5:30 PM - 5:45 PM
▲ [13p-2C-14] Surface Enhanced Raman Scattering (SERS) Waveguide of Crystalline Organic Microrod and Bio-Sensing Application
Keywords:SERS,waveguide
One-dimensional photoluminescent nano- or micro-crystals have been used as active optical waveguiding materials. The output photoluminescence (PL) spectra and decay characteristics through the one-dimensional crystals have been intensively investigated. Raman waveguide can also provide optical signal transport by means of specific molecular interaction modes, such as vibrational and rotational modes in highly crystalline organic nano- or micro-structures. Raman waveguiding can transport multi-signals corresponding to various molecular orientations of the materials. But the waveguided Raman signals are typically very week. Therefore the waveguided Raman signals must be enhanced for applications. Surface enhanced Raman scattering (SERS) effect can be utilized for effective waveguiding of Raman signals.
Figure 1 shows the schematic illustration of the Raman and SERS waveguiding experimental setup for the hybrid TSDB/Au MR using an LCM system. The input confocal laser was movable, while the detecting position was fixed at the end of the TSDB MR as shown in Fig. 1.
The Raman characteristic peaks at 650, 1180, and 1556 cm-1 corresponding to C-Br, –CF3, and –C=C- modes, respectively, were successfully transport through a single TSDB MR, indicating Raman waveguiding. We observed the considerable increase of the Raman characteristic peaks for the TSDB MRs after attaching Au NPs, supporting the SERS effect. It was clearly observed that the SERS modes of the hybrid TSDB/Au MR could be also waveguided through the MR. We have applied the effect of SERS waveguiding to bio-sensing.
Raman and SERS waveguiding have been demonstrated by using the hybrid TSDB/Au MRs. The SERS waveguiding properties were analyzed by comparing each Raman characteristics (such as the –C=C– aromatic, –CF3, and C–Br stretching modes) of the pristine and hybrid MRs. The SERS waveguiding of the hybrid MR can be applied to remote bio-sensing.
Figure 1 shows the schematic illustration of the Raman and SERS waveguiding experimental setup for the hybrid TSDB/Au MR using an LCM system. The input confocal laser was movable, while the detecting position was fixed at the end of the TSDB MR as shown in Fig. 1.
The Raman characteristic peaks at 650, 1180, and 1556 cm-1 corresponding to C-Br, –CF3, and –C=C- modes, respectively, were successfully transport through a single TSDB MR, indicating Raman waveguiding. We observed the considerable increase of the Raman characteristic peaks for the TSDB MRs after attaching Au NPs, supporting the SERS effect. It was clearly observed that the SERS modes of the hybrid TSDB/Au MR could be also waveguided through the MR. We have applied the effect of SERS waveguiding to bio-sensing.
Raman and SERS waveguiding have been demonstrated by using the hybrid TSDB/Au MRs. The SERS waveguiding properties were analyzed by comparing each Raman characteristics (such as the –C=C– aromatic, –CF3, and C–Br stretching modes) of the pristine and hybrid MRs. The SERS waveguiding of the hybrid MR can be applied to remote bio-sensing.