Skip to main content
. 2016 Nov 11;7:13437. doi: 10.1038/ncomms13437

Figure 4. Hierarchical pCBAA surface modification to attract analytes and enable drug detection in undiluted human plasma.

Figure 4

(a,b) SERS spectra of 20 μM AH and 20 μM CARB spiked in undiluted plasma (green and olive), plasma (blue) and subtracted spectra (orange and yellow) acquired with the SERS optofluidic system hierarchically modified with pCBAA brushes grafted on the mixed SAM of 3MA and initiator (20:80). (c) SERS spectra of 20 μM PHEN spiked in undiluted plasma, plasma and subtracted spectrum acquired with the SERS optofluidic system hierarchically modified with pCBAA brushes grafted on the mixed SAM of C3 and initiator (10:90). λex=785 nm, Plaser=1 mW and t=30 s with three accumulations.