Hybrid gold-nanoparticle-cored conjugated thiophene dendrimers

Synthesis, characterization, and energy-transfer studies

Suxiang Deng, Timothy M. Fulghum, Greg Krueger, Derek Patton, Jin Young Park, Rigoberto C. Advincula

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A series of hybrid Au-nanoparticle-dendrimer materials: nanoparticle-cored thiophene dendrimers (NCTDs) were synthesized, characterized, and investigated for their energy-transfer properties. These hybrid nanoparticles were obtained by the simultaneous and in situ reduction of gold(III) chloride and self-assembly of the thiol-containing thiophene dendritic ligands. The dendron ligands were radially attached to the gold nanoparticles and were analyzed by TEM, UV/Vis, 1H NMR, and FTIR spectroscopies. The solution fluorescence of the attached thiophene dendrons are quenched progressively. Both alkyl-chain length and dendron size have significant influence on the energy-transfer efficiency, as well as on core sizes and size distribution of the Au nanoparticles. In spite of the phenomenon's dependence on nanoparticle size, the energy transfer generally follows the 1/d2 distance dependence. Single NCTD nanoparticles were also adsorbed on highly ordered pyrolytic graphite (HOPG) and uniform aggregates were observed on mica flat substrates.

Original languageEnglish
Pages (from-to)8929-8940
Number of pages12
JournalChemistry - A European Journal
Volume17
Issue number32
DOIs
Publication statusPublished - 2011 Aug 1
Externally publishedYes

Fingerprint

Dendrimers
Thiophenes
Thiophene
Gold
Energy transfer
Nanoparticles
Ligands
Graphite
Mica
Chain length
Sulfhydryl Compounds
Self assembly
Chlorides
Fluorescence
Nuclear magnetic resonance
Spectroscopy
Transmission electron microscopy
Substrates

Keywords

  • dendrimers
  • emission
  • energy transfer
  • hybrids
  • nanoparticles

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Hybrid gold-nanoparticle-cored conjugated thiophene dendrimers : Synthesis, characterization, and energy-transfer studies. / Deng, Suxiang; Fulghum, Timothy M.; Krueger, Greg; Patton, Derek; Park, Jin Young; Advincula, Rigoberto C.

In: Chemistry - A European Journal, Vol. 17, No. 32, 01.08.2011, p. 8929-8940.

Research output: Contribution to journalArticle

Deng, Suxiang ; Fulghum, Timothy M. ; Krueger, Greg ; Patton, Derek ; Park, Jin Young ; Advincula, Rigoberto C. / Hybrid gold-nanoparticle-cored conjugated thiophene dendrimers : Synthesis, characterization, and energy-transfer studies. In: Chemistry - A European Journal. 2011 ; Vol. 17, No. 32. pp. 8929-8940.
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