Coordinatively Unsaturated Lanthanide(III) Helicates: Luminescence Sensors for Adenosine Monophosphate in Aqueous Media |
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| Authors: | Jashobanta Sahoo Rajendran Arunachalam Dr. Palani S. Subramanian Dr. Eringathodi Suresh Dr. Arto Valkonen Prof. Dr. Kari Rissanen Prof. Dr. Markus Albrecht |
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| Affiliation: | 1. Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Academy of Scientific and Innovative Research (AcSIR), Bhavnagar, Gujarat, India;2. University of Jyvaskyla, Department of Chemistry, Nanoscience Center, University of Jyvaskyla, Finland;3. Institut für Organische Chemie, RWTH Aachen University, Aachen, Germany |
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| Abstract: | 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. |
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| Keywords: | adenosine monophosphate helicates lanthanides luminescence sensing |
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