A New Quinone Based Fluorescent Probe for High Sensitive and Selective Detection of Biothiols and Its Application in Living Cell Imaging

Figure 3

Fluorescence responses of DDQ to different substances. (a) Fluorescence responses of DDQ (10 μM) to different amino acids (Cys is 0.2 mM, Hcy is 0.1 mM, and GSH and nonthiol-containing amino acids are 1 mM). (b) The black and red histogram represent the fluorescence intensity of DDQ (10 μM) in the presence of various alalytes (1 mM) before and after addition of Hcy (0.1 mM).

(a)

(b)