Polyion complex micelle formed from tetraphenylethene containing block copolymer

Seong Min Lee, Woo Dong Jang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Background: Polymeric micelles attract great attention in drug delivery and therapeutics. Various types of block copolymers have been designed for the application in biomedical fields. If we can introduce additional functional groups to the block copolymers, we can achieve advanced applications. In this regards, we tried to introduce aggregation induced emission enhancement (AIE) unit in the block copolymer. Methods: The formation of polyion complex micelle was confirmed by dynamic light scattering and transmission electron microscopy. HeLa cells were incubated with polyion complex micelle and broad-band visible light using a halogen lamp (150 W) was irradiated to evaluate photocytotoxicity of polyion complex (PIC) micelle. Results: For the design of functional polymeric micelle, aggregation induced emission enhancement unit was introduced in the middle of block copolymer. We newly synthesized a new type block copolymer (PEG-TPE-PEI) possessing tetraphenylethene (TPE) group, as an AIE unit, in the middle of polymeric segments of PEG and PEI, which successfully formed PIC micelle with DP. The formation of PIC micelle was confirmed by dynamic light scattering, ζ potential measurement and transmission electron microscopy. Conclusions: PEG-TPE-PEI successfully formed PIC micelle by mixing with negatively charged dendrimer porphyrin. The PIC micelle exhibited photocytotoxicity upon illumination of broadband visible light.

Original languageEnglish
Article number17
JournalBiomaterials Research
Issue number1
Publication statusPublished - 2017

Bibliographical note

Funding Information:
This work was supported by the Mid-Career Researcher Program (2014R1A2A1A10051083) funded by the National Research Foundation (NRF) of Korea, Ministry of Science, ICT & Future.

Publisher Copyright:
© 2017 The Author(s).

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Medicine (miscellaneous)
  • Biomaterials
  • Biomedical Engineering


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