title: Concatenation of two molecular switches via a Fe(II)/Fe(III) couple.
abstract: [reaction: see text] Modulation of the fluorescein fluorescence in the presence of spiropyran and ferric ion by light was observed. Such fluorescence modulation was due to the low oxidation potential of complex MC.Fe(2+), which made the electron transfer from MC.Fe(2+) to Flu(+)()(*)() thermodynamically favorable. As a result, the communication between two molecular switches based on fluorescein and spiropyan, respectively, was realized via the reversible Fe(III)/Fe(II) redox couple. The communicating behavior corresponds well to the function of an INHIBIT logic gate.
authors.affiliation: Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Guo
authors.forename: Deqing
authors.initials: D
authors.lastname: Zhang
authors.forename: Hairong
authors.initials: H
authors.lastname: Tao
authors.forename: Daoben
authors.initials: D
authors.lastname: Zhu