1
|
Chibac-Scutaru AL, Coseri S. Advances in the use of cellulose-based proton exchange membranes in fuel cell technology: A review. Int J Biol Macromol 2023; 247:125810. [PMID: 37453630 DOI: 10.1016/j.ijbiomac.2023.125810] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/11/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Fuel cells are electrochemical, ecologically friendly appliances that transform chemical energy into electricity in a clean, simple, and effective manner. With the advancement of technology in the field of computer science, electronic downsizing, and the ongoing need for mobility, the demand for portable energy sources such as fuel cells has considerably increased. The proton exchange membrane, which is designed to be a good conductor for protons while isolating electrons to move from the anode to the cathode, imprinting them an external circuit, and thus creating electricity, is at the heart of such an energy source. Perfluorosulfonic acid-based (NAFION) membranes, first introduced over 50 years ago, are still the state of the art in the field of fuel cell proton exchange membranes today. However, because of the numerous drawbacks connected with the usage of NAFION membranes, the scientific community has shifted its focus to producing new generation membranes based on natural materials, such as cellulose. Therefore, we believe that a review of the most recent studies on the use of cellulose as a material for proton exchange membranes in fuel cells may be very much appreciated by the scientific community.
Collapse
Affiliation(s)
- Andreea Laura Chibac-Scutaru
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, 700487, Iasi, Romania.
| | - Sergiu Coseri
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, 700487, Iasi, Romania.
| |
Collapse
|
2
|
Abstract
Nitroxides, also known as nitroxyl radicals, are long-lived or stable radicals with the general structure R1R2N-O•. The spin distribution over the nitroxide N and O atoms contributes to the thermodynamic stability of these radicals. The presence of bulky N-substituents R1 and R2 prevents nitroxide radical dimerization, ensuring their kinetic stability. Despite their reactivity toward various transient C radicals, some nitroxides can be easily stored under air at room temperature. Furthermore, nitroxides can be oxidized to oxoammonium salts (R1R2N═O+) or reduced to anions (R1R2N-O-), enabling them to act as valuable oxidants or reductants depending on their oxidation state. Therefore, they exhibit interesting reactivity across all three oxidation states. Due to these fascinating properties, nitroxides find extensive applications in diverse fields such as biochemistry, medicinal chemistry, materials science, and organic synthesis. This review focuses on the versatile applications of nitroxides in organic synthesis. For their use in other important fields, we will refer to several review articles. The introductory part provides a brief overview of the history of nitroxide chemistry. Subsequently, the key methods for preparing nitroxides are discussed, followed by an examination of their structural diversity and physical properties. The main portion of this review is dedicated to oxidation reactions, wherein parent nitroxides or their corresponding oxoammonium salts serve as active species. It will be demonstrated that various functional groups (such as alcohols, amines, enolates, and alkanes among others) can be efficiently oxidized. These oxidations can be carried out using nitroxides as catalysts in combination with various stoichiometric terminal oxidants. By reducing nitroxides to their corresponding anions, they become effective reducing reagents with intriguing applications in organic synthesis. Nitroxides possess the ability to selectively react with transient radicals, making them useful for terminating radical cascade reactions by forming alkoxyamines. Depending on their structure, alkoxyamines exhibit weak C-O bonds, allowing for the thermal generation of C radicals through reversible C-O bond cleavage. Such thermally generated C radicals can participate in various radical transformations, as discussed toward the end of this review. Furthermore, the application of this strategy in natural product synthesis will be presented.
