Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: 
critical role of Pt-activation

Hill, Lawrence J.; Richey, Nathaniel E.; Sung, Younghun; Dirlam, Philip T.; Griebel, Jared J.; Shim, In-Bo; Pinna, Nicola; Willinger, Marc Georg; Vogel, Walter; Char, Kookheon; Pyun, Jeffrey

doi:10.1039/C4CE00680A

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Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: critical role of Pt-activation

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Willinger, Marc Georg
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Zitation

Hill, L. J., Richey, N. E., Sung, Y., Dirlam, P. T., Griebel, J. J., Shim, I.-B., et al. (2014). Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: critical role of Pt-activation. CrystEngComm, 16(40), 9461-9468. doi:10.1039/C4CE00680A.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0019-C34D-F

Zusammenfassung

The synthesis of a ferromagnetic heterostructured material consisting of a CdSe@CdS nanorod attached to a single dipolar cobalt nanoparticle (CoNP) into a “matchstick” morphology is reported. CdSe@CdS nanorods were modified by an activation reaction with Pt(acac)₂ which enabled selective one-sided deposition of a dipolar metallic CoNP-tip via the thermolysis of Co₂(CO)₈ in the presence of polystyrene ligands. Small (<2 nm) PtNP-tips on CdSe@CdS nanorods were found to be responsible for the selective deposition of CoNP-tips onto one terminus per nanorod. The influence of the Pt-activation step for cobalt tipping was investigated by examination of numerous conditions and characterization of intermediates and materials using transmission electron microscopy and synchrotron X-ray diffraction.