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Current Issue vol. 27, No. 2, 2016, p. 227-423

 

Chemistry at the Interface

This special issue of JBCS is dedicated to the area of Chemistry at the Interface, a rather broad area in which Brazilian scientists have obtained international recognition and where concepts and theoretical frameworks were developed and published in high quality international journals.
About 40 years ago a core of researchers working in Brazil including professors Frank Quina, Hernán Chaimovich, Omar El Seoud and Faruk Nome at both the University of São Paulo and the Federal University of Santa Catarina initiated a large area of research of international quality that spanned all types of association colloids such as micelles, microemulsions, and vesicles, but also emulsions, vesicles, biological membranes, and protein-surfactant interactions. At about the same time, remarkably productive international collaborations began with contemporaries who became long time friends including Clifford Bunton, Richard Weiss, Laurence Romsted, Janos Fendler and Eduardo Lissi.
(Read more at Editorial)

Special Issue Chemistry at the Interface



Cover Article
J. Braz. Chem. Soc. 2016, 27(2), 267-277

Modeling Chemical Reactivity in Ionic Detergent Micelles: a Review of Fundamentals

Frank H. Quina

How to cite this article

The modulation of reactivity by interfaces is of fundamental importance in chemical and biochemical systems. The pseudophase assumption coupled with ion selectivity at the interface are sufficient to reproduce (as well as predict) many of the effects of simple ionic detergent micelles on chemical reactivity. These concepts illuminatethe underlyingrelationships betweenchemical and photochemical reactivity and the structural and electrostatic properties of charged interfaces. Details are presented in the Review Modeling Chemical Reactivity in Ionic Detergent Micelles: a Review of Fundamentals by Frank H. Quina on page 267.

http://dx.doi.org/10.5935/0103-5053.20150311

Published online: November 13, 2015

Editorial J. Braz. Chem. Soc. 2016, 27(2), 227

Chemistry at the Interface

Faruk Nome; Larry Romsted

How to cite this article

 

http://dx.doi.org/10.5935/0103-5053.20160019


Account J. Braz. Chem. Soc. 2016, 27(2), 229-238

Electrified Water: Liquid, Vapor and Aerosol

Thiago A. L. Burgo; Fernando Galembeck

How to cite this article

 

Water with excess charge is the outcome of many different events triggered by electric fields or by interfacial phenomena that produce non-electroneutral water, either liquid, solid or vapor, due to excess H+ or OH- concentration.

http://dx.doi.org/10.5935/0103-5053.20150303

Published online: November 9, 2015

Review J. Braz. Chem. Soc. 2016, 27(2), 239-255

Self-Assembled Networks and Molecular Gels Derived from Long-Chain, Naturally-Occurring Fatty Acids

Mohan Zhang; Richard G. Weiss

How to cite this article

 

A systematic, critical summary is presented of correlations between the structures of molecular gelators derived from long-chain, naturally-occurring fatty acids and the properties of their gels.

http://dx.doi.org/10.5935/0103-5053.20150247

Published online: September 22, 2015

J. Braz. Chem. Soc. 2016, 27(2), 256-266

Intended and Unintended Consequences and Applications of Unnatural Interfaces: Oligo p-Phenylene Ethynylene Electrolytes, Biological Cells and Biomacromolecules

Harry C. Pappas; Patrick L. Donabedian; Kirk S. Schanze; David G. Whitten

How to cite this article

 

Oligo phenylene ethynylenes are a class of conjugated polyelectrolyte that have been found to exhibit diverse biosensing and biocidal properties.

http://dx.doi.org/10.5935/0103-5053.20150260

Published online: October 6, 2015

J. Braz. Chem. Soc. 2016, 27(2), 267-277

Modeling Chemical Reactivity in Ionic Detergent Micelles: a Review of Fundamentals

Frank H. Quina

How to cite this article

 

An overview of our current understanding of the interplay between micellar structure and electrostatics, selectivity, solubilization, and reactivity and the analysis of micellar effects on reactivity and equilibria.

http://dx.doi.org/10.5935/0103-5053.20150311

Published online: November 13, 2015

Articles J. Braz. Chem. Soc. 2016, 27(2), 278-284

Thermal Decomposition of Polymer/Montmorillonite Nanocomposites Synthesized in situ on a Clay Surface

Bruno D. Fecchio; Silvano R. Valandro; Miguel G. Neumann; Carla C. S. Cavalheiro

How to cite this article

 

Polymer-clay nanocomposites are more resistant to thermal degradation than the mere polymer.

