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46,192 Newest Publications about the topic solution

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Effect of counterion excluded volume on conformational behavior of polyelectrolyte chains

23-Jan-2018 | Yulia Gordievskaya; Alexey Andreevich Gavrilov; Elena Kramarenko, Soft Matter, 2018

Conformational behavior of a single strongly charged polyelectrolyte chain in a dilute solution is studied by molecular dynamics simulations. The novel feature of the model is variation of the excluded volume of counterions to investigate its effect on the chain conformation, especially in ...

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An integrated process for the production of 2,5-dihydroxymethylfuran and its polymer from fructose

23-Jan-2018 | Pravin P Upare; Young-Kyu Hwang; Dongwon Hwang, Green Chemistry, 2018

We report for the first time an integrated process for the selective production of 2,5-dihydroxymethylfuran (DHMF) from fructose via a two-step reaction in 1-butanol (BuOH). Fructose was initially dehydrated to 5-hydroxymethylfufural in >95 % yield using Amberlyst-15, and the resulting solution ...

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Lithiation of palladated dihydropentacene: a new route for the introduction of substituents from both of electrophiles and nucleophiles to pentacene

23-Jan-2018 | Yanqing Wang; Kiyohiko Nakajima; Zhiyi Song; Tamotsu Takahashi, Chemical Communication, 2018

Dibromodihydropentacene compound 1 was palladated and then lithiated to give a lithiated-palladated intermediate. Both of the lithium moiety and the palladium complex moiety on dihydropentacene unexpectedly survived in the solution. The Li and Pd moieties reacted with electrophiles and ...

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Sensors, Vol. 18, Pages 312: Online Removal of Baseline Shift with a Polynomial Function for Hemodynamic Monitoring Using Near-Infrared Spectroscopy

21-Jan-2018 | Zhao, Ke ; Ji, Yaoyao ; Li, Yan ; Li, Ting, Sensors, 2018

Sensors, Vol. 18, Pages 312: Online Removal of Baseline Shift with a Polynomial Function for Hemodynamic Monitoring Using Near-Infrared Spectroscopy Sensors doi: 10.3390/s18010312 Authors: Ke Zhao Yaoyao Ji Yan Li Ting Li Near-infrared spectroscopy (NIRS) has become widely ...

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Structure, physicochemical properties and pharmacokinetics of resveratrol and piperine cocrystals

20-Jan-2018 | Hongyan He; Qi Zhang; Jian-Rong Wang; Xuefeng Mei, CrystEngComm, 2018

It was reported that the alkaloid component piperine (Pip) can drastically improve the bioavailability of the compound resveratrol (RSV) when co-administered. Therefore, cocrystallization experiments of RSV and Pip were attempted, and four cocrystals are successfully obtained from solution ...

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PdCuCeO–TPAB: a new catalytic system for quasi-heterogeneous Suzuki–Miyaura cross-coupling reactions under ligand-free conditions in water

19-Jan-2018 | Philani P. Mpungose; Neo I. Sehloko; Glenn E. M. Maguire; Holger B. Friedrich, New Journal of Chemistry, 2018

In this contribution, we report a simple and clean method for preparation of a single-phase Pd0.04Cu0.04Ce0.92O2−δ (PdCuCeO) solid-solution oxide and its application in quasi-heterogeneous Suzuki–Miyaura cross-coupling reactions. The catalyst was characterised fully and all the characterisation ...

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PdCuCeO–TPAB: a new catalytic system for quasi-heterogeneous Suzuki–Miyaura cross-coupling reactions under ligand-free conditions in water

19-Jan-2018 | Philani P. Mpungose; Neo I. Sehloko; Glenn E. M. Maguire; Holger B. Friedrich, New Journal of Chemistry, 2018

In this contribution, we report a simple and clean method for preparation of a single-phase Pd0.04Cu0.04Ce0.92O2−δ (PdCuCeO) solid-solution oxide and its application in quasi-heterogeneous Suzuki–Miyaura cross-coupling reactions. The catalyst was characterised fully and all the characterisation ...

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Excited-states of a rhenium carbonyl diimine complex: solvation models, spin–orbit coupling, and vibrational sampling effects

19-Jan-2018 | Sebastian Mai; Hugo Gattuso; Maria Fumanal; Aurora Muñoz-Losa; Antonio Monari; Chantal Daniel; Leticia Gonz ..., Physical Chemistry Chemical Physics, 2018

We present a quantum-chemical investigation of the excited states of the complex [Re(CO)3(Im)(Phen)]+ (Im = imidazole; Phen = 1,10-phenanthroline) in solution including spin–orbit couplings and vibrational sampling. To this aim, we implemented electrostatic embedding quantum mechanics/molecular ...

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A novel methodology for fabrication of Ag–polypyrrole core–shell nanosphere using microemulsion system and evaluation of its antibacterial application

19-Jan-2018 | Alireza Salabat; Farid Mirhoseini; Mohammad Arjomandzadegan; Elham Jiryaei, New Journal of Chemistry, 2018

In this study, a new microemulsion route was applied to synthesize Ag–polypyrrole (PPy) core–shell nanospheres at room temperature. In this method, colloidal Ag nanoparticles, which were prepared in a water-in-pyrrole microemulsion, were added to the aqueous solution of CTAB to form a ...

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Uracil-bearing poly(2-isopropyl-2-oxazoline): Hg(II)-selective control of its thermoresponsiveness

19-Jan-2018 | Jaehyuk Nam; Yongseok Jung; Woo-Dong Jang, Chemical Communication, 2018

A poly(2-isopropyl-2-oxazoline)-containing mercury ion (Hg2+)-responsive uracil moiety (U-PiPOx-U) was synthesized and it exhibited thermoresponsiveness in its aqueous solution. The changes in the UV-Vis absorption and thermoresponsiveness of U-PiPOx-U upon the addition of Hg2+ were studied. ...

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