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Guerfi Z, Kribaa OK, Djouama H. Chemical-physical behavior of Hydroxyapatite: A modeling approach. J Mech Behav Biomed Mater 2024; 150:106229. [PMID: 38000164 DOI: 10.1016/j.jmbbm.2023.106229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023]
Abstract
Hydroxyapatite (HAp) is a ceramic composed of calcium phosphate, frequently employed as a bone substitute material due to its biocompatibility and bioactivity. Over the past century, there has been substantial attention in fields such as orthopedics and plastic surgery. Remarkably, synthetic HAp exhibits properties akin to those found in natural bone and teeth. Computational theoretical chemistry focuses on numerically computing molecular electronic structures and interactions. As chemistry education evolves, it's imperative to acknowledge the increasing significance of computational tools in research. Density Functional Theory (DFT) stands out as the most widely adopted method in contemporary computational chemistry. In this study, we synthesized Hydroxyapatite (HAp) via the double decomposition method using synthetic sources. The synthesized materials underwent thorough characterization, including X-ray Diffraction (XRD), UV-visible spectroscopy, and Fourier Transform Infrared (FTIR) spectroscopy under various conditions. Additionally, we performed quantum mechanical computations on the HAp molecule using density functional theory. Our results were then compared with experimental data. Our experimental findings highlight the successful synthesis of HAp, particularly under specific temperature conditions. Moreover, the quantum chemistry calculations exhibited excellent agreement with the experimental results, especially in terms of spectroscopic characterizations.
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Affiliation(s)
- Ziad Guerfi
- "LCA" Applied Chemistry Laboratory, Mohamed Khider Biskra University, Biskra, Algeria
| | - Oum Keltoum Kribaa
- "LCA" Applied Chemistry Laboratory, Mohamed Khider Biskra University, Biskra, Algeria.
| | - Hanane Djouama
- "LCA" Applied Chemistry Laboratory, Mohamed Khider Biskra University, Biskra, Algeria
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2
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Lavilla I, Romero V, Costas P, Bendicho C. Kinetic spectrophotometric assay for the determination of vitamin C in cosmetics following ultrasound-assisted emulsification. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:951-958. [PMID: 36723195 DOI: 10.1039/d2ay01795d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this work, a new analytical approach based on ultrasound-assisted emulsification followed by a photoreaction with methylene blue (MB) and kinetic analysis by UV-vis spectrophotometry has been developed for the determination of L-ascorbic acid (AA) in cosmetic samples. The emulsification of cosmetic samples results in a transparent solution that allows an easy and rapid quantitation by UV-vis spectrophotometry. The emulsified sample is mixed with a MB aqueous solution and this mixture is subjected to irradiation with a tungsten lamp for 5 min (fixed-time kinetic assay). A reduction in the MB absorbance intensity at 664 nm occurs as the concentration of AA increases. The observed change in absorbance intensity was used for calibration and further quantitation using the relationship of absorbance logarithm vs. AA concentration (μg mL-1). In order to achieve an optimal response, different parameters involved in the reaction between AA and MB were fully investigated. Under optimal conditions, the limits of detection and quantification were 0.04 μg mL-1 and 0.15 μg mL-1, respectively. Repeatability and reproducibility, expressed as relative standard deviation, were in the range of 0.4-0.6% and 0.6-1.5%, respectively. Finally, the proposed method was applied to the analysis of 15 cosmetic samples, namely, (i) 12 samples without AA, which were used to carry out recovery studies, obtaining results in the range of 97.5-100.7%; (ii) 3 serum samples containing pure AA among their ingredients, which were used for AA stability studies.
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Affiliation(s)
- Isela Lavilla
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica y Alimentaria, QA2 group, Vigo, 36310, Spain.
| | - Vanesa Romero
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica y Alimentaria, QA2 group, Vigo, 36310, Spain.
| | - Paula Costas
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica y Alimentaria, QA2 group, Vigo, 36310, Spain.
| | - Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica y Alimentaria, QA2 group, Vigo, 36310, Spain.
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3
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Transition Metal Catalyzed Hiyama Cross-Coupling: Recent Methodology Developments and Synthetic Applications. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27175654. [PMID: 36080422 PMCID: PMC9458230 DOI: 10.3390/molecules27175654] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022]
Abstract
Hiyama cross-coupling is a versatile reaction in synthetic organic chemistry for the construction of carbon-carbon bonds. It involves the coupling of organosilicons with organic halides using transition metal catalysts in good yields and high enantioselectivities. In recent years, hectic progress has been made by researchers toward the synthesis of diversified natural products and pharmaceutical drugs using the Hiyama coupling reaction. This review emphasizes the recent synthetic developments and applications of Hiyama cross-coupling.
