Comparison in practical applications of crown ether sensor molecules containing an acridone or an acridine unit – a study on protonation and complex formation
نویسندگان
چکیده
Abstract Crown ethers containing an acridone or acridine unit are successfully applied opto- and electrochemical cation sensors. The heteroaromatic of these macrocycles can be in different forms during the applications, which have a strong influence on sensing behavior. Moreover, case acridono-macrocycles prototropic equilibrium takes place upon complexation, is effected by physicochemical characteristics. A Pb 2+ -selective acridono-18-crown-6 ether its 9-phenylacridino-analogue were used as model compounds for comparing heterocyclic units sensor molecules. Since most practical applications fluorescent hosts non-neutral aqueous medium present, studies complexation signaling carried out from aspect relationship among protonation, coordinating ability, complex stability tautomeric equilibrium. interdependence factors was found limitations using unsubstituted acridino- acridono-sensor molecules comparison with their 9-substituted-acridino-analogues discussed. This study will hopefully serve useful standpoint future development ionophore-based sensors unit.
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ژورنال
عنوان ژورنال: Journal of inclusion phenomena and macrocyclic chemistry
سال: 2021
ISSN: ['2212-1765', '0923-0750']
DOI: https://doi.org/10.1007/s10847-021-01086-2