Universidade de São Paulo

Omar Abdel Moneim Abou El Seoud

Professor Sênior - Departamento de Química Fundamental
Polymer and surfactant group



Nosso grupo vem desenvolvendo trabalhos abrangendo as seguintes linhas:

1-Química Verde: Síntese, propriedades de líquidos iônicos e suas misturas com solventes moleculares. Emprego como solventes para reações químicas e na derivatização de biopolímeros.

2-Polímeros Naturais Modificados: Estratégias para derivatização de celulose sob condições homogêneas de reação; propriedades e aplicações dos derivados obtidos (ésteres, ésteres mistos, e éteres) e de sues compósitos. 

3-Síntese e Aplicação de Tensoativos Verdes: Síntese de tensoativos verdes a base de açucares e líquidos iônicos; estudo das propriedades de suas soluções. Aplicações como catalisadores de reações químicas, na formação de emulsões e micro-emulsões, e na descontaminação de solo.

4- Estabilidade dos asfaltenos e uso de inibidores de precipitação.

5-Educação em Química: Educação para desenvolvimento sustentável. 


Summary Our research group is interested in the following research topics:

1-Green Chemistry: Synthesis and properties of ionic liquids and their mixtures with molecular solvents and applications as media for chemical reactions and derivatization of biopolymers. 

2-Modified biopolymers: Strategies for cellulose derivatization; properties and applications of the products obtained (esters; mixed esters, and ethers) and their composites.

3-Synthesis, properties and Applications of Green Surfactants: Synthesis of sugar-based surfactants and ionic liquid-based surfactants; properties of their solutions. Applications including as catalysts of chemical reactions, for the formation of emulsions and microemulsions, and in soil decontamination.

4- Asphaltene stability and precipitation inhibition.

5-Education in Chemistry: Education for sustainable development.


Recent Publoications 

1- Vaid, Z. S.; Kumar, A.; El Seoud, O. A.; Malek, N. I. (2017)

Drug induced micelle-to-vesicle transition in aqueous solutions of cationic surfactants

RCS Advances, 7, 3861-3869

 2-El Seoud, O. A.; Baader, W. J.; Bastos, E. L. (2017)

Practical chemical kinetics in solution.

Enycloppedia of physical Organic Chemistry, 1 ed., Wiley, N. Y., v. 1, 369-436.

 3- de Jesus, J. C.; Pires, P. A. R.; Mustafa, R.; Riaz, N.; El Seoud, O. A. (2017)

Experimental and theoretical studies on solvation in aqueous solutions of ionic liquids carrying different side chains: The n-butyl- versus the methoxyethyl group.

RCS Advances,7, 15952-15963

 4- Achtel, C.; Jedvert, K.; Kosan, B.; El Seoud, O. A.,; Heinze, T. (2017)

Dissolution capacity of novel cellulose solvents based on triethyloctylammonium chloride.

In press, Macromol. Chem. Phys., 218, 1700208

 5- de Jesus J. C.; Pires, P. A. R.; Scharf, M.; A. El. Seoud, O. A (2017)

Solvation by aqueous solutions of imidazole-based ionic liquids: 2- A comparison between alkyl and alkoxy side-chains.

Fluid Phase Equilibria, 451, 48-56.

 6- More, U.U.; Vaid, Z. S.; Rajput, S. M.; Malek, N. I., El Seoud, O. A. (2017)

Effects of 1-alkyl-3-methylimidazolium bromide ionic liquids on the micellar properties of butanediyl-1,4-bis (dimethyldodecylammonium bromide)] gemini Surfactant in aqueous solution

Colloid Polym. Sci., 295, 2351-2361.

 7- Rajput, S. M.; Kumar, S.; Aswal, V. A.; EI Seoud, O. A.; Malek, N. I.; Kumar Kailasa, S. K. (2018)

Drug-induced micelle-to-vesicle transition of a cationic gemini surfactant: Potential applications in Drug Delivery

ChemPhysChem, 19, 1-9.

 8-Vaid, Z. S.; Rajput, S.; Kuddushi, M.; Kumar, A.; El Seoud, O. A.; Malek, N. I. (2018)

Synergistic interaction between cholesterol and functionalized ionic liquid based surfactant leading to the morphological transition

ChemistrySelect, 3, 1300-1308.

 9- Achtel, C.; Jedvert, K.; Kostag, M.; El Seoud, O. A.; Heinze, T. (2018)

Surprising insensitivity of homogeneous acetylation of cellulose dissolved in triethyl(n-octyl)ammonium chloride/molecular solvent on the solvent polarity

Macromol. Matl. Eng. 303, 1800032.

