Self Assembled Monolayer
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Efeitos da rugosidade superficial nas propriedades de passivação de monocamadas orgânicas automontadas
Precise surface area is needed for accurate characterization of self-assembled monolayers (SAMs) on metallic surfaces. The aim of this manuscript was to emphasize that miscalculation of surface area is the major source of errors in SAM electrochemical characterization. Limitations are discussed and recommendations given for beginners in analyses of SAM funct
Quím. Nova. Publicado em: 2014
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2. Biossegurança no controle da infecção hospitalar: desenvolvimento de imunossensor impedimétrico para detecção de Staphylococcus aureus em áreas críticas hospitalares / Biosafety in the control of hospital infection: development of an impedimetric immunosensor for detection of Staphylococcus aureus in critical areas of hospitals
The Biosafety is a very important tool for the Control of Hospital Infection establishing through methods, techniques and standards, measures to be adopted in order to prevent and control risks that may contribute to hospital infection. This work reports the development of an impedimetric immunosensor for detection of pathogenic bacteria, specifically Staphy
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/10/2011
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3. PREPARAÇÃO, CARACTERIZAÇÃO E ESTUDOS ELETROQUÍMICOS DE ELETRODOS MODIFICADOS COM DIFERENTES MONOCAMADAS AUTOORGANIZADAS
In this work were studied investigated different types of modifiers for the formation of self-assembled monolayers on the gold surface. The monolayers used were formed by different structural arrangements, alkyl chains and functional groups. The thiols groups used were: 3-mercaptopropionic acid (MPA), thiolactic acid (TLA), cystamine (CYS) and 11-mercaptound
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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4. Caracterização eletroquímica de uma monocamada auto-organizada mista composta por ácido 3-mercaptopropiônico e ácido 11-mercaptoundecanóico / Electrochemical characterization of a mixed 3-mercaptopropionic and 11-mercaptoundecanoic acids self-assembled monolayer
Monocamadas auto-organizadas formadas pela quimissorção de alcanotióis sobre ouro apresentam estruturas bem definidas, organizadas e reprodutíveis. As propriedades de SAMs, aliadas à facilidade de síntese, têm atraído o interesse da comunidade cientifica o que ocasionou um grande avanço na área de nanotecnologia, especialmente em engenharia de supe
Publicado em: 2011
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5. Desenvolvimento de estruturas do tipo bi-camada baseadas em camadas auto-organizadas e polianilina para a proteção contra a corrosão de ligas de alumínio / Development of structures such as bi-layer based on self-assembled monolayers and polyaniline for corrosion protection of aluminum alloys
A method widely used in corrosion protection of aluminum alloys is the formation of conversion layers of chromium. In search of "environmentally friendly" corrosion protection methods there is the possibility of using conducting polymers such as polyaniline (PAni), which can act by barrier effect or absorbing charged particles from the solution and / or self
Publicado em: 2010
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6. Eletrodos modificados com monocamadas auto-organizadas de alcanotióis: uma abordagem sobre a transferência eletrônica / Electrode surface modified with alkanothiols self-assembled monolayers: an electron transfer approach
The modification of electrode surfaces with self-assembled monolayer (SAM) is one of the top subjects in electrochemistry and electroanalysis, mainly due to its much enhanced biocompatibility. In this study, the focuses are centered in the electron transfer through SAMs of alkanothiols assembled onto gold electrode surfaces. In order to investigate the elect
Publicado em: 2008
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7. OrientaÃÃo de anticorpos em alumÃnio empregando monocamadas auto-organizadas para produÃÃo de microssensores capacitativos
There is a growing demand for in situ monitoring of antigen-antibody interaction. Immunosensors based on antigenâantibody interaction have attracted great interest in recent years in various areas. Numerous techniques such as optical, mass-sensitive and electrochemical have been employed for this purpose. Among the electrochemical techniques, a capacitive m
Publicado em: 2007
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8. DeterminaÃÃo da troponina T cardÃaca humana empregando sistema de microbalanÃa de quartzo por injeÃÃo de fluxo
The cardiac troponin T (cTnT) is important specific biomarker in establishing diagnosis and predicting prognosis in patients with suspected acute myocardial infarctions (AMI). In this work, a flow injection system quartz microbalance based on the alteration of electric frequency in response to the antigen-antibody interaction was used for determination of th
Publicado em: 2007
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9. Effects SAM on enzyme immobilization procedures in the peroxidase based biosensor performance / Investigação dos efeitos dos procedimentos de imobilização em monocamadas auto-organizadas da enzima peroidase no desenvolvimento de um biossensor
In this work different immobilization procedures of HRP were investigated using as support mIatrices the self-assembled monolayers formed on gold electrodes, as well as the evaluation of the influence of these immobilization processes in the biosensor performance. For this, the used monolayers were prepared by thiols with different structures, carbon chains
Publicado em: 2006
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10. Desenvolvimento de sensor biomimetico empregando monocamadas auto-organizadas de tiois sobre eletrodos de ouro / Biomimetic sensor development applying thiol self-assembled monolayer on polycrystalline gold electrodes
Esta dissertação descreve o estudo e uso de sistemas auto-organizados como elemento base na modificação de eletrodos de ouro policristalino para a construção de um sensor biomimético. Realizou-se uma comparação e avaliação dos procedimentos mais comuns utilizados no pré tratamento de superfícies de ouro, com o escopo de verificar o efeito das co
Publicado em: 2005
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11. Nanoestruturas e efeitos de tamanho na epitaxia de compostos III-V
In this work we discuss issues related to two different methods to obtain epitaxially grown semiconductor nanostructures. The samples were grown by Chemical Beam Epitaxy (CBE) and characterized by High Resolution Transmission Electron Microscopy (HRTEM), Atomic Force Microscopy (AFM) and Reflection High-Energy Electron Diffraction (RHEED). In the first part
Publicado em: 2001
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12. Covalent attachment of synthetic DNA to self-assembled monolayer films.
The covalent attachment of thiol-modified DNA oligomers; to self-assembled monolayer silane films on fused silica and oxidized silicon substrates is described. A heterobifunctional crosslinking molecule bearing both thiol- and amino-reactive moieties was used to tether a DNA oligomer (modified at its terminus with a thiol group) to an aminosilane film formed