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13:17, dom nov 17








Autores: A partir do fascículo 39/9 a revista Química Nova adotou a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.

Edição Atual vol. 42, No. 9, 2019, p. 991-1121

 

Submission procedures for OPEN ACCESS

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...



Artigo de Capa
Quim. Nova 2019, 42(9), 991-992

Hans Stammreich: um dos presentes de Hitler

Dalva L. A. de Faria; Marcia L. A. Temperini

http://dx.doi.org/10.21577/0100-4042.20170429

Assuntos Gerais Quim. Nova 2019, 42(9), 993-1002

 

Hans stammreich: uma perspectiva histórica

Dalva L. A. de Faria


The history of Raman spectroscopy in Brazil begins with the cinematic escape from Europe by Hans Stammreich, a jewish scientist persecuted by the Nazists, and continues in a newly created University in South America.

http://dx.doi.org/10.21577/0100-4042.20170433

Publicado online: outubro 24, 2019
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Quim. Nova 2019, 42(9), 1003-1006

 

A personal view of the legacy of professor Hans Stammreich

José M. Riveros


Long-wave excitation for Raman spectroscopy pioneered by Professor Hans Stammreich allowed to obtain for the first time the Raman spectrum of substances opaque to visible radiation.

http://dx.doi.org/10.21577/0100-4042.20170431

Publicado online: outubro 22, 2019
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Artigos Quim. Nova 2019, 42(9), 1007-1013

 

Uma releitura dos artigos científicos do Prof. Hans Sstammreich

Mauro C. C. Ribeiro


The original photographic plate used by Prof. Hans Stammreich in a study of the Raman spectrum of iodoform published in 1956.

http://dx.doi.org/10.21577/0100-4042.20170420

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1014-1019

 

Impact of temperature on the stability of silkworm cocoon fibers

Bruno Luís Sacco; Henrique de Santana*


Raman spectra of raw and processed cocoons were compared at different excitation radiations. By correlating the intensity ratios of the deconvoluted Raman bands using the broad bands characteristic of amide I and III, it was possible to evaluate the conformational changes in both materials.

http://dx.doi.org/10.21577/0100-4042.20170413

Publicado online: setembro 18, 2019
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Quim. Nova 2019, 42(9), 1020-1028

 

Raman studies of bis(phenylterpyrazine)iron(II) and supramolecular species with pentacyanidoferrate(II) ions

Ana P. Mangoni; Bruno B. N. S. Brandão; Jorge S. Shinohara; Alceu T. Silveira; Marcelo Nakamura; Henrique E. Toma*


The capability of the terpyrazine complex to bind transition metal ions, such as the [Fe(CN)5]3- species, allowed to generate pentanuclear complexes displaying characteristic charge-transfer and resonance Raman spectra, revealing the pyrazine vibrations in the complex.

http://dx.doi.org/10.21577/0100-4042.20170415

Publicado online: setembro 26, 2019
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Quim. Nova 2019, 42(9), 1029-1037

 

Correlating single-molecule sers statistics to plasmonic nanocluster structure and near-field properties

Dayane V. N. dos Santos; Diego P. dos Santos*


The excitation of surface plasmon resonances creates strong local field amplifications leading to the observed SERS spectra from adsobed molecules. Mappings over multiple possible molecular adsorption configurations (histogram) probe the near-field plasmonic properties.

http://dx.doi.org/10.21577/0100-4042.20170419

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1038-1043

 

Detection of the peptide p17-1 (HIV) by Surface Enhance Raman Scattering (SERS)

Leandro B. CarneiroI,II; Marli L. MoraesIII; Sidney J. L. RibeiroI,#; Alexandre G. BroloII,IV,*


A SERS immunoassay was implemented to detect the HIV marker protein p-17. The SERS results were treated statistically and compared quantitatively to scanning electron micrograph images.

http://dx.doi.org/10.21577/0100-4042.20170430

Publicado online: outubro 23, 2019
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Quim. Nova 2019, 42(9), 1044-1049

 

Biossensores plasmônicos baseados em espalhamento raman intensificado por superfície utilizando nanobastões de ouroı

LinLinus Pauling F. PeixotoI; Jacqueline F. L. SantosII,#; Gustavo F. S. AndradeI,*


SERS detection of anti-BSA using a sandwich immunoassay based on gold nanorods both in solution and adsorbed on glass slides in an extrinsic method, monitoring Nile blue dye signaling.

http://dx.doi.org/10.21577/0100-4042.20170416

Publicado online: outubro 1, 2019
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Quim. Nova 2019, 42(9), 1050-1055

 

Nanoespectroscopia de absorção de radiação síncrotron no infravermelho para nanoespeciação de produtos de corrosão metálica

Thiago S. PuglieriI,III,*; Raul de O. FreitasII; Francisco C. B. MaiaII; Dalva L. A. de FariaI


The use of complementary techniques, both in micro and nano scales, is of paramount importance to the understanding of metal corrosion processes. Synchrotron infrared nanospectroscopy was here used in the investigation of corrosion products.

http://dx.doi.org/10.21577/0100-4042.20170421

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1056-1065

 

Aspectos químicos na investigação de alguns tipos de eflorescências em bens culturais

