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

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

doi:10.1039/c4ce00680a

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

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

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Abstract

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.

Original language	English
Pages (from-to)	9461-9468
Number of pages	8
Journal	CrystEngComm
Volume	16
Issue number	40
DOIs	https://doi.org/10.1039/c4ce00680a
State	Published - 28 Oct 2014
Externally published	Yes

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title = "Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: Critical role of Pt-activation",

abstract = "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.",

author = "Hill, {Lawrence J.} and Richey, {Nathaniel E.} and Younghun Sung and Dirlam, {Philip T.} and Griebel, {Jared J.} and Shim, {In Bo} and Nicola Pinna and Willinger, {Marc Georg} and Walter Vogel and Kookheon Char and Jeffrey Pyun",

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doi = "10.1039/c4ce00680a",

language = "English",

volume = "16",

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TY - JOUR

T1 - Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods

T2 - Critical role of Pt-activation

AU - Hill, Lawrence J.

AU - Richey, Nathaniel E.

AU - Sung, Younghun

AU - Dirlam, Philip T.

AU - Griebel, Jared J.

AU - Shim, In Bo

AU - Pinna, Nicola

AU - Willinger, Marc Georg

AU - Vogel, Walter

AU - Char, Kookheon

AU - Pyun, Jeffrey

PY - 2014/10/28

Y1 - 2014/10/28

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84909606126&partnerID=8YFLogxK

U2 - 10.1039/c4ce00680a

DO - 10.1039/c4ce00680a

M3 - Article

AN - SCOPUS:84909606126

SN - 1466-8033

VL - 16

SP - 9461

EP - 9468

JO - CrystEngComm

JF - CrystEngComm

IS - 40

ER -

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

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