Abstract
This article reports on the synthesis of a novel amphiphilic polyhedral oligomeric silsesquioxane (POSS) end-capped poly(2-(2-methoxyethoxy)ethyl methacrylate)-co-oligo(ethylene glycol) methacrylate) (POSS-P(MEO2MA-co-OEGMA)). These thermoresponsive organic–inorganic hybrid polymers exhibit critical phase transition temperature in water, which can be finely tuned by changing the feed ratio of OEGMA and MEO2MA. The lower critical solution temperature (LCST) of POSS-P(MEO2MA-co-OEGMA) increases from 31 to 59 °C with the increasing of OEGMA content. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) studies show that these polymers can self-assemble into spherical micelles with the thermosensitive block into the corona and the POSS forming the core, and larger aggregates are formed when the temperature values are above their LCSTs. These thermoresponsive polymers POSS-P(MEO2MA-co-OEGMA) with self-assembly behavior and tunable tempetature-responsive property have the potential applications in material science and biotechnology.
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The authors are thankful for the financial supports from the National Natural Science Foundation of China (No. 51273017) and Polymer Chemistry and Physics, Beijing Municipal Education Commission (BMEC, No. XK100100640).
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Li, S., Liu, Y., Ji, S. et al. Synthesis and self-assembly behavior of thermoresponsive poly(oligo(ethylene glycol) methyl ether methacrylate)-POSS with tunable lower critical solution temperature. Colloid Polym Sci 292, 2993–3001 (2014). https://doi.org/10.1007/s00396-014-3262-4
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DOI: https://doi.org/10.1007/s00396-014-3262-4