Abstract
Abstract Here, we report a facile strategy for the preparation of polymer shell/gold nanocomposites with enhanced fluorescence. The nanocomposites were synthesized using two main steps. First, gold nanoparticles were prepared via a butenoic acid reduction method, which directly functionalized the nanoparticle surfaces with vinyl groups. The gold nanoparticle surfaces were then encapsulated with polymer shells via a simple free radical polymerization of acrylic acid monomer. The polymer shell thickness could be controlled by varying the amount of acrylic acid used in the polymerization. An enhancement in fluorescence was observed when a fluorescent conjugated polymer was assembled on the shell surfaces. Interestingly, this fluorescence enhancement effect was pH-dependent, because of the swelling of the polymer shells that occurred as the pH was increased.
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