Collapse
Affiliation(s)
- Dirk Leifert
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
| |
Collapse
|
3
|
Duceac IA, Tanasa F, Coseri S. Selective Oxidation of Cellulose-A Multitask Platform with Significant Environmental Impact. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5076. [PMID: 35888547 PMCID: PMC9324530 DOI: 10.3390/ma15145076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 02/07/2023]
Abstract
Raw cellulose, or even agro-industrial waste, have been extensively used for environmental applications, namely industrial water decontamination, due to their effectiveness, availability, and low production cost. This was a response to the increasing societal demand for fresh water, which made the purification of wastewater one of the major research issue for both academic and industrial R&D communities. Cellulose has undergone various derivatization reactions in order to change the cellulose surface charge density, a prerequisite condition to delaminate fibers down to nanometric fibrils through a low-energy process, and to obtain products with various structures and properties able to undergo further processing. Selective oxidation of cellulose, one of the most important methods of chemical modification, turned out to be a multitask platform to obtain new high-performance, versatile, cellulose-based materials, with many other applications aside from the environmental ones: in biomedical engineering and healthcare, energy storage, barrier and sensing applications, food packaging, etc. Various methods of selective oxidation have been studied, but among these, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl) (TEMPO)-mediated and periodate oxidation reactions have attracted more interest due to their enhanced regioselectivity, high yield and degree of substitution, mild conditions, and the possibility to further process the selectively oxidized cellulose into new materials with more complex formulations. This study systematically presents the main methods commonly used for the selective oxidation of cellulose and provides a survey of the most recent reports on the environmental applications of oxidized cellulose, such as the removal of heavy metals, dyes, and other organic pollutants from the wastewater.
Collapse
Affiliation(s)
| | - Fulga Tanasa
- Department of Polyaddition and Photochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, Romania; (I.A.D.); (S.C.)
| | | |
Collapse
|
4
|
Culica ME, Chibac-Scutaru AL, Mohan T, Coseri S. Cellulose-based biogenic supports, remarkably friendly biomaterials for proteins and biomolecules. Biosens Bioelectron 2021; 182:113170. [DOI: 10.1016/j.bios.2021.113170] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/02/2021] [Accepted: 03/12/2021] [Indexed: 01/18/2023]
|
5
|
Anderson TE, Andia AA, Woerpel KA. Chemiluminescence-promoted oxidation of alkyl enol ethers by NHPI under mild conditions and in the dark. Tetrahedron 2021; 82:131874. [PMID: 33994596 PMCID: PMC8117068 DOI: 10.1016/j.tet.2020.131874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The hydroperoxidation of alkyl enol ethers using N-hydroxyphthalimide and molecular oxygen occurred in the absence of catalyst, initiator, or light. The reaction proceeds through a radical mechanism that is initiated by N-hydroxyphthalimide-promoted autoxidation of the enol ether substrate. The resulting dioxetane products decompose in a chemiluminescent reaction that allows for photochemical activation of N-hydroxyphthalimide in the absence of other light sources.
Collapse
Affiliation(s)
- T. E. Anderson
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, United States
| | - Alexander A. Andia
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, United States
| | - K. A. Woerpel
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, United States
| |
Collapse
|
6
|
Preparation of water-soluble cellulose derivatives using TEMPO radical-mediated oxidation at extended reaction time. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104768] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
7
|
Anderson TE, Woerpel KA. Strain-Promoted Oxidation of Methylenecyclopropane Derivatives using N-Hydroxyphthalimide and Molecular Oxygen in the Dark. Org Lett 2020; 22:5690-5694. [PMID: 32643945 PMCID: PMC7368818 DOI: 10.1021/acs.orglett.0c02075] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The hydroperoxidation of alkylidenecyclopropanes and other strained alkenes using an N-hydroxylamine and molecular oxygen occurred in the absence of catalyst, initiator, or light. The oxidation reaction proceeds through a radical pathway that is initiated by autoxidation of the alkene substrate. The hydroperoxides were converted to their corresponding alcohols and ketones under mild conditions.
Collapse
Affiliation(s)
- T. E. Anderson
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - K. A. Woerpel
- Department of Chemistry, New York University, New York, New York 10003, United States
| |
Collapse
|
8
|
Culica ME, Kasperczyk K, Baron RI, Biliuta G, Macsim AM, Lazea-Stoyanova A, Orlinska B, Coseri S. Recyclable Polymer-Supported N-Hydroxyphthalimide Catalysts for Selective Oxidation of Pullulan. MATERIALS 2019; 12:ma12213585. [PMID: 31683622 PMCID: PMC6862700 DOI: 10.3390/ma12213585] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/21/2019] [Accepted: 10/30/2019] [Indexed: 01/02/2023]
Abstract
This paper proposes a convenient route to oxidize the –CH2–OH groups in the water-soluble pullulan, using a new catalytic polymer-supported N-hydroxyphthalimide (NHPI) immobilized on polystyrene. The protocol involves the presence of sodium hypochlorite and sodium bromide. The conversion is possible at room temperature, atmospheric pressure, and pH = 10. The characterization of both the catalysts and oxidized pullulan was done using NMR and FTIR methods. Using polyelectrolyte titration with end-point indication by means of a particle-charge detector (PCD), we were able to assess the degree of electrokinetic charge in all oxidized samples as a consequence of the conversion of the –CH2–OH group into –COOH moieties. The possibility of recovery and recycling of the polymer-supported NHPI catalyst was tested for up to four cycles, since the morphological analyses performed on the catalysts using SEM revealed no significant changes.
