@article{
 title = {Waterborne polymer nanogels non-covalently crosslinked by multiple hydrogen bond arrays},
 type = {article},
 year = {2013},
 pages = {387-392},
 volume = {4},
 websites = {http://xlink.rsc.org/?DOI=C2PY20615C},
 publisher = {Royal Society of Chemistry},
 id = {f77e7caf-7658-359c-a597-4820563de5ee},
 created = {2024-01-02T14:09:37.999Z},
 file_attached = {false},
 profile_id = {36921318-7a81-32e6-acca-75b835acd8f1},
 group_id = {f2d52f92-0a5a-3712-a53b-a4492da8da5f},
 last_modified = {2024-01-02T14:09:37.999Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {chen2013waterborne},
 source_type = {article},
 private_publication = {false},
 abstract = {Synthetic colloidal hydrogel particles of sub-micron dimensions, often referred to as microgels and/or nanogels, generally consist of water-soluble polymers held together through chemical crosslinking by covalent bonds in order to preserve the distinct colloidal particle identity. Here we demonstrate the synthesis of non-covalently crosslinked nanogel particles in which the crosslinking through covalent bonds is replaced by physical crosslinking induced by strong self-complementary quadruple hydrogen bond interactions. The multiple hydrogen bond (MHB) arrays were introduced in the form of a 2-ureido4[1H]pyrimidinone (UPy) functionalized polyethylene glycol methacrylate (PEGMA) comonomer, which was employed in the synthesis of colloidal nanogels made from N-isopropylacrylamide (NIPAm) or a mixture of 2-(2-methoxyethoxy) ethyl methacrylate and oligo(ethylene glycol) methacrylate (MEO(2)MA-co-OEGMA) following conventional free radical polymerization routes. The temperature-dependent swelling properties of the non-covalently crosslinked nanogels with differences in UPy loadings were studied, clearly demonstrating that MHB arrays can work as crosslinking moieties warranting the colloidal particle identity of the prepared hydrogels.},
 bibtype = {article},
 author = {Chen, Yunhua and Ballard, Nicholas and Bon, Stefan A. F.},
 doi = {10.1039/C2PY20615C},
 journal = {Polym. Chem.},
 number = {2}
}

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