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4
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Kaurin T, Pušić T, Čurlin M. Biopolymer Textile Structure of Chitosan with Polyester. Polymers (Basel) 2022; 14:polym14153088. [PMID: 35956601 PMCID: PMC9370276 DOI: 10.3390/polym14153088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/22/2022] [Accepted: 07/27/2022] [Indexed: 12/28/2022] Open
Abstract
The research deals with functionalization of a standard polyester fabric with biopolymer chitosan, whose premises are multifunctional and favour ecological effects. Due to the incompatibility of synthetic and natural polymers, the chitosan treatment was preceded by alkaline hydrolysis with sodium hydroxide with the addition of cationic and anionic surfactants as promoters. Compatibility of the chitosan with untreated and alkali-hydrolyzed fabrics was performed by analysis of mechanical and physico-chemical properties. The number of characterisation procedures performed required the use of hierarchical cluster analysis (HCA) to identify homogeneous groups or clusters in which similarities and differences between samples are visible. Almost all applied methods and evaluation parameters have shown that alkaline hydrolysis of polyester fabric has the best potential for functionalization with chitosan. Therefore, the addition of surfactants as promoters during alkaline hydrolysis is not necessary in the pretreatment process phase.
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Affiliation(s)
- Tea Kaurin
- University of Zagreb, Faculty of Textile Technology, Prilaz Baruna Filipovića 28a, 10000 Zagreb, Croatia;
| | - Tanja Pušić
- University of Zagreb, Faculty of Textile Technology, Prilaz Baruna Filipovića 28a, 10000 Zagreb, Croatia;
- Correspondence:
| | - Mirjana Čurlin
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia;
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5
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Mangia LHR, Ferraz HC, Pinto JC. Stabilization of Aqueous MMA Emulsions Using Mixtures of Surfactants and Implications on MMA Miniemulsion Polymerizations. MACROMOL REACT ENG 2022. [DOI: 10.1002/mren.202200036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lys Hamond Regua Mangia
- Universidade Federal do Rio de Janeiro, Programa de Engenharia Química / COPPE, Cidade Universitária CP:68502 Rio de Janeiro RJ 21941‐972 Brazil
| | - Helen Conceição Ferraz
- Universidade Federal do Rio de Janeiro, Programa de Engenharia Química / COPPE, Cidade Universitária CP:68502 Rio de Janeiro RJ 21941‐972 Brazil
| | - José Carlos Pinto
- Universidade Federal do Rio de Janeiro, Programa de Engenharia Química / COPPE, Cidade Universitária CP:68502 Rio de Janeiro RJ 21941‐972 Brazil
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6
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Akhter Bhuiyan H, Abdul Rub M, Mahbub S, Tuhinur R. Joy M, Al Mamun A, Kumar D, Asiri AM, Anamul Hoque M, Kabir SE. Aggregation and thermodynamic study of bovine serum albumin + cationic surfactant mixture in short chain alcoholic media: Effect of composition and temperature. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2022.101451] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Chang F, Vis CM, Bergmeijer M, Howes SC, Bruijnincx PCA. Bifunctional Janus Silica Spheres for Pickering Interfacial Tandem Catalysis. CHEMSUSCHEM 2021; 14:5328-5335. [PMID: 34668343 PMCID: PMC9297878 DOI: 10.1002/cssc.202101238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/18/2021] [Indexed: 05/05/2023]
Abstract
Nature provides much inspiration for the design of multistep conversion processes, with numerous reactions running simultaneously and without interference in cells, for example. A key challenge in mimicking nature's strategies is to compartmentalize incompatible reagents and catalysts, for example, for tandem catalysis. Here, we present a new strategy for antagonistic catalyst compartmentalization. The synthesis of bifunctional Janus catalyst particles carrying acid and base groups on the particle's opposite patches is reported as is their application as acid-base catalysts in oil/water emulsions. The synthesis strategy involved the use of monodisperse, hydrophobic and amine-functionalized silica particles (SiO2 -NH2 -OSi(CH3 )3 ) to prepare an oil-in-water Pickering emulsion (PE) with molten paraffin wax. After solidification, the exposed patch of the silica particles was selectively etched and refunctionalized with acid groups to yield acid-base Janus particles (Janus A-B). These materials were successfully applied in biphasic Pickering interfacial catalysis for the tandem dehydration-Knoevenagel condensation of fructose to 5-(hydroxymethyl)furfural-2-diethylmalonate (5-HMF-DEM) in a water/4-propylguaiacol PE. The results demonstrate the advantage of rapid extraction of 5-hydroxymethylfurfural (5-HMF), a prominent platform molecule prone to side product formation in acidic media. A simple strategy to tune the acid/base balance using PE with both Janus A-B and monofunctional SiO2 -NH2 -OSi(CH3 )3 base catalysts proved effective for antagonistic tandem catalysis.
