Tcnq
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. STUDY OF SPECTROPHOTOMETRIC CHARACTERISTICS OF THE CHARGE TRANSFER COMPLEX OF TAURINE DRUG WITH 7,7,8,8-TETRACYANOQUINODIMETHANE
A new spectrophotometric method was developed for the determination of taurine using 7,7,8,8-tetracyanoquinodimethane (TCNQ). The method was based on the formation of charge transfer (CT) complex of this drug as n-electron donor with the π-acceptor TCNQ. TCNQ was found to react with taurine to produce a kind of yellow complex. The spectrum obtained for taur
Quím. Nova. Publicado em: 2020-09
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2. Development of a Selective and Sensitive Sensor for Urate Determination Based on Tris(1,10-phenantroline)copper(II) Bis(tetracyanoquinodimethanide) Adsorbed on Carbon Nanotubes
The present work describes the development of a selective electrochemical sensor for urate based on tris(1,10-phenantroline)copper(II) bis(tetracyanoquinodimethanide) (Cu(phen)3(TCNQ)2) adsorbed on multi-walled carbon nanotubes (CNT). The composite material was characterized by infrared spectroscopy, scanning electron microscopy, and electrochemical impedanc
J. Braz. Chem. Soc.. Publicado em: 2015-10
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3. DESENVOLVIMENTO DE MÉTODOS EMPREGANDO SPME-GC/MS E BIOSSENSORES AMPEROMÉTRICOS PARA ANÁLISE DO INSETICIDA PARATION METÍLICO EM AMOSTRAS DE ARROZ IN NATURA / DEVELOPMENT AND METHODS EMPLOYING SPME-GC/MS AMPEROMETRIC BIOSENSOR FOR METHYL PARATHION ANALYSIS OF PESTICIDE IN SAMPLES OF RICE IN NATURA
Os inseticidas organofosforados, em especial aqueles à base do princípio ativo paration metílico, têm sido extensivamente usados na proteção de cultivos de arroz no Estado do Maranhão. Neste trabalho, foi otimizado um método cromatográfico para determinação do inseticida paration metílico usando microextração em fase sólida em ambiente confina
Publicado em: 2010
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4. SÃntese e caracterizaÃÃo de complexos bipiridÃnicos de rutÃnio com ligantes polinitrilados / Synthesis and characterization of complexes bipiridÃnicos of ruthenium with metalto-ligand
In this work, the [Ru(bpy)(dcbpy)(TCNQ)Cl] and [Ru(bpy)(dcbpy)(TCNE)Cl] complexes, called Ru-TCNQ and Ru-TCNE, respectively, where bpy = 2,2â- bipyridine and dcbpy = 4,4â-dicarboxy-2,2â-bipyridine, were synthesized and characterized by spectroscopy and electrochemical techniques. The absorption spectra of the Ru-TCNQ and Ru-TCNE complexes showed bands ass
Publicado em: 2007
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5. Desenvolvimento de sensores eletroquimicos a base de filmes com TCNX (tetracianoquinodimethane e tetracyanoetileno) para a determinação de compostos fenolicos / Development of electrochemical sensors based on films containing TCNX (tetracyanoquinodimetano e tetracianoethylene) for phenolics compound determination
Neste trabalho é descrito o desenvolvimento de sensores eletroquímicos à base de compostos com TCNX (tetracianoetileno e tetracianoquinodimetano) para a determinação de compostos fenólicos. Para este propósito foram preparados eletrodos de carbono vítreo modificados com tetracianoetileneto de lítio (LiTCNE) e bis(tetracianoquinodimetaneto) de bis(fe
Publicado em: 2007
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6. Estudo de complexos de ferro-cyclam com ligantes carboxilados e polinitrilados / Study of complexes of iron-cyclam with carboxylate ligants and polinitrilate
The main objective of this work is to contribute with the chemistry of the system Fe-Cyclam through the synthesis and characterization of complexes with carboxylate ligants, acetate and oxalate, and polinitrilate ligands, 7,7,8,8-tetracyanoquinodimethane (TCNQ) and tetracyanoethylene (TCNE). The infrared spectra of the cis-[Fe(cyclam)ox]PF6 complex allowed t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2006
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7. Development of an amperometric electrode for determination of glutathione in erythrocytes / Desenvolvimento de um eletrodo amperometrico para determinação de glutationa em eritrocitos
This work describes the development of a new amperometric method for glutathione determination in erythrocytes. For this task, a carbon paste electrode modified with tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) complex was developed. The modified electrode improved the transference of electrons between the glutathione and electrode being very sensi
Publicado em: 2005
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8. Propriedades elétricas e físico-químicos de blendas de poli (sulfeto de p-fenileno) - pps com um cristal líquido polimérico (LCP) / Electrical and physical chemistry properties of poli (p-phenylene sulfide) with a liquid crystal polymer
Poly (p-phenylene sulphide) (PPS) is an engineering thermoplastic, with high thermal and chemical resistance, and. with a growing industrial importance, due to its easy processability in the form of films, fiaments and injection molded articles. It also can be chemically doped and. therefore be a conductive polymer (σ = 10 S/cm, by doping with AsF5); ho
Publicado em: 1997
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9. Medidas de luminescencia em semicondutores excitados visando detetar ondas de densidade de carga
No capitulo I descrevem-se as propriedades elementares gerais de ondas de densidade de carga em condições de equilíbrio termodinâmico, dando ênfase à evidência experimental de existência desses fenômenos. Assim, mencionam-se as experiências de torque anômalo em monocristais esféricos de potássio, os satélites em figuras de difração de raios-X
Publicado em: 1985