File Name : sfig.1.tiff
Caption : sfigure 1. normal raman (black) and sers spectra of p-mt measured at different position at the laser intensities of 4 (orange), 40 (green) and 400 (purple) w/mm2 in the sample observed in fig. 2. ethanol was dried, and the measurements were performed under atmospheric condition. the raman peaks from ph-co and co were similarly observed.
File Name : sfig.2.tiff
Caption : sfigure 2. (a) extinction spectrum of agnp array used for “off-resonant” sers measurement. the extinction peak was around 750 nm. (b) sers spectrum of p-mt measured under “off-resonant” condition. 532 nm excitation was illuminated on p-mt on the agnp array shown in sfig. 2(a). the laser intensities were 4 (orange), 40 (green) and 400 (purple) w/mm2. the chemical transformation was not clearly observed at 4 w/mm2 although the peaks were observed at 1580 and 1690 cm-1 at the same intensity in sfig. 1. this is due to the less coupling efficiency as plasmons in the case of “off-resonant” condition.
File Name : sfig.3.tiff
Caption : sfigure 3. sers spectra (2600-3300 cm-1) of 1-bt measured at ascending the laser intensity of 4, 40 and 400 w/mm2, afterwards, descending the laser intensity of 40 and 4 w/mm2. the measuring time was 150 s, and the cumulated number is 2.
File Name : sfig.4.tiff
Caption : sfigure 4. growth of raman peak at 1590 cm-1 with exposure time. the laser intensity was 185 w/mm2. each measuring time was 10 s until 60 s and 30 s from 60 s to 1260 s.