Autores: informamos que, a partir do próximo fascículo (39/9), a revista Química Nova adotará a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.
The Board of Directors of the Sociedade Brasileira de Química-SBQ (publisher of the Química Nova-QN) decided that QN will adopt the full open access format in which authors are required to cover part of the publication costs for their articles. See more...
Lais R. LimaI; Daniele B. SantosI; Molíria V. SantosI; Hernane S. BarudI,II,*; Mariana A. HenriqueIII; Daniel PasquiniIII; Edison PecoraroI; Sidney J. L. RibeiroI
A suspension of nanocrystals was obtained by acid hydrolysis of bacterial cellulose. After evaporation of water, nanocrystals films were formed with iridescent characteristics.
Benôit MichelI; Mateus Tomaz NevesI; Rita de Cássia Superbi de SousaI,*; Marcelo Martins das ChagasI; Bruna Amaral MartinsI; Jane Sélia dos Reis CoimbraII
Protein partition using aqueous two-phase systems (ATPS) composed of ionic liquids and potassium phosphate. Four ionic liquids were evaluated for their ability to form ATPS and to partition whey proteins.
Claudenete Vieira LealI,*; Diego Stéfani Teodoro MartinezII,III; Andréa Rodrigues EspósitoI; Bruna Antunes MásI,IV; Ana Carolina Mazarin MoraesII; Oswaldo Luiz AlvesII; Eliana Aparecida Rezende de DuekI,IV
Multiwalled carbon nanotubes were purified and characterized for use in biomedical applications. Cell cultures were performed on the nanocomposite of poly (L-lactic acid) and purified carbon nanotubes to evaluate their cytocompatibility.
Thalita S. TaiariolI,*; Elizabete Y. KawachiI; Luiz C. PardiniI,II
Viscosity measurements and differential scanning calorimetry were used to characterize polymeric solutions. Fourier transform infrared spectroscopy was used to characterize the formed gels.
Ghodsi Mohammadi ZiaraniI,*,#; Razieh MoradiI; Negar LashgariII; Alireza BadieiII; Ali Abolhasani SoorkiIII
Sulfonic acid functionalized SBA-15 nanoporous material (SBA-Pr-SO3H) with a pore size of 6 nm was applied as an efficient heterogeneous nanoporous acid catalyst in the reaction of isatin with pyrazolones under mild reaction conditions.
Amira ArciniegasI; Ana L. Pérez-CastorenaI,*; Antonio Nieto-CamachoI; Jhon Ironzi MaldonadoI; José Luis VillaseñorII; Alfonso Romo de VivarI
Eremophilanolide compounds (2-6) and chlorogenic acid (7) were isolated from Roldana platanifolia. The acetone and methanol extracts showed dose dependent activities with ID50 0.21 and 0.32 mg/ear, respectively, on the TPA model of induced acute inflammation.
Elian Meneses OliveiraI; Jez Willian Batista BragaII,*; Alexandre Florian da CostaI
Direct measurements of molecular fluorescence and PLS-DA data analysis as an efficient method for discriminating between similar woods.
Fernando Carreño; Karina Paese; Carolina de Miranda Silva; Sílvia S. Guterres; Teresa Dalla Costa*
Quetiapine lipid-core nanocapsules were prepared and using an HPLC/UV method, it was possible to determine the distribution of the drug in the pseudo-phases of the colloidal formulation.
Masoumeh Orojloo; Fereshteh Nourian; Raziyeh Arabahmadi; Saeid Amani*,#
Three new complexes of Ni(II), Cu(II), and Zn(II) cations are described. All three compounds have the general formula [M(L)2(H2O)2]. All complexes have been synthesized in a one-step synthesis and characterized by spectroscopy.
Iuri B. de BarrosI,II; Cecília Volkmer RibeiroIII; Valdir F. da Veiga JuniorII,*
The presence of volatile compounds (mainly hexadecanol, 51.6%) and cholesterol in the Amazonian freshwater sponge Trochospongilla paulula (Spongillidae) contributes to the "smell" of the river, and reinforces previous observations of the chemotaxonomic importance of chemical studies of these organisms.
José Dilson F. da SilvaI,II; Yara P. da SilvaIII; Clarisse M. S. PiatnickiIII; Wolmir José BöckelIV; Carla R. B. MendonçaI,*
Microemulsions are optically transparent, isotropic, and thermodynamically stable microheterogeneous dispersions of immiscible liquids. The transparency is a consequence of the small cross-sectional size of the dispersed droplets.
Luci K. M. Quines; Mélodi Schmidt; Kellen Zanfonato; Willibaldo Schmidell; Gláucia M. F. Aragão*
Processes for extracting polyhydroxyalkanoates (PHAs), which are biopolymers stored as an intracellular energy and reserve source in bacterial biomass, are described.
Rodrigo M. C. PintoI; Bruna M. LemesI; Acácio A. F. ZielinskiII; Traudi KleinI; Fernado de PaulaIII; Airton KistIV; Anna S. F. MarquesV; Alessandro NogueiraII; Ivo M. DemiateII; Flávio L. BeltrameI,*
Quality by design model, multivariate study, UHPLC-MS, and HPLC-DAD were used to develop and optimize the quality control method for the main phytochemical markers of Ilex paraguariensis.
Sandra StetsI; Barbara Duarte da SilvaI; Talita Maria TavaresI; Gilcélia A. CordeiroI; Noemi NagataI; Christiana Andrade PessoaII; Patricio Peralta-ZamoraI,*
Alternative calibration methods, including multivariate calibration routines, increase the potentiality of electronic spectroscopy, facilitating its use in the simultaneous determination of mutually interfered species.
Leonardo Silva-Dias; Alejandro López-Castillo*
Brusselator results were obtained from the Practical Stochastic Model for N=100 (blue) and N=104 (black), with [A] = 0.5, [B] = 1.4 and initial conditions of [X]0 = 1 and [Y]0 = 0.1.
Frederico Silva Castelo BrancoI,II; Bárbara V. SilvaII; Gabriel Freitas do RioII; Mábio João SantanaIII; Luiz Henrique Keng Queiroz JúniorIII; Angelo C. PintoII; Núbia BoechatI; Luciano Morais LiãoIII,*
Nuclear magnetic resonance of organofluorine compounds: a challenge in the teaching of spectroscopy.
Francisco L. F. da SilvaI; Thalita O. A. DuarteI; Allan N. S. DantasII; Gisele S. LopesI; Sandro T. GouveiaI; Wladiana O. MatosI,*
Treatment of laboratory trace element analysis wastes for reuse in qualitative analysis in undergraduate course.
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