http://dx.doi.org/10.5935/0103-5053.20150216

Published online: August 28, 2015


J. Braz. Chem. Soc. 2016, 27(2), 285-294

Multifunctional Imidazole-Derived Polymeric Catalyst for Dephosphorylation Reactions Potentiated by Cationic and Anionic Micelles

Elisa S. Orth; Renan B. Campos

How to cite this article

 

Imidazole-derived polymer efficiently catalyzes dephosphorylation reactions, which is enhanced by cationic and anionic micelles.

http://dx.doi.org/10.5935/0103-5053.20150228

Published online: September 4, 2015


J. Braz. Chem. Soc. 2016, 27(2), 295-302

Improving the Electroluminescence of [Zn(salophen)(OH2)] in Polyfluorene-Based Light-Emitting Diode: The Role of Energy Transfer and Charge Recombination

José C. Germino; Fernando J. Quites; Gregório C. Faria; Romildo J. Ramos; Teresa D. Z. Atvars

How to cite this article

 

Aquo[N,N'-bis(salicylidene)-o-phenylenediamine]zinc(II) ([Zn(salophen)(OH)2]) exhibits low photoluminescence (PL) and electroluminescence (EL) properties. However, due to the high energy transfer and charge recombination from the poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(9,9-di-{5'-pentanyl}-fluorenyl-2,7-diyl)] (PFOFPen) blue luminescent polymer, [Zn(salophen)(OH)2] exhibits an intense EL, combining polyfluorene and coordination compounds, and generates a near-white light organic light-emitting diode (OLED).

http://dx.doi.org/10.5935/0103-5053.20150243

Published online: September 18, 2015


J. Braz. Chem. Soc. 2016, 27(2), 303-313

Synthesis and Characterization of Mesoporous Nb2O5 and Its Application for Photocatalytic Degradation of the Herbicide Methylviologen

Douclasse C. Castro; Rodrigo P. Cavalcante; Juliana Jorge; Marco A. U. Martines; Lincoln C. S. Oliveira; Gleison A. Casagrande; Amilcar Machulek Jr.

How to cite this article

 

Niobium oxides were synthesized and characterized, and their photocatalytic activity evaluated on the degradation of the herbicide methylviologen.

http://dx.doi.org/10.5935/0103-5053.20150244

Published online: September 18, 2015

J. Braz. Chem. Soc. 2016, 27(2), 314-320

Dynamics of Drop Impact Against Surfaces Covered with Langmuir-Blodgett Layers

Natália Gonçalves; Paulo B. Miranda; Edvaldo Sabadini

How to cite this article

 

A sequence of the impact of a small droplet against a glass surface covered with Langmuir-Blodgett monolayers of zinc stearate.

http://dx.doi.org/10.5935/0103-5053.20150248

Published online: September 22, 2015

J. Braz. Chem. Soc. 2016, 27(2), 321-333

Production of Additives with Antimicrobial Activity via Tandem Hydroformylationamine Condensation of Soybean FAME Using an Ionic Liquid-Based Biphasic Catalytic System

Hugo F. Ramalho; Karlla M. C. Ferreira; Paula M. A. Machado; Tamyris B. Silva; Ellen T. Rangel; Marcos J. Prauchner; Paulo A. Z. Suarez

How to cite this article

 

Development of an efficient biphasic system to obtain an antimicrobial modified biodiesel.

http://dx.doi.org/10.5935/0103-5053.20150250

Published online: September 25, 2015

J. Braz. Chem. Soc. 2016, 27(2), 334-340

AuNP@TiO2 Catalyzed Peroxidation of Ethyl- and n-Propylbenzene: Exploring the Interaction Between Radical Species and the Nanoparticle Surface

Charles-Oneil L. Crites; José Carlos Netto-Ferreira; Geniece L. Hallett-Tapley; Juan Cesar Scaiano

How to cite this article

 

The peroxidation of n-propylbenzene and ethylbenzene proceeds via reactive oxygen species present on the gold nanoparticles (AuNP) surface.

http://dx.doi.org/10.5935/0103-5053.20150254

Published online: September 29, 2015


J. Braz. Chem. Soc. 2016, 27(2), 341-348

Comparing Photo-Fenton Degradation of Malachite Green Using FeII and FeIII Salts Under UVA Light Irradiation

Denis Fuentealba; Carolina Venegas; Marlene Morales; Oscar Waissbluth

How to cite this article

 

Malachite green degradation using photo-Fenton process with FeIII was compared with FeII under optimized conditions.

http://dx.doi.org/10.5935/0103-5053.20150258

Published online: October 2, 2015


J. Braz. Chem. Soc. 2016, 27(2), 349-362

Self-Organization in Ionic Liquids: From Bulk to Interfaces and Films

Karina Shimizu; Mohammad Tariq; Adilson A. Freitas; Agílio A. H. Pádua; José N. C. Lopes

