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Polymers 2016, 8(10), 365; doi:10.3390/polym8100365

Multiresponsive Behavior of Functional Poly(p-phenylene vinylene)s in Water

1
Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, Krijgslaan 281 S4, Ghent B-9000, Belgium
2
Polymer Electronics Research Center, School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand
3
MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
4
Key Laboratory of Polarized Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, China
5
Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, Shanxi, China
*
Author to whom correspondence should be addressed.
Academic Editors: Alexander Böker and Frank Wiesbrock
Received: 18 August 2016 / Revised: 29 September 2016 / Accepted: 10 October 2016 / Published: 18 October 2016
(This article belongs to the Special Issue Young Talents in Polymer Science)
View Full-Text   |   Download PDF [2107 KB, uploaded 18 October 2016]   |  

Abstract

The multiresponsive behavior of functionalized water-soluble conjugated polymers (CPs) is presented with potential applications for sensors. In this study, we investigated the aqueous solubility behavior of water-soluble CPs with high photoluminescence and with a particular focus on their pH and temperature responsiveness. For this purpose, two poly(phenylene vinylene)s (PPVs)—namely 2,5-substituted PPVs bearing both carboxylic acid and methoxyoligoethylene glycol units—were investigated, with different amount of carboxylic acid units. Changes in the pH and temperature of polymer solutions led to a response in the fluorescence intensity in a pH range from 3 to 10 and for temperatures ranging from 10 to 85 °C. Additionally, it is demonstrated that the polymer with the largest number of carboxylic acid groups displays upper critical solution temperature (UCST)-like thermoresponsive behavior in the presence of a divalent ion like Ca2+. The sensing capability of these water-soluble PPVs could be utilized to design smart materials with multiresponsive behavior in biomedicine and soft materials. View Full-Text
Keywords: polymeric sensor; water-soluble conjugated polymer; fluorescent sensor; reversible calcium binding; thermoresponsive polymer; upper critical solution temperature polymeric sensor; water-soluble conjugated polymer; fluorescent sensor; reversible calcium binding; thermoresponsive polymer; upper critical solution temperature
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Ryskulova, K.; Rao Gulur Srinivas, A.; Kerr-Phillips, T.; Peng, H.; Barker, D.; Travas-Sejdic, J.; Hoogenboom, R. Multiresponsive Behavior of Functional Poly(p-phenylene vinylene)s in Water. Polymers 2016, 8, 365.

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