Imparting chemical specificity to nanometer-spaced electrodes

Andrea Alessandrini, Lorenzo Berti, Gian Carlo Gazzadi, Paolo Facci

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper we are demonstrating an electrochemically driven self-assembling approach to achieve the space-resolved chemical functionalization of nanoelectrodes. After forming a self-assembled monolayer of electroactive quinones on a pair of nano-spaced (<100 nm) electrodes, we enabled the binding of ssDNA exclusively on a single nanoelectrode by controlling the oxidation state at each modified electrode. This procedure attained the chemical differentiation of otherwise identical nanoelectrodes as the immobilized ssDNA retained its hybridization ability. Furthermore, we established that Kelvin probe force microscopy is a suitable space-resolved analytical technique for detecting this chemical functionalization at the nanoscale. The reported approach, enabling the space-selective patterning of (bio)molecules on nanoelectrode surfaces, can find application in complex nanosensor structure and molecular electronics implementations.

Original languageEnglish (US)
Article number355303
JournalNanotechnology
Volume19
Issue number35
DOIs
StatePublished - Sep 3 2008
Externally publishedYes

Fingerprint

Nanosensors
Molecular electronics
Quinones
Electrodes
Self assembled monolayers
Microscopic examination
Oxidation
Molecules

ASJC Scopus subject areas

  • Materials Science(all)
  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Alessandrini, A., Berti, L., Gazzadi, G. C., & Facci, P. (2008). Imparting chemical specificity to nanometer-spaced electrodes. Nanotechnology, 19(35), [355303]. https://doi.org/10.1088/0957-4484/19/35/355303

Imparting chemical specificity to nanometer-spaced electrodes. / Alessandrini, Andrea; Berti, Lorenzo; Gazzadi, Gian Carlo; Facci, Paolo.

In: Nanotechnology, Vol. 19, No. 35, 355303, 03.09.2008.

Research output: Contribution to journalArticle

Alessandrini, A, Berti, L, Gazzadi, GC & Facci, P 2008, 'Imparting chemical specificity to nanometer-spaced electrodes', Nanotechnology, vol. 19, no. 35, 355303. https://doi.org/10.1088/0957-4484/19/35/355303
Alessandrini, Andrea ; Berti, Lorenzo ; Gazzadi, Gian Carlo ; Facci, Paolo. / Imparting chemical specificity to nanometer-spaced electrodes. In: Nanotechnology. 2008 ; Vol. 19, No. 35.
@article{2d60b9d5e9484bb9b4aadcef88bccdee,
title = "Imparting chemical specificity to nanometer-spaced electrodes",
abstract = "In this paper we are demonstrating an electrochemically driven self-assembling approach to achieve the space-resolved chemical functionalization of nanoelectrodes. After forming a self-assembled monolayer of electroactive quinones on a pair of nano-spaced (<100 nm) electrodes, we enabled the binding of ssDNA exclusively on a single nanoelectrode by controlling the oxidation state at each modified electrode. This procedure attained the chemical differentiation of otherwise identical nanoelectrodes as the immobilized ssDNA retained its hybridization ability. Furthermore, we established that Kelvin probe force microscopy is a suitable space-resolved analytical technique for detecting this chemical functionalization at the nanoscale. The reported approach, enabling the space-selective patterning of (bio)molecules on nanoelectrode surfaces, can find application in complex nanosensor structure and molecular electronics implementations.",
author = "Andrea Alessandrini and Lorenzo Berti and Gazzadi, {Gian Carlo} and Paolo Facci",
year = "2008",
month = "9",
day = "3",
doi = "10.1088/0957-4484/19/35/355303",
language = "English (US)",
volume = "19",
journal = "Nanotechnology",
issn = "0957-4484",
publisher = "IOP Publishing Ltd.",
number = "35",

}

TY - JOUR

T1 - Imparting chemical specificity to nanometer-spaced electrodes

AU - Alessandrini, Andrea

AU - Berti, Lorenzo

AU - Gazzadi, Gian Carlo

AU - Facci, Paolo

PY - 2008/9/3

Y1 - 2008/9/3

N2 - In this paper we are demonstrating an electrochemically driven self-assembling approach to achieve the space-resolved chemical functionalization of nanoelectrodes. After forming a self-assembled monolayer of electroactive quinones on a pair of nano-spaced (<100 nm) electrodes, we enabled the binding of ssDNA exclusively on a single nanoelectrode by controlling the oxidation state at each modified electrode. This procedure attained the chemical differentiation of otherwise identical nanoelectrodes as the immobilized ssDNA retained its hybridization ability. Furthermore, we established that Kelvin probe force microscopy is a suitable space-resolved analytical technique for detecting this chemical functionalization at the nanoscale. The reported approach, enabling the space-selective patterning of (bio)molecules on nanoelectrode surfaces, can find application in complex nanosensor structure and molecular electronics implementations.

AB - In this paper we are demonstrating an electrochemically driven self-assembling approach to achieve the space-resolved chemical functionalization of nanoelectrodes. After forming a self-assembled monolayer of electroactive quinones on a pair of nano-spaced (<100 nm) electrodes, we enabled the binding of ssDNA exclusively on a single nanoelectrode by controlling the oxidation state at each modified electrode. This procedure attained the chemical differentiation of otherwise identical nanoelectrodes as the immobilized ssDNA retained its hybridization ability. Furthermore, we established that Kelvin probe force microscopy is a suitable space-resolved analytical technique for detecting this chemical functionalization at the nanoscale. The reported approach, enabling the space-selective patterning of (bio)molecules on nanoelectrode surfaces, can find application in complex nanosensor structure and molecular electronics implementations.

UR - http://www.scopus.com/inward/record.url?scp=48249114803&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=48249114803&partnerID=8YFLogxK

U2 - 10.1088/0957-4484/19/35/355303

DO - 10.1088/0957-4484/19/35/355303

M3 - Article

C2 - 21828843

AN - SCOPUS:48249114803

VL - 19

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 35

M1 - 355303

ER -