Poly(vinyl chloride)/Nanocarbon Composites for Advanced Potentiometric Membrane Sensor Design.

Polymer nanocomposites filled with carbon nanoparticles (CNPs) are a hot topic in materials science. This article discusses the current research on the use of these materials as interfacial electron transfer films for solid contact potentiometric membrane sensors (SC-PMSs). The results of a comparative study of plasticized poly (vinyl chloride) (pPVC) matrices modified with single-walled carbon nanotubes (SWCNTs), fullerenes-C60, and their hybrid ensemble (SWCNTs-C60) are reported.

A New Approach to the Synthesis of Nanocrystalline Cobalt Boride in the Course of the Thermal Decomposition of Cobalt Complexes [Co(DMF)] with Boron Cluster Anions.

In the course of the study, nanocrystalline cobalt monoboride was prepared by thermal decomposition of precursors [Co(DMF)][An], where [An] = [BH] (), [-BH] () or [BCl] () in an argon atmosphere. Three new salt-like compounds - were prepared when Co(NO) was allowed to react with (EtNH)[An]. Compound is new; the structures of compounds and have been previously reported.

Non-Covalent Interactions in the Crystal Structures of Perbrominated Sulfonium Derivatives of the -Decaborate Anion.

A new series of compounds based on perbrominated disubstituted sulfonium derivatives of the -decaborate anion (-BuN)[2-BBrSR] (R = -Pr, -Pr, -Bu, -CH, -CH, -CH) was obtained, characterised by modern physicochemical methods of analysis. According to the results of an X-ray diffraction study, some of the anions and solvate molecules were disordered. The cations (-BuN) and anions [2-BBrSR] were associated via C-H…Br and H…H contacts.

New type of RNA virus replication inhibitor based on decahydro-closo-decaborate anion containing amino acid ester pendant group.

In this work, a synthetic approach to prepare an example of new class of the derivatives of the closo-decaborate anion with amino acids detached from the boron cluster by pendant group has been proposed and implemented. Compound Na[BH-O(CH)C(O)-His-OMe] was isolated and characterized. This compound has an inorganic hydrophobic core which is the 10-vertex boron cage and the -O(CH)C(O)-His-OMe organic substituent.

Nucleophilic Substitution Reactions in the [BH] Anion in the Presence of Lewis Acids.

As a result of our study on the interaction between the octahydrotriborate anion with nucleophiles (Nu = THF, PhP, PhP-(CH)-PPh (dppe), PhAs, EtN, PhNH, CHN, CHCN, PhCHCN)) in the presence of a wide range of Lewis acids (Ti(IV), Hf(IV), Zr(IV), Al, Cu(I), Zn, Mn(II), Co(II) halides and iodine), a number of substituted derivatives of the octahydrotriborate anion [BHNu] are obtained. It is found that the use of TiCl, AlCl, ZrCl, HfCl, CuCl and iodine leads to the highest product yields. In this case, it is most likely that the reaction proceeds through the formation of an intermediate [BH-HMXn], which was detected by NMR spectroscopy.

Potentiometric quantitation of general local anesthetics with a new highly sensitive membrane sensor.

The detection of local anesthetic drugs is of great importance in the analysis of pharmaceutical, clinical and forensic samples. This paper reports a simple and sensitive potentiometric assay suitable for detecting general local anesthetics (LAs) of two types, namely: amino ester-anesthetics (procaine) and amino amide-anesthetics (lidocaine, articaine). As a detector, a new highly sensitive sensor based on a poly(vinyl chloride)-matrix membrane incorporating ion-pair complexes of protonated procaine with 2-[bis-octadecyl-sulfonic)-closo-decaborate is used.

Primary Amine Nucleophilic Addition to Nitrilium -Dodecaborate [BHNCCH]: A Simple and Effective Route to the New BNCT Drug Design.

In the present work, a convenient and straightforward approach to the preparation of borylated amidines based on the -dodecaborate anion [BHNCCHNHR]-, R=H, Alk, Ar was developed. This method has two stages. A nitrile derivative of the general form [BHNCCH] was obtained, using a modified technique, in the first stage.

