Works matching AU Seoud, Omar A. El

Results: 54

Cellulose acetylation in ionic liquid-molecular solvent mixtures: influence of the biopolymer-induced preferential solvation on its dissolution and reactivity.

Published in:

Cellulose, 2024, v. 31, n. 15, p. 9043, doi. 10.1007/s10570-024-06014-4

By:

Keppeler, Nicolas;
Pires, Paulo A. R.;
de Freitas, José L. S.;
Malek, Naved I.;
Frollini, Elisabete;
El Seoud, Omar A.

Publication type:

Article

Dependence of cellulose dissolution in quaternary ammonium acetates/DMSO on the molecular structure of the electrolyte: use of solvatochromism, micro-calorimetry, and molecular dynamics simulations.

Published in:

Cellulose, 2020, v. 27, n. 7, p. 3565, doi. 10.1007/s10570-020-03050-8

By:

Kostag, Marc;
Pires, Paulo A. R.;
El Seoud, Omar A.

Publication type:

Article

Twenty-five years of cellulose chemistry: innovations in the dissolution of the biopolymer and its transformation into esters and ethers.

Published in:

Cellulose, 2019, v. 26, n. 1, p. 139, doi. 10.1007/s10570-018-2198-0

By:

Kostag, Marc;
El Seoud, Omar A.;
Gericke, Martin;
Heinze, Thomas

Publication type:

Article

Assessing cellulose dissolution efficiency in solvent systems based on a robust experimental quantification protocol and enthalpy data.

Published in:

Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood, 2019, v. 73, n. 12, p. 1103, doi. 10.1515/hf-2019-0086

By:

Kostag, Marc;
Dignani, Marcella Teixeira;
Lourenço, Matheus Costa;
Bioni, Thaís de Almeida;
El Seoud, Omar A.

Publication type:

Article

Dissolution Capacity of Novel Cellulose Solvents Based on Triethyloctylammonium Chloride.

Published in:

Macromolecular Chemistry & Physics, 2017, v. 218, n. 21, p. n/a, doi. 10.1002/macp.201700208

By:

Achtel, Christian;
Jedvert, Kerstin;
Kosan, Birgit;
Seoud, Omar A. El;
Heinze, Thomas

Publication type:

Article

Probing Cellulose Acetylation in Binary Mixtures of an Ionic Liquid with Dimethylsulfoxide and Sulfolane by Chemical Kinetics, Viscometry, Spectroscopy, and Molecular Dynamics Simulations.

Published in:

Macromolecular Chemistry & Physics, 2015, v. 216, n. 24, p. 2368, doi. 10.1002/macp.201500315

By:

Nawaz, Haq;
Pires, Paulo A. R.;
Arêas, Elizabeth P. G.;
Malek, Naved I.;
El Seoud, Omar A.

Publication type:

Article

Microwave-Assisted Derivatization of Cellulose, 2 - The Surprising Effect of the Structure of Ionic Liquids on the Dissolution and Acylation of the Biopolymer.

Published in:

Macromolecular Chemistry & Physics, 2011, v. 212, n. 23, p. 2541, doi. 10.1002/macp.201100348

By:

El Seoud, Omar A.;
da Silva, Valdinéia C.;
Possidonio, Shirley;
Casarano, Romeu;
Arêas, Elizabeth P. G.;
Gimenes, Paula

Publication type:

Article

Cellulose Swelling by Aprotic and Protic Solvents: What are the Similarities and Differences?

Published in:

Macromolecular Chemistry & Physics, 2008, v. 209, n. 12, p. 1240, doi. 10.1002/macp.200800021

By:

Fidale, Ludmila C.;
Ruiz, Naiara;
Heinze, Thomas;
Seoud, Omar A. El

Publication type:

Article

Solvatochromism in Solvent Mixtures: A Practical Solution for a Complex Problem.

Published in:

Liquids (2673-8015), 2024, v. 4, n. 1, p. 73, doi. 10.3390/liquids4010003

By:

El Seoud, Omar A.;
Possidonio, Shirley;
Malek, Naved I.

Publication type:

Article

Titanium Dioxide/Graphene and Titanium Dioxide/Graphene Oxide Nanocomposites: Synthesis, Characterization and Photocatalytic Applications for Water Decontamination.

Published in:

Catalysts (2073-4344), 2018, v. 8, n. 11, p. 491, doi. 10.3390/catal8110491

By:

Tayel, Amr;
Ramadan, Adham R.;
El Seoud, Omar A.