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Affiliation(s)
- Fuqiang Chang
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Carolien M. Vis
- Inorganic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Menno Bergmeijer
- Structural BiochemistryBijvoet Centre for Biomolecular ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Stuart C. Howes
- Structural BiochemistryBijvoet Centre for Biomolecular ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Pieter C. A. Bruijnincx
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
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Cheng Y, Hall DM, Boualavong J, Hickey RJ, Lvov SN, Gorski CA. Influence of Hydrotropes on the Solubilities and Diffusivities of Redox-Active Organic Compounds for Aqueous Flow Batteries. ACS OMEGA 2021; 6:30800-30810. [PMID: 34805708 PMCID: PMC8600646 DOI: 10.1021/acsomega.1c05133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
In this study, we explored the extent to which hydrotropes can be used to increase the aqueous solubilities of redox-active compounds previously used in flow batteries. We measured how five hydrotropes influenced the solubilities of five redox-active compounds already soluble in aqueous electrolytes (≥0.5 M). The solubilities of the compounds varied as a function of hydrotrope type and concentration, with larger solubility changes observed at higher hydrotrope concentrations. 4-OH-TEMPO underwent the largest solubility increase (1.18 ± 0.04 to 1.99 ± 0.12 M) in 20 weight percent sodium xylene sulfonate. The presence of a hydrotrope in solution decreased the diffusion coefficients of 4-OH-TEMPO and 4,5-dihydroxy-1,3-benzenedisulfonate, which was likely due to the increased solution viscosity as opposed to a specific hydrotrope-solute interaction because the hydrotropes did not alter their molecules' hydraulic radii. The standard rate constants and formal potentials of both 4-OH-TEMPO and 4,5-dihydroxy-1,3-benzenedisulfonate remained largely unchanged in the presence of a hydrotrope. The results suggest that using hydrotropes may be a feasible strategy for increasing the solubilities of redox-active compounds in aqueous flow batteries without substantially altering their electrochemical properties.
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Affiliation(s)
- Yingchi Cheng
- Department
of Civil and Environmental Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Derek M. Hall
- Department
of Energy and Mineral Engineering, Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
- Earth
and Mineral Sciences Energy Institute, Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
| | - Jonathan Boualavong
- Department
of Civil and Environmental Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Robert J. Hickey
- Department
of Material Sciences and Engineering, Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
| | - Serguei N. Lvov
- Department
of Energy and Mineral Engineering, Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
- Earth
and Mineral Sciences Energy Institute, Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
- Department
of Material Sciences and Engineering, Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
| | - Christopher A. Gorski
- Department
of Civil and Environmental Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
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9
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Suzuki N, Koyama S, Koike R, Ebara N, Arai R, Takeoka Y, Rikukawa M, Tsai FY. Palladium-Catalyzed Mizoroki-Heck and Copper-Free Sonogashira Coupling Reactions in Water Using Thermoresponsive Polymer Micelles. Polymers (Basel) 2021; 13:2717. [PMID: 34451255 PMCID: PMC8402173 DOI: 10.3390/polym13162717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/09/2021] [Accepted: 08/10/2021] [Indexed: 12/20/2022] Open
Abstract
A few kinds of thermoresponsive diblock copolymers have been synthesized and utilized for palladium-catalyzed coupling reactions in water. Poly(N-isopropylacrylamide) (PNIPAAm) and poly(N,N-diethylacrylamide) (PDEAAm) are employed for thermoresponsive segments and poly(sodium 4-styrenesulfonate) (PSSNa) and poly(sodium 2-acrylamido-methylpropanesulfonate) (PAMPSNa) are employed for hydrophilic segments. Palladium-catalyzed Mizoroki-Heck reactions are performed in water and the efficiency of the extraction process is studied. More efficient extraction was observed for the PDEAAm copolymers when compared with the PNIPAAm copolymers and conventional surfactants. In the study of the Sonogashira coupling reactions in water, aggregative precipitation of the products was observed. Washing the precipitate with water gave the product with satisfactory purity with a good yield.
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Affiliation(s)
- Noriyuki Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Shun Koyama
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Rina Koike
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Nozomu Ebara
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Rikito Arai
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Yuko Takeoka
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Masahiro Rikukawa
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan; (S.K.); (R.K.); (N.E.); (R.A.); (Y.T.); (M.R.)
