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Hélène Hall et al.
Brain : a journal of neurology, 137(Pt 9), 2493-2508 (2014-07-27)
The neuropathological substrate of dementia in patients with Parkinson's disease is still under debate, particularly in patients with insufficient alternate neuropathology for other degenerative dementias. In patients with pure Lewy body Parkinson's disease, previous post-mortem studies have shown that dopaminergic
Gang Wu et al.
The journal of physical chemistry. A, 112(41), 10359-10364 (2008-09-26)
We report a multinuclear solid-state ( (23)Na, (39)K, (87)Rb, (133)Cs) NMR study of tetraphenylborate salts, M[BPh 4] (M = Na, K, Rb, Cs). These compounds are isostructural in the solid state with the alkali metal ion surrounded by four phenyl
Ian J Casely et al.
Inorganic chemistry, 50(4), 1513-1520 (2011-01-05)
A series of bis(aryl) bismuth compounds containing (N,C,N)-pincer ligands, [2,6-(Me(2)NCH(2))(2)C(6)H(3)](-) (Ar'), have been synthesized and structurally characterized to compare the coordination chemistry of Bi(3+) with similarly sized lanthanide ions, Ln(3+). Treatment of Ar'(2)BiCl, 1, with ClMg(CH(2)CH═CH(2)) affords the allyl complex
Rosa Peñalver et al.
Talanta, 87, 268-275 (2011-11-22)
Two procedures for the simultaneous determination of organolead (tetraethyllead, triethyllead and trimethyllead) and organomanganese compounds (cyclopentadienyl manganese tricarbonyl (CMT) and methylcyclopentadienyl manganese tricarbonyl (MMT)) are studied. Both procedures involve sample preconcentration by solid-phase microextraction and capillary gas chromatography coupled to
M Chisari et al.
British journal of pharmacology, 164(2b), 667-680 (2011-04-05)
A 'lock-and-key' binding site typically accounts for the effect of receptor antagonists. However, sulphated neurosteroids are potent non-competitive antagonists of GABA(A) receptors without a clear structure-activity relationship. To gain new insights, we tested two structurally unrelated hydrophobic anions with superficially
Tetrahedron Letters, 33, 4815-4815 (1992)
Maryam F Al-Asousi et al.
Talanta, 94, 184-188 (2012-05-23)
Two conventional Zn(II) polyvinyl chloride (PVC) membrane electrodes have been prepared and characterized. They were based on dibenzo-24-crown-8 (DBC) as a neutral carrier, dioctyl phthalate (DOP) as a plasticizer, and potassium tetrakis (p-chlorophenyl) borate, KTpClPB or the halogen-free ionic liquid
Gehad G Mohamed et al.
The Analyst, 136(7), 1488-1495 (2011-02-03)
A screen-printed electrode (SPE) was fabricated for the determination of 1-(ethoxycarbonyl)pentadecyltrimethylammonium bromide (Septonex) based on the use of Septonex-tetraphenylborate as the electroactive substance, and o-nitrophenyloctylether (o-NPOE) as the plasticizing agent. The electrode passes a near-Nernstian cationic slope of 59.33 ±
Sonika Tyagi et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 61(3), 693-704 (2010-02-13)
It is here established that potentiometric polymeric membrane electrodes based on electrically neutral ionophores are a useful analytical tool for the detection of heavy metal ions from environmental and industrial waste water. PVC based membrane containing p-tert-butyl-calix[4]arenethioether derivative as active
Donna L Smith et al.
Organic letters, 14(18), 4934-4937 (2012-09-08)
In the presence of a diene-ligated rhodium complex, ynamides and nitroalkenes undergo catalytic [2 + 2] cycloadditions to provide cyclobutenamides. The presence of sodium tetraphenylborate was found to be crucial for the reactions to proceed efficiently.
Assadollah Beiraghi et al.