Collapse
Affiliation(s)
- Madalina Elena Culica
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, Iasi 700487, Romania.
| | - Kornela Kasperczyk
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, Krzywoustego 4, 44 100 Gliwice, Poland.
| | - Raluca Ioana Baron
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, Iasi 700487, Romania.
| | - Gabriela Biliuta
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, Iasi 700487, Romania.
| | - Ana Maria Macsim
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, Iasi 700487, Romania.
| | - Andrada Lazea-Stoyanova
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele 77125, Romania.
| | - Beata Orlinska
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, Krzywoustego 4, 44 100 Gliwice, Poland.
| | - Sergiu Coseri
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41 A, Gr. Ghica Voda Alley, Iasi 700487, Romania.
| |
Collapse
|
9
|
Biliuta G, Coseri S. Cellulose: A ubiquitous platform for ecofriendly metal nanoparticles preparation. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
10
|
Kuznetsova N, Kuznetsova L, Yakovina O, Babushkin D, Bal'zhinimaev B. The N-Hydroxyphthalimide catalyzed oxidation of cyclohexene to cyclohexenyl hydroperoxide: Reasons for deactivation and stability of the catalyst. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
|
11
|
González Domínguez M, Urruela G. Prevalencia de depresión durante el embarazo en mujeres atendidas en Centro de Salud Rural. REVISTA DE LA FACULTAD DE MEDICINA 2018. [DOI: 10.37345/23045329.v1i24.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Introducción: La depresión prenatal es un importante problema de salud a nivel mundial y está asociada con consecuencias negativas tanto para la madre como para el bebé, a corto y largo plazo. Por ello, es muy importante realizar su diagnóstico adecuado en mujeres embarazadas. Objetivo: El objetivo de este estudio fue determinar la prevalencia de depresión durante el embarazo en mujeres atendidas en el Centro de Salud Bárbara, San Juan Sacatepéquez, Guatemala. Metodología: Se entrevistaron a 102 mujeres embarazadas entre 18 y 40 años, quienes consultaban para control pre natal, utilizando el Cuestionario de Salud (PHQ-9). Resultados: Se detectó una prevalencia de depresión del 10.8%, siendo un 5.9% casos de depresión leve y un 4.9% de casos de depresión mayor. Discusión: Se realizó un análisis de variables (edad, nivel socioeconómico, estado civil, escolaridad, cantidad de hijos, trimestre del embarazo e historia de abortos previos), por método de Chi-cuadrado de Pearson, el cual demostró que las variables analizadas y la depresión son independientes entre sí y no tienen relación significativa, en la población estudiada.
Collapse
|
12
|
Coseri S, Biliuta G, Simionescu BC. Selective oxidation of cellulose, mediated by N-hydroxyphthalimide, under a metal-free environment. Polym Chem 2018. [DOI: 10.1039/c7py01710c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The generation of the phthalimide-N-oxyl (PINO) free radical from its N-hydroxylphthalimide (NHPI) precursor under a metal free environment, to selectively oxidize the primary OH groups in cellulose is reported.
