Macromolecular Research

, Volume 17, Issue 11, pp 926–930 | Cite as

Encapsulation of nanomaterials within intermediary layer cross-linked micelles using a photo-cross-linking agent

  • Jin Sook Kim
  • Ji Ho Youk


A new method for encapsulating nanomaterials within intermediary layer cross-linked (ILCL) polymeric micelles using a bifunctional photo-cross-linking agent was developed. For ILCL polymeric micelles, an amphiphilic triblock copolymer of poly(ethylene glycol)-b-poly(2-hydroxyethyl methacrylate)-b-poly(methyl methacrylate) (PEGPHEMA-PMMA) was synthesized via consecutive atom transfer radical polymerization (ATRP). Di(4-hydroxyl benzophenone) dodecanedioate (BPD) was used as a bifunctional photo-cross-linking agent. The PMMA-tethered Au nanoparticles and BPD, or pyrene and BPD were encapsulated in the PEG-PHEMA-PMMA micelles, and their intermediary layers were photo-cross-linked by UV irradiation for 1 h. The HEMA units donated labile hydrogens to the excited-state benzophenone groups in BPD, and they were subsequently cross-linked by BPD through radicalradical combination. The spherical structures of the PEG-PHEMA-PMMA micelles containing the Au nanoparticles or pyrene were unaffected by the photo-cross-linking process.


amphiphilic triblock copolymer intermediary layer cross-linked (ILCL) micelles photo-cross-linking agent encapsulation 


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Copyright information

© The Polymer Society of Korea and Springer 2009

Authors and Affiliations

  1. 1.Department of Advanced Fiber Engineering, Division of Nano-SystemsInha UniversityIncheonKorea

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