Coordinatively Unsaturated Lanthanide(III) Helicates: Luminescence Sensors for Adenosine Monophosphate in Aqueous Media

Coordinatively unsaturated double‐stranded helicates [(H2L)2Eu2(NO3)2(H2O)4](NO3)4, [(H2L)2Tb2(H2O)6](NO3)6, and [(H2L)2Tb2(H2O)6]Cl6 (H2L=butanedioicacid‐1,4‐bis[2‐(2‐pyridinylmethylene)hydrazide]) are easily obtained by self‐assembly from the ligand and the corresponding lanthanide(III) salts. The...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2016-08, Vol.55 (33), p.9625-9629
Main Authors: Sahoo, Jashobanta, Arunachalam, Rajendran, Subramanian, Palani S., Suresh, Eringathodi, Valkonen, Arto, Rissanen, Kari, Albrecht, Markus
Format: Article
Language:English
Subjects:
Adenosine diphosphate
Adenosine monophosphate
AMP
Anions
Crystallography
helicates
lanthanides
Ligands
Luminescence
Metals
Quenching
Salts
Self-assembly
sensing
X-ray crystallography
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Summary:Coordinatively unsaturated double‐stranded helicates [(H2L)2Eu2(NO3)2(H2O)4](NO3)4, [(H2L)2Tb2(H2O)6](NO3)6, and [(H2L)2Tb2(H2O)6]Cl6 (H2L=butanedioicacid‐1,4‐bis[2‐(2‐pyridinylmethylene)hydrazide]) are easily obtained by self‐assembly from the ligand and the corresponding lanthanide(III) salts. The complexes are characterized by X‐ray crystallography showing the helical arrangement of the ligands. Co‐ligands at the metal ions can be easily substituted by appropriate anions. A specific luminescence response of AMP in presence of ADP, ATP, and other anions is observed. Specificity is assigned to the perfect size match of AMP to bridge the two metal centers and to replace quenching co‐ligands in the coordination sphere. One AMP is enough: A coordinatively unsaturated double‐stranded dinuclear europium(III) helicate shows adenosine monophosphate (AMP)‐specific luminescence response even in the presence of highly charged adenosine di‐ or triphosphate (ADP or ATP).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201604093