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

Research output: Contribution to journalArticle

55 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)3570-3575
Number of pages6
JournalMacromolecules
Volume43
Issue number7
DOIs
Publication statusPublished - 2010 Apr 13

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Sulfhydryl Compounds
Gold
Thermodynamic stability
Ligands
Dibutyl Phthalate
Nanoparticles
Nanocomposite films
Azides
Centrifugation
Irradiation
Heating
Thin films

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands. / Yoo, Misang; Kim, Seyong; Lim, Jongmin; Kramer, Edward J.; Hawker, Craig J.; Kim, Bumjoon J.; Bang, Joona.

In: Macromolecules, Vol. 43, No. 7, 13.04.2010, p. 3570-3575.

Research output: Contribution to journalArticle

Yoo, Misang ; Kim, Seyong ; Lim, Jongmin ; Kramer, Edward J. ; Hawker, Craig J. ; Kim, Bumjoon J. ; Bang, Joona. / Facile synthesis of thermally stable core-shell gold nanoparticles via photo-cross-linkable polymeric ligands. In: Macromolecules. 2010 ; Vol. 43, No. 7. pp. 3570-3575.
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