Observing Phase Transition of a Temperature-Responsive Polymer Using Electrochemical Collisions on an Ultramicroelectrode

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Herein, a study on a new lower critical solution temperature (LCST) polymer in an organic solvent by an electrochemical technique has been reported. The phase-transition behavior of poly(arylene ether sulfone) (PAES) was examined on 1,2-dimethoxyethane (DME). At a temperature above the LCST point, polymer molecules aggregated to create polymer droplets. These droplets subsequently collided with an ultramicroelectrode (UME), resulting in a new form of staircase current decrease. The experimental collision frequency and collision signal were analyzed in relation to the concentration of the polymer. In addition, the degree of polymer aggregation associated with temperature change was also observed.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

THERMORESPONSIVE POLYMERS; SILVER NANOPARTICLES; BEHAVIOR; COPOLYMERS; VESICLES; SUBSTITUTION; DROPLET; RELEASE; ETHERS); SMART

Citation

ANALYTICAL CHEMISTRY, v.90, no.12, pp.7261 - 7266

ISSN
0003-2700
DOI
10.1021/acs.analchem.8b00437
URI
http://hdl.handle.net/10203/244303
Appears in Collection
NT-Journal Papers(저널논문)CH-Journal Papers(저널논문)
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