Volume 118, Number 6, June 2017
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||11 August 2017|
Amphiphilic self-assembly of semiconductor nanocrystals with heterogeneous compositions (a)
1 Graduate School of Materials Science, Nara Institute of Science and Technology - Ikoma, 630-0192, Nara, Japan
2 Department of Mechanical Engineering, Kindai University - Higashi Osaka, 577-8502, Osaka, Japan
Received: 30 June 2017
Accepted: 2 August 2017
We describe herein that amphiphilic semiconductor nanocrystals (NCs) self-assembled into network structures with heterogeneous compositions. The semiconductor nanorods and tetrapods were subjected to ligand exchange with short-chained water-soluble thiolates, giving an amphiphilic surface pattern with a hydrophilic wall and hydrophobic tips. The amphiphilic NCs self-assembled through hydrophobic effects between tip-surfaces in water. The hydrophobic effect-facilitated self-assembly of NCs was well reproduced by a dissipative particle dynamics simulation. The amphiphilic self-assembly of NCs was demonstrated regardless of NC-shapes and compositions to give semiconductor NC-network structures with heterogeneous compositions. The tandem connection of luminescent core/shell nanorods demonstrated energy transfer between the nanorods in the self-assembly.
PACS: 81.07.Bc – Nanocrystalline materials / 82.70.Dd – Colloids / 87.16.dr – Assembly and interactions
© EPLA, 2017
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