Cover Picture

227 Chemistry at the Interface Faruk Nome and Larry Romsted

Editorial

Contents

Vol. 27, No. 2, February, 2016

ISSN 0103-5053JBCSJournal of the Brazilian Chemical Society

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.

J. Braz. Chem. Soc.vi

Review239 Self-Assembled Networks and Molecular Gels Derived from

Long-Chain, Naturally-Occurring Fatty AcidsMohan Zhang and Richard G. Weiss

Graphical AbstractA 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

Account229 Electrified Water: Liquid, Vapor and Aerosol

Thiago A. L. Burgo and Fernando Galembeck

Graphical AbstractWater 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

256 Intended and Unintended Consequences and Applications of Unnatural Interfaces: Oligo p-Phenylene Ethynylene Electrolytes, Biological Cells and BiomacromoleculesHarry C. Pappas, Patrick L. Donabedian, Kirk S. Schanze and David G. Whitten

Graphical AbstractOligo phenylene ethynylenes are a class of conjugated polyelectrolyte

that have been found to exhibit diverse biosensing and biocidal properties

267 Modeling Chemical Reactivity in Ionic Detergent Micelles: a Review of FundamentalsFrank H. Quina

Graphical AbstractAn 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

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285 Multifunctional Imidazole-Derived Polymeric Catalyst for Dephosphorylation Reactions Potentiated by Cationic and Anionic MicellesElisa S. Orth and Renan B. Campos

Graphical AbstractImidazole-derived polymer efficiently catalyzes dephosphorylation

reactions, which is enhanced by cationic and anionic micelles

295 Improving the Electroluminescence of [Zn(salophen)(OH2)] in Polyfluorene-Based Light-Emitting Diode: The Role of Energy Transfer and Charge RecombinationJosé C. Germino, Fernando J. Quites, Gregório C. Faria, Romildo J. Ramos and Teresa D. Z. Atvars

Graphical AbstractAquo[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)

278 Thermal Decomposition of Polymer/Montmorillonite Nanocomposites Synthesized in situ on a Clay SurfaceBruno D. Fecchio, Silvano R. Valandro, Miguel G. Neumann and Carla C. S. Cavalheiro

Graphical AbstractPolymer-clay nanocomposites are more resistant to thermal degradation

than the mere polymer

Articles

303 Synthesis and Characterization of Mesoporous Nb2O5 and Its Application for Photocatalytic Degradation of the Herbicide MethylviologenDouclasse C. Castro, Rodrigo P. Cavalcante, Juliana Jorge, Marco A. U. Martines, Lincoln C. S. Oliveira, Gleison A. Casagrande and Amilcar Machulek Jr.

Graphical AbstractNiobium oxides were synthesized and characterized, and their

photocatalytic activity evaluated on the degradation of the herbicide methylviologen

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J. Braz. Chem. Soc.viii

321 Production of Additives with Antimicrobial Activity via Tandem Hydroformylation-amine Condensation of Soybean FAME Using an Ionic Liquid-Based Biphasic Catalytic SystemHugo F. Ramalho, Karlla M. C. Ferreira, Paula M. A. Machado, Tamyris B. Silva, Ellen T. Rangel, Marcos J. Prauchner and Paulo A. Z. Suarez

Graphical AbstractDevelopment of an efficient biphasic system to obtain an antimicrobial

modified biodiesel

334 AuNP@TiO2 Catalyzed Peroxidation of Ethyl- and n-Propylbenzene: Exploring the Interaction Between Radical Species and the Nanoparticle SurfaceCharles-Oneil L. Crites, José Carlos Netto-Ferreira, Geniece L. Hallett-Tapley and Juan Cesar Scaiano

Graphical AbstractThe peroxidation of n-propylbenzene and ethylbenzene proceeds via

reactive oxygen species present on the gold nanoparticles (AuNP) surface

314 Dynamics of Drop Impact Against Surfaces Covered with Langmuir-Blodgett LayersNatália Gonçalves, Paulo B. Miranda and Edvaldo Sabadini

Graphical AbstractA sequence of the impact of a small droplet against a glass surface

covered with Langmuir-Blodgett monolayers of zinc stearate

341 Comparing Photo-Fenton Degradation of Malachite Green Using FeII and FeIII Salts Under UVA Light IrradiationDenis Fuentealba, Carolina Venegas, Marlene Morales and Oscar Waissbluth

Graphical AbstractMalachite green degradation using photo-Fenton process with FeIII was

compared with FeII under optimized conditions

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363 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 and Rochel M. Lago

Graphical AbstractSchematic representation for the electron transfer through the

composites during the sulfide oxidation

372 Zwitterionic Surfactant Stabilized Palladium Nanoparticles as Catalysts in Aromatic Nitro Compound ReductionsFranciane D. Souza, Haidi Fiedler and Faruk Nome

Graphical AbstractReduction 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

349 Self-Organization in Ionic Liquids: From Bulk to Interfaces and FilmsKarina Shimizu, Mohammad Tariq, Adilson A. Freitas, Agílio A. H. Pádua and José N. C. Lopes

Graphical AbstractIonic liquids are considered potential substitutes for traditional solvents. Combined computational and experimental methods are unraveling their

unique properties.

382 Study of the Mode of Inclusion for 7-Hydroxyflavone in β-Cyclodextrin ComplexesBruno H. Fumes, Mariana R. Guzzo, Antonio E. H. Machado and Laura T. Okano

Graphical AbstractOptimized 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

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J. Braz. Chem. Soc.x

402 Synthesis, Physicochemical and Photophysical Characterization of 4-(1-Pyrenyl)-butyl-α-D-mannopyranosideCatalina Sandoval, Franco S. Arriagada, Julio R. De la Fuente, Susana A. Sanchez, Javier Morales, Nancy Pizarro, Santi Nonell and German Gunther

Graphical AbstractThe synthesized mannose derivative linked through a short methylene

chain to a pyrene moiety retains the photophysical behavior of non-substituted pyrene

411 Oxidative Modifications in Crystallin Proteins and Lens Epithelial Cells Associated with Photosensitized Reactions Mediated by the Major Chromophore Arising from Glucose DegradationFrancisco Vargas, María Inés Becker, Bertrand Friguet, Eduardo Silva and Felipe Ávila

Graphical AbstractChromophores arising from glucose degradation induce oxidative

modifications in lens proteins and lens epithelial cells through photosensitized reactions

392 Structural Parameters of Lamellar Phases Formed by the Self-Assembly of Dialkyldimethylammonium Bromides in Aqueous SolutionGuilherme A. Ferreira and Watson Loh

Graphical AbstractDue 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

423 Ultrafast Dynamics of Au Nanopyramid Interfaces Prepared by Nanosphere Lithography: Effect of Substrate Chemical CompositionGuilherme F. Ferbonink, Edna R. Spada, Diego P. dos Santos, Maria L. Sartorelli and Rene A. Nome

Graphical AbstractWavelength-dependent pump-probe measurements across the surface

plasmon resonance spectrum of Au nanopyramids

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