Suitability of hyperbranched polyester for sensoric applications - investigation with reflectometric interference spectroscopy

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.

Phenolic Hyperbranched Polymers as Additives in Cationic Photopolymerization of Epoxy Systems

“…The use of hyperbranched polymers was also reported in sensorics,8,9 as non linear optic material,10 in molecular imprinting11 and also soluble functional supports 12. We can also recall their use as processing‐promoting agents,13 toughening14 and reinforcing agents 15.…”

Synthesis and characterization of fully biobased polyesters with tunable branched architectures

“…35 In this context along with the relatively good availability of suitable building blocks derived from renewable resources, particular interest has been devoted to access biobased branched-type polyesters. 34,[36][37][38][39][40][41][42][43] Such interest is expected to further increase under the developments currently made in the production of building blocks that will bring forth new entirely biomass-derived monomers (triols, and diacids) through optimized processes. 44 This is due to the attractive features that can be easily tuned by controlling their functionality from hydroxyl to carboxylic end groups leading to very distinct properties and thus multiple uses.…”

Functionalization of solid surfaces with hyperbranched polyesters to control protein adsorption

“…Dermody et al [21] presented a polymeric filter for electrochemical sensors based on chemically grafted poly(acrylic acid) films with incorporated beta-cyclodextrin receptors. Differently terminated aromatic hyperbranched polyesters were applied as moisture sensors [18], sensor for volatile organic compounds [22,23], and nerve agents as well as explosive simulating compounds [24]. Promising applications were found in the field of biosensors.…”