-1 and ~450 cm-1 indicate that the nanosized ZSM-5 display a worse crystalline frame structure which is consistent with the XRD data.
Wang: Journal of Natural Gas Chemistry Vol.8 (1999) , p.323 [6] R.
Kaneko: Journal Physics Chemistry Vol.B107(2003), p.10974 [8] W.
Wan: Chinese Journal of Inorganic Chemistry Vol.19(2003), p. 396
Online since: October 2010
Authors: Bao Qiang Wang, Liang Liang Yang
But the effect mechanism of acoustic cavitation to the chemical structure of the drugs is not clear yet.
The research is related to chemistry, biophysics, Chinese medicinal materials and other interdisciplinary.
The transient ultrasonic cavitation affects the biological organization structure.
The basic substance of molecular structure did not be changed.
(1) It is said that ultrasonic wave with big power will destroy the characters of biological chemistry.
Online since: December 2011
Authors: Ning Sheng Zhang, Ke Liang Zhang, Chen Tun Qu
Synthesis, crystal structure and spectroscopy of dibutyl ester-ether fluorescein Keliang Zhang1,2, , Ningsheng Zhang3, Chentun Qu2 1.
Its crystal and molecular structure is determined by single crystal X-ray diffraction.
In the crystal structure, intermolecular O-H hydrogen bands are responsible for the formation of a 3-dimensional net-work.
Due to theirs large absorption in visible range, high quantum yield of fluorescence, and the availability of a variety of chemistries that can be used to conjugate it to functional biomolecules, They are widely used as fluorescent probe in the biosciences.
Furthermore, the structure of dibutyl ester-ether fluorescein was corroborated by X-ray diffraction analysis, the main crystal data is shown in Table 1 and the X-ray crystal structure and the packing of dibutyl ester-ether fluorescein was shown in Fig. 1.
Online since: March 2020
Authors: Ahmed Abd Moneim, Mariamu K. Ali
The presence of these peaks after formation of the polyaniline nanocomposite is evidence that the unit structure of the polyaniline structure is retained after the composite with rGO is formed [19].
Fig. 2 below shows that GO structure has a corrugated structure compared to that of rGO which became more porous after the reduction.
The change may have resulted from the π-π interaction of the rGO and polyaniline structure [19].
Journal of Materials Chemistry C 5 (2017) 4350-4360
Qiu, Convenient construction of poly (3, 4-ethylenedioxythiophene) –graphene pie-like structure with enhanced thermoelectric performance, Journal of Materials Chemistry A 1 (2013) 12395-12399