An optical steam sterilization sensor based on a dual-responsive supramolecular cross-linked photonic polymer

Yari Foelen, Danielle A.C. van der Heijden, Marc del Pozo Puig, Johan Lub, Cees W.M. Bastiaansen, Albert P.H.J. Schenning (Corresponding author)

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An optical time–temperature steam sensor is presented based on the loss of structural color in a supramolecularly cross-linked cholesteric liquid crystal photonic coating. A gradual decrease in the selective reflection band is observed upon exposure to temperatures above 105 °C related to the cholesteric to isotropic transition temperature. The linear polymers with carboxylic acid side chains provide physical cross-linking through hydrogen bonding that allows a time–temperature-dependent order loss through the dynamic equilibrium between supramolecular dimer and free monomer states. Steam is accelerating the color loss, and autoclave experiments show that the photonic supramolecular polymer is applicable as a steam sterilization sensor for medical applications.
Originele taal-2Engels
Pagina's (van-tot)16896-16902
Aantal pagina's7
TijdschriftACS Applied Materials & Interfaces
Volume12
Nummer van het tijdschrift14
DOI's
StatusGepubliceerd - 8 apr 2020

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