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Prodromidis, Mamas I. ; Hirsch, Thomas ; Mirsky, Vladimir M. ; Wolfbeis, Otto S.

Enantioselective Artificial Receptors Formed by the Spreader-Bar Technique

Prodromidis, Mamas I. , Hirsch, Thomas , Mirsky, Vladimir M. und Wolfbeis, Otto S. (2003) Enantioselective Artificial Receptors Formed by the Spreader-Bar Technique. Electroanalysis 15 (22), S. 1795-1798.

Veröffentlichungsdatum dieses Volltextes: 13 Mai 2011 08:04
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.20729


Zusammenfassung

Chiroselective binding sites have been created on thin gold films by application of the spreader-bar approach. Impedometric techniques and surface plasmon resonance were applied to detect binding. (R)-(+)-1,1'-Binaphthyl-2,2'-diol (R-BNOH) and (S)-(-)-1,1'-binaphthyl-2,2'-diol (S-BNOH) were used as model analytes. The artificial receptors were prepared by co-adsorption of 16-mercaptohexadecane ...

Chiroselective binding sites have been created on thin gold films by application of the spreader-bar approach. Impedometric techniques and surface plasmon resonance were applied to detect binding. (R)-(+)-1,1'-Binaphthyl-2,2'-diol (R-BNOH) and (S)-(-)-1,1'-binaphthyl-2,2'-diol (S-BNOH) were used as model analytes. The artificial receptors were prepared by co-adsorption of 16-mercaptohexadecane (matrix) with a thiol-modified chiral selector (template). The conjugates of D,L-thioctic acid and (R)-(+)- or (S)-(-)-1,1'-binaphthyl-2,2'-diamine were used as templates. Different concentration ratios of the matrix and template were tested. No chiral selectivity of surfaces formed by either the matrix or the template alone was observed. The use of alkylthiols shorter than 16-mercaptohexadecane led to the formation of surfaces with no chiral selectivity. The gold electrodes coated by the spreader-bar technique displayed an enantioselectivity of up to 4.76 or up to 2.55 as measured by the capacitive and SPR methods, respectively.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftElectroanalysis
Verlag:WILEY-V C H VERLAG GMBH
Ort der Veröffentlichung:WEINHEIM
Band:15
Nummer des Zeitschriftenheftes oder des Kapitels:22
Seitenbereich:S. 1795-1798
Datum2003
InstitutionenChemie und Pharmazie > Institut für Analytische Chemie, Chemo- und Biosensorik
Identifikationsnummer
WertTyp
10.1002/elan.200302756DOI
Stichwörter / KeywordsCHIRAL DISCRIMINATION; GOLD ELECTRODES; ADSORPTION; enantioselective artificial receptors; spreader-bar technique; capacitive chemosensor; surface plasmon resonance
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 540 Chemie
StatusVeröffentlicht
BegutachtetUnbekannt / Keine Angabe
An der Universität Regensburg entstandenUnbekannt / Keine Angabe
Dokumenten-ID20729

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