Cation sensing by patterned self-assembled monolayers on gold

S. Flink; Holger Schönherr; Gyula J. Vancso; Frank A.J. Geurts; Kees G.C. Leerdam; F.C.J.M. van Veggel; David Reinhoudt

doi:10.1039/b002606i

Cation sensing by patterned self-assembled monolayers on gold

S. Flink, Holger Schönherr, Gyula J. Vancso, Frank A.J. Geurts, Kees G.C. Leerdam, F.C.J.M. van Veggel, David Reinhoudt

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Abstract

X-Ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) have been used to study the interactions between self-assembled monolayers (SAMs) of crown ether adsorbates and metal ions. Both analytical techniques confirmed the selectivities of the 12-crown-4 and 15-crown-5 SAMs that had previously been determined by electrochemical impedance spectroscopy. AFM has also been used to characterize microcontact-printed crown ether monolayers. The electrochemical patterning of monolayers on gold allowed the design of a dual sensor for the electrochemical detection of cations. However, due to cross-contamination of both monolayers during the patterning process a significant selectivity reduction of the layers was observed. Nevertheless, the remaining Na+ selectivity of the 12-crown-4 SAM and the K+ selectivity of the 15-crown-5 SAM allowed the unambiguous discrimination between both metal ions.

Original language	Undefined
Pages (from-to)	2141-2146
Journal	Journal of the Chemical Society. Perkin transactions II
Volume	2000
Issue number	10
DOIs	https://doi.org/10.1039/b002606i
Publication status	Published - 2000

Keywords

METIS-106320
IR-11753

Access to Document

10.1039/b002606i

Cite this

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title = "Cation sensing by patterned self-assembled monolayers on gold",

abstract = "X-Ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) have been used to study the interactions between self-assembled monolayers (SAMs) of crown ether adsorbates and metal ions. Both analytical techniques confirmed the selectivities of the 12-crown-4 and 15-crown-5 SAMs that had previously been determined by electrochemical impedance spectroscopy. AFM has also been used to characterize microcontact-printed crown ether monolayers. The electrochemical patterning of monolayers on gold allowed the design of a dual sensor for the electrochemical detection of cations. However, due to cross-contamination of both monolayers during the patterning process a significant selectivity reduction of the layers was observed. Nevertheless, the remaining Na+ selectivity of the 12-crown-4 SAM and the K+ selectivity of the 15-crown-5 SAM allowed the unambiguous discrimination between both metal ions.",

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year = "2000",

doi = "10.1039/b002606i",

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pages = "2141--2146",

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TY - JOUR

T1 - Cation sensing by patterned self-assembled monolayers on gold

AU - Flink, S.

AU - Schönherr, Holger

AU - Vancso, Gyula J.

AU - Geurts, Frank A.J.

AU - Leerdam, Kees G.C.

AU - van Veggel, F.C.J.M.

AU - Reinhoudt, David

PY - 2000

Y1 - 2000

N2 - X-Ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) have been used to study the interactions between self-assembled monolayers (SAMs) of crown ether adsorbates and metal ions. Both analytical techniques confirmed the selectivities of the 12-crown-4 and 15-crown-5 SAMs that had previously been determined by electrochemical impedance spectroscopy. AFM has also been used to characterize microcontact-printed crown ether monolayers. The electrochemical patterning of monolayers on gold allowed the design of a dual sensor for the electrochemical detection of cations. However, due to cross-contamination of both monolayers during the patterning process a significant selectivity reduction of the layers was observed. Nevertheless, the remaining Na+ selectivity of the 12-crown-4 SAM and the K+ selectivity of the 15-crown-5 SAM allowed the unambiguous discrimination between both metal ions.

AB - X-Ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) have been used to study the interactions between self-assembled monolayers (SAMs) of crown ether adsorbates and metal ions. Both analytical techniques confirmed the selectivities of the 12-crown-4 and 15-crown-5 SAMs that had previously been determined by electrochemical impedance spectroscopy. AFM has also been used to characterize microcontact-printed crown ether monolayers. The electrochemical patterning of monolayers on gold allowed the design of a dual sensor for the electrochemical detection of cations. However, due to cross-contamination of both monolayers during the patterning process a significant selectivity reduction of the layers was observed. Nevertheless, the remaining Na+ selectivity of the 12-crown-4 SAM and the K+ selectivity of the 15-crown-5 SAM allowed the unambiguous discrimination between both metal ions.

KW - METIS-106320

KW - IR-11753

U2 - 10.1039/b002606i

DO - 10.1039/b002606i

M3 - Article

SN - 0300-9580

VL - 2000

SP - 2141

EP - 2146

JO - Journal of the Chemical Society. Perkin transactions II

JF - Journal of the Chemical Society. Perkin transactions II

IS - 10

ER -