Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands

Misang Yoo; Seyong Kim; Jongmin Lim; Edward J. Kramer; Craig J. Hawker; Bumjoon J. Kim; Joona Bang

doi:10.1021/ma1000145

Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands

Misang Yoo, Seyong Kim, Jongmin Lim, Edward J. Kramer, Craig J. Hawker, Bumjoon J. Kim, Joona Bang

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

The thermally stable gold nanoparticles (Au NP) by introducing photo-cross-linkable azide groups (-N_s) into the polymeric ligands attached to the Au core was reported. The cross-linking reaction and the subsequent evaluation of thermal stability for the P(S-b-S-N₃)-Au NPs were conducted in both solution and nanocomposite thin films. The cross-linked Au NPs were separated by centrifugation and dried and the thermal stability of the Au NPs in solution was tested by using dibutyl phthalate (DBP). The nanoparticles for un-cross-linked PS-Au NPs were aggregated and precipitated upon heating due to the dissociation of the Au-thiol bonds. The results indicated that the PS-N₃ blocks in P(S-b-S-N₃)-Au NPs could be successfully cross-linked through UV irradiation, and the dissociation of Au and thiol bond was completely suppressed due to the presence of the cross-linked PS-N₃ shell.

Original language	English
Pages (from-to)	3570-3575
Number of pages	6
Journal	Macromolecules
Volume	43
Issue number	7
DOIs	https://doi.org/10.1021/ma1000145
Publication status	Published - 2010 Apr 13

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma1000145

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title = "Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands",

abstract = "The thermally stable gold nanoparticles (Au NP) by introducing photo-cross-linkable azide groups (-Ns) into the polymeric ligands attached to the Au core was reported. The cross-linking reaction and the subsequent evaluation of thermal stability for the P(S-b-S-N3)-Au NPs were conducted in both solution and nanocomposite thin films. The cross-linked Au NPs were separated by centrifugation and dried and the thermal stability of the Au NPs in solution was tested by using dibutyl phthalate (DBP). The nanoparticles for un-cross-linked PS-Au NPs were aggregated and precipitated upon heating due to the dissociation of the Au-thiol bonds. The results indicated that the PS-N3 blocks in P(S-b-S-N3)-Au NPs could be successfully cross-linked through UV irradiation, and the dissociation of Au and thiol bond was completely suppressed due to the presence of the cross-linked PS-N3 shell.",

author = "Misang Yoo and Seyong Kim and Jongmin Lim and Kramer, {Edward J.} and Hawker, {Craig J.} and Kim, {Bumjoon J.} and Joona Bang",

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T1 - Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands

AU - Yoo, Misang

AU - Kim, Seyong

AU - Lim, Jongmin

AU - Kramer, Edward J.

AU - Hawker, Craig J.

AU - Kim, Bumjoon J.

AU - Bang, Joona

PY - 2010/4/13

Y1 - 2010/4/13

N2 - The thermally stable gold nanoparticles (Au NP) by introducing photo-cross-linkable azide groups (-Ns) into the polymeric ligands attached to the Au core was reported. The cross-linking reaction and the subsequent evaluation of thermal stability for the P(S-b-S-N3)-Au NPs were conducted in both solution and nanocomposite thin films. The cross-linked Au NPs were separated by centrifugation and dried and the thermal stability of the Au NPs in solution was tested by using dibutyl phthalate (DBP). The nanoparticles for un-cross-linked PS-Au NPs were aggregated and precipitated upon heating due to the dissociation of the Au-thiol bonds. The results indicated that the PS-N3 blocks in P(S-b-S-N3)-Au NPs could be successfully cross-linked through UV irradiation, and the dissociation of Au and thiol bond was completely suppressed due to the presence of the cross-linked PS-N3 shell.

AB - The thermally stable gold nanoparticles (Au NP) by introducing photo-cross-linkable azide groups (-Ns) into the polymeric ligands attached to the Au core was reported. The cross-linking reaction and the subsequent evaluation of thermal stability for the P(S-b-S-N3)-Au NPs were conducted in both solution and nanocomposite thin films. The cross-linked Au NPs were separated by centrifugation and dried and the thermal stability of the Au NPs in solution was tested by using dibutyl phthalate (DBP). The nanoparticles for un-cross-linked PS-Au NPs were aggregated and precipitated upon heating due to the dissociation of the Au-thiol bonds. The results indicated that the PS-N3 blocks in P(S-b-S-N3)-Au NPs could be successfully cross-linked through UV irradiation, and the dissociation of Au and thiol bond was completely suppressed due to the presence of the cross-linked PS-N3 shell.

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Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands

Abstract

ASJC Scopus subject areas

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