| 초록 |
Recently, gold cores with silica shells are the most widely studied due to their potential applications to research areas ranging from catalysis and optical devices to immunoassay labeling and surface enhanced Raman spectroscopy. Herein, Many hot-spots on the surface of gold-nanoflowers (AuNFs) manufacturing has increased for surface-enhanced raman scattering (SERS). These AuNFs were easily manufactured through the reduction of HAuCl4 with ascorbic acid in the presence of chitosan polymers. As-prepared AuNFs were successfully employed as an active SERS substrate in the sensitive detection of 2-chlorothiophenol (10-4 M). Additionally, Silica coated AuNFs offers many advantages in SERS-based biological sensing applications due to their high bio-stability. Silica layer was capped on the surface of AuNFs through the sol-gel method. The composite particles were characterized by SEM, TEM, UV-vis and Raman spectroscopy. |