| | - Fu-Yu Tsai
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan
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10
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Kushnazarova RA, Mirgorodskaya AB, Kuznetsov DM, Tyryshkina AA, Voloshina AD, Gumerova SK, Lenina OA, Nikitin EN, Zakharova LY. Modulation of aggregation behavior, antimicrobial properties and catalytic activity of piperidinium surfactants by modifying their head group with a polar fragment. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116318] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Belousova IA, Zubareva TM, Gaidash TS, Razumova NG, Turovskaya MK, Panchenko BV, Prokop’eva TM, Mikhailov VA. Reactivity of Inorganic α-Nucleophiles in Acyl Transfer
Processes in Water and Surfactant Micelles: III. Systems Based on Dimeric Cationic
Imidazolium Surfactants in Alkaline Hydrolysis of Ethyl 4-Nitrophenyl
Ethylphosphonate. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021030039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Gholap SS, Kadu VR. Natural surfactants assisted an efficient synthesis of tetrahydro-β-carbolines. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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13
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Pashirova TN, Fetin PA, Lezov AA, Kadnikov MV, Valeeva FG, Burilova EA, Bilibin AY, Zorin IM. Self-Assembled Quaternary Ammonium-Containing Comb-Like Polyelectrolytes for the Hydrolysis of Organophosphorous Esters: Effect of Head Groups and Counter-Ions. Chempluschem 2020; 85:1939-1948. [PMID: 32865345 DOI: 10.1002/cplu.202000417] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/27/2020] [Indexed: 12/17/2022]
Abstract
The aim of this work was to increase the efficiency of catalytic systems for the hydrolytic cleavage of 4-nitrophenyl esters of phosphonic acids. Quaternary ammonium-containing comb-like polyelectrolytes («polymerized micelles») with ester cleavable fragments and a low aggregation threshold were used as catalysts. The synthesis of poly(11-acryloyloxyundecylammonium) surfactants with different counterions (Br- , NO3 - , CH3 C6 H4 SO3 - ) and head groups was realized by micellar free-radical polymerization. Molecular weight, critical association concentration, particle sizes and solubilization properties toward Orange OT were determined. Self-assemblies organized by poly(11-acryloyloxyundecyltrimethyl ammonium) bromide successfully catalyze the hydrolysis of 4-nitrophenyl butylchloromethylphosphonate up to two orders of magnitude compared to aqueous alkaline hydrolysis. The development of these catalysts is promising for industrial applications and organophosphorus compound detoxification.
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Affiliation(s)
- Tatiana N Pashirova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Petr A Fetin
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya nab, St., Petersburg, 199034, Russian Federation
| | - Alexey A Lezov
- Department of Molecular Biophysics and Polymer Physics, Physical Faculty, St. Petersburg State University, 7/9 Universitetskaya nab, St., Petersburg, 199034, Russian Federation
| | - Matvey V Kadnikov
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya nab, St., Petersburg, 199034, Russian Federation
| | - Farida G Valeeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Evgenia A Burilova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov St., 8, Kazan, 420088, Russian Federation
| | - Alexander Yu Bilibin
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya nab, St., Petersburg, 199034, Russian Federation
| | - Ivan M Zorin
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya nab, St., Petersburg, 199034, Russian Federation
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14
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Aqueous extract of Shikakai; a green solvent for deoximation reaction: Mechanistic approach from experimental to theoretical. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113133] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Zubareva TM, Belousova IA, Prokop’eva TM, Gaidash TS, Razumova NG, Panchenko BV, Mikhailov VA. Reactivity of Inorganic α-Nucleophiles in Acyl Group Transfer Processes in Water and Surfactant Micelles: II.1 Alkaline Hydrolysis of Ethyl 4-Nitrophenyl Ethylphosphonate in Systems Based on Dimeric Cationic Surfactants. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020010091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Kinetic study of the metal-dipeptide complex with ninhydrin facilitated by gemini (m-s-m) surfactant micelles. Sci Rep 2020; 10:4088. [PMID: 32139867 PMCID: PMC7058053 DOI: 10.1038/s41598-020-61001-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/18/2020] [Indexed: 11/08/2022] Open
Abstract
The three Gemini (m-s-m; m (head group) = 16 and s (spacer) = 4, 5, 6) surfactants have been synthesized and their impact on reaction of zinc(II)-glycylleucine complex ([Zn(II)-Gly-Leu]+) and ninhydrin were studied at temperature (343 K) and pH (5.0) using spectroscopic method. Influence of several factors, viz., [Zn(II)-Gly-Leu]+, [ninhydrin], temperature and pH were also carried out on title reaction in geminis. Rates of reaction are the first-order path in concentration of [Zn(II)-Gly-Leu]+ complex and fractional order path in concentration of ninhydrin. The catalysis of gemini 16-s-16 surfactant micelles was investigated below and above their critical micelle concentration (cmc) value and detailed elaboration were provided in the text. In the present case, rate constants, kψ, increased on increasing geminis ([gemini] are below their cmc, region I) and stayed nearly constant (region II). The shape of (region I and II) surfactants ([gemini] = 0 to 400 × 10-5 mol dm-3) are similar to a cetyltrimethylammonium bromide, CTAB (single hydrophilic head group and hydrophobic part). Later, a sharp increment in rate was observed with higher [gemini] (region III, (Fig. 5). The study was catalyzed and accelerated quite enough by geminis (at concentrations below their cmc) compared to aqueous. An appropriate mechanism has been proposed for accounting for the distribution of reactants between aqueous and micellar pseudo phases. Resulting kinetic data were used to determine the binding constants of micelle-substrate (KB) and micelle-ninhydrin (KNin).
