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

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

DOI:
10.3791/50874-v

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06:56 min

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October 10, 2013

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, ,
1Department of Chemistry,Massachusetts Institute of Technology

Capitoli

  • 00:05Titolo
  • 01:18Preparation of Norbornene-PEG Macromonomer
  • 02:11Preparation of Catalyst A
  • 03:03Preparation of Stock Solution of Living Brush Polymer with DP=10
  • 04:08Formation of Brush-arm Star Polymers
  • 05:08Results: Characterization of Photodegradable Brush-arm Star Polymers by Gel Permeation Chromatography
  • 06:09Conclusion

Summary

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Traduzione automatica

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.

Tags

Brush-first SynthesisPhotodegradable PEG Star PolymersNanoparticlesRing-opening Metathesis Polymerization (ROMP)Brush MacroinitiatorBrush+brush CouplingStar+star CouplingGel Permeation Chromatography (GPC)

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