Open AccessAn Optical Steam Sterilization Sensor Based On a Dual-Responsive Supramolecular Cross-Linked Photonic Polymer
Author(s) -
Yari Foelen,
Daniëlle A. C. van der Heijden,
Marc del Pozo,
Johan Lub,
Cees W. M. Bastiaansen,
Albertus P. H. J. Schenning
Publication year - 2020
Publication title -
acs applied materials and interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.535
H-Index - 228
eISSN - 1944-8252
pISSN - 1944-8244
DOI - 10.1021/acsami.0c00711
Subject(s) - materials science , sterilization (economics) , supramolecular chemistry , polymer , optoelectronics , photonics , dual (grammatical number) , supramolecular polymers , nanotechnology , molecule , organic chemistry , composite material , chemistry , art , literature , monetary economics , economics , foreign exchange market , foreign exchange
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.
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