Dynamics in Stimuli-Responsive Poly(N-isopropylacrylamide) Hydrogel Layers As Revealed by Fluorescence Correlation Spectroscopy
We employ fluorescence correlation spectroscopy (FCS) to study the translational mobility of
molecular tracers in stimuli-responsive grafted poly (N-isopropylacrylamide)(PNiPAAm)
hydrogels, under variable solvency conditions. Tracer–matrix interactions were tuned by
selecting three different molecular tracers. In contrast to a noninteracting tracer (Alexa 647),
the mobility of a weakly (Alexa 488) and a strongly interacting (Rhodamine 6G) tracer
deviates from a simple single Fickian diffusion. In addition to pure crowding effects, the …
molecular tracers in stimuli-responsive grafted poly (N-isopropylacrylamide)(PNiPAAm)
hydrogels, under variable solvency conditions. Tracer–matrix interactions were tuned by
selecting three different molecular tracers. In contrast to a noninteracting tracer (Alexa 647),
the mobility of a weakly (Alexa 488) and a strongly interacting (Rhodamine 6G) tracer
deviates from a simple single Fickian diffusion. In addition to pure crowding effects, the …
[引用][C] Dynamics in Stimuli-Responsive Poly (N-isopropylacrylamide) Hydrogel Layers As Revealed by Fluorescence Correlation Spectroscopy
V Apostolos, K Peter, K Kaloian, H Christian… - 2014
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