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E. A. Il’ina A. V. Aleksandrov A. A. Raskovalov N. N. Batalov 《Russian Journal of Applied Chemistry》2013,86(8):1225-1229
Results of a study of how the density and electrical conductivity of a Li7La3Zr2O12 ceramic depends on the sintering temperature were used to determine the optimal conditions for formation of the system under study as a solid electrolyte with a conductivity of 3.7 × 10?2 S cm?1 at 185°C for electrochemical devices. 相似文献
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Biomimetic pH/redox dual stimuli‐responsive zwitterionic polymer block poly(L‐histidine) micelles for intracellular delivery of doxorubicin into tumor cells 下载免费PDF全文
Johnson V. John Saji Uthaman Rimesh Augustine Kamali Manickavasagam Lekshmi In‐Kyu Park Il Kim 《Journal of polymer science. Part A, Polymer chemistry》2017,55(12):2061-2070
A series of pH/redox dual stimuli‐responsive poly(2‐methacryloyloxyethyl phosphorylcholine)25‐block‐poly(l ‐histidine)n (p[MPC])25‐b‐p[His]n, n = 20, 35, 50, and 75) copolymers consisting of a pH‐responsive p(His)n block and a biocompatible phospholipid analog p(MPC) block connected by a redox‐responsive disulfide linker have been synthesized. The block copolymers are self‐assembled into uniform micelles (~100 nm) in which doxorubicin (Dox) is efficiently encapsulated. The in vitro release profile shows an enhanced release of Dox at low pH (5.0) in 10 mM glutathione (GSH). The in vitro cell viability assays performed using various cell lines show that the blank hybrid micelles have no acute or intrinsic toxicity. A pH‐dependent cytotoxicity is observed with the Dox‐loaded micelles, especially at pH 5.0. Moreover, confocal microscopy images and flow cytometry results show the pH‐dependent cellular uptake of Dox‐loaded micelles. Therefore, the Dox‐loaded micelles can be considered a good candidate for cancer therapy. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55, 2061–2070 相似文献
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We have analyzed the effect of constant electric and magnetic fields on the micro- and substructure characteristics of the combustion products of aluminum nanopowder in air. It has been found that the combustion of aluminum nanopowder in a magnetic field leads to the formation of single crystals of the hexagonal habitus, while the combustion in an electric field results in the formation of faceted crystallites with layered morphology. The fields noticeably affect the crystal lattice parameters of aluminum oxide and nitride (reduce the coherent scattering regions in aluminum nitride and increase such regions in aluminum γ-oxide). At the same time, the displacement of atoms relative to the equilibrium position becomes noticeably smaller for all crystal phases under the action of the fields (except for aluminum nitride in a magnetic field). These results have been explained by the orienting and stabilizing actions of the fields on the combustion products of aluminum nanopowder in air. 相似文献
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R. R. Reznik K. P. Kotlyar I. V. Il’kiv I. P. Soshnikov S. A. Kukushkin A. V. Osipov E. V. Nikitina G. E. Cirlin 《Physics of the Solid State》2016,58(10):1952-1955
The potential to grow filamentary GaN nanocrystals by molecular beam epitaxy on a silicon substrate with a nanosized buffer layer of silicon carbide has been demonstrated. Morphological and optical properties of the obtained system have been studied. It has been shown that the intensity of the photoluminescence spectrum peak of such structures is higher than that of the best filamentary GaN nanocrystals without the buffer silicon carbide layer by a factor of more than two. 相似文献
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Jiyeon KangKyeong-Ju Moon Tae Il LeeWoong Lee Jae-Min Myoung 《Applied Surface Science》2012,258(8):3509-3512
Electromigration of In in amorphous indium-gallium-zinc-oxide thin film transistors under repeated switching operation was investigated by analyzing the distribution of component elements. During the repeated switching operations up to 300 times, threshold voltage of this device increased gradually implying alteration to the internal device structures. Energy dispersive X-ray spectroscopy revealed noticeable redistribution of metallic components, especially In, in the channel layer beneath the source electrode during switching operations by the migration of metallic ions away from the source electrode, which is attributed to electromigrations similar to those observed in organic light emitting diodes having indium tin oxide electrodes. 相似文献