Synthesis and characterization of ladder-like structured polysilsesquioxane with carbazole group

Seung Sock Choi, Albert S. Lee, He Seung Lee, Kyung Youl Baek, Dong Hoon Choi, Seung Sang Hwang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Poly(propyl carbazole silsesquioxane) (PPCSQ) with a high molecular weight (M w = 10,200) was synthesized by the direct hydrolysis of 9-[3-(trimethoxysilyl) propyl]-9H-carbazole with K2CO3, followed by a condensation reaction in an H2O/dimethylformamide (DMF) mixture solvent at 25 °C. The obtained PPCSQ consisted of ladder-like structured siloxane bonds with carbarzole groups as the pendant group, where the distance between two carbarzole pendant groups through the siloxane backbone was 15.6 Å and the mean thickness of the siloxane backbone was 4.3 Å. This PPCSQ was thermally stable up to 450 °C and the glass transition temperature was ca. 95 °C, showing good film formablity by spin casting.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalMacromolecular Research
Volume19
Issue number3
DOIs
Publication statusPublished - 2011 Mar

Keywords

  • carbazole
  • hybrid material
  • ladder-like
  • polysilsesquioxane

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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