Journal
POLYMER CHEMISTRY
Volume 8, Issue 24, Pages 3679-3688Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7py00736a
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Funding
- Natural Science Foundation of China [21504044]
- Natural Science Foundation of Jiangsu Province [BK20150769]
- Fundamental Research Funds for the Central Universities [30916011203]
- China Postdoctoral Science Foundation [157453]
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In this study, we report on the synthesis of thermoresponsive polymers with different microstructures, a precisely tunable lower critical solution temperature (LCST) and terminal catechol anchors by copper(0) mediated living radical polymerization (Cu(0)-LRP). All the Cu(0)-LRP polymerizations were performed directly from the unprotected dopamine-functionalized initiators at ambient temperature or below in aqueous solution with full or close to full conversion obtained in minutes. The resulting polymers exhibited a designed molecular weight (MW), narrow MW distribution and high end-group fidelity capable of in situ block copolymerization. We demonstrate their application toward the surface modification of titanium dioxide nanoparticles by the successful preparation of smart nanocomposites with a self-flocculation effect. A one-pot strategy was then developed for the simultaneous polymerization and surface modification to simplify the multi-step purification and immobilization processes. The subsequent degradation of Rhodamine B under the irradiation of simulated solar light proved the potential application of hybrid nanocomposites in water treatment and a switching effect of photocatalytic ability below or above the LCST was also observed.
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