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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Sequential synthesis of coordination polymersomes.

Ryo Ohtani1, Munehiro Inukai, Yuh Hijikata

  • 1Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan).

Angewandte Chemie (International Ed. in English)
|December 6, 2014
PubMed
Summary
This summary is machine-generated.

Researchers developed novel coordination polymersomes (CPsomes), which are hybrid liposomes with artificial domains. These CPsomes demonstrate strong lateral cohesion, offering a new platform for constructing advanced biomimetic materials.

Keywords:
coordination polymersliposomesnanostructuressupramolecular chemistry

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Liposomes are essential in drug delivery and biomimetic systems.
  • Creating stable, functional domains within liposomes remains a challenge.
  • Coordination polymers offer tunable properties for advanced materials.

Purpose of the Study:

  • To synthesize novel organic-inorganic hybrid liposomes, termed coordination polymersomes (CPsomes).
  • To engineer artificial domains within liposomes exhibiting strong lateral cohesion.
  • To explore the potential of CPsomes as biomimetic architectures.

Main Methods:

  • Synthesis of a lipophilic complex, (dabco-C18)[Mn(N)(CN)4(dabco-C18)] (1).
  • Mixing complex 1 with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine to form liposomes.
  • Incorporating transition-metal ions (M) to create Mn-CN-M linkages and form CPsomes.

Main Results:

  • Successfully prepared coordination polymersomes (CPsomes) with distinct artificial raft domains.
  • Demonstrated that the concentration of complex 1 influences CP raft domain size and CPsomes shape.
  • Observed strong lateral cohesion within the engineered CP raft domains.

Conclusions:

  • The synthesis of coordination polymers within lipid bilayers is a novel approach.
  • CPsomes represent a new class of hybrid materials with tunable properties.
  • This method enables the construction of artificial architectures mimicking natural membrane domains.