Collapse
Affiliation(s)
- Sergiu Coseri
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
| | - Gabriela Biliuta
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
| | - Bogdan C. Simionescu
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
- Department of Natural and Synthetic Polymers
- “Gh. Asachi” Technical University
| |
Collapse
|
13
|
Coseri S. Cellulose: To depolymerize… or not to? Biotechnol Adv 2017; 35:251-266. [PMID: 28095321 DOI: 10.1016/j.biotechadv.2017.01.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/30/2016] [Accepted: 01/11/2017] [Indexed: 10/20/2022]
Abstract
Oxidation of the primary OH groups in cellulose is a pivotal reaction both at lab and industrial scale, leading to the value-added products, i.e. oxidized cellulose which have tremendous applications in medicine, pharmacy and hi-tech industry. Moreover, the introduction of carboxyl moieties creates prerequisites for further cellulose functionalization through covalent attachment or electrostatic interactions, being an essential achievement designed to boost the area of cellulose-based nanomaterials fabrication. Various methods for the cellulose oxidation have been developed in the course of time, aiming the selective conversion of the OH groups. These methods use: nitrogen dioxide in chloroform, alkali metal nitrites and nitrates, strong acids alone or in combination with permanganates or sodium nitrite, ozone, and sodium periodate or lead (IV) tetraacetate. In the case of the last two reagents, cellulose dialdehydes derivatives are formed, which are further oxidized by sodium chlorite or hydrogen peroxide to form dicarboxyl groups. A major improvement in the cellulose oxidation was represented by the introduction of the stable nitroxyl radicals, such as 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO). However, a major impediment for the researchers working in this area is related with the severe depolymerisation occurred during the TEMPO-mediated conversion of CH2OH into COOH groups. On the other hand, the cellulose depolymerisation represent the key step, in the general effort of searching for alternative strategies to develop new renewable, carbon-neutral energy sources. In this connection, exploiting the biomass feed stocks to produce biofuel and other low molecular organic compounds, involves a high amount of research to improve the overall reaction conditions, limit the energy consumption, and to use benign reagents. This work is therefore focused on the parallelism between these two apparently antagonist processes involving cellulose, building a necessary bridge between them, thinking how the reported drawbacks of the TEMPO-mediated oxidation of cellulose are heading towards to the biomass valorisation, presenting why the apparently undesired side reactions could be turned into beneficial processes if they are correlated with the existing achievements of particular significance in the field of cellulose conversion into small organic compounds, aiming the general goal of pursuing for alternatives to replace the petroleum-based products in human life.
Collapse
Affiliation(s)
- Sergiu Coseri
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, Iasi 700487, Romania.
| |
Collapse
|
14
|
Krylov IB, Vil’ VA, Terent’ev AO. Cross-dehydrogenative coupling for the intermolecular C-O bond formation. Beilstein J Org Chem 2015; 11:92-146. [PMID: 25670997 PMCID: PMC4311763 DOI: 10.3762/bjoc.11.13] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 12/31/2014] [Indexed: 12/11/2022] Open
Abstract
The present review summarizes primary publications on the cross-dehydrogenative C-O coupling, with special emphasis on the studies published after 2000. The starting compound, which donates a carbon atom for the formation of a new C-O bond, is called the CH-reagent or the C-reagent, and the compound, an oxygen atom of which is involved in the new bond, is called the OH-reagent or the O-reagent. Alcohols and carboxylic acids are most commonly used as O-reagents; hydroxylamine derivatives, hydroperoxides, and sulfonic acids are employed less often. The cross-dehydrogenative C-O coupling reactions are carried out using different C-reagents, such as compounds containing directing functional groups (amide, heteroaromatic, oxime, and so on) and compounds with activated C-H bonds (aldehydes, alcohols, ketones, ethers, amines, amides, compounds containing the benzyl, allyl, or propargyl moiety). An analysis of the published data showed that the principles at the basis of a particular cross-dehydrogenative C-O coupling reaction are dictated mainly by the nature of the C-reagent. Hence, in the present review the data are classified according to the structures of C-reagents, and, in the second place, according to the type of oxidative systems. Besides the typical cross-dehydrogenative coupling reactions of CH- and OH-reagents, closely related C-H activation processes involving intermolecular C-O bond formation are discussed: acyloxylation reactions with ArI(O2CR)2 reagents and generation of O-reagents in situ from C-reagents (methylarenes, aldehydes, etc.).