Publication type:

Article

Successful Application of an Ionic Liquid Carrying the Fluoride Counter-ion in Biomacromolecular Chemistry: Microwave-Assisted Acylation of Cellulose in the Presence of 1-Allyl-3-methylimidazolium Fluoride/DMSO Mixtures.

Published in:

Macromolecular Bioscience, 2013, v. 13, n. 2, p. 191, doi. 10.1002/mabi.201200296

By:

Casarano, Romeu;
El Seoud, Omar A.

Publication type:

Article

Application of 1-Allyl-3-(1-butyl)imidazolium Chloride in the Synthesis of Cellulose Esters: Properties of the Ionic Liquid, and Comparison with Other Solvents.

Published in:

Macromolecular Bioscience, 2009, v. 9, n. 8, p. 813, doi. 10.1002/mabi.200900034

By:

Fidale, Ludmila C.;
Possidonio, Shirley;
El Seoud, Omar A.

Publication type:

Article

Deep Eutectic Solvent and Poly (Vinyl Alcohol) Based Self‐healable, Injectable and Adhesive „Eutectogel": An Emerging Drug Delivery Vehicle.

Published in:

ChemistrySelect, 2024, v. 9, n. 1, p. 1, doi. 10.1002/slct.202304157

By:

Parsana, Nildhara;
Seoud, Omar El;
Al‐Ghamdi, Azza;
Kasoju, Naresh;
Malek, Naved

Publication type:

Article

Tailored Media for Homogeneous Cellulose Chemistry: Ionic Liquid/Co-Solvent Mixtures.

Published in:

Macromolecular Materials & Engineering, 2011, v. 296, n. 6, p. 483, doi. 10.1002/mame.201000330

By:

Gericke, Martin;
Liebert, Tim;
Seoud, Omar A. El;
Heinze, Thomas

Publication type:

Article

Mixed solvents for cellulose derivatization under homogeneous conditions: kinetic, spectroscopic, and theoretical studies on the acetylation of the biopolymer in binary mixtures of an ionic liquid and molecular solvents.

Published in:

Cellulose, 2014, v. 21, n. 3, p. 1193, doi. 10.1007/s10570-014-0184-8

By:

Nawaz, Haq;
Pires, Paulo;
Bioni, Thaís;
Arêas, Elizabeth;
El Seoud, Omar

Publication type:

Article

Cellulose loading and water sorption value as important parameters for the enzymatic hydrolysis of cellulose.

Published in:

Cellulose, 2013, v. 20, n. 3, p. 1109, doi. 10.1007/s10570-013-9904-8

By:

Stauner, Thomas;
Silva, Igor;
El Seoud, Omar;
Frollini, Elisabete;
Petri, Denise

Publication type:

Article

First report on the kinetics of the uncatalyzed esterification of cellulose under homogeneous reaction conditions: a rationale for the effect of carboxylic acid anhydride chain-length on the degree of biopolymer substitution.

Published in:

Cellulose, 2012, v. 19, n. 1, p. 199, doi. 10.1007/s10570-011-9622-z

By:

Nawaz, Haq;
Casarano, Romeu;
El Seoud, Omar

Publication type:

Article

Employing perichromism for probing the properties of carboxymethyl cellulose films: an expedient, accurate method for the determination of the degree of substitution of the biopolymer derivative.

Published in:

Cellulose, 2012, v. 19, n. 1, p. 151, doi. 10.1007/s10570-011-9618-8

By:

Fidale, Ludmila;
Lima, Paulo;
Hortêncio, Lucas;
Pires, Paulo;
Heinze, Thomas;
El Seoud, Omar

Publication type:

Article

Acetylation of cellulose in LiCl- N,N-dimethylacetamide: first report on the correlation between the reaction efficiency and the aggregation number of dissolved cellulose.

Published in:

Cellulose, 2011, v. 18, n. 2, p. 385, doi. 10.1007/s10570-011-9496-0

By:

Ramos, Ludmila A.;
Morgado, Daniella L.;
El Seoud, Omar A.;
da Silva, Valdinéia C.;
Frollini, Elisabete

Publication type:

Article

Probing the dependence of the properties of cellulose acetates and their films on the degree of biopolymer substitution: use of solvatochromic indicators and thermal analysis.

