Magnetically controlled release of dispersed iron oxide nanoparticles from imprinted organic thin films

Julia Witt, Daniel Mandler, Gunther Wittstock

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Iron oxide nanoparticles (Fe3O4-NP) were compressed together with oleic acid (OA) in a Langmuir-Blodgett trough. Optimized dilution of the NP allowed the transfer of two-dimensional nanocomposites of Fe3O4-NP and OA to gold substrates. The characterization of the two-dimensional composite by scanning force microscopy (SFM) showed the existence of a sub-monolayer coverage with a few NP being pushed into the second layer. Polarization modulation infrared reflection absorption spectra (PM IRRAS) showed the presence of oleic acid. The nanoparticles could be removed in an external magnetic field of a permanent magnet as evidenced by SFM while the OA monolayer was left on the gold substrate as shown by PM IRRAS. Such composite layers can be used for the controlled release of specified small amount of intact NP.

Original languageAmerican English
Title of host publicationNano/Biosensors and Actuators
EditorsA. L. Simonian, B. A. Chin, N. Wu, S. Mitra, L. A. Nagahara, D. Cliffel, Z. P. Aguilar, J. E. Koehne
PublisherElectrochemical Society Inc.
Pages1-7
Number of pages7
Edition36
ISBN (Electronic)9781607686590
DOIs
StatePublished - 2015
EventSymposium on Nano/Biosensors and Actuators - 227th ECS Meeting - Chicago, United States
Duration: 24 May 201528 May 2015

Publication series

NameECS Transactions
Number36
Volume66
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Nano/Biosensors and Actuators - 227th ECS Meeting
Country/TerritoryUnited States
CityChicago
Period24/05/1528/05/15

Bibliographical note

Publisher Copyright:
© The Electrochemical Society.

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