Reversible photodynamic chloride-selective sensor based on photochromic spiropyran.

ABSTRACT: We report here for the first time on a reversible photodynamic bulk optode sensor based on the photoswitching of a spiropyran derivative (Sp). The photoswitching of Sp induces a large basicity increase in the polymeric phase, which triggers the extraction of Cl(-) and H(+). Cl(-) is stabilized by a lipophilic chloride-selective ionophore inside the membrane, while H(+) binds with the open form of Sp and induces a spectral change, hence providing the sensor signal. The system was studied with spectroscopic and electrochemical methods.

SUBMITTER: Xie X 

PROVIDER: S-EPMC3557920 | biostudies-literature |

REPOSITORIES: biostudies-literature