Dynamics in Stimuli-Responsive Poly( N - isopropylacrylamide) Hydrogel Layers As Revealed by Fluorescence Correlation Spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10227324" target="_blank" >RIV/00216208:11310/14:10227324 - isvavai.cz</a>
Result on the web
<a href="http://pubs.acs.org/doi/pdf/10.1021/ma500928p" target="_blank" >http://pubs.acs.org/doi/pdf/10.1021/ma500928p</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/ma500928p" target="_blank" >10.1021/ma500928p</a>
Alternative languages
Result language
angličtina
Original language name
Dynamics in Stimuli-Responsive Poly( N - isopropylacrylamide) Hydrogel Layers As Revealed by Fluorescence Correlation Spectroscopy
Original language description
We employ fl uorescence correlation spectros- copy (FCS) to study the translational mobility of molecular tracers in stimuli-responsive grafted poly( N -isopropylacryla- mide)(PNiPAAm)hydrogels,undervariablesolvency conditions. Tracer MINUS SIGN matrix interactions were tuned by selecting three di ff erent molecular tracers. In contrast to a non- interacting tracer (Alexa 647), the mobility of a weakly (Alexa 488) and a strongly interacting (Rhodamine 6G) tracer deviates from a simple single Fickian diff usion. In addition to pure crowding e ff ects, the mobility of both Alexa488 and Rhodamine 6G is in fl uenced by tracer MINUS SIGN polymer interactions. We interpret the observed trends in tracer mobility in terms of the interplay between Coulombic repulsions and short-range attractions. Although tracer dynamics and hydrogel swelling ratio are interdependent properties, their relation turns out to be nontrivial and does not allow predictions of tracer dynamics on the basis of polymer
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LK21302" target="_blank" >LK21302: Interactions and dynamics in polymer nanostructures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Macromolecules
ISSN
0024-9297
e-ISSN
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Volume of the periodical
47
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
5303-5312
UT code for WoS article
000340350400050
EID of the result in the Scopus database
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