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17
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Gupta S, Bera S, Mondal D. Nascent-HBr-Catalyzed Removal of Orthogonal Protecting Groups in Aqueous Surfactants. J Org Chem 2020; 85:2635-2645. [PMID: 31875403 DOI: 10.1021/acs.joc.9b02561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Organic reactions in the aqueous environment have recently emerged as a promising research area. The generation of nascent-HBr from the slow hydrolysis of the dispersed catalyst, benzyl bromide, with the interior water present in the hydrophobic core of the confined micellar medium in aqueous surfactant is described for the first time. The sustained-release nascent-HBr enabled the chemoselective cleavages of acid-sensitive orthogonal functionalities present in carbohydrates, amino alcohols, and hydroxylated acyclic compounds in good to excellent yields.
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Affiliation(s)
- Shilpi Gupta
- School of Chemical Sciences , Central University of Gujarat , Gandhinagar - 382030 , India
| | - Smritilekha Bera
- School of Chemical Sciences , Central University of Gujarat , Gandhinagar - 382030 , India
| | - Dhananjoy Mondal
- School of Chemical Sciences , Central University of Gujarat , Gandhinagar - 382030 , India
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18
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Unlocking the Secret of Bio-additive Components in Rubber Compounding in Processing Quality Nitrile Glove. Appl Biochem Biotechnol 2020; 191:1-28. [DOI: 10.1007/s12010-019-03207-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/05/2019] [Indexed: 12/25/2022]
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19
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Li M, He Y, Meng H, Dong Y, Shang Y, Liu H, Qu Z, Liu Y. Multiple effects of sodium dodecyl sulfate on chromogenic catalysis of tetramethylbenzidine with horseradish peroxidase. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1702050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Meng Li
- Key Laboratory of Cosmetic, China National Light Industry, School of Science, Beijing Technology and Business University, Beijing, China
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Yifan He
- Key Laboratory of Cosmetic, China National Light Industry, School of Science, Beijing Technology and Business University, Beijing, China
| | - Hong Meng
- Key Laboratory of Cosmetic, China National Light Industry, School of Science, Beijing Technology and Business University, Beijing, China
| | - Yinmao Dong
- Key Laboratory of Cosmetic, China National Light Industry, School of Science, Beijing Technology and Business University, Beijing, China
| | - Yazhuo Shang
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Honglai Liu
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Zhaohui Qu
- Nutri-Woods Bio-Tech (Beijing) Co., Ltd, Beijing, China
| | - Youting Liu
- Nutri-Woods Bio-Tech (Beijing) Co., Ltd, Beijing, China
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20
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Bhosle MR, Joshi SA, Bondle GM. An efficient contemporary multicomponent synthesis for the facile access to coumarin‐fused new thiazolyl chromeno[4,3‐
b
]quinolones in aqueous micellar medium. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3802] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Manisha R. Bhosle
- Department of ChemistryDr. Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra 431004 India
| | - Supriya A. Joshi
- Department of ChemistryDr. Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra 431004 India
| | - Giribala M. Bondle
- Department of ChemistryDr. Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra 431004 India
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21
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Rahman F, Rafiquee M. Influence of polyethylene glycol and surfactant mixed system on the rate of alkaline hydrolysis of benzocaine. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Surfactant-Assisted Fabrication of Alumina-Doped Amorphous Silica Nanofiltration Membranes with Enhanced Water Purification Performances. NANOMATERIALS 2019; 9:nano9101368. [PMID: 31554232 PMCID: PMC6836250 DOI: 10.3390/nano9101368] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/17/2019] [Accepted: 09/20/2019] [Indexed: 11/16/2022]
Abstract
Surfactant-templated 5 mol% Al2O3-doped silica membranes nanofiltration membranes were synthesized via the sol-gel method, and afterward, were optimized, and tested with respect to the permeability and rejection rate. The disordered silica network was stabilized by doping 5 mol% alumina. Tetraethyl orthosilicate and aluminum isopropoxide were used as the silica and alumina precursors, respectively. Cetyltrimethylammonium bromide (CTAB) was used not only as a pore-forming agent, but also to control the reaction rate of the aluminum isopropoxide, thus obtaining highly homogeneous materials. The results about filtration of model solutions showed that the optimized membranes are featured by both a relatively high water permeability (1.1–2.3 L·m−2·h−1 ·bar−1) and a high rejection for salts (74% for NaCl, and >95% for MgSO4 and Na2SO4) and organic pollutants (e.g., about 98% for caffeine). High rejection of divalent ions and organic molecules was also observed when a real wastewater effluent was filtered. The influence of the synthesis conditions on the membrane performance is discussed.
