| Download ( PDF | 488kB) Nur für Mitarbeiter des Archivs |
Capacitive Detection in Ultrathin Chemosensors Prepared by Molecularly Imprinted Grafting Photopolymerization
Delaney, Tetyana L., Zimin, Denys, Rahm, Michael, Weiss, Dieter
, Wolfbeis, Otto S.
und Mirsky, Vladimir M.
(2007)
Capacitive Detection in Ultrathin Chemosensors Prepared by Molecularly Imprinted Grafting Photopolymerization.
Analytical Chemistry (including News & Features) 79 (8), S. 3220-3225.
Veröffentlichungsdatum dieses Volltextes: 18 Mrz 2011 07:59
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.20155
Zusammenfassung
The usual applications of capacitive detection in chemo- and biosensors are based on changes in effective thickness of insulating layers due to adsorption of analyte onto receptors. Ultrathin chemosensors based on molecularly imprinted polymerization enable a realization of another capacitive approach that exploits changes in electrical capacitance due to modification of the dielectric constant ...
The usual applications of capacitive detection in chemo- and biosensors are based on changes in effective thickness of insulating layers due to adsorption of analyte onto receptors. Ultrathin chemosensors based on molecularly imprinted polymerization enable a realization of another capacitive approach that exploits changes in electrical capacitance due to modification of the dielectric constant of the polymer. Such chemosensors were prepared by photografted molecularly imprinted polymerization on the surface of gold electrodes. An adsorbed layer of hydrophobic photoinitiator (benzophenone) provided grafted polymerization on the surface of the alkanethiol-modified gold electrode. The chemosensors were characterized by cyclic voltammetry, impedance spectroscopy, and scanning electron and atomic force microscopy. Binding of analyte was detected by measurements of electrical capacitance. The results indicate a decrease of the dielectric constant of the polymer layer due to analyte binding up to 20%.
Alternative Links zum Volltext
Beteiligte Einrichtungen
Details
| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | Analytical Chemistry (including News & Features) | ||||
| Verlag: | AMER CHEMICAL SOC | ||||
|---|---|---|---|---|---|
| Ort der Veröffentlichung: | WASHINGTON | ||||
| Band: | 79 | ||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 8 | ||||
| Seitenbereich: | S. 3220-3225 | ||||
| Datum | 15 März 2007 | ||||
| Institutionen | Physik > Institut für Experimentelle und Angewandte Physik > Lehrstuhl Professor Weiss > Arbeitsgruppe Dieter Weiss Chemie und Pharmazie > Institut für Analytische Chemie, Chemo- und Biosensorik Chemie und Pharmazie > Institut für Physikalische und Theoretische Chemie | ||||
| Identifikationsnummer |
| ||||
| Stichwörter / Keywords | PHARMACEUTICAL ANALYSIS; PROTEIN IMMOBILIZATION; BIOMIMETIC SENSORS; GOLD ELECTRODES; POLYMERS; MONOLAYERS; ADSORPTION | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Unbekannt / Keine Angabe | ||||
| An der Universität Regensburg entstanden | Unbekannt / Keine Angabe | ||||
| Dokumenten-ID | 20155 |
Downloadstatistik
Downloadstatistik