Layer-by-layer nanostructured films for electrochemical sensors fabrication

2022 ◽  
pp. 407-441
Author(s):  
Celina M. Miyazaki ◽  
Flavio M. Shimizu ◽  
Marystela Ferreira
Keyword(s):  
Electrochemical Sensors ◽  
Layer By Layer ◽  
Nanostructured Films

Surface Imprinting in Layer-by-Layer Nanostructured Films

2007 ◽  
Vol 17 (11) ◽  
pp. 1821-1827 ◽  
Author(s):  
F. Shi ◽  
Z. Liu ◽  
G.-L. Wu ◽  
M. Zhang ◽  
H. Chen ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Surface Imprinting ◽  
Nanostructured Films

scholarly journals Development of a Novel Biosensor Using Cationic Antimicrobial Peptide and Nickel Phthalocyanine Ultrathin Films for Electrochemical Detection of Dopamine

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Maysa F. Zampa ◽  
Inês Maria de S. Araújo ◽  
José Ribeiro dos Santos Júnior ◽  
Valtencir Zucolotto ◽  
José Roberto de S. A. Leite ◽  
...  
Keyword(s):  
Antimicrobial Peptide ◽  
Electrochemical Sensors ◽  
Biological Fluids ◽  
Fundamental Aspect ◽  
Layer By Layer ◽  
Cationic Antimicrobial Peptide ◽  
Nickel Phthalocyanine ◽  
Layer Technique ◽  
Potential Applications ◽  
Pharmaceutical Industries

The antimicrobial peptide dermaseptin 01 (DS 01), from the skin secretion ofPhyllomedusa hypochondrialisfrogs, was immobilized in nanostructured layered films in conjunction with nickel tetrasulfonated phthalocyanines (NiTsPc), widely used in electronic devices, using layer-by-layer technique. The films were used as a biosensor to detect the presence of dopamine (DA), a neurotransmitter associated with diseases such as Alzheimer's and Parkinson's, with detection limits in the order of 10−6 mol L−1. The use of DS 01 in LbL film generated selectivity in the detection of DA despite the presence of ascorbic acid found in biological fluids. This work is the first to report that the antimicrobial peptide and NiTsPc LbL film exhibits electroanalytical activity to DA oxidation. The selectivity in the detection of DA is a fundamental aspect for the development of electrochemical sensors with potential applications in the biomedical and pharmaceutical industries.

scholarly journals Nanoporous hybrid CuO/ZnO/carbon papers used as ultrasensitive non-enzymatic electrochemical sensors

RSC Advances ◽  
2019 ◽  
Vol 9 (71) ◽  
pp. 41886-41892
Author(s):  
Minwei Zhang ◽  
Wenrui Zhang ◽  
Fei Chen ◽  
Chengyi Hou ◽  
Arnab Halder ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensors ◽  
Carbon Paper ◽  
Layer By Layer ◽  
Sacrificial Template ◽  
Graphene Oxide Paper

In this research, we demonstrate a facile approach for the synthesis of a graphite-analogous layer-by-layer heterostructured CuO/ZnO/carbon paper using a graphene oxide paper as a sacrificial template.

scholarly journals Electronic Tongue Based on Nanostructured Hybrid Films of Gold Nanoparticles and Phthalocyanines for Milk Analysis

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Luiza A. Mercante ◽  
Vanessa P. Scagion ◽  
Adriana Pavinatto ◽  
Rafaela C. Sanfelice ◽  
Luiz H. C. Mattoso ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Chemical Sensors ◽  
Film Growth ◽  
Electronic Tongue ◽  
Principal Component ◽  
Inorganic Materials ◽  
Milk Analysis ◽  
Layer By Layer ◽  
Nanostructured Films ◽  
Lbl Films

The use of gold nanoparticles combined with other organic and inorganic materials for designing nanostructured films has demonstrated their versatility for various applications, including optoelectronic devices and chemical sensors. In this study, we reported the synthesis and characterization of gold nanoparticles stabilized with poly(allylamine hydrochloride) (Au@PAH NPs), as well as the capability of this material to form multilayer Layer-by-Layer (LbL) nanostructured films with metal tetrasulfonated phthalocyanines (MTsPc). Film growth was monitored by UV-Vis absorption spectroscopy, atomic force microscopy (AFM), and Fourier transform infrared spectroscopy (FTIR). Once LbL films have been applied as active layers in chemical sensors, Au@PAH/MTsPc and PAH/MTsPc LbL films were used in an electronic tongue system for milk analysis regarding fat content. The capacitance data were treated using Principal Component Analysis (PCA), revealing the role played by the gold nanoparticles on the LbL films electrical properties, enabling this kind of system to be used for analyzing complex matrices such as milk without any prior pretreatment.

Terbiumpolyoxotungstate Anions as Building Units to Fabricate Nanostructured Films

2006 ◽  
Vol 514-516 ◽  
pp. 1135-1139 ◽  
Author(s):  
Filipa L. Sousa ◽  
Paula C.R. Soares-Santos ◽  
Helena I.S. Nogueira ◽  
Rute A. Sá Ferreira ◽  
Ana M.V. Cavaleiro ◽  
...  
Keyword(s):  
Optical Properties ◽  
Comparative Study ◽  
Layer By Layer ◽  
Multilayered Films ◽  
Nanostructured Films ◽  
Assembly Method ◽  
Layer By Layer Assembly ◽  
Different Types ◽  
Allylamine Hydrochloride ◽  
Layer Assembly