Synthesis of Hafnium(IV) Polyaminoacetates.

The interaction of hafnium(IV) salts (oxide-dichloride, chloride, and bromide) with nitrilotriacetic acid (NTA), diethylenetriamminepentaacetic acid (DTPA), 1,2-diaminocyclohexanetetraacetic acid (CDTA), 1,3-dipropylmino-2-hydroxy ,,','-tetraacetic acid (dpta), and -(2-hydroxyethyl)ethylenediamine triacetic acid (HEDTA) has been studied. The corresponding complexes Na[Hf(NTA)]·3HO (), Na[HfDTPA]·3HO (), [HfCDTA(HO)] (), and Na[Hf(dpta)]·7.5HO·0.

Synthesis of Perchlorinated Sulfonium Derivatives of -Decaborate Anion [2-BClSR] (R = -CH, -CH, -CH, -CH, -CH, -CH, CHPh, and -S(CH)).

A method for obtaining perchlorinated di-,-substituted derivatives of the -decaborate anion with various alkyl groups has been developed: [BClSR] (R= -CH, -CH, -CH, -CH, -CH, -CH, CHPh, and -S(CH)). The method is based on the preparation of the sulfonium-substituted anion [BHSR] by alkylation of the anion [BHSH] with bromoalkanes (-CHBr, -CHBr, -CHBr, -CHBr, -CHBr, -CHBr, PhCHBr, and BrCH(CH)CHBr) followed by the cluster chlorination with sulfuryl chloride SOCl in acetonitrile. The process proceeds until the hydrogen atoms in the boron cluster are completely replaced with chlorine and completes within 60 h.

Novel Cationic Meso-Arylporphyrins and Their Antiviral Activity against HSV-1.

This work is devoted to the search for new antiherpes simplex virus type 1 (HSV-1) drugs among synthetic tetrapyrroles and to an investigation of their antiviral properties under nonphotodynamic conditions. In this study, novel amphiphilic 5,10,15,20-tetrakis(4-(3-pyridyl--propanoyl)oxyphenyl)porphyrin tetrabromide (), 5,10,15,20-tetrakis(4-(6-pyridyl--hexanoyl)oxyphenyl)porphyrin tetrabromide () and known 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin tetraiodide () were synthesized, and their dark antiviral activity in vitro against HSV-1 was studied. The influence of porphyrin's nanosized delivery vehicles based on Pluronic F127 on anti-HSV-1 activity was estimated.

Fused 1,2-Diboraoxazoles Based on -Decaborate Anion-Novel Members of Diboroheterocycle Class.

The novel members of the 1,2-diboraoxazoles family have been obtained. In the present work, we have carried out the intramolecular ring-closure reaction of borylated iminols of general type [BHN=C(OH)R] (R = Me, Et, Pr, Pr, Bu, Ph, 4-Cl-Ph). This process is conducted in mild conditions with 83-87% yields.

closo-Dodecaborate Intercalated Yttrium Hydroxide as a First Example of Boron Cluster Anion-Containing Layered Inorganic Substances.

The first member, Y(OH)(BH)Cl·4.98HO, of a new family of boron-containing substances, closo-dodecaborate intercalated layered rare-earth hydroxides, was synthesized using a microwave-assisted hydrothermal method. The structure and composition of this compound were studied by X-ray diffraction, transmission and scanning electron microscopy, thermal analysis, inductively coupled plasma mass spectrometry, IR spectroscopy, and X-ray photoelectron spectroscopy.

Tetra-butyl-ammonium 2-[2,5-dimethyl-3-(4-nitro-phen-yl)-2,3-dihydro-1,2,4-oxadiazo-lium-4-yl]nona-hydro-closo-deca-borate.

The title ionic compound, C16H36N(+)·C10H20B10N3O3(-), consists of a tetra-butyl-ammonium cation and a closo-deca-borate cluster anion, which is bound to the substituted 2,3-dihydro-1,2,4-oxadiazole ring through a B-N bond [1.540 (2) Å]. The distances between connected B atoms in the deca-borate cluster range from 1.