How to cite this article

 

Ionic liquids are considered potential substitutes for traditional solvents. Combined computational and experimental methods are unraveling their unique properties.

http://dx.doi.org/10.5935/0103-5053.20150274

Published online: October 21, 2015

J. Braz. Chem. Soc. 2016, 27(2), 363-371

Cellulose Nanocrystals Assembled on the Fe3O4 Surface as Precursor to Prepare Interfaced C/Fe3O4 Composites for the Oxidation of Aqueous Sulfide

Igor T. Cunha; Ivo F. Teixeira; João P. Mesquita; José D. Ardisson; Ildefonso Binatti; Fabiano V. Pereira; Rochel M. Lago

How to cite this article

 

Schematic representation for the electron transfer through the composites during the sulfide oxidation.

http://dx.doi.org/10.5935/0103-5053.20150283

Published online: October 27, 2015


J. Braz. Chem. Soc. 2016, 27(2), 372-381

Zwitterionic Surfactant Stabilized Palladium Nanoparticles as Catalysts in Aromatic Nitro Compound Reductions

Franciane D. Souza; Haidi Fiedler; Faruk Nome

How to cite this article

 

Reduction of aromatic nitro compounds proceeds via nitroso and hydroxylamine derivatives and that the intermediate molecules leave the nanoparticle surface, with the reaction proceeding in several steps where adsorption and desorption are observed in each step of the reaction.

http://dx.doi.org/10.5935/0103-5053.20150284

Published online: October 29, 2015


J. Braz. Chem. Soc. 2016, 27(2), 382-391

Study of the Mode of Inclusion for 7-Hydroxyflavone in β-Cyclodextrin Complexes

Bruno H. Fumes; Mariana R. Guzzo; Antonio E. H. Machado; Laura T. Okano

How to cite this article

 

Optimized structure of the 7-hydroxyflavone-β-cyclodextrin complex assuming that inclusion occurred via the phenyl group of the flavonoid molecule. This mode of inclusion produced a more stable complex.

http://dx.doi.org/10.5935/0103-5053.20150292

Published online: October 30, 2015


J. Braz. Chem. Soc. 2016, 27(2), 392-401

Structural Parameters of Lamellar Phases Formed by the Self-Assembly of Dialkyldimethylammonium Bromides in Aqueous Solution

Guilherme A. Ferreira; Watson Loh

How to cite this article

 

Due to repulsive electrostatic forces, dioctadecydimethylammonium bromide DODAB (di-C18) bilayers are thinner and swell more than those formed by didodecyl bromide DDAB (di-C12) surfactant.

http://dx.doi.org/10.5935/0103-5053.20150297

Published online: November 6, 2015


J. Braz. Chem. Soc. 2016, 27(2), 402-410

Synthesis, Physicochemical and Photophysical Characterization of 4-(1-Pyrenyl)-butyl-α-D-mannopyranoside

Catalina Sandoval; Franco S. Arriagada; Julio R. De la Fuente; Susana A. Sanchez; Javier Morales; Nancy Pizarro; Santi Nonell; German Gunther

How to cite this article

 

The synthesized mannose derivative linked through a short methylene chain to a pyrene moiety retains the photophysical behavior of non-substituted pyrene.

http://dx.doi.org/10.5935/0103-5053.20150306

Published online: November 10, 2015


J. Braz. Chem. Soc. 2016, 27(2), 411-422

Oxidative Modifications in Crystallin Proteins and Lens Epithelial Cells Associated with Photosensitized Reactions Mediated by the Major Chromophore Arising from Glucose Degradation

Francisco Vargas; María Inés Becker; Bertrand Friguet; Eduardo Silva; Felipe Ávila

How to cite this article

 

Chromophores arising from glucose degradation induce oxidative modifications in lens proteins and lens epithelial cells through photosensitized reactions.

http://dx.doi.org/10.5935/0103-5053.20150315

Published online: November 16, 2015


J. Braz. Chem. Soc. 2016, 27(2), 423

Ultrafast Dynamics of Au Nanopyramid Interfaces Prepared by Nanosphere Lithography: Effect of Substrate Chemical Composition

Guilherme F. Ferbonink; Edna R. Spada; Diego P. dos Santos; Maria L. Sartorelli; Rene A. Nome

How to cite this article

 

Wavelength-dependent pump-probe measurements across the surface plasmon resonance spectrum of Au nanopyramids.

http://dx.doi.org/10.5935/0103-5053.20150344

Published online: December 4, 2015

Online version ISSN 1678-4790 Printed version ISSN 0103-5053
Journal of the Brazilian Chemical Society
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