Isabela F. S. SantosI,*; Thiago S. PuglieriI,II; Marcia S. BarbosaIII; Ana CardosoIV; Tânia RosadoIV; Milene GilIV; António CandeiasIV; Dalva L. A. de FariaI


Multi-analytical approach for the investigation of efflorescences in cultural assets using vibrational spectroscopy, scanning electron microscopy and microbiological analysis in two types of paintings: tempera on canvas and oil mural painting.

http://dx.doi.org/10.21577/0100-4042.20170422

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1066-1072

 

Esquaraínas Cis e Trans substituídas: aplicação experimental da teoria de grupo em espectroscopia vibracional

Vanessa E. de OliveiraI; Luiz Fernando Cappa de OliveiraII,*


The vibrational spectra of Cis and Trans squaraines suggest high molecular symmetries, and the Group Theory applied here proposes C2v (Cis) and D2v (Trans) symmetries; for Cis has been suggested a different approach to justify such discrepancy: a supramolecular regularity.

http://dx.doi.org/10.21577/0100-4042.20170414

Publicado online: setembro 24, 2019
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Quim. Nova 2019, 42(9), 1073-1080

 

Spectroscopic characterization of pedot:pss conducting polymer by resonance raman and serrs spectroscopies

Pedro V. Almeida; Celly M. S. Izumi; Hélio F. Dos Santos; Antonio C. Sant'Ana*


Application of SERRS and RR spectroscopies to evaluate electronic parameters of PEDOT:PSS with the support of theoretic models of oligomers.

http://dx.doi.org/10.21577/0100-4042.20170417

Publicado online: outubro 1, 2019
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Quim. Nova 2019, 42(9), 1081-1083

 

H. Stammreich and the triple alliance: the molecule, the problem and the instrument

Jayr H. MarinI; Douglas S. LopesI; Paulo S. SantosI,*


H. Stammereich recorded Raman spectra using glass photographic plates. Almost 60 years later we repeated two of his experiments using the best technology available to us.

http://dx.doi.org/10.21577/0100-4042.20170423

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1084-1090

 

Hotspot stabilization of gold nanoparticles for application of quantitative sers in bioanalytical systems

Mónica B. Mamián-LópezI,II,#; Marcia L. A. TemperiniII,*


Hotspot stabilization and analyte-induced aggregation control of colloidal gold nanoparticles allows significant SERS enhancement.

http://dx.doi.org/10.21577/0100-4042.20170424

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1091-1097

 

Investigação do solvatocromismo e ionocromismo do corante azul do nilo através das espectroscopias raman, infravermelho e UV-VIS

Michele Lemos de SouzaI,*; Paola CorioII


The Nile Blue twisted tertiary amine group in low concentration polar solvents presents high energy electronic transition. The tertiary amine group remains in the plane of the molecule in nonpolar solvents, which electronic transition is at higher energy. The intensification of the C-N bond through vibrational spectroscopy in nonpolar solvent was observed.

http://dx.doi.org/10.21577/0100-4042.20170432

Publicado online: outubro 23, 2019
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Quim. Nova 2019, 42(9), 1098-1103

 

Efeitos da temperatura nos espectros raman dos polímeros condutores pedot e MEH-PPV

Alvaro C. C. Barra; Thaeny C. Amaral; Celly M. S. Izumi*


Raman spectra of MEH-PPV and PEDOT:PSS conducting polymers were employed to study the temperature dependence of conjugation and thermal degradation.

http://dx.doi.org/10.21577/0100-4042.20170425

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1104-1111

 

Inventário do sapateiro Damião Simões: um estudo físico-químico do documento mais antigo do estado de São Paulo

Maria T. C. SansivieroI,*; Carlos E. SampietriII; Marcos V. da CostaII; Norma C. CassaresII; Dalva L. A. FariaI


The most ancient manuscript (1578) from the Arquivo Público do Estado de São Paulo, which has both sides covered by thermoplastic film, was analyzed by Raman and FTIR spectroscopies and Scanning Electron Microscopy aiming at its characterization and the access to its preservation state.

http://dx.doi.org/10.21577/0100-4042.20170426

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1112-1115

 

Titanyl sulphate, an inorganic polymer: structural studies and vibrational assignment

Lucia Kiyomi Noda*; Fabricio Ronil Sensato; Norberto Sanches Gonçalves


Anhydrous titanyl sulfate (TiOSO4) was synthesized and characterized by elemental analyses and vibrational spectroscopy by the first time. Raman, infrared and far infrared spectra were obtained, the bands having been tentatively assigned. Essentially, the spectra exhibit the vibrational modes of the sulfate anion splitted by the low local symmetry along with the bands of the TiO6 skeleton.

http://dx.doi.org/10.21577/0100-4042.20170427

Publicado online: outubro 21, 2019
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Quim. Nova 2019, 42(9), 1116-1121

 

Unraveling the solvatochromism of a triarylmethane dye by resonance raman spectroscopy

Natália M. MoneziI; Luiz F. LepreI,II; Rômulo A. AndoI,*


The effect of the solvent on the spectroscopic properties of rosolic acid in neutral and anionic forms was investigated by Raman spectroscopy revealing the induced symmetry changes due to solvent polarity and hydrogen bonding.

http://dx.doi.org/10.21577/0100-4042.20170428

Publicado online: outubro 21, 2019
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