Allylimidazolium salt based antibacterial polymer coatings produced by thiol-ene photocuring

Mirinae Kim, Chiman Song, Dong Keun Han, Kwang Duk Ahn, Seung Sang Hwang, Dong June Ahn, Man Ho Kim

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Photocurable formulations containing trifunctional thiol, trifunctional ene, and antibacterial allylimidazolium salts have been employed for transparent antibacterial coatings. The antibacterial component 1-allyl-3-dodecylimidazolium salt (ADIm) is prepared and chemically attached to polymer networks using a one-step thiol-ene photocuring reaction. Ultra-small (USANS) and small angle neutron scattering (SANS) measurements show that the photocured polymers are loosely networked three-dimensional structures with a mass fractal of approximately 2.7 ± 0.2. The minimum inhibitory concentration (MIC) for the ADIm was determined to be 500 μg/ml and 15.63 μg/ml for Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) bacteria, respectively. Coating formulations containing 10 mol% of the antibacterial ADIm photocured on glass substrates showed strong antibacterial activity against environmental bacteria such as E. coli and/or S. aureus.

Original languageEnglish
Pages (from-to)53-60
Number of pages8
JournalReactive and Functional Polymers
Publication statusPublished - 2015 Feb

Bibliographical note

Funding Information:
MHK acknowledges partial financial support from Korea Institute of Science and Technology (2v03611). DJA acknowledges the support by the National Research Foundation (MSIP 2014023305, 2014010072) of Korea. We have benefited from Dr. Seong, B.K. of the HANARO at Korea Atomic Energy Research Institute for experimental support of 18 m-SANS. A part of this work was presented at the13th RadTech Asia held during May 20 to 24, 2013 in Shanghai, China. Reviewers provided valuable comments.


  • Allylimidazolium salts
  • Antibacterial coating
  • Antibacterial polymers
  • Mass fractal network
  • Thiol-ene photocuring

ASJC Scopus subject areas

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


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