Département de chimie moléculaire

Three protocols were performed to incorporate Au nanoparticles (AuNPs) into electrospun nanofibers of poly(acrylonitrile-co-acrylic acid) (PAN-co-PAA), namely, (1) direct electrospinning AuNPs/PAN-co-PAA/DMF colloid soln., (2) in situ redn. of the chelated Au ions in the electrospun Au salt/PAN-co-PAA nanofibers by NaBH4, and (3) further electroless-plating of the in situ reduced AuNPs-loaded nanofibers. The morphologies of the AuNPs-loaded nanofibers were characterized by the field emission SEM (FE-SEM) and the TEM. As prepd. AuNPs-loaded nanofibers were used to immobilize tris(2,2'-bipyridyl)ruthenium(II) [Ru(bpy)3]2+, to form the ECL sensors. The dramatically enhanced solid-state electrochem. and ECL performance could be feasibly achieved by the incorporation of AuNPs into the nanofibers. Also, the enhanced effect depended on the AuNPs assembly method, which resulted in the different electroconductive and catalytic abilities. [on SciFinder(R)]