Skip to main content
. Author manuscript; available in PMC: 2014 May 15.
Published in final edited form as: Anal Bioanal Chem. 2008 Dec 7;393(4):1135–1141. doi: 10.1007/s00216-008-2521-y

Fig. 1.

Fig. 1

pH calibration data for the pH-sensitive nanoprobe. a SERS spectra of pMBA anchored to the AgIF on the submicron-diameter fiber-optic nanoprobe from pH 6.0 to pH 7.5. b The intensity of the ~1,425 cm−1 carboxylate band for pMBA varies with pH across the physiological range due to its degree of protonation/deprotonation