Understanding the lateral movement of particles adsorbed at a solid–liquid interface

Savaji, Kunal; Li, Xue; Couzis, Alexander

doi:10.1016/j.jcis.2015.04.062

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…During the reaction, the carrier-adsorbed PC would have a tendency of parallel movement on the surface of carriers, forming a homogeneous PC distribution to decrease the free energy of the system. 27 Thus, from a practical viewpoint, acetone was added at one time to simplify the operational process.…”

Section: ■ Results and Discussionmentioning

confidence: 90%

“…This might be explained by silica gel 60H having a large surface area, suitable pore diameter, and affinity to organic macromolecules able to deal with a rapid adsorption of PC. During the reaction, the carrier-adsorbed PC would have a tendency of parallel movement on the surface of carriers, forming a homogeneous PC distribution to decrease the free energy of the system . Thus, from a practical viewpoint, acetone was added at one time to simplify the operational process.…”

Section: Resultsmentioning

confidence: 99%

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Aqueous–Solid System for Highly Efficient and Environmentally Friendly Transphosphatidylation Catalyzed by Phospholipase D To Produce Phosphatidylserine

Wang

Zhang

et al. 2016

J. Agric. Food Chem.

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The purely aqueous system of phospholipase D (PLD)-mediated transphosphatidylation using pre-existing carriers for the adsorption of phosphatidylcholine (PC) to act as an "artificial interface" was introduced to replace the liquid-liquid system. Toxic organic solvents are avoided during the reaction, and the free enzyme can be simply reused by centrifugation. Special attention has been paid to the effect of the pore diameter and surface area of silica gel 60H covered with PC molecules on the yield of phosphatidylserine (PS). Results indicated that the highest PS yield of 99.5% was achieved. Moreover, 73.6% of the yield of PS was obtained after being used for six batches. This is the first description of the remarkably high reusability of free enzymes for enzymatic synthesis of PS as well. The excellent results make the aqueous-solid system more promising candidates for the industrial production of PS.

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Section: ■ Results and Discussionmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Aqueous–Solid System for Highly Efficient and Environmentally Friendly Transphosphatidylation Catalyzed by Phospholipase D To Produce Phosphatidylserine

Wang

Zhang

et al. 2016

J. Agric. Food Chem.

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Highly efficient biosynthesis of phosphatidylserine by the surface adsorption-catalysis in purely aqueous media and mechanism study by biomolecular simulation

Wang

et al. 2021

Molecular Catalysis

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Applicability of the Langmuir Equation of State for Asphaltene Adsorption at the Oil–Water Interface: Coal-Derived, Petroleum, and Synthetic Asphaltenes

Rane¹,

Zarkar²,

Pauchard

et al. 2015

Energy Fuels

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Preparation of synthetic asphaltenes: a) 1,2-bis(4-bromophenyl)-3,4,5,6-tetraphenylbenzene A mixture of tetraphenylcyclopentadienone (5.0 mmol), and bis(p-bromophenyl) acetylene (5.0 mmol) in diphenyl ether (20 ml) was heated to 260 °C overnight. Then the temperature was raised to 270 °C. After 69 h, the reaction mixture was cooled, and methanol (100 ml) was added. After stirring for 1 h, the product was filtered off, washed with methanol, and finally dried in vacuum overnight. Yield: Quantitative. b) 1,2-bis(4-dodecylphenyl)-3,4,5,6-tetraphenylbenzene 1-dodecene (30.0 mmol) was slowly added to a 0.5 M solution of 9-borabicyclo[4.4.1] nonane in THF (65 ml), and the mixture was stirred at room temperature overnight. Then a solution of NaOH (45.0 mmol) in water (15 ml) was slowly added, and the mixture was stirred for 20 min. The dibromide (2.5 mmol) was added, followed by Pd(dppf)Cl2 (80 mg). The reaction mixture was stirred at room temperature for 5 h. Then TLC analysis indicated incomplete reaction, and the temperature was increased. After boiling at reflux overnight, the reaction mixture was cooled to room temperature and concentrated in vacuo. The residue was dissolved in CH2Cl2, washed with water and with brine, and then dried (Na2SO4). The dry solution was diluted with hexane, filtered thru celite, and concentrated in vacuo. Finally the product was purified by flash chromatography (SiO2, pentane w/ 5-10% CH2Cl2). Yield: 80 %. c) 2,5-didodecylhexaperihexabenzocoroneneThe didodecylhexaphenylbenzene (1.5 mmol) was dissolved in dry CH2Cl2 (750) ml, and argon was bubbled thru the solution for 15 min. Then anhydrous FeCl3 (45 mmol) dissolved in nitromethane (15 ml) was added, and the mixture was stirred at room temperature while being bubbled with argon. After 75 min, the reaction mixture was poured into methanol (1 l). The reaction mixture was then concentrated in vacuo to remove most of the CH2Cl2, and the precipitated product was filtered off, washed thoroughly with dilute hydrochloric acid and with methanol, and then dried in vacuo. The crude product was dissolved in hot THF, precipitated once again with methanol, and finally dried in vacuum overnight. Yield: 55 %.Confirmation of expected structure was first sought for by solid state NMR. 1H-MAS was performed to qualitatively evaluate the relative contribution of aromatic and aliphatic protons to the total resonance signal. 1H MAS solid state NMR signal shows that aromatic and aliphatic contributions are well separated. Deconvolution and integration of peaks leads to: Aliphatic protons: 72 %, Intermediate protons: 3 % Aromatic protons: 25 % The match with the expected structure (50-16 ratio between aliphatic and aromatic protons) appears to

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Understanding the lateral movement of particles adsorbed at a solid–liquid interface

Cited by 3 publications

References 11 publications

Aqueous–Solid System for Highly Efficient and Environmentally Friendly Transphosphatidylation Catalyzed by Phospholipase D To Produce Phosphatidylserine

Aqueous–Solid System for Highly Efficient and Environmentally Friendly Transphosphatidylation Catalyzed by Phospholipase D To Produce Phosphatidylserine

Highly efficient biosynthesis of phosphatidylserine by the surface adsorption-catalysis in purely aqueous media and mechanism study by biomolecular simulation

Applicability of the Langmuir Equation of State for Asphaltene Adsorption at the Oil–Water Interface: Coal-Derived, Petroleum, and Synthetic Asphaltenes

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