Ultrasensitive microchip sensor based on boron-containing polyfluorene nanofilms

Celso Ribeiro; Vasco Bonifácio; Guilherme António Rodrigues Lavareda; Carlos Alberto Nunes de Carvalho

doi:10.1016/j.bios.2010.08.077

Ultrasensitive microchip sensor based on boron-containing polyfluorene nanofilms

Celso Ribeiro, Vasco Bonifácio, Guilherme António Rodrigues Lavareda, Carlos Alberto Nunes de Carvalho

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

A fluorene-based pi-conjugated copolymer with on-chain dibenzoborole units was used in the development of a nanocoated gold interdigitated microelectrode array device which successfully detects fluoride in a broad range of concentrations (10(-11)-10(-4) M) in aqueous solution, upon impedance spectroscopy measurements. A calibration curve obtained over this range of concentrations and a new analytical method based on impedance spectroscopy measurements in aqueous solution is proposed. The sensor nanofilm was produced by spin-coating and diagnosed via spectroscopic ellipsometry, AFM, and electrically conductivity techniques. Changes in the conductivity due to the boron-fluoride complex formation seem to be the major mechanism behind the dependence of impedimetric results on the fluoride concentration. (C) 2010 Elsevier B.V. All rights reserved.

Original language	Unknown
Pages (from-to)	1662-1665
Journal	Biosensors & Bioelectronics
Volume	26
Issue number	4
DOIs	https://doi.org/10.1016/j.bios.2010.08.077
Publication status	Published - 1 Jan 2010

Access to Document

10.1016/j.bios.2010.08.077

Cite this

@article{310d0d081910439a8ddf969c895a0f7c,

title = "Ultrasensitive microchip sensor based on boron-containing polyfluorene nanofilms",

abstract = "A fluorene-based pi-conjugated copolymer with on-chain dibenzoborole units was used in the development of a nanocoated gold interdigitated microelectrode array device which successfully detects fluoride in a broad range of concentrations (10(-11)-10(-4) M) in aqueous solution, upon impedance spectroscopy measurements. A calibration curve obtained over this range of concentrations and a new analytical method based on impedance spectroscopy measurements in aqueous solution is proposed. The sensor nanofilm was produced by spin-coating and diagnosed via spectroscopic ellipsometry, AFM, and electrically conductivity techniques. Changes in the conductivity due to the boron-fluoride complex formation seem to be the major mechanism behind the dependence of impedimetric results on the fluoride concentration. (C) 2010 Elsevier B.V. All rights reserved.",

keywords = "detection, electrodes, Polymer, electrical, impedance, Interdigitated, Ellipsometry, Fluoride, conductivity, spectroscopy, array, Conjugated, polymers, Impedance",

author = "Celso Ribeiro and Vasco Bonif{\'a}cio and Lavareda, \{Guilherme Ant{\'o}nio Rodrigues\} and Carvalho, \{Carlos Alberto Nunes de\}",

year = "2010",

month = jan,

day = "1",

doi = "10.1016/j.bios.2010.08.077",

language = "Unknown",

volume = "26",

pages = "1662--1665",

journal = "Biosensors \& Bioelectronics",

issn = "0956-5663",

publisher = "Elsevier",

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TY - JOUR

T1 - Ultrasensitive microchip sensor based on boron-containing polyfluorene nanofilms

AU - Ribeiro, Celso

AU - Bonifácio, Vasco

AU - Lavareda, Guilherme António Rodrigues

AU - Carvalho, Carlos Alberto Nunes de

PY - 2010/1/1

Y1 - 2010/1/1

N2 - A fluorene-based pi-conjugated copolymer with on-chain dibenzoborole units was used in the development of a nanocoated gold interdigitated microelectrode array device which successfully detects fluoride in a broad range of concentrations (10(-11)-10(-4) M) in aqueous solution, upon impedance spectroscopy measurements. A calibration curve obtained over this range of concentrations and a new analytical method based on impedance spectroscopy measurements in aqueous solution is proposed. The sensor nanofilm was produced by spin-coating and diagnosed via spectroscopic ellipsometry, AFM, and electrically conductivity techniques. Changes in the conductivity due to the boron-fluoride complex formation seem to be the major mechanism behind the dependence of impedimetric results on the fluoride concentration. (C) 2010 Elsevier B.V. All rights reserved.

AB - A fluorene-based pi-conjugated copolymer with on-chain dibenzoborole units was used in the development of a nanocoated gold interdigitated microelectrode array device which successfully detects fluoride in a broad range of concentrations (10(-11)-10(-4) M) in aqueous solution, upon impedance spectroscopy measurements. A calibration curve obtained over this range of concentrations and a new analytical method based on impedance spectroscopy measurements in aqueous solution is proposed. The sensor nanofilm was produced by spin-coating and diagnosed via spectroscopic ellipsometry, AFM, and electrically conductivity techniques. Changes in the conductivity due to the boron-fluoride complex formation seem to be the major mechanism behind the dependence of impedimetric results on the fluoride concentration. (C) 2010 Elsevier B.V. All rights reserved.

KW - detection

KW - electrodes

KW - Polymer

KW - electrical

KW - impedance

KW - Interdigitated

KW - Ellipsometry

KW - Fluoride

KW - conductivity

KW - spectroscopy

KW - array

KW - Conjugated

KW - polymers

KW - Impedance

U2 - 10.1016/j.bios.2010.08.077

DO - 10.1016/j.bios.2010.08.077

M3 - Article

C2 - 20943367

SN - 0956-5663

VL - 26

SP - 1662

EP - 1665

JO - Biosensors & Bioelectronics

JF - Biosensors & Bioelectronics

IS - 4

ER -