1. Dong, H.F., Zhu, Z., Ju, H.X. & Yan, F. Triplex signal amplification for electrochemical DNA biosensing by coupling probe-gold nanoparticles-graphene modified electrode with enzyme functionalized carbon sphere as tracer. Biosens Bioelectron 33, 228-232(2012).
6. Kruger, C., Agarwal, S. & Greiner, A. Stoichiometric functionalization of gold nanoparticles in solution through a free radical polymerization approach. J Am Chem Soc 130, 2710-+ (2008).