The diffusion of a polyzwitterion, poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), in aqueous solution containing different alkali halides was studied by fluorescence correlation spectroscopy at single molecule level. It was found that the halide anion has a greater effect on the radius o...

A series of compounds of general formula [Ln(dpso)7](AsF6)3 (dpso  diphenyl sulphoxide; Ln  Y, La-Lu) was synthesized and characterized. IR spectroscopy indicates that the dpso is coordinated through its oxygen atom and that the Oh symmetry of the AsF6− is not changed. The emission spectrum ...

The reaction between hydrazinium difluoride and excess phosphorus pentafluoride in anhydrous hydrogen fluoride yields N2H6(PF6)2 This is unstable at room temperature and decomposes slowly by releasing hydrogen fluoride and phosphorus pentafluoride. The thermal decomposition in a thermoanalyser p...

The effects of adding potassium ion (K+) to lithium oxalyldifluroborate (LiODFB)/ethylene carbonate (EC) + dimethyl carbonate (DMC) (1:1 vol.%) electrolyte on the cycle behaviors of lithium deposition–stripping on a Li22Sn5 substrate electrode are investigated. The functions and mechanism of K+...

Electrical conductivities of LiAsF6 in methyl acetate were measured in concentration range of 0.4269–2.2672 mol·kg− 1 at 253.15, 263.15, 273.15, 283.15, 293.15, 303.15, 313.15, and 323.15 K. Data were treated by using the semi-empirical Casteel–Amis equation at high concentrations. The depend...

A carbothioamide NSO tridentate Schiff base ligand (HL) and its square planar complexes Na[NiLOAc], Na[PdLOAc] and [PtLdmso] have been synthesized and characterized on the basis of melting point, elemental analysis, FT-IR, 1H NMR, 13C NMR, UV–Vis spectra. The structure of HL was elucidated with...

FT-IR and FT-Raman spectra of 2-hydroxy-3-methoxy-5-nitrobenzaldehyde (HMN) and 2-methoxy-1-naphthaldehyde (MN) have been recorded in the regions 4000–400 cm−1 and 3500–100 cm−1, respectively. The molecular structure, conformational stability, geometry optimization, vibrational frequencies hav...

A PET tracer for tumor imaging, 3-18F-l-α-methyl-tyrosine ([18F]FAMT), has advantages of high cancer-specificity and low physiological background. In clinical studies, FAMT-PET has been proved useful for the detection of malignant tumors and their differentiation from inflammation and benign le...

A practical procedure to regioselectively install a methyl group and a phenolic hydroxyl group onto l-tyrosine was developed. By using this approach, protected l-3-hydroxy-4-methoxy-5-methyl-phenylalanine and l-3-hydroxy-4-methoxy-5-methyl-phenylalanol, which are utilized in efficient syntheses ...

IntroductionTransport of the amino acid analog 123I-3-iodo-α-methyl-l-tyrosine, which is used in clinical SPECT imaging, occurs mainly via l-type amino acid transporter type 1 (LAT1; an amino acid exchanger). As LAT1 is highly expressed in actively proliferating tumors, we made a preliminary in...

Introduction3-[18F]fluoro-α-methyl-l-tyrosine ([18F]FAMT) is a useful amino acid tracer for positron emission tomography (PET) imaging of malignant tumors. FAMT analogs labeled with 76Br, a positron emitter with a long half-life (t1/2=16.1 h), could potentially be widely used as amino acid trac...

This study employed a molecularly imprinted composite (MIC) to develop a selective and very sensitive sensor for the determination of quinine. To fabricate the MIC sensor, 3-methyl-4-nitrophenol (MNP) and L-tyrosine (Tyr) were simultaneously electrodeposited in acidic media containing HAuCl4 to ...

Methods are described for the accumulation and detection of 3,5-diaminohexanoate, a new basic amino acid intermediate in the lysine fermentation pathway formed by the reaction sequence α-lysine ⇌ β-lysine ⇌ 3,5-diaminohexanoate. Migration of the terminal amino group of β-lysine to carbon atom...

The morphological, structural and optical properties of the new enantiopure (S)-(-)-1-[(1-phenyl)-N-(biphen-2-yl)methylidene]ethylamine in the solid state are reported. The molecular packing displayed a compact and dense three-dimensional arrangement associated with the biphenyl group as well as...

Premixed calcium phosphate cements have been developed to simplify the usage of traditional calcium phosphate cements and reduce the influence of the setting reaction on the delivery process. However, difficulties in achieving a good cohesion, adequate shelf life and sufficient mechanical proper...

A green process has been performed for the synthesis of the emollient ester cetyl ricinoleate with a new immobilized derivative of Candida antarctica lipase B, which has been prepared by physical adsorption of Lipozyme® CalB L on a macroporous anionic exchange resin (Lewatit® MonoPlus MP 64). An...

The intensified leaching behavior of potassium from phosphorus-potassium associated ore in HCl-CaF2 system with different surfactants was investigated. It was found that anion surfactants could enhance the dissolution fraction of potassium and sodium dodecyl sulfate (SDS) had the best effect. Th...

Introducing a pharmaceutical product on the market involves several stages of research. The scale-up stage comprises the integration of previous phases of development and their integration. This phase is extremely important since many process limitations which do not appear on the small scale be...

In the current study, we found that NaCl induces fast vesicle fusion and aggregation of the bacterial potassium channel KcsA in Escherichia coli (E. coli) membranes. Conventional gel electrophoresis and tryptophan fluorescence experiments were performed to detect NaCl-induced aggregation or supr...

A novel method for the fabrication of acetylene black–dihexadecyl hydrogen phosphate (AB–DHP) composite film modified glassy carbon electrodes (GCEs) was presented, and based on this, a sensitive electrochemical method for the determination of hydroxycamptothecin (HCPT) was developed. Compared...