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25,464 Newest Publications about the topic solution

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Solution vs. gas phase relative stability of the choline/acetylcholine cavitand complexes

27-Feb-2015 | Hassan Abdoul-Carime; Bernadette Farizon; Michel Farizon; Jean-Christophe Mulatier; Jean-Pierre Dutasta; Henry Chermette, Physical Chemistry Chemical Physics, 2015

How the information obtained from the gas phase experiments can reflect the processes in solution is a crucial question for analytical chemistry, and particularly the selective host–guest recognition mechanisms which are fundamental in biology. Here we combine ElectroSpray Ionization mass ...

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Monitoring ultrafast intramolecular proton transfer processes in an unsymmetric [small beta]-diketone

27-Feb-2015 | Pramod Kumar Verma; Andreas Steinbacher; Federico Koch; Patrick Nuernberger; Tobias Brixner, Physical Chemistry Chemical Physics, 2015

We report the experimental determination of the intramolecular enol–enol tautomerization rate of an unsymmetric β-diketone, benzoylacetone, with femtosecond transient absorption in the ultraviolet. Initially, there is an equilibrium of two possible enolic structures in solution, which is ...

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The peculiar behavior of Picha in the formation of metallacrown complexes with Cu(II), Ni(II) and Zn(II) in aqueous solution

27-Feb-2015 | Luciano Marchiò; Nicola Marchetti; Corrado Atzeri; Valentina Borghesani; Maurizio Remelli; Matteo Tegoni, Dalton Transactions, 2015

The thermodynamic stability of the metallacrown complexes formed by picolinehydroxamic acid (Picha) with Cu(ii), Ni(ii) and Zn(ii) in aqueous solution has been determined by potentiometry, and the speciation models were validated by ESI-MS and UV-visible spectrophotometry. Cu(ii) and Zn(ii) form ...

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Highly selective colorimetric sensing of Hg(II) ions in aqueous medium and in the solid state via formation of a novel M–C bond

27-Feb-2015 | C. Parthiban; R. Manivannan; Kuppanagounder P. Elango, Dalton Transactions, 2015

For the first time an easy-to-make receptor 2-chloro-3-(thiazol-2-ylamino)naphthalene-1,4-dione (R1) for highly selective sensing of Hg(ii) ions in aqueous solution and in the solid state through the formation of an Hg–C bond was developed. The Hg(ii) ion sensing properties of R1 were ...

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Cytotoxic activity and protein binding through an unusual oxidative mechanism by an iridium(I)–NHC complex

27-Feb-2015 | Y. Gothe; T. Marzo; L. Messori; N. Metzler-Nolte, Chemical Communication, 2015

A new NHC iridium(i) complex (1) showing significant antiproliferative properties in vitro is described here. Its crystal structure, solution behaviour and interactions with the model proteins cytochrome c (cyt c) and lysozyme were investigated. High resolution ESI-MS measurements suggest that ...

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Assembly of cyanometalate-functionalized phosphotungstates with magnetic properties and bifunctional electrocatalytic activities

27-Feb-2015 | Ya Wang; Ming-Hui Sun; Feng-Yan Li; Zhi-Xia Sun; Lin Xu, Dalton Transactions, 2015

Two cyanometalate-functionalized heteropolytungstates (C4H10ON)23[HN(CH2CH2OH)3]11H[FeIII(CN)6(α2-P2W17O61NiII)4]·31H2O (1) and (C4H10ON)23[HN(CH2CH2OH)3]10H2[FeIII(CN)6(α2-P2W17O61CoII)4]·27H2O (2) (C4H10ON = morpholine, HN(CH2CH2OH)3 = triethanol amine) have been successfully synthesized in ...

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A naphthalimide-based fluorescent probe for highly selective detection of histidine in aqueous solution and its application in in vivo imaging

27-Feb-2015 | Hio-Ieng Un; Shuai Wu; Chang-Bo Huang; Zheng Xu; Lin Xu, Chemical Communication, 2015

A naphthalimide-based fluorescent ensemble probe NPC for selectively detecting His in aqueous solution (10 mM HEPES, pH 7.4) has been reported. Moreover, the application of NPC in in vivo (both in Hela cells and in C. elegans) fluorescence imaging was carried out as well.

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Theory of the formation of the electric double layer at the ion exchange membrane–solution interface

26-Feb-2015 | A. A. Moya, Physical Chemistry Chemical Physics, 2015

This work aims to extend the study of the formation of the electric double layer at the interface defined by a solution and an ion-exchange membrane on the basis of the Nernst–Planck and Poisson equations, including different values of the counter-ion diffusion coefficient and the dielectric ...

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Site-selective photodeposition of Pt on a particulate Sc-La5Ti2CuS5O7 photocathode: evidence for one-dimensional charge transfer

26-Feb-2015 | Guijun Ma; Jingyuan Liu; Takashi Hisatomi; Tsutomu Minegishi; Yosuke Moriya; Motoki Iwase; Hiroshi Nishiyama; Masao ..., Chemical Communication, 2015

Photodeposition of Pt on the Sc-doped La5Ti2CuS5O7 (Sc-LTC) photocathode, a visible-light-responsive semiconducting oxysulfide, is accomplished in a solution containing H2PtCl6 and K2C2O4. Pt particles are selectively deposited on the top surface of rod-like Sc-LTC particles as a result of ...

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On the urea induced hydrophobic collapse of a water soluble polymer

26-Feb-2015 | Francisco Rodríguez-Ropero; Nico F. A. van der Vegt, Physical Chemistry Chemical Physics, 2015

Stabilization of macromolecular folded states in solution by protective osmolytes has been traditionally explained on the basis of preferential osmolyte depletion from the macromolecule's first solvation shell. However recent theoretical and experimental studies suggest that protective osmolytes ...

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