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7636584 
Journal Article 
Core-Shell Poly(allyamine hydrochloride)-Pyrene Nanorods Decorated with Gold Nanoparticles 
Wang, Z; Skirtach, AG; Xie, Y; Liu, M; Moehwald, H; Gao, C; , 
2011 
Yes 
Chemistry of Materials
ISSN: 0897-4756
EISSN: 1520-5002 
AMER CHEMICAL SOC 
WASHINGTON 
23 
21 
4741-4747 
English 
WOS:000296304100016 
Water-dispersible and fluorescent core-shell nanorods (NRs) consisting of covalently linked poly(allyamine hydrochloride)-pyrene (PAR-Py) were synthesized and used for fabricating hybrid organic inorganic NRs. The reaction between 1-pyrenecarboxaldehyde (Py-CHO) nanorods and PAH was driven by Schiff base formation and followed by NaBH(4) reduction, and caused 28% mass loss of Py molecules at the final stage (2 h). The final PAH-Py NRs contained 42% PAR, corresponding to a Py substitution ratio of 34.5%. They were uniform in size with a Py-CHO core (81.2 +/- 16.4 nm) and PAH shell (45.0 +/- 8.8 nm) fibrillar structure, and had a surface zeta potential of 53.7 +/- 5.1 mV. The PAH-Py NRs could survive after annealed at 80 degrees C or dispersed in ethanol, and showed good suspension stability in water. Because of the functional amino groups, the nanorods could act as nanoanchors to immobilize either positively or negatively charged gold nanoparticles, or as nanoreactors to synthesize gold and platinum nanoparticles in situ. Very small quenching of the fluorescence was achieved due to the isolation effect of the PAR layer. The method described here provides a new approach for modifying organic surfaces with nanoparticles and endowing them with multiple functions. 
gold nanoparticles; hybrids; nanorods; poly(allyamine hydrochloride); Pyrene