Cyclic poly(vinylcarbazole) via ring-expansion polymerization-RAFT (REP-RAFT)

Ajaykumar Bunha, Peng Fei Cao, Joey Dacula Mangadlao, Rigoberto C. Advincula*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


In this paper, we demonstrate the formation of cyclic poly(vinylcarbazole) via a ring-expansion polymerization reversible addition-fragmentation chain transfer (REP-RAFT). A cyclic dixanthate RAFT chain transfer agent (CTA) was synthesized and employed for controlled free radical polymerization of N-vinylcarbazole (NVK). The molecular weight in relation to polymerization time suggested the formation of a polymer with well-controlled molecular weight and ring size. The obtained macromolecules were characterized by nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS). Atomic force microscopy (AFM) was also employed to directly observe the cyclic polymers with different ring sizes.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalReactive and Functional Polymers
Issue number1
Publication statusPublished - 2014
Externally publishedYes


  • Cyclic RAFT initiator
  • N-vinylcarbazole (NVK)
  • Ring-expansion polymerization

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Chemistry(all)
  • Chemical Engineering(all)
  • Environmental Chemistry
  • Biochemistry


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