A Porphyrin‐Related Macrocycle with an Embedded 1,10‐Phenanthroline Moiety: Fluorescent Magnesium(II) Ion Sensor

Abstract

Room for accommodation: A novel porphyrin-related macrocycle was constructed by replacement of the dipyrromethene unit with a 1,10-phenanthroline moiety. This macrocycle is capable of complexation and fluorescent detection of Mg2+ with high selectivity over other physiologically relevant metal ions such as Na+, K+, and Ca2+. It functions well as a fluorescent sensor for Mg2+ even in HEPES buffered aqueous DMSO solution (pH 7.4).