Figure-Eight-Shaped and Cage-Shaped Cyclic Polystyrenes

Taeheon Lee, Joongsuk Oh, Jonghwa Jeong, Haeji Jung, June Huh, Taihyun Chang, Hyun Jong Paik

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Nonlinear polystyrenes (PS) with similar molecular weights but with different molecular structures having star-, figure-8-, and cage-shaped architectures were synthesized by combining atom transfer radical polymerization (ATRP) and click chemistry. Figure-8- and cage-shaped PS were fractionated by using a gradient normal phase liquid chromatography as confirmed by SEC-LS, MALDI-TOF MS, 1H NMR, and FT-IR spectrometry. Their purities were estimated by using a two-dimensional liquid chromatography (2D-LC). The glass transition temperatures of these topologically different polymers were in the order of cage-, figure-8-, and star-shaped polymers possibly due to the multiple links that constrain the overall molecular diffusivity in the case of multicyclic polymers (figure-8, and cage). Monte Carlo simulation on the glass transition behavior of model system also agreed well with the experimental results.

Original languageEnglish
Pages (from-to)3672-3680
Number of pages9
JournalMacromolecules
Volume49
Issue number10
DOIs
Publication statusPublished - 2016 May 24

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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