 10- Novaki,L. P.; Lira, R.; Kwon,M. M. N.; de Oliveira, M. C. K.; Meireles, F. A.; Gonzalez, G.; El Seoud, O. A. (2018)

A successful approach to mimic the solvent power of maltenes based on SARA analysis, solvatochromic- and solubility parameters.

Energy & Fuels, 32, 3281−3289

11- El Seoud, O. A.; Novaki, L. P.; Possidonio, S.; Chinelatto, A. M.; d’Almeida e Silva, M. J. L.; Brotero,  P.P. (2018)

The chemistry of beverages for high school students: A project on extraction and analysis of caffeine from guaraná powder

JLabChemEduc, 6, 12-17

 12- Kostag, M.; Jedvert, K.; Achtel, C.; Heinze, T.; El Seoud, O. A. (2018)

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

Molcules 23, 511

 13- Heinze, T.; El Seoud, O. A.; Koschella, A (2018)

Book: Cellulose Derivatives: Synthesis, Structure, and Properties, Springer Series on Polymer and Composite Materials, 531pp. ISSN 2364-1878 (

 14- Cabello, M. D.; El Seoud, O. A.; Baader, W. J. (2018)

Effect of ionic liquids on the kinetics ans quantum efficiency of peroxyoxalate chemiluminescence in aqueous media

J. Photochem. Phobiolog. A., 367, 471-478.15- Kuddushia, M.; Patela, N. K.; Rajputa, S.; Shaha, A.; El Seoud, O. A.; Maleka, N. I. (2018)

15-Thermo-switchable de Novo Ionic Liquid Based Gelators with Dye Absorbing and Drug Encapsulating Characteristics

ACS Omega, 3, 12068−12078

16- Tayel, A.; Ramadan, A.; El Seoud, O. A. (2018)

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

Catalysis, 8, 491.

17-Thermo-switchable de Novo Ionic Liquid Based Gelators with Dye Absorbing and Drug Encapsulating Characteristics

Kuddushia, M.; Patela, M. K.; Rajputa, S.; Shaha, A.; El Seoud, O. A.; Maleka, N. I. (2018)

ACS Omega, 3, 12068−12078

 18- Novaki, L. P.; Keppeler, N.; Kwon, M. M. N.; Paulucci, L. T.; de Oliveira, M. C. K.;. Meireles, F. A.; Baader, W. J.;  El Seoud, O. A. (2019)

Dissolution of asphaltene in binary mixtures of organic solvents and model maltenes: Unambiguous evidence for asphaltene preferential solvation and relevance to assessing the efficiency of additives for asphaltene stabilization

Energy & Fuels, 33, 58-67

19- Bioni, T. A.; Malek, N. I.; El Seoud, O. A. (2018)

Kinetics of Cellulose Acylation with Carboxylic Anhydrides and N-acylimidazoles in Ionic Liquid/Molecular Solvent Mixtures: Relevance to the Synthesis of Mixed Cellulose Esters,

Lenzinger Ber. 94 , 57-66

 20- Ferreira, D. C.; Bastos, G. S.; Pfeiffer, A.; Petri, D. F. S.; Heinze, T.; El Seoud, O. A. (2018)

Cellulose Carboxylate/Tosylate Mixed Esters: Dependence of their Physicochemical Properties

on the Degree of Carboxylate Substitution

Lenzinger Ber. 94, 43-55

 21- Ferreira, D. C.; Oliveira, M. L.; Bioni, T. A.; Nawaz, H.; King, A. W.; Kilpeläinen, I.; Hummeld, M.; Sixta, H.; El Seoud, O. A. (2019)

Binary mixtures of ionic liquids-DMSO as solvents for the dissolution and derivatization of cellulose: Effects of alkyl and alkoxy side chains

Carbohy. Polym., 212, 206-214

 22- Kostag, M.; Gericke, M.; Heinze, T. El Seoud, O. A. (2019)

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

Cellulose, 26, 139-184.

 23- Godoy, A. P.; Ecorchard, P.; Benes, h.; Tolasz, J.; Smržová, d.; Pedrotti, j.; El Seoud4, O. A.; Ricardo K. Donato, R. K. (2019)

Ultrasound exfoliation of graphite in biphasic liquid systems containing (eliminate: polyaromatic) ionic liquids: a successful protocol for obtaining large few-layers graphene

In press, Ultrasonics - Sonochemistry

 24- Pires, P. A. R.; El Seoud, O. A.; Machado, V. G.; de Jesus, J. C.; de Melo, C. E. A.; Buske, J. L. O.;  Cardozo, A. P. (2019)

Understanding solvation: Comparison of Reichardt’s solvatochromic probe and related molecular “core” structures

In press, J. Chem. Eng. Data

Curriculo (Sistema Lattes - CNPq)

Curriculo (Sistema Researcher ID)