Single Step Process for Self-Assembled Block Copolymer Patterns via in Situ Annealing during Spin-Casting

Hyunjung Jung, Sanghoon Woo, Youngson Choe, Du Yeol Ryu, June Huh, Joona Bang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We demonstrated a simple and time-efficient processing method for facilitating a microphase separation of block copolymers (BCPs) based on a single step of spin-casting with low volatile solvent and in situ annealing. Well-ordered lamellar patterns of poly(styrene-b-methyl methacrylate) BCP films having wide range of molecular weights (51-235 kg/mol) were fabricated by a single 3 min process of spin-casting, even without the conventional pretreatment of substrate neutralization. The formation of this well-ordered lamellar structure is attributed to a synergetic effect between slow solvent evaporation and thermal energy that may provide an efficient cooling profile for the BCP film during the spin-casting process.

Original languageEnglish
Pages (from-to)656-660
Number of pages5
JournalACS Macro Letters
Volume4
Issue number6
DOIs
Publication statusPublished - 2015 Jun 16

ASJC Scopus subject areas

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

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