期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 217, 期 3, 页码 501-508出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201500355
关键词
alternating radical copolymerization; fluorescent nanoparticles; single-chain nanoparticles
资金
- Army Research Office [W911NF-14-1-0177]
- Army Educational Outreach Program's Undergraduate Research Apprenticeship Program
- New Hampshire Space Grant Consortium
- NASA [NNX10AL97H]
- NASA [NNX10AL97H, 128772] Funding Source: Federal RePORTER
The synthesis of single-chain nanoparticles (SCNP) via the intrachain radical homopolymerization and alternating copolymerization of pendant styrene or stilbene units is reported. In the presence of a radical initiator, styrene-functionalized polymers undergo intrachain cross-linking to form SCNP; however, when an electron deficient monomer such as maleic anhydride is added, interchain coupling occurs. For the stilbene-functionalized polymer, no homopolymerization of pendant stilbene units is observed, but copolymerization initiated in the presence of maleic anhydride or N-ethyl maleimide results in nanoparticle formation. Fluorescent SCNP are synthesized using N-(1-pyrene)maleimide. Stilbene is known to undergo alternating copolymerization with these electron-deficient monomers, providing a new method for synthesizing cross-linked particles with simple alternating sequences while simultaneously installing functionality and tuning the particle size and density.
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