A layer-by-layer assembly method was employed to fabricate multilayered films containing the terbium heteropolyanions K6[Tb(BW11O39)(H2O)3]·32H2O and Ky[Tb(XW11O39)2]·nH2O (X = Si and P) and the polyelectrolytes poly(4-styrenesulfonate) and poly(allylamine hydrochloride). A comparative study on the optical properties of the films containing distinct polyoxometalates and different types of multilayers was carried out. The photoluminescence of the solid polyoxometalates and of the resulting films was investigated.

scholarly journals Electrochemical sensors based on carbon nanotubes and their use in biomedical research.Part 2: sensors manufactured by dispersion of carbon nanotubes by means of polyethyleneimine, organic dyes, cyclodextrins, chitosan, proteins, room-temperature ionic liquids, gels, and thiols. Sensors manufactured by dispersion of carbon nanotubes by electropolymerization process. sensors manufactured by dispersion of carbon nanotubes by layer-by-layer deposition

2012 ◽  
Vol 58 (2) ◽  
pp. 144-159 ◽  
Author(s):  
V.A. Buzanovskii
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Electrochemical Sensors ◽  
Organic Dyes ◽  
General Information ◽  
Room Temperature Ionic Liquids ◽  
Layer By Layer ◽  
Layer Deposition ◽  
Manufacturing Techniques

Electrochemical sensors based on carbon nanotubes are widely distributed in biomedical researches. One group of these sensors contains the sensors manufactured by dispersion of carbon nanotubes on an electrode surface by means of polyethyleneimine, organic dyes, cyclodextrins, chitosan, proteins, room-temperature ionic liquids, gels, thiols, by electropolymerization process, and by layer-by-layer deposition. The development directions of such sensors are analyzed. The general information on manufacturing techniques of these sensors is submitted. The opportunities of these sensors for carrying out biomedical researches are demonstrated.

Uric Acid Sensor Based on PEDOT:PSS Modified Screen-Printed Carbon Electrode Fabricated with a Simple Painting Technique

2021 ◽  
Vol 24 (2) ◽  
pp. 43-50
Author(s):  
Wulan Tri Wahyuni ◽  
Rudi Heryanto ◽  
Eti Rohaeti ◽  
Achmad Fauzi ◽  
Budi Riza Putra
Keyword(s):  
Uric Acid ◽  
Electrochemical Sensors ◽  
Limit Of Detection ◽  
Electrochemical Measurement ◽  
Differential Pulse ◽  
Carbon Electrode ◽  
Layer By Layer ◽  
Screen Printed Carbon Electrode ◽  
Limit Of Quantitation ◽  
Screen Printed

A screen-printed carbon electrode is a suitable electrode for electrochemical sensors due to its simplicity and portability. This study aimed to fabricate a screen-printed carbon electrode modified with poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (SPCE-PEDOT:PSS) to improve the electrochemical performance for uric acid detection. The SPCE was fabricated using a layer-by-layer painting process of conductive ink consisting of graphite as a conductive material, polystyrene as a polymeric binder, and dichloromethane solvent on a polyvinyl chloride paper substrate. The fabricated SPCE was then modified with PEDOT:PSS by a drop-casting method. The characterization of SPCE-PEDOT:PSS surface morphology was performed using the scanning electron microscopy technique. The SPCE-PEDOT:PSS provided an acceptable linearity (R2 = 0.9985, 0.9993, 0.9985), sensitivity (0.070, 0.015, 0.024 µA/µM), precision (%RSD = 2.70%, 2.89%, 2.40%), limit of detection (1.61 µM, 1.14 µM, 1.62 µM), and limit of quantitation (5.37 µM, 3.81 µM to 5.39 µM) in measurement of uric acid standard solution using cyclic voltammetry, amperometry, and differential pulse voltammetry techniques, respectively. The studies using SPCE-PEDOT:PSS indicated that the electrode could be applied in the electrochemical measurement of uric acid in the human urine sample.

Layer-by-Layer films based on biopolymers extracted from red seaweeds and polyaniline for applications in electrochemical sensors of chromium VI

2015 ◽  
Vol 200 ◽  
pp. 9-21 ◽  
Author(s):  
Emanuel Airton de Oliveira Farias ◽  
Marianne Corrêa dos Santos ◽  
Natália de Araujo Dionísio ◽  
Patrick V. Quelemes ◽  
José Roberto de Souza Almeida Leite ◽  
...  
Keyword(s):  
Electrochemical Sensors ◽  
Layer By Layer ◽  
Red Seaweeds ◽  
Chromium Vi

Fabrication of Graphene-Based Nanostructured Thin Films with Mid-Infrared Photoresponse Properties

2014 ◽  
Vol 13 (05n06) ◽  
pp. 1460008 ◽  
Author(s):  
Jiayi Zhu ◽  
Lin Zhang ◽  
Weidong Wu ◽  
Yang Cao ◽  
Junhui He
Keyword(s):  
Layer By Layer ◽  
Hybrid Films ◽  
Nanostructured Films ◽  
Mid Infrared ◽  
New Approach ◽  
Conductive Films ◽  
Lbl Assembly ◽  
Reduced Graphene ◽  
Metal Oxide Nanomaterials ◽  
Oppositely Charged

Graphene shows great potential as an advanced building block for fabricating varied graphene based nanostructured films together with other metal and metal oxide nanomaterials. In the current work, a new approach was developed to fabricate flexible, transparent conductive films via layer-by-layer (LbL) assembly of oppositely charged reduced graphene oxide (RGO) nanosheets. We further fabricated transparent conductive hybrid films via LbL assembly of oppositely charged RGO nanosheet and platinum ( Pt ) nanoparticle as well as silica ( SiO 2) nanoparticle. It was found that the graphene based nanostructured films showed different mid-infrared photoresponse properties. Moreover, the photoresponse performance could be manipulated by the power and distance between two electrodes.

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