Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Comprehensive density functional theory computations on substrate hydroxylation by a range of nonheme iron(IV)-oxo model systems [Fe(IV)(O)(NH(3))(4)L](+) (where L = CF(3)CO(2)(-), F(-), Cl(-), N(3)(-), NCS(-), NC(-), OH(-)) have been investigated to establish the effects of axial ligands with different degrees of ele…
We have used a stepwise approach for cosensitization of a thiocyanate-free Ru(II) sensitizer with an organic dye (TDPP) for dye sensitized solar cells. The cosensitized SPS-01 + TDPP device showed enhanced Voc and Jsc relative to the individual dye sensitized solar cells. Upon the optimization, the device made of SPS-…
This letter introduces the first beam splitter that acts on free-space, planar, microwave frequency waves below 80 GHz. The design utilizes a frequency selective surface (FSS) operating away from its normal frequency of operation. The FSS is constructed from an array of scalable printed patterns, which allows for the…
A novel ultra-cryo milling micronization technique for pharmaceutical powders using liquid nitrogen (LN2 milling) was used to grind phenytoin, a poorly water-soluble drug, to improve its dissolution rate. LN2 milling produced particles that were much finer and more uniform in size and shape than particles produced by…
It is a challenge to detect molecules lacking a chromophore, such as polyamines, by optical methods since they are insensitive to light. In order to detect the optical signals, it is compulsory to derive these molecules with optical labels, which, however, is complicated, time-consuming and may be expensive. In this w…
Tin disulphide (SnS2) nano-crystalline films were deposited on glass substrates by chemical bath deposition using tin chloride (SnCl2) and thioacetimide (C2H5NS) as the precursors with triethanolamine and ammonia (NH4) as the complexing agents at a bath temperature of 60oC. The layers were grown by varying the volume…
A donor-acceptor dyad model system using a flavin moiety as a photo-active acceptor has been synthesized for an energy and photo-induced electron transfer study. The photophysical investigations of the dyad revealed a multi-path energy and electron transfer process with a very high transfer efficiency. The photo-activ…
A new type of nanoemulsion formed by two immiscible ionic liquids was prepared for the first time. This novel kind of emulsion involves no volatile organic solvent. Metal-organic framework nanorods with large mesopores were synthesized in the nanoemulsion.
Crystallized and fluorinated nanoporous Ta(2)O(5) spheres were prepared by a combination of co-precipitation and hydrothermal methods in a NH(4)F-containing water solution. The as-prepared porous spheres, with a pore-size of around 7 nm and a large specific surface area of 132 m(2) g(-1), show superior photocatalytic…
A novel poly((2-dimethylamino) ethyl methacrylate-glycidyl methacrylate)-alginate (P(DMAEMA-GMA)alginate) semi-IPN hydrogel was synthesized via radical polymerization of the double bonds and ring-opening of the epoxy groups without using catalyst and cross-linker. (1)H-NMR, FT-IR and DSC data were consistent with the…
Diaminomaleodinitrile was reacted at low temperatures with in situ generated nitrous acid to form 4,5-dicyano-2H-1,2,3-triazole (1) in yields above 90%. Crystalline 1 was then reacted with one equivalent of a suitable alkali or alkaline earth metal base (typically a hydroxide or a carbonate) in a polar solvent to form…
A near infrared fluorescent polymeric drug delivery system (NIRF DDS) with pH-responsive drug release properties has been designed and developed. This material was prepared by chemical conjugation of the anticancer drug doxorubicin and hydrophobic aminocyanine dye to triblock copolypeptide via hydrazone and amide bond…
Various morphologies of hematite (α-Fe2O3) superstructures such as grape, cube, dumbbell, and microsphere shapes have been reproducibly obtained by a caffeine-assisted environmentally benign one-step hydrothermal synthesis route in the presence of different solvents. The hematite superstructures are formed by self-ass…
It is shown that superimposed multiple shots of linearly polarized 800-nm, 100-fs laser pulses at lower fluence than the single-pulse ablation threshold produce periodic nanostructures with almost constant periods of 150 nm and 400 nm on silicon surface immersed in water. The nanostructure formation and its characteri…
An innovative SANEX process was designed using an organic phase comprising TODGA in TPH + 5% 1-octanol and an aqueous phase containing SO3-Ph-BTP for the selective strip. The flow-sheet was optimized using batch data, single stage data and data from previously run TODGA processes. Recoveries for some key elements were…
BACKGROUND: Our goal was to set up an ex vivo culture system to assess whether cartilage wounding (partial-thickness defects) can induce morphological changes in neighboring chondrocytes and whether these cells can translocate to the surface of the defect. METHODS: Two-millimeter partial-depth defects were created in…
LaFeO 3 nanostructures for acetone gas sensing as well as photocatalytic degradation of methylene blue Dongming
This study introduces a predictive model involving the concept of the dipole neutrality point (DNP) for dipoles at the high-k dielectric/semiconductor interface. The DNP allows a simple and intuitive prediction of interface dipoles using electronegativity (EN). This concept is formulated based on a negative correlatio…
A N-O bond is introduced into hyperbranched polyimide photocatalysts for the first time to change their polarity and modulate electronic structure. Both of the changes help improve the photocatalytic ability of the polyimide. This strategy shows great prospect for synthesizing effective organic photocatalysts.
An asymmetric multicomponent catalyst, BINOLate/titanium, successfully encapsulated in the nanocages of mesoporous silicas exhibits much higher activity than the homogeneous counterpart in quasi solvent-free enantioselective carbonyl-ene reaction, owing to the confinement effect of the nanoreactor.