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23
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Tarif E, Saha B, Mukherjee K, De P, Biswas R. Exploring Aqueous Solution Dynamics of an Amphiphilic Diblock Copolymer: Dielectric Relaxation and Time-Resolved Fluorescence Measurements. J Phys Chem B 2019; 123:5892-5901. [DOI: 10.1021/acs.jpcb.9b00889] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ejaj Tarif
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
| | - Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia 741246, West Bengal, India
| | - Kallol Mukherjee
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia 741246, West Bengal, India
| | - Ranjit Biswas
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
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24
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Aharwar A, Parihar DK. Talaromyces verruculosus tannase production, characterization and application in fruit juices detannification. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.01.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Hu TM, Lin CY, Wu MJ. Kinetics of fluoride-catalysed synthesis of organosilica colloids in aqueous solutions of amphiphiles. RSC Adv 2019; 9:28028-28037. [PMID: 35530447 PMCID: PMC9070784 DOI: 10.1039/c9ra05509f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 08/29/2019] [Indexed: 01/15/2023] Open
Abstract
Reactions involving hydrophobic reactants in water can be much accelerated in organic solvent-free solutions containing amphiphiles at neutral pH and room temperature. Previously, we demonstrated that organosilica colloidal particles could be conveniently synthesized by a versatile salt-catalysis method in solutions modified with various amphiphilic molecules. The method precludes the use of any solvent, any added form of energy (thermal or mechanical), and any strong (or hazardous) acids/bases. Herein, the kinetic properties of the reaction were systematically investigated for fluoride-catalysed synthesis of colloidal organosilica from a thiol-functionalized organosilane precursor, (3-mercaptopropyl)trimethoxysilane. Continuous, real-time ATR-FTIR measurements allowed probing the time evolution of organosilica condensation in different reaction systems, containing one of the following: non-ionic surfactants (Tween 20, Tween 40, Tween 60, Tween 80, Triton X-100), anionic surfactant (sodium dodecyl sulphate; SDS), cationic surfactant (cetyltrimethylammonium bromide; CTAB), and amphiphilic polymers (polyvinyl alcohol and polyvinylpyrrolidone). Overall, while some amphiphile-specific properties were revealed, fluoride-catalysed synthesis was ultrafast with a universal two-phase kinetic scheme (e.g. transition within 5–10 min) for all amphiphiles studied. Systematic real-time ATR-FTIR studies reveal ultrafast two-phase kinetics of sodium fluoride-catalysed synthesis of organosilica colloids in purely aqueous, amphiphile-assisted systems.![]()
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Affiliation(s)
- Teh-Min Hu
- Faculty of Pharmacy
- School of Pharmaceutical Sciences
- National Yang-Ming University
- Taipei 112
- Taiwan
| | - Chien-Yu Lin
- Faculty of Pharmacy
- School of Pharmaceutical Sciences
- National Yang-Ming University
- Taipei 112
- Taiwan
| | - Meng-Ju Wu
- Faculty of Pharmacy
- School of Pharmaceutical Sciences
- National Yang-Ming University
- Taipei 112
- Taiwan
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26
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Comparison of dye (oxazine and thiazine) materials as a photosensitizer for use in photogalvanic cells based on molecular interaction with sodium dodecyl sulphate by spectral study. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Laguta AN, Eltsov SV, Mchedlov-Petrossyan NO. Kinetics of alkaline fading of methyl violet in micellar solutions of surfactants: Comparing Piszkiewicz's, Berezin's, and pseudophase ion-exchange models. INT J CHEM KINET 2018. [DOI: 10.1002/kin.21231] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anna N. Laguta
- Department of Physical Chemistry; Kharkov V. N. Karazin National University; Kharkov Ukraine
| | - Sergey V. Eltsov
- Department of Physical Chemistry; Kharkov V. N. Karazin National University; Kharkov Ukraine
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28
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Schmidt M, Schreiber S, Franz L, Langhoff H, Farhang A, Horstmann M, Drexler HJ, Heller D, Schwarze M. Hydrogenation of Itaconic Acid in Micellar Solutions: Catalyst Recycling with Cloud Point Extraction? Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03313] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcel Schmidt
- Technische Universität Berlin, Department of Chemistry, Sekr. TC-8, Strasse des 17. Juni 124, Berlin, D-10623, Germany
| | - Saskia Schreiber
- Technische Universität Berlin, Department of Chemistry, Sekr. TC-8, Strasse des 17. Juni 124, Berlin, D-10623, Germany
| | - Luise Franz
- Technische Universität Berlin, Department of Chemistry, Sekr. TC-8, Strasse des 17. Juni 124, Berlin, D-10623, Germany
| | - Hauke Langhoff
- Technische Universität Berlin, Department of Chemistry, Sekr. TC-8, Strasse des 17. Juni 124, Berlin, D-10623, Germany
| | - Ashkan Farhang
- Technische Universität Berlin, Department of Chemistry, Sekr. TC-8, Strasse des 17. Juni 124, Berlin, D-10623, Germany
| | - Moritz Horstmann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, Rostock, D-18059, Germany
| | - Hans-Joachim Drexler
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, Rostock, D-18059, Germany
| | - Detlef Heller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, Rostock, D-18059, Germany
| | - Michael Schwarze
