Web Release Date: February 27,
Synthesis and Self-Assembly of One-Dimensional Sub-10 nm Ag Nanoparticles with Cyclodextrin
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
Received: November 2, 2007
In Final Form: December 30, 2007
Abstract:
A facile and effective method to produce sub-10 nm Ag nanoparticles in a water solution is reported.
Stabilization of the nanoparticles was achieved by hydrophobic interactions with the apolar primary faces of
-CD. In addition, hydrogen-bonding interactions between the exposed secondary -OH groups facilitated the
threading of neighboring CDs, leading to the self-assembly of the Ag nanoparticles into 1-D "pearl necklace"
arrays. The preparation of such metal nanoparticles unravels possibilities for the assembly of nanoparticles in
2- and 3-D patterns.
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