Synthesis of water soluble PEGylated magnetic complexes using mPEG-fatty acid for biomedical applications

Eun Kyung Lim, Jaemoon Yang, Mee ye Park, Joseph Park, Jin Suck Suh, Ho Geun Yoon, Yong Min Huh, Seungjoo Haam

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


We report the successful fabrication of the various types of water soluble PEGylated magnetic complexes (PMCs) for magnetism-related biomedical applications. Various types of PMCs were synthesized and tested to accomplish phase transfer from organic to aqueous phase using monomethoxy polyethylene glycol (mPEG)-fatty acid amphiphilic block copolymers (PFs) through conjugation of the hydroxyl group of mPEG with the carboxyl group of fatty acids. We also carefully investigate their colloidal stabilities in aqueous phase according to the ratio of hydrophilic and hydrophobic lengths relying on different types of fatty acids. Synthesized PMCs clearly demonstrated high magnetic sensitivity under magnetic field as magnetic resonance (MR) contrast agents. Furthermore, PMCs exhibited sufficient cell viabilities and excellent cell affinities in an in vitro model. Our results demonstrated that our PMCs possessed the potential for highly efficient magnetism-related biomedical applications such as MR image agents, drug delivery and tracking of cells.

Original languageEnglish
Pages (from-to)111-117
Number of pages7
JournalColloids and Surfaces B: Biointerfaces
Issue number1
Publication statusPublished - 2008 Jun 15

Bibliographical note

Funding Information:
This work was supported by Korea Science and Engineering Foundation (KOSEF) (R15-2004-024-00000-0, M10755020001-07N5502-00110 and R01-2006-000-10023-0) and a grant of the National R&D Program for Cancer Control, Korea Ministry of Health & Welfare (0620190-1).

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry


Dive into the research topics of 'Synthesis of water soluble PEGylated magnetic complexes using mPEG-fatty acid for biomedical applications'. Together they form a unique fingerprint.

Cite this