Published in:

Cellulose, 2010, v. 17, n. 5, p. 937, doi. 10.1007/s10570-010-9438-2

By:

Fidale, Ludmila;
Iβbrücker, Constance;
Silva, Priscilla;
Lucheti, Camila;
Heinze, Thomas;
El Seoud, Omar

Publication type:

Article

Cellulose swelling by protic solvents: which properties of the biopolymer and the solvent matter?

Published in:

Cellulose, 2008, v. 15, n. 3, p. 371, doi. 10.1007/s10570-007-9189-x

By:

Omar El Seoud;
Ludmila Fidale;
Naiara Ruiz;
Maria D’Almeida;
Elisabete Frollini

Publication type:

Article

Drug‐Induced Micelle‐to‐Vesicle Transition of a Cationic Gemini Surfactant: Potential Applications in Drug Delivery.

Published in:

ChemPhysChem, 2018, v. 19, n. 7, p. 865, doi. 10.1002/cphc.201701134

By:

Rajput, Sargam M.;
Kumar, Sugam;
Aswal, Vinod K.;
El Seoud, Omar A.;
Malek, Naved I.;
Kailasa, Suresh Kumar

Publication type:

Article

A physical organic chemistry approach to dissolution of cellulose: effects of cellulose mercerization on its properties and on the kinetics of its decrystallization.

Published in:

ARKIVOC: Online Journal of Organic Chemistry, 2011, p. 416

By:

Ramos, Ludmila A.;
Morgado, Daniella L.;
Gessner, Fergus;
Frollini, Elisabete;
El Seoud, Omar A.

Publication type:

Article

Efficient Cellulose Solvent: Quaternary Ammonium Chlorides.

Published in:

Macromolecular Rapid Communications, 2013, v. 34, n. 19, p. 1580, doi. 10.1002/marc.201300497

By:

Kostag, Marc;
Liebert, Tim;
El Seoud, Omar A.;
Heinze, Thomas

Publication type:

Article

Understanding solvation.

Published in:

Pure & Applied Chemistry, 2009, v. 81, n. 4, p. 697, doi. 10.1351/PAC-CON-08-09-27

By:

El Seoud, Omar A.

Publication type:

Article

Chemistry and Applications of Polysaccharide Solutions in Strong Electrolytes/Dipolar Aprotic Solvents: An Overview.

Published in:

Molecules, 2013, v. 18, n. 1, p. 1270, doi. 10.3390/molecules18011270

By:

El Seoud, Omar A.;
Nawaz, Haq;
Arêas, Elizabeth P. G.

Publication type:

Article

Dissolution of Silk Fibroin in Mixtures of Ionic Liquids and Dimethyl Sulfoxide: On the Relative Importance of Temperature and Binary Solvent Composition.

Published in:

Polymers (20734360), 2022, v. 14, n. 1, p. 13, doi. 10.3390/polym14010013

By:

El Seoud, Omar A.;
Kostag, Marc;
Possidonio, Shirley;
Dignani, Marcella T.;
Pires, Paulo A. R.;
Lourenço, Matheus C.

Publication type:

Article

Ionic Liquid-Based Surfactants: Recent Advances in Their Syntheses, Solution Properties, and Applications.

Published in:

Polymers (20734360), 2021, v. 13, n. 7, p. 1100, doi. 10.3390/polym13071100

By:

El Seoud, Omar A.;
Keppeler, Nicolas;
Malek, Naved I.;
Galgano, Paula D.

Publication type:

Article

Cellulose in Ionic Liquids and Alkaline Solutions: Advances in the Mechanisms of Biopolymer Dissolution and Regeneration.

Published in:

Polymers (20734360), 2019, v. 11, n. 12, p. 1917, doi. 10.3390/polym11121917

By:

El Seoud, Omar A.;
Kostag, Marc;
Jedvert, Kerstin;
Malek, Naved I.

Publication type:

Article

Cellulose Regeneration and Chemical Recycling: Closing the "Cellulose Gap" Using Environmentally Benign Solvents.

Published in:

Macromolecular Materials & Engineering, 2020, v. 305, n. 4, p. 1, doi. 10.1002/mame.201900832

By:

El Seoud, Omar A.;
Kostag, Marc;
Jedvert, Kerstin;
Malek, Naved I.

Publication type:

Article

Macromol. Mater. Eng. 5/2018.

