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7633561 
Journal Article 
Self organization of gold nanoparticles into 2D superlattice through pi-pi interacton 
Wang, TX; Zhang, DQ; Xu, W; Zhu, DB; , 
2003 
1 
Synthetic Metals
ISSN: 0379-6779 
ELSEVIER SCIENCE SA 
LAUSANNE 
135-136 
835-836 
English 
WOS:000182533700392 
Gold nanoparticle protected by alkylthiols with pyrene moieties was prepared and characterized by H-1 NMR, UV-vis, and elemental analysis. TEM image shows that these nanoparticles possess a narrow size distribution and 2D superlattice structures. In comparison with those nanoparticles protected by alkylthiols prepared under the same experimental condition, these superlattice structures may be attributed to the pi-pi interaction of the terminal pyrene moieties adsorbed onto the surface of gold nanoparticle. This may provide a convenient method to obtain 2D superlattice other than tedious size-selective precipitation. 
Gold nanoparticles; Self-organization; Superlattice; π-π interaction 
International Conference on Science and Technology of Synthetic Metals (ICSM 2002) 
SHANGHAI, PEOPLES R CHINA