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Omar El Seoud

Omar Abdel Monein Abou El Seoud, Egyptian-born Brazilian chemist (Cairo 21 May 1945 -

Coined the term surface active ionic liquids or SAILs

With P.A. Pires, T. Abdel Moghny & E.L. Bastos. Synthesis and micellar properties of surface-active ionic liquids: 1-alkyl-3-methylimidazolium chlorides. J. Colloid Interface Sci. 313(1):296-304, 2007

His work was cover of a review

With P.D. Galgano. Micellar properties of surface active ionic liquids: A comparison of 1-hexadecyl-3-methyl-imidizolium chloride with structurally related cationic surfactants. J. Col. Interf. Science (2010)

With L.A. Ramos, D.L. Morgado, V.C. da Silva & E. Frollini. Acetylation of cellulose in LiCl-N,N-dimethylacetamide: first report on the correlation between the reaction efficiency and the aggregation number of dissolved cellulose. Cellulose (London) 18:385-92, 2011.

With H. Nawaz & R. Casarano. 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. Cellulose (London) 19:199-207, 2012.

With C.T. Martins & B.M. Sato. First study on the thermo-solvatochromism in aqueous 1-(1-butyl)-3-methylimidazolium tetraflouroborate: A comparison between the solvation by an ionic liquid and by aqueous alcohols. Journal of Physical Chemistry 112: 8330-9, 2008.

With P.L. Silva, M.A.S. Trassi & C.T. Martins. Solvatochromism in Binary Mixtures: First Report on a Solvation Free Energy Relationship between Solvent Exchange Equilibrium Constants and the Properties of the Medium. Journal of Physical Chemistry. B 113:9512-9, 2009.


With P.A.R. Pires, N.I. Malek, T.C. Teixeira, T.A. Bioni & H. Nawaz. Imidazole-catalyzed esterification of cellulose in ionic liquid/molecular solvents: a multi-technique approach to probe effects of the medium. Indust. Crops Products 77:180-9, 2015

With M.I. El Seoud & J.A. Mickiewicz. A proton and carbon 13NMR study on the state of water solubilized by detergent aggregates in organic solvents

With R. Casarano & P.A.R. Pires. Acylation of cellulose in a novel solvent system: Solution of dibenzyldimethylammonium fluoride in DMSO. Carbohydrate Polymers 101:444-50, 2014.

With R. Casarano, P.A.R. Pires & A.C. Borin. Novel solvents for cellulose: Use of dibenzyldimethylammonium fluoride/dimethyl sulfoxide (DMSO) as solvent for the etherification of the biopolymer and comparison with tetra(1-butyl)ammonium fluoride/DMSO. Industrial Crops and Products 54:185-91, 2014

With D.P. Valencia, P.D. Galgano & M. Bertotti.A simple Approach to Calculate the Micelle Aggregation Numbers of Ionic Liquid-Based Surfactants: Electrochemical Behavior of Aggregate-Solubilized Ferrocene Studied by Microelectrode Voltammetry. Journal of the Electrochemical Society 161:660-2, 2014.

With L.C. Fidale & T. Heinze. Perichromism: A powerful tool for probing the properties of cellulose and its derivatives. Carbohydrate Polymers 93:129-34, 2013

With R. Casarano. A Novel Route to Obtaining Stable Quaternary Ammonium Fluoride Solutions in DMSO: Application in Microwave-Assisted Acylation of Cellulose. Lenzinger Berichte, 91:112, 2013

With C. Loffredo, P.A.R. Pires & M. Imran.β-Carotene: A green, inexpensive, and convenient solvatochromic probe for the determination of solvent polarizability. Dyes and Pigments 96:16-24, 2013.

With L.C. Fidale, L.M.A. Hortencio, T. Heinze, P.A.R. Pires & P.M. Lima. 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. Cellulose (London) 19:151-9, 2012.

With R. Casarano, L.C. Fidale, C.M. Luchetti & T. Heinze. Expedient, accurate methods for the determination of the degree of substitution of cellulose carboxylic esters: Application of UVa "vis spectroscopy (dye solvatochromism) and FTIR. Carbohydrate Polymers 83:1285-92, 2011.

With R. Casarano, H. Nawaz, S. Possidonio & V. C. da Silva. A convenient solvent system for cellulose dissolution and derivatization: Mechanistic aspects of the acylation of the biopolymer in tetraallylammonium fluoride/dimethyl sulfoxide. Carbohydrate Polymers 86:1395-1402, 2011.

With S. Possidonio & L.C. Fidale. Microwave-assisted derivatization of cellulose in an ionic liquid: An efficient, expedient synthesis of simple and mixed carboxylic esters. Journal of Polymer Science. Part A, Polymer Chemistry 48:134-143, 2010. 

With L.C. Fidale, S. Kohler, M.H.G. Prchtl & T. Heinze. Simple, Expedient Methods for the Determination of Water and Electrolyte Contents of Cellulose Solvent Systems. Cellulose 13: 581-92, 2006

With C.T. Martins & M.S. Lima. A Novel, Convenient, Quinoline-Based Merocyanine Dye: Probing Solvation in Pure and Mixed Solvents and in the Interfacial Region of an Anionic Micelle. Journal of Physical Organic Chemistry 18: 1072-85, 2005.

With G.A. Marson. A novel efficient procedure for acylation of cellulose under homogeneous solution conditions. Journal of Applied Polymer Science 74:1355, 1999.

With G.J. Vidotti. An Accurate Method for Determining the Residual Base Catalyst in Commercial Non-ionic Detergents. Colloid and Polymer Science 258:1200, 1980.

With V. Aldrigue. Simple, Efficient Methods for Preparing N-Alkylimidazoles. Anais da Academia Brasileira de Ciências 50:87, 1978.


With R. Casarano. Sistema de solventes, processo de produção de um sistema de solventes e seu uso. BR10 2013 0010979A2 (2013)