Published in:

2018

By:

Achtel, Christian;
Jedvert, Kerstin;
Kostag, Marc;
El Seoud, Omar A.;
Heinze, Thomas

Publication type:

Cover Art

Surprising Insensitivity of Homogeneous Acetylation of Cellulose Dissolved in Triethyl(<italic>n</italic>‐octyl)ammonium Chloride/Molecular Solvent on the Solvent Polarity.

Published in:

Macromolecular Materials & Engineering, 2018, v. 303, n. 5, p. 1, doi. 10.1002/mame.201800032

By:

Achtel, Christian;
Jedvert, Kerstin;
Kostag, Marc;
El Seoud, Omar A.;
Heinze, Thomas

Publication type:

Article

Unveiling the Potential of Surface Active Ionic Liquids Based Catanionic Vesicles for Tailored Delivery of Curcumin and its Enhanced Therapeutic Efficacy.

Published in:

ChemistrySelect, 2024, v. 9, n. 22, p. 1, doi. 10.1002/slct.202401144

By:

Jain, Monika;
Ukani, Hiral;
Kumar, Sugam;
Aswal, Vinod K.;
Kailasa, Suresh Kumar;
El Seoud, Omar A.;
Malek, Naved I.

Publication type:

Article

A novel, efficient procedure for acylation of cellulose under homogeneous solution conditions.

Published in:

Journal of Applied Polymer Science, 1999, v. 74, n. 6, p. 1355, doi. 10.1002/(SICI)1097-4628(19991107)74:6<1355::AID-APP5>3.0.CO;2-M

By:

Marson, Guilherme A.;
El Seoud, Omar A.

Publication type:

Article

An efficient, one-pot acylation of cellulose under homogeneous reaction conditions.

Published in:

Macromolecular Chemistry & Physics, 2000, v. 201, n. 8, p. 882, doi. 10.1002/(SICI)1521-3935(20000501)201:8<882::AID-MACP882>3.0.CO;2-I

By:

El Seoud, Omar A.;
Marson, Guilherme A.;
Ciacco, Gabriela T.;
Frollini, Elisabete

Publication type:

Article

Potential Tuberculostatic Agent: Micelle-forming Pyrazinamide Prodrug.

Published in:

Archiv der Pharmazie, 2006, v. 339, n. 6, p. 283

By:

Nara L. Ricelli;
Omar El Seoud;
Celso S. Valentim;
Antônio G. Ferreira;
Daisy N. Sato;
Clarice Q. F. Leite;
Elizabeth I. Ferreira

Publication type:

Article

Self-Thickening Materials Derived from Phenylpropanoid Ene Reactions.

Published in:

Molecules, 2025, v. 30, n. 5, p. 977, doi. 10.3390/molecules30050977

By:

Biswas, Atanu;
Cheng, Huai N.;
Chisholm, Bret;
Beni, Ryan;
Liu, Zengshe;
Vermillion, Karl;
Appell, Michael;
Forson, Kelton;
El Seoud, Omar;
Alves, Carlucio R.;
Furtado, Roselayne F.

Publication type:

Article

Cellulose Dissolution in Mixtures of Ionic Liquids and Dimethyl Sulfoxide: A Quantitative Assessment of the Relative Importance of Temperature and Composition of the Binary Solvent.

Published in:

Molecules, 2020, v. 25, n. 24, p. 5975, doi. 10.3390/molecules25245975

By:

Dignani, Marcella T.;
Bioni, Thaís A.;
Paixão, Thiago R. L. C.;
El Seoud, Omar A.;
Fardim, Pedro

Publication type:

Article

Recent Advances in Solvents for the Dissolution, Shaping and Derivatization of Cellulose: Quaternary Ammonium Electrolytes and their Solutions in Water and Molecular Solvents.

Published in:

Molecules, 2018, v. 23, n. 3, p. 511, doi. 10.3390/molecules23030511

By:

Kostag, Marc;
Jedvert, Kerstin;
Achtel, Christian;
Heinze, Thomas;
El Seoud, Omar A.

Publication type:

Article

Temperature‐Responsive Low Molecular Weight Ionic Liquid Based Gelator: An Approach to Fabricate an Anti‐Cancer Drug‐Loaded Hybrid Ionogel.

Published in:

ChemSystemsChem, 2020, v. 2, n. 5, p. 1, doi. 10.1002/syst.201900053

By:

Kuddushi, Muzammil;
Patel, Nehal K.;
Rajput, Sargam;
El Seoud, Omar A.;
Mata, Jitendra P.;
Malek, Naved I.

