![]() This article in other publications, without requesting further permission from the RSC, Popp,Ĭreative Commons Attribution-NonCommercial 3.0 Unported Licence. Molecular in situ monitoring of pH-triggered response in adaptive polymers by two-dimensional Raman micro-correlation-spectroscopy ![]() Due to the label-free and non-invasive approach, it is furthermore possible to combine this method with the investigation of macroscopic properties revealing the answer of the polymer to the external stimulus on both, the molecular and the macroscopic level Combined with two-dimensional correlation analysis (2DCOS), this method reveals the stimuli-response on a molecular level and determines the sequence of changes and the diffusion rate inside the polymer. Hereby, the response behavior of the reversible polymer is studied in situ with molecular sensitivity and spatial as well as tem¬po¬ral resolution utilizing Raman micro-spectroscopy. Here, we present a straightforward way to investigate the progressing trigger, the change of the chemical composition of the polymer and the macroscopic properties simultaneously. To tune the properties of stimuli-responsive poly-mers, a detailed understanding of the relationship between the applied stimulus and chan-ges in molecular structure as well as the relationship between latter and macroscopic properties is required, which until now requires laborious methods. Such behavior is offering unique advantages in applications where adaptive materials are needed. Stimuli-responsive polymers can switch specific physical properties in response to a change of the environmental conditions.
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