Abstract

Monolayer modification of alkylamine-protected γ-Fe2O3 nanoparticles using functionalized alcohols and diols is presented. the stability of the modified nanoparticles was found to be dependent on the nature of the introduced alcohol: both bidentate surface−ligand bonding and steric blocking by bulky tail groups were necessary to produce systems resistant to agglomeration. EPR, UV−vis, and powder XRD analyses of the pre- and post-modified nanoparticles demonstrated that the core γ-Fe2O3 functionality was unaffected by the change in monolayer composition. Finally, multiple ligands could be readily incorporated into the monolayer using a simultaneous displacement reaction.

Keywords

MonolayerNanoparticleSteric effectsChemistryLigand (biochemistry)Electron paramagnetic resonanceDenticitySingle displacement reactionChemical engineeringMaterials scienceCrystallographyOrganic chemistryNanotechnologyCrystal structure

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Publication Info

Year
2002
Type
article
Volume
14
Issue
6
Pages
2628-2636
Citations
108
Access
Closed

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Cite This

Andrew K. Boal, Kanad Das, Mark Gray et al. (2002). Monolayer Exchange Chemistry of γ-Fe<sub>2</sub>O<sub>3</sub> Nanoparticles. Chemistry of Materials , 14 (6) , 2628-2636. https://doi.org/10.1021/cm011689p

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DOI
10.1021/cm011689p

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Data completeness: 81%