- Technische Universität Berlin, Department of Chemistry, Sekr. TC-8, Strasse des 17. Juni 124, Berlin, D-10623, Germany
- Technische Universität Berlin, Department of Process Engineering, Sekr. TK-01, Strasse des 17. Juni 135, Berlin, D-10623, Germany
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29
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Schmidt M, Deckwerth J, Schomäcker R, Schwarze M. Alkaline Hydrolysis of Methyl Decanoate in Surfactant-Based Systems. J Org Chem 2018; 83:7398-7406. [PMID: 29762024 DOI: 10.1021/acs.joc.8b00247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Surfactant-modified reaction systems are one approach to perform organic reactions with water as the solvent involving hydrophobic reactants. Herein, the alkaline hydrolysis of the long-chain methyl decanoate in cationic and nonionic surfactant-modified systems is reported. The physicochemical behavior of the reaction mixture and the performance of the alkaline hydrolysis were systematically investigated. In water as the solvent, the reaction is slow, but at elevated temperatures, the alkaline hydrolysis of methyl decanoate is accelerated because the reaction product sodium decanoate acts as an ionic surfactant, leading to an increased solubility of methyl decanoate in the aqueous phase. The rate can be significantly increased by the addition of surfactants as solubilizers. In nonionic TX-100 solutions, the reaction rate can be increased by a factor of about 100 for a surfactant concentration of 5 wt %. If cationic surfactants are applied, the reaction rate can be further increased due to the electrostatic interaction between the hydroxide ions in solution and the charged head groups of the cationic micelles.
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Affiliation(s)
- Marcel Schmidt
- Department of Chemistry , Technische Universität Berlin , Strasse des 17. Juni 124, Sekretariat TC-8 , Berlin D-10623 , Germany
| | - Johannes Deckwerth
- Department of Chemistry , Technische Universität Berlin , Strasse des 17. Juni 124, Sekretariat TC-8 , Berlin D-10623 , Germany
| | - Reinhard Schomäcker
- Department of Chemistry , Technische Universität Berlin , Strasse des 17. Juni 124, Sekretariat TC-8 , Berlin D-10623 , Germany
| | - Michael Schwarze
- Department of Process Engineering , Technische Universität Berlin , Strasse des 17. Juni 135, Sekretariat TK-01 , Berlin D-10623 , Germany
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30
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31
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Chhetri N, Bhoite SA, Singh AK. Micellar catalyzed hydrolysis of mono-2,3-dichloroaniline phosphate. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2017.1379022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Nisha Chhetri
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - S. A. Bhoite
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - A. K. Singh
- Department of Chemistry, Government V. Y. T. P.G. Autonomous College, Durg, Chhattisgarh, India
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32
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Raees K, Ansari MS, Rafiquee M. Synergistic influence of inhibition of PEG-surfactant on the rate of alkaline hydrolysis of procaine. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Bahram M, Mojarrad S, Moghtader M. Simultaneous kinetic–spectrophotometric determination of mycophenolate mofetil and mycophenolic acid based on complexation with Fe(III) using chemometric techniques. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-017-1276-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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34
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Kumar N, Goyal RN. A Simple and Highly Selective Determination of Telmisartan at Sodium Dodecyl Sulfate Modified Pyrolytic Graphite Surface. ELECTROANAL 2018. [DOI: 10.1002/elan.201700764] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Neeraj Kumar
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee - 247 667 India
| | - Rajendra N. Goyal
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee - 247 667 India
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35
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Belhocine S, Benabdallah T, Youcef MH, Reffas H. Influence of Micellar Media on Extraction of Copper(II) from Sulphate and Chloride Solutions using an N,N′-Bis(salicylideneaminoethyl)amine Multidentate Schiff Base. TENSIDE SURFACT DET 2018. [DOI: 10.3139/113.110536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The extraction properties of several organic ligands in micellar media have been investigated. In this paper, the extraction behavior of Schiff base ligand N,N′-bis(salicylideneaminoethyl)amine (H2SALDIEN) in the presence and absence of ionic surfactants in concentrated sulphate and chloride media has been studied. The physicochemical properties of H2SALDIEN, namely acidity, distribution, and extraction power were determined in pure water-chloroforme mixture (50 : 50) and in presence of sodium dodecyl sulphate (SDS) and cetyltrimethyl ammonium bromide (CTAB) micelles and were compared. The best distribution of H2SALDIEN occurs at low acidity and at high concentrations of SDS. Conversely, in the case of CTAB the best distribution is observed at low concentrations of surfactant and at the lowest acidity. The recovery of copper(II) from highly concentrated sulphate and chloride solutions was shown to be exalted with synergistic SDS- and CTAB-H2SALDIEN micellar mixtures using solvent extraction technique. Generally, the synergistic extraction seems to be more pronounced in presence of SDS compared with CTAB in both chloride and sulphate media.