Collapse
Affiliation(s)
- Igor B Krylov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Alexander O Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| |
Collapse
|
15
|
Coseri S, Biliuta G, Zemljič LF, Srndovic JS, Larsson PT, Strnad S, Kreže T, Naderi A, Lindström T. One-shot carboxylation of microcrystalline cellulose in the presence of nitroxyl radicals and sodium periodate. RSC Adv 2015. [DOI: 10.1039/c5ra16183e] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
2,3,6-Tricarboxy cellulose has been synthesized in a one-shot reaction, combining two of the most common selective oxidation protocols for cellulose, i.e. nitroxyl mediated reaction and periodate oxidation.
Collapse
Affiliation(s)
- Sergiu Coseri
- ”Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Members of the European Polysaccharide Network of Excellence (EPNOE)
- Iasi
- Romania
| | - Gabriela Biliuta
- ”Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Members of the European Polysaccharide Network of Excellence (EPNOE)
- Iasi
- Romania
| | - Lidija Fras Zemljič
- Laboratory for Characterization and Processing of Polymers
- Faculty of Mechanical Engineering
- University of Maribor
- Members of the European Polysaccharide Network of Excellence (EPNOE)
- SI-2000 Maribor
| | | | | | - Simona Strnad
- Laboratory for Characterization and Processing of Polymers
- Faculty of Mechanical Engineering
- University of Maribor
- Members of the European Polysaccharide Network of Excellence (EPNOE)
- SI-2000 Maribor
| | - Tatjana Kreže
- Laboratory for Characterization and Processing of Polymers
- Faculty of Mechanical Engineering
- University of Maribor
- Members of the European Polysaccharide Network of Excellence (EPNOE)
- SI-2000 Maribor
| | | | | |
Collapse
|
16
|
Spatareanu A, Bercea M, Budtova T, Harabagiu V, Sacarescu L, Coseri S. Synthesis, characterization and solution behaviour of oxidized pullulan. Carbohydr Polym 2014; 111:63-71. [DOI: 10.1016/j.carbpol.2014.04.060] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Revised: 04/16/2014] [Accepted: 04/20/2014] [Indexed: 10/25/2022]
|
17
|
Opeida IO, Litvinov YE, Kushch OV, Kompanets MO, Shendrik OM. Kinetic Studies of Acenaphthene Oxidation Catalyzed by N
-Hydroxyphthalimide. INT J CHEM KINET 2013. [DOI: 10.1002/kin.20790] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- I. O. Opeida
- L. M. Litvinenko Institute of Physico-Organic and Coal Chemistry of NASU; Donetsk 83114 Ukraine
| | - Yu. E. Litvinov
- L. M. Litvinenko Institute of Physico-Organic and Coal Chemistry of NASU; Donetsk 83114 Ukraine
| | - O. V. Kushch
- L. M. Litvinenko Institute of Physico-Organic and Coal Chemistry of NASU; Donetsk 83114 Ukraine
| | - M. O. Kompanets
- L. M. Litvinenko Institute of Physico-Organic and Coal Chemistry of NASU; Donetsk 83114 Ukraine
| | - O. M. Shendrik
- L. M. Litvinenko Institute of Physico-Organic and Coal Chemistry of NASU; Donetsk 83114 Ukraine
| |
Collapse
|
18
|
Coseri S, Doliška A, Kleinschek KS. Immobilization of Water-Soluble 6-Carboxylcellulose on Poly(ethylene terephthalate) Films Monitored by a Quartz Crystal Microbalance with Dissipation. Ind Eng Chem Res 2013. [DOI: 10.1021/ie400645j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sergiu Coseri
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Aleš Doliška
- Laboratory for Characterization
and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor,
Slovenia
| | - Karin Stana Kleinschek
- Laboratory for Characterization
and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor,
Slovenia
| |
Collapse
|
19
|
Coseri S, Biliuta G, Simionescu BC, Stana-Kleinschek K, Ribitsch V, Harabagiu V. Oxidized cellulose—Survey of the most recent achievements. Carbohydr Polym 2013; 93:207-15. [DOI: 10.1016/j.carbpol.2012.03.086] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Revised: 03/22/2012] [Accepted: 03/27/2012] [Indexed: 11/30/2022]
|
20
|
Biliuta G, Fras L, Drobota M, Persin Z, Kreze T, Stana-Kleinschek K, Ribitsch V, Harabagiu V, Coseri S. Comparison study of TEMPO and phthalimide-N-oxyl (PINO) radicals on oxidation efficiency toward cellulose. Carbohydr Polym 2013; 91:502-7. [DOI: 10.1016/j.carbpol.2012.08.047] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 08/10/2012] [Accepted: 08/14/2012] [Indexed: 11/16/2022]
