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Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions

DOI :

10.3791/50874-v

October 10th, 2013

October 10th, 2013

39,420 Views

1Department of Chemistry, Massachusetts Institute of Technology

Poly(ethylene glycol) (PEG) brush-arm star polymers (BASPs) with narrow mass distributions and tunable nanoscopic sizes are synthesized in via ring opening metathesis polymerization (ROMP) of a PEG-norbornene macromonomer followed by transfer of portions of the resulting living brush initiator to vials containing varied amounts of a rigid, photo-cleavable bis-norbornene crosslinker.

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