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36
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López-López M, López-Cornejo P, Lebrón JA, Ostos FJ, Moyá ML. Binding and reactivity under restricted geometry conditions: Applicability of the Pseudophase Model to thermal and photochemical processes. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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37
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Triton X-100 stabilized Pd nanoparticles and their catalytic application in one-pot sequential Heck and Hiyama coupling in water. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3102-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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38
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Taghavikish M, Subianto S, Dutta NK, de Campo L, Mata JP, Rehm C, Choudhury NR. Polymeric Ionic Liquid Nanoparticle Emulsions as a Corrosion Inhibitor in Anticorrosion Coatings. ACS OMEGA 2016; 1:29-40. [PMID: 31457116 PMCID: PMC6640733 DOI: 10.1021/acsomega.6b00027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 06/15/2016] [Indexed: 05/12/2023]
Abstract
In this contribution, we report the facile preparation of cross-linked polymerizable ionic liquid (PIL)-based nanoparticles via thiol-ene photopolymerization in a miniemulsion. The synthesized PIL nanoparticles with a diameter of about 200 nm were fully characterized with regard to their chemical structures, morphologies, and properties using different techniques, such as Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and transmission electron microscopy. To gain an in-depth understanding of the physical and morphological structures of the PIL nanoparticles in an emulsion, small-angle neutron scattering and ultra-small-angle neutron scattering were used. Neutron scattering studies revealed valuable information regarding the formation of cylindrical ionic micelles in the spherical nanoparticles, which is a unique property of this system. Furthermore, the PIL nanoparticle emulsion was utilized as an inhibitor in a self-assembled nanophase particle (SNAP) coating. The corrosion protection ability of the resultant coating was examined using potentiodynamic polarization and electrochemical impedance spectroscopy. The results show that the PIL nanoparticle emulsion in the SNAP coating acts as an inhibitor of corrosion and is promising for fabricating advanced coatings with improved barrier function and corrosion protection.
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Affiliation(s)
- Mona Taghavikish
- Future
Industries Institute, Mawson Lakes Campus, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
| | - Surya Subianto
- Future
Industries Institute, Mawson Lakes Campus, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
| | - Naba Kumar Dutta
- Future
Industries Institute, Mawson Lakes Campus, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
- School
of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia
| | - Liliana de Campo
- Bragg
Institute, ANSTO, New
Illawarra Rd, Lucas Heights, Sydney, NSW 2234, Australia
| | - Jitendra P. Mata
- Bragg
Institute, ANSTO, New
Illawarra Rd, Lucas Heights, Sydney, NSW 2234, Australia
| | - Christine Rehm
- Bragg
Institute, ANSTO, New
Illawarra Rd, Lucas Heights, Sydney, NSW 2234, Australia
| | - Namita Roy Choudhury
- Future
Industries Institute, Mawson Lakes Campus, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
- School
of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia
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39
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Combination of Sodium Dodecylsulfate and 2,2′-Bipyridine for Hundred Fold Rate Enhancement of Chromium(VI) Oxidation of Malonic Acid at Room Temperature: A Greener Approach. J SOLUTION CHEM 2016. [DOI: 10.1007/s10953-016-0494-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Ghosh A, Das P, Saha D, Sar P, Ghosh SK, Saha B. Rate enhancement via sodium dodecyl sulfate (SDS) encapsulation of metal-mediated cerium(IV) oxidation of d-mannitol to d-mannose at room temperature and pressure: a kinetic and mechanistic approach. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2171-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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41
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Alexy EJ, Hintz CW, Hughes HM, Taniguchi M, Lindsey JS. Paley's watchmaker analogy and prebiotic synthetic chemistry in surfactant assemblies. Formaldehyde scavenging by pyrroles leading to porphyrins as a case study. Org Biomol Chem 2015; 13:10025-31. [DOI: 10.1039/c5ob01409c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Facile exchange of micromolar dialkylpyrrolic constituents among a Poisson distribution of aqueous micelles overcomes immense statistical odds against reaction.
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Affiliation(s)
- Eric J. Alexy
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Carl W. Hintz
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Hubert M. Hughes
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
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