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. 2016 Nov 11;7:13437. doi: 10.1038/ncomms13437

Figure 5. Hierarchical pCBAA surface modification with probing molecules to enable pH and fructose detection in undiluted human plasma.

Figure 5

(a) SERS spectra of 4MBA responding to pH-adjusted undiluted human plasma flowed over the hierarchically modified substrate with pCBAA grafted on the mixed SAM of 4MBA and initiator (5:95). (b) SERS spectra of 4MPBA responding to undiluted human plasma and plasma spiked with 5 mM fructose, flowed over the hierarchically modified substrate with pCBAA grafted on the mixed SAM of 4MPBA and initiator (5:95). λex=785 nm, Plaser=1 mW and t=30 s with a single accumulation.