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71.
Dr. Albert S. Nazarov Dr. Viktor N. Demin Ekaterina D. Grayfer Dr. Alexander I. Bulavchenko Dr. Aida T. Arymbaeva Dr. Hyeon‐Jin Shin Dr. Jae‐Young Choi Prof. Dr. Vladimir E. Fedorov 《化学:亚洲杂志》2012,7(3):554-560
A mixture of bulk hexagonal boron nitride (h‐BN) with hydrazine, 30 % H2O2, HNO3/H2SO4, or oleum was heated in an autoclave at 100 °C to produce functionalized h‐BN. The product formed stable colloid solutions in water (0.26–0.32 g L ?1) and N,N‐dimethylformamide (0.34–0.52 g L ?1) upon mild ultrasonication. The yield of “soluble” h‐BN reached about 70 wt %. The dispersions contained few‐layered h‐BN nanosheets with lateral dimensions in the order of several hundred nanometers. The functionalized dispersible h‐BN was characterized by IR spectroscopy, X‐ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis spectroscopy, X‐ray diffraction (XRD), dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). It is shown that h‐BN preserves its hexagonal structure throughout the functionalization procedure. Its exfoliation into thin platelets upon contact with solvents is probably owing to the attachment of hydrophilic functionalities. 相似文献
72.
综述了连续介质方法在碳纳米管研究中的最新进展. 主要叙述梁、壳模型,
膜模型,多尺度方法,分子结构力学方法,非局部连续介质方法,以及无网格法的基本原理、
基本方法,及其最新进展,指出其局限性,并预测连续介质方法在碳纳米管研究的发展趋势
和方向. 相似文献
73.
V. R. Bom J. N. Bradbury D. L. Demin C. W. E. van Eijk V. V. Filchenkov N. N. Grafov V. G. Grebinnik K. I. Gritsaj A. D. Konin A. V. Kuryakin V. A. Nazarov V. V. Perevozchikov A. I. Rudenko S. M. Sadetsky Yu. A. Vinogradov A. A. Yukhimchuk S. A. Yukhimchuk V. G. Zinov S. V. Zlatoustovskii 《Hyperfine Interactions》2001,138(1-4):313-319
Muon catalyzed fusion in deuterium was studied by the MCF collaboration at JINR phasotron. The measurements were carried out
with a high-pressure deuterium target at the JINR phasotron in the temperature range 300–800 K at densities ≃0.5 LHD. The
first experimental results for ddμ-molecule formation rate λ
ddμ in the temperature range 400–800 K with deuterium density 0.5 LHD are presented.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
74.
The results of the use of sensors in the demonstration of chemical experiment were described. In spite of some complication of the equipment, the effectiveness of the demonstration experiment was shown to be high while using sensors. 相似文献
75.
V. P. Chizhkov V. N. Boitsov A. V. Demin 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2011,85(2):306-310
The pressure of combined fractions and total entropy changes at pyramidal cascade nodes were estimated for the general case of processing of a binary mixture with an arbitrary composition. The difference between the work of separation determined using the Dirac-Peierls potential and the thermodynamically estimated work of mixing of products obtained was shown to be a consequence of an increase in entropy caused by combining fractions at cascade nodes. 相似文献
76.
77.
We consider the possibility of designing time-analyzing electron-optical systems for electron image tubes with subpicosecond resolution, containing no spherical electrodes, fine-structure grids, or narrow slots (i.e., extremely simple systems with high spatial and temporal resolutions). 相似文献
78.
79.
链状共轭聚合物的带隙能与可见光能相当,在一定条件下具有特殊的颜色,可用于多色显示元件。本文评述和介绍了近年来关于用共轭聚合物制作发光二极管的原理、方法和性能的关系及应用前景。 相似文献
80.
Chemistry of Heterocyclic Compounds - Novel 4'-aryl-1,2',5'-triphenyl-2',4',6,7-tetrahydrospiro[indazole-5,3'-pyrazol]-4(1H)-ones have been synthesized in moderate yields by... 相似文献