Authors Belge, G. ; Beyerlein, D. ; Betsch, C. ; Eichhorn, K.-J. ; Gauglitz, G. ; Grundke, K. ; Voit, B.
Title Suitability of Hyperbranched Polyester for sensoric applications - Investigation with Reflectometric Interference Spectroscopy
Date 28.10.2002
Number 10387
Abstract Hyperbranched polyesters (HBP) with different end groups (P-OH, P-COOH, P-OAc) were prepared as thin films. Their surface properties were investigated using zeta potential and contact angle measurements. The differences in surface properties between P-OH and P-COOH, on the one hand, and P-OAc, on the other hand, predicted different behavior in sensoric applications. Therefore, the vapor of the homologous series of alcohols from methanol to pentanol was exposed to the thin films. Changes in thickness were observed with reflectometric interference spectroscopy (RIfS). First investigations in a current analytical problem for the detection and discrimination of refrigerants (freons) using P-OH as sensitive layer have been shown. Polydimethylsiloxane (PDMS) and poly(ether urethane) (PUT) were used as reference sensor materials for the RIfS measurements.
Publisher Analytical and Bioanalytical Chemistry
Wikidata Q44174791
Citation Analytical and Bioanalytical Chemistry 374 (2002) 403-411
Tags optical sensor hyperbranched polymers voc refrigerants one-step synthesis polymers functionalization monolayers films

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