Publication type:

Article

Solvatochromism of 2-( N,N-dimethylamino)-7-nitrofluorene and the natural dye.

Published in:

Journal of Physical Organic Chemistry, 2013, v. 26, n. 3, p. 280, doi. 10.1002/poc.3083

By:

Pires, Paulo A. R.;
Imran, Muhammad;
Loffredo, Carina;
Donate, Paulo M.;
Previdi, Daniel;
El Seoud, Omar A.

Publication type:

Article

Kinetics of the pH-independent hydrolyses of 4-nitrophenyl chloroformate and 4-nitrophenyl heptafluorobutyrate in water-acetonitrile mixtures: consequences of solvent composition and ester hydrophobicity.

Published in:

Journal of Physical Organic Chemistry, 2006, v. 19, n. 11, p. 793, doi. 10.1002/poc.1081

By:

El Seoud, Omar A.;
Siviero, Fábio

Publication type:

Article

A novel, convenient, quinoline-based merocyanine dye: probing solvation in pure and mixed solvents and in the interfacial region of an anionic micelle.

Published in:

Journal of Physical Organic Chemistry, 2005, v. 18, n. 11, p. 1072, doi. 10.1002/poc.975

By:

Martins, Clarissa T.;
Lima, Michelle S.;
El Seoud, Omar A.

Publication type:

Article

Interfacial ion exchange between monovalent and divalent anions in cationic micelles, revised in the light of correlation analysis.

Published in:

Journal of Physical Organic Chemistry, 2005, v. 18, n. 8, p. 850, doi. 10.1002/poc.953

By:

Blagoeva, Iva B.;
Ouarti, Nadia;
El Seoud, Omar A.;
Ruasse, Marie-Françoise

Publication type:

Article

Thermo-solvatochromism of zwitterionic probes in aqueous aliphatic alcohols and in aqueous 2-alkoxyethanols: relevance to the enthalpies of activation of chemical reactions.

Published in:

Journal of Physical Organic Chemistry, 2005, v. 18, n. 5, p. 398, doi. 10.1002/poc.887

By:

Tada, Erika B.;
Silva, Priscilla L.;
Tavares, Clarissa;
El Seoud, Omar A.

Publication type:

Article

Kinetics and mechanisms of the reactions of benzoyl derivatives of nucleophiles: dependence of the solvation requirement of the reaction on the structures of the nucleophile and the acyl group.

Published in:

Journal of Physical Organic Chemistry, 2005, v. 18, n. 2, p. 173, doi. 10.1002/poc.864

By:

Seoud, Omar A. El;
Ferreira, Monica;
Rodrigues, Wagner A.;
Ruasse, Marie-Françoise

Publication type:

Article

Thermo-solvatochromism of betaine dyes in aqueous alcohols: explicit consideration of the water-alcohol complex.

Published in:

Journal of Physical Organic Chemistry, 2003, v. 16, n. 10, p. 691, doi. 10.1002/poc.632

By:

Tada, Erika B.;
Silva, Priscilla L.;
El Seoud, Omar A.

Publication type:

Article

Thermo-solvatochromism in aqueous alcohols: effects of the molecular structures of the alcohol and thesolvatochromic probe.

Published in:

Journal of Physical Organic Chemistry, 2002, v. 15, n. 7, p. 403, doi. 10.1002/poc.510

By:

Antonious, Maged S.;
Tada, Erika B.;
Seoud, Omar A. El

Publication type:

Article

Optimization of micellar catalysis of nucleophilic substitution reactions in buffered solutions of cetyltrimethylammonium halide surfactants, part 2: buffers in the pH range 7-8.

Published in:

Journal of Physical Organic Chemistry, 2001, v. 14, n. 11, p. 823, doi. 10.1002/poc.441

By:

Ouarti, Nadia;
Blagoeva, Iva B.;
Seoud, Omar A. El;
Ruasse, Marie-Françoise

Publication type:

Article

Solvatochromism in pure and binary solvent mixtures: effects of the molecular structure of the zwitterionic probe.

Published in:

Journal of Physical Organic Chemistry, 2000, v. 13, n. 11, p. 679, doi. 10.1002/1099-1395(200011)13:11<679::AID-POC299>3.0.CO;2-R

By:

Tada, Erika B.;
Novaki, Luzia P.;
El Seoud, Omar A.

Publication type:

Article