Abstract
Aggregates of phosphatidylcholine-passivated gold nanorods were prepared by the addition of hydrochloric acid in the presence of 6-amino-1-hexanethiol hydrochloride (AHT). The aggregates dried in vacuum formed a solid film showing a metallic gold color. In spite of the absence of the stable surface-wrapping agents, such as balky polymer or thiol-molecules that form stable self-organized films on a gold surface, the dried aggregates dispersed again in water. The redispersed gold nanorods in water did not form aggregates. If the dried nanorods were kept at room temperature for 24 h, they did not disperse in water again; however, at -30 °C, some of gold nanorods could be redispersed in water. At -80 °C, gold nanorods could be redispersed in water as colloidal nanoparticles even after 2 months. The phosphatidylcholine and AHT molecules on the nanorod surfaces contributed to the suppression of the contact of nanorods, which were in the metallic gold color films.
| Original language | English |
|---|---|
| Pages (from-to) | 3413-3421 |
| Number of pages | 9 |
| Journal | Journal of Nanoparticle Research |
| Volume | 13 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 1 2011 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Atomic and Molecular Physics, and Optics
- Modelling and Simulation
- Materials Science(all)
- Condensed Matter Physics
Cite this
Redispersion of dried gold nanorods in the presence of 6-amino-1- hexanethiol hydrochloride. / Honda, Kanako; Kawazumi, Hirofumi; Nakashima, Naotoshi; Niidome, Yasuro.
In: Journal of Nanoparticle Research, Vol. 13, No. 8, 01.08.2011, p. 3413-3421.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Redispersion of dried gold nanorods in the presence of 6-amino-1- hexanethiol hydrochloride
AU - Honda, Kanako
AU - Kawazumi, Hirofumi
AU - Nakashima, Naotoshi
AU - Niidome, Yasuro
PY - 2011/8/1
Y1 - 2011/8/1
N2 - Aggregates of phosphatidylcholine-passivated gold nanorods were prepared by the addition of hydrochloric acid in the presence of 6-amino-1-hexanethiol hydrochloride (AHT). The aggregates dried in vacuum formed a solid film showing a metallic gold color. In spite of the absence of the stable surface-wrapping agents, such as balky polymer or thiol-molecules that form stable self-organized films on a gold surface, the dried aggregates dispersed again in water. The redispersed gold nanorods in water did not form aggregates. If the dried nanorods were kept at room temperature for 24 h, they did not disperse in water again; however, at -30 °C, some of gold nanorods could be redispersed in water. At -80 °C, gold nanorods could be redispersed in water as colloidal nanoparticles even after 2 months. The phosphatidylcholine and AHT molecules on the nanorod surfaces contributed to the suppression of the contact of nanorods, which were in the metallic gold color films.
AB - Aggregates of phosphatidylcholine-passivated gold nanorods were prepared by the addition of hydrochloric acid in the presence of 6-amino-1-hexanethiol hydrochloride (AHT). The aggregates dried in vacuum formed a solid film showing a metallic gold color. In spite of the absence of the stable surface-wrapping agents, such as balky polymer or thiol-molecules that form stable self-organized films on a gold surface, the dried aggregates dispersed again in water. The redispersed gold nanorods in water did not form aggregates. If the dried nanorods were kept at room temperature for 24 h, they did not disperse in water again; however, at -30 °C, some of gold nanorods could be redispersed in water. At -80 °C, gold nanorods could be redispersed in water as colloidal nanoparticles even after 2 months. The phosphatidylcholine and AHT molecules on the nanorod surfaces contributed to the suppression of the contact of nanorods, which were in the metallic gold color films.
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UR - http://www.scopus.com/inward/citedby.url?scp=80051579209&partnerID=8YFLogxK
U2 - 10.1007/s11051-011-0263-9
DO - 10.1007/s11051-011-0263-9
M3 - Article
AN - SCOPUS:80051579209
VL - 13
SP - 3413
EP - 3421
JO - Journal of Nanoparticle Research
JF - Journal of Nanoparticle Research
SN - 1388-0764
IS - 8
ER -