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December 15, 2019Journal of Polymer Science Part A Polymer Chemistry

Synthesis of well‐defined block copolymer composed of flexible amphiphilic poly(ethylene glycol) and hydrophobic liquid crystalline segments by living coordination polymerization of allene derivatives and its application to thin film with perpendicularly oriented cylindrical nanostructure

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Authors

KSKoyuki SakaiHNHiroki NishiyamaSIShinsuke Inagi

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Overview

Experimental study demonstrates perpendicularly oriented cylindrical nanostructures in block copolymer thin films, suggesting utility in advanced nanolithography.

Key Points

  • Synthesize an amphiphilic liquid crystalline block copolymer and investigate its self-assembly into vertically oriented nanostructures within thin films.
  • Synthesized block copolymers via living coordination polymerization of an allene monomer bearing a trans-azobenzene mesogen using a nickel-based PEG macroinitiator.
  • Fabricated thin films via spin-coating polymer solutions onto mica and silicon substrates.
  • Characterized phase transitions and morphology using calorimetry, polarized optical microscopy, GI-SAXS, TEM, and AFM.
  • Successfully produced well-defined block copolymers combining flexible hydrophilic PEG segments with hydrophobic liquid crystalline poly(allene) domains.
  • Formed microphase-separated thin films displaying perpendicularly oriented cylindrical nanostructures across both mica and silicon substrates.

Cite This Study

Sakai et al. (2019) studied this question.

synapsesocial.com/papers/6a964aa765cd0d1d26bb6bb7https://doi.org/10.1002/pol.20190165
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