Surface enhanced Raman spectroscopy of Rhodamine 6G on agglomerates of different-sized silver truncated nanotriangles

This reported study investigated the use of agglomerates fabricated from different-sized Ag truncated nanotriangles in highly sensitive surface enhanced Raman scattering (SERS) by employing Rhodamine 6G dye as the probe molecule. It was found that the SERS intensity of R6G was enhanced as the size of the Ag truncated nanotriangles increased. It was postulated that this phenomenon resulted from the generated hot spots and the roughness of the surface of the agglomerates. In addition, the results exhibited an independent feature on the surface plasmon resonance position. The experimental results showed that the prepared SERS substrate was able to detect R6G over a wide concentration range of 10(-5)-10(-11) M and could be used as an effective SERS substrate in trace detection. (C) 2016 Elsevier B.V. All rights reserved.