Mechanoresponsive system based on sub-micron chitosan-functionalized ferromagnetic disks

Dong-Hyun Kim; Pavel Karavayev; Elena A. Rozhkova; John Pearson; Volodymyr Yefremenko; Samuel D. Bader; Valentyn Novosad

doi:10.1039/C1JM10272A

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Journal of Materials Chemistry

Issue 23, 2011

Journal of Materials Chemistry was published between 1991 and 2012. From issue 1, 2013, it was replaced by three new journals: Journal of Materials Chemistry A, B and C

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Mechanoresponsive system based on sub-micron chitosan-functionalized ferromagnetic disks

Dong-Hyun Kim,^a Pavel Karavayev,^b Elena A. Rozhkova,*^c John Pearson,^a Volodymyr Yefremenko,^a Samuel D. Bader^a^c and Valentyn Novosad*^a

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Corresponding authors

Materials Science Division, Argonne National Laboratory, Argonne, USA
E-mail: novosad@anl.gov

Eberly College of Science, Pennsylvania State University, University Park, USA

Center for Nanoscale Materials, Argonne National Laboratory, Argonne, USA
E-mail: rozhkova@anl.gov

J. Mater. Chem., 2011,21, 8422-8426

DOI: 10.1039/C1JM10272A
Received 18 Jan 2011, Accepted 23 Feb 2011
First published online 24 Mar 2011

This article is part of themed collection: Mechanoresponsive materials

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Abstract
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We report a doxorubicin loaded chitosan biopolymer–ferromagnetic disks hybrid system capable of on-demand magnetomechanically induced release of drug molecules. Gold covered ferromagnetic disks were encapsulated into the polymer scaffold through the assembly of the thiolated chitosan on the disk's gold surface followed by entrapping of the doxorubicin drug within a cross-linked polymer matrix. We demonstrate that the release process can be effectively tuned and controlled by varying the magnetic field characteristics: orientation, amplitude, frequency and duration.

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Dong-Hyun Kim
Pavel Karavayev
Elena A. Rozhkova
John Pearson
Volodymyr Yefremenko
Samuel D. Bader
Valentyn Novosad

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