Fig. 20.
(a) Chemical structure of 105 and its reaction with H2S (left); absorption spectra of 105 (10 μM) in the presence of 100 μM analytes upon 5 min incubation (right). (b) The sensing mechanism (left) and fluorescence images (right) of probe 106 for Cys/Hcy and Cys. (a) and (b) are adapted with permission from ref. 189 and 190. Copyright 2013 Elsevier, 2015 Royal Society of Chemistry, respectively.