title: Photodynamic ion sensor systems with spiropyran: photoactivated acidity changes in plasticized poly(vinyl chloride).
abstract: We aim to introduce photoactivated optical ion sensors based on a triggered ion exchange process as novel dynamic tools. The quantification of the acidity change upon photoactivation of spiropyran within an organic membrane phase during photoexcitation is described here for the first time, suggesting a large pK(a) change of more than 6 orders of magnitude.
authors.affiliation: University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva 4, Switzerland. g.mistlberger@gmail.com
authors.forename: Günter
authors.initials: G
authors.lastname: Mistlberger
authors.forename: Gastón A
authors.initials: GA
authors.lastname: Crespo
authors.forename: Xiaojiang
authors.initials: X
authors.lastname: Xie
authors.forename: Eric
authors.initials: E
authors.lastname: Bakker