Journal of hazardous materials, 190(1-3), 962-968 (2011-05-04)
A new optical sensor was fabricated for determination of beryllium ions. The optode membrane was prepared by incorporation of 1,8-dihydroxyanthrone and sodium tetraphenylborate (NaTPB) in a plasticized poly (vinyl chloride) membrane containing ortho-nitrophenyl octyl ether (o-NPOE) as a plasticizer. Color
Fluorescent one-dimensional nanostructures from a group of uniform materials based on organic salts.
Sergio L de Rooy et al.
Chemical communications (Cambridge, England), 47(31), 8916-8918 (2011-06-16)
Herein we report the synthesis of a fluorescent organic salt through anion exchange and the subsequent fabrication of 1D-nanostructures via a facile templating method.
Rune A Hartvig et al.
Analytical chemistry, 82(18), 7699-7705 (2010-08-26)
The interaction between an intact protein and two lipophilic ions at an oil-water interface has been investigated using cyclic voltammetry, impedance based techniques and a newly developed method in which the biphasic oil-water system is analyzed by biphasic electrospray ionization
Kin-Cheung Chan et al.
Dalton transactions (Cambridge, England : 2003), 44(34), 15135-15144 (2015-05-06)
A new series of cyclometalated iridium(III) complexes with isocyanoborate ligands [Ir(R2ppy)2(L)(CNBR'3)] (R = H or F; L = CNC6H4Cl-4 or PPh3; R' = Ph, C6F5 or C6H4Cl-4), [Ir(biqb)(ppy)(CNBR''3)] (R'' = C6F5 or C6H4Cl-4) and {Ir(ppy)2(CN)n[CNB(C6F5)3]2-n}(-) (n = 0 or 1)
M M Khater et al.
Bioelectrochemistry (Amsterdam, Netherlands), 77(1), 53-59 (2009-08-18)
In this study a PVC membrane electrode for determination of ketotifen fumarate is reported, where ketotifen tetraphenylborate (Keto-TPB) was used as ion exchanger. The electrode has linear range of 5.6x10(-6)-1.0x10(-2) and 1.0x10(-5)-1.0x10(-2) mol/L, with detection limits 2.37x10(-6)and 4.60x10(-6) mol/L in
Gamal Abdel Hafiz Mostafa et al.
Journal of AOAC International, 93(2), 549-555 (2010-05-20)
The construction and electrochemical response characteristics of polyvinylchloride (PVC) membrane sensors for donepezil HCl (DP) are described. The sensing membranes incorporated ion-association complexes of DP cation and sodium tetraphenyl borate (sensor 1), phosphomolybdic acid (sensor 2), or phosphotungstic acid (sensor
Stephen Wai-cheung Chung et al.
Journal of chromatography. A, 1218(9), 1260-1265 (2011-01-25)
A reliable and sensitive method for determination simultaneously of monomethylmercury (MeHg) and monoethylmercury (EtHg) in various types of foods by gas chromatography inductively coupled plasma mass spectrometry (GC-ICP/MS) was developed and validated. Samples were digested with pancreatin and then hydrochloric
Beata Paczosa-Bator et al.
Talanta, 81(3), 1003-1009 (2010-03-20)
This paper focuses on the quantitative determination of the loss of the components from plastic membranes of ion-selective electrodes (ISEs) during contact with aqueous bathing solutions. The leaching processes, which affect the ISE responses, are rarely characterized by independent methods.
The Journal of Organic Chemistry, 57, 5136-5136 (1992)
Hiroyuki Hayashi et al.
The Journal of organic chemistry, 73(22), 8683-8693 (2008-10-16)
1-Ethyl-2-(1-oxy-3-oxo-4,4,5,5-tetramethylimidazolin-2-yl)-3-methylimidazolium bromide, [EMINN](+)[Br](-), carrying nitronylnitroxide (NN) in the cation unit, was prepared as a parent molecule and converted to seven salts, [EMINN](+)[X](-) (X = I, TFSI (bis(trifluoromethanesulfonyl)imide), BPh4 (tetraphenylborate), [EMINN](+)(1-3)[BA(1-3)]((1-3)-); BA1 (benzoic acid), BA2 (terephthalic acid), and BA3 (trimesic acid)
Mirela Samardžić et al.
