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High La<sup>III</sup> Affinity of a Bis(spirobenzopyran) Azacrown Ether and Photoinduced Switching of its Ion Selectivity between Multivalent and Monovalent Metal Ions
50
Citations
9
References
1997
Year
Inorganic ChemistryChemical EngineeringIon SelectivityAzacrown EtherEngineeringBiochemistryPhotochemistrySelectivity ControlNatural SciencesHeterocyclicSpiropyran FormsMonovalent Metal IonsMolecular SwitchOrganic ChemistryChemistryHeterocycle ChemistryCation Sensing
The transition between the merocyanine and spiropyran forms switches the selectivity of the bis(spiropyran) azacrown ether 1 from La3+ to K+ [Eq. (1)]. Thus, 1 offers much greater possibilities for selectivity control between multi- and monovalent metal ions than the corresponding unsubstituted azacrown ether.
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