|
21
|
Terent'ev AO, Krylov IB, Sharipov MY, Kazanskaya ZM, Nikishin GI. Generation and cross-coupling of benzyl and phthalimide-N-oxyl radicals in a cerium(IV) ammonium nitrate/N-hydroxyphthalimide/ArCH2R system. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.10.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
22
|
Coseri S, Biliuta G. Bromide-free oxidizing system for carboxylic moiety formation in cellulose chain. Carbohydr Polym 2012; 90:1415-9. [DOI: 10.1016/j.carbpol.2012.07.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 06/25/2012] [Accepted: 07/02/2012] [Indexed: 11/15/2022]
|
23
|
Baciocchi E, Bietti M, D'Alfonso C, Lanzalunga O, Lapi A, Salamone M. One-electron oxidation of ferrocenes by short-lived N-oxyl radicals. The role of structural effects on the intrinsic electron transfer reactivities. Org Biomol Chem 2011; 9:4085-90. [PMID: 21541382 DOI: 10.1039/c0ob01257b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A kinetic study of the one electron oxidation of substituted ferrocenes (FcX: X = H, COPh, COMe, CO(2)Et, CONH(2), CH(2)OH, Et, and Me(2)) by a series of N-oxyl radicals (succinimide-N-oxyl radical (SINO), maleimide-N-oxyl radical (MINO), 3-quinazolin-4-one-N-oxyl radical (QONO) and 3-benzotriazin-4-one-N-oxyl radical (BONO)), has been carried out in CH(3)CN. N-oxyl radicals were produced by hydrogen abstraction from the corresponding N-hydroxy derivatives by the cumyloxyl radical. With all systems, the rate constants exhibited a satisfactory fit to the Marcus equation allowing us to determine self-exchange reorganization energy values (λ(NO˙/NO(-))) which have been compared with those previously determined for the PINO/PINO(-) and BTNO/BTNO(-) couples. Even small modification of the structure of the N-oxyl radicals lead to significant variation of the λ(NO˙/NO(-)) values. The λ(NO˙/NO(-)) values increase in the order BONO < BTNO < QONO < PINO < SINO < MINO which do not parallel the order of the oxidation potentials. The higher λ(NO˙/NO(-)) values found for the MINO and SINO radicals might be in accordance with a lower degree of spin delocalization in the radicals MINO and SINO and charge delocalization in the anions MINO(-) and SINO(-) due to the absence of an aromatic ring in their structure.
Collapse
Affiliation(s)
- Enrico Baciocchi
- Dipartimento di Chimica, Sapienza Università di Roma and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, Rome, Italy
| | | | | | | | | | | |
Collapse
|
24
|
XPS study of the ion-exchange capacity of the native and surface oxidized viscose fibers. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.03.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
25
|
Zhang P, Wang C, Chen Z, Li H. Acetylacetone–metal catalyst modified by pyridinium salt group applied to the NHPI-catalyzed oxidation of cholesteryl acetate. Catal Sci Technol 2011. [DOI: 10.1039/c1cy00186h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Coseri S, Nistor G, Fras L, Strnad S, Harabagiu V, Simionescu BC. Mild and Selective Oxidation of Cellulose Fibers in the Presence of N-Hydroxyphthalimide. Biomacromolecules 2009; 10:2294-9. [DOI: 10.1021/bm9004854] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Coseri
- “Petru Poni” Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania, and Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - G. Nistor
- “Petru Poni” Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania, and Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - L. Fras
- “Petru Poni” Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania, and Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - S. Strnad
- “Petru Poni” Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania, and Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - V. Harabagiu
- “Petru Poni” Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania, and Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - B. C. Simionescu
- “Petru Poni” Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania, and Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| |
Collapse
|