Talanta, 83(3), 789-794 (2010-12-15)
A sensitive potentiometric surfactant sensor based on a highly lipophilic 1,3-didecyl-2-methyl-imidazolium cation and a tetraphenylborate (TPB) antagonist ion was used as the end-point detector in ion-pair potentiometric surfactant titrations using sodium TPB as a titrant. Several analytical and technical grade
S I M Zayed et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 26(1), 45-49 (2010-01-13)
The construction and electrochemical response characteristics of two new polyvinyl chloride (PVC) membrane sensors for the determination of sibutramine hydrochloride were described. The sensors are based on the ion association complexes of sibutramine with sodium tetraphenylborate (NaTPB) or phosphotungstic acid
Leonor Pérez-Fuentes et al.
Soft matter, 14(38), 7818-7828 (2018-09-27)
We have studied the effect of different ions belonging to the extended Hofmeister series on the thermosensitive polymer poly(N-isopropylacrylamide) (PNIPAM), by combining Differential Scanning Calorimetry (DSC) and Dynamic Light Scattering (DLS). The variations in the lower critical solution temperature (TLCS)
Leonor Pérez-Fuentes et al.
Soft matter, 11(25), 5077-5086 (2015-06-02)
Minute concentrations of big hydrophobic ions have the ability to induce substantial effects in soft matter systems, including novel phases in lipid layers, giant charge inversion in colloids and nanostructuration in polymer surfaces in contact with water. The effects are
Ronda A Crist et al.
Laboratory hematology : official publication of the International Society for Laboratory Hematology, 15(4), 45-48 (2009-11-20)
Coagulation testing is performed with citrate-treated plasma. Samples submitted in other anticoagulants, such as EDTA, should not be tested. We aimed to evaluate the effects of EDTA on routine and specialized coagulation tests and to establish sodium tetraphenylborate testing as
Recovery of ammonium and cesium ions from aqueous waste streams by sodium tetraphenylborate.
Ponder SM & Mallouk TE.
Industrial & Engineering Chemistry Research, 38(10), 4007-4010 (1999)
Yoon Kyung Kwon et al.
Chemical & pharmaceutical bulletin, 63(12), 1076-1080 (2015-12-04)
The aim of this study was to search for a novel choline acetyltransferase (ChAT) activator from plants traditionally grown in Korea. An ethanol extract from Chaenomeles sinensis Koehne showed the highest ChAT-activating effect in vitro in an assay that used
Gehad G Mohamed et al.
Drug testing and analysis, 4(12), 1009-1013 (2011-10-15)
The construction and electrochemical response characteristics of a screen-printed electrode (SPE) for the determination of dodecyltrimethylammonium bromide (DTAB) are described. The sensor was based on the use of DTA-tetraphenylborate ion association complex as an electroactive material in screen-printed electrode with
Aihui Liang et al.
Bioprocess and biosystems engineering, 34(5), 639-645 (2011-01-22)
In the pH 6.6 Na2HPO4-NaH2PO4 buffer solutions and in the presence of urease catalyst, urea can be decomposed to form NH4+. The NH4+ reacted with sodium tetraphenyl boron (NaTPB) to form the association particles that exhibited a resonance scattering (RS)
Toby Lieber et al.
Nature, 570(7761), 380-384 (2019-05-17)
Mitochondria contain their own genomes that, unlike nuclear genomes, are inherited only in the maternal line. Owing to a high mutation rate and low levels of recombination of mitrochondrial DNA (mtDNA), special selection mechanisms exist in the female germline to
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