A Photostable 1D Ruthenium−Zinc Coordination Polymer as a Multimetallic Building Block for Light Harvesting Systems

A luminescent ruthenium complex bearing two 2,6‐di(quinolin‐8‐yl)‐pyridine carboxylic acid (dqpCOOH) ligands has been successfully synthesised and fully characterised. The new metalloligand has been coordinated to zinc ions through the terminal carboxylate groups using a one‐step solvothermal method...

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Bibliographic Details
Published in:ChemPhotoChem 2022-05, Vol.6 (5), p.n/a
Main Authors: Hennessey, Seán, Burke, Christopher S., González‐Gómez, Roberto, Sensharma, Debobroto, Tong, Wenming, Amal, Kathalikkattil, Cherian, Cucinotta, Fabio, Schmitt, Wolfgang, Keyes, Tia E., Farràs, Pau
Format: Article
Language:English
Subjects:
artificial photosynthesis
coordination polymers
light harvesting
metal–organic polymers
photostability
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Summary:A luminescent ruthenium complex bearing two 2,6‐di(quinolin‐8‐yl)‐pyridine carboxylic acid (dqpCOOH) ligands has been successfully synthesised and fully characterised. The new metalloligand has been coordinated to zinc ions through the terminal carboxylate groups using a one‐step solvothermal method, to give a multimetallic photoactive 1D coordination polymer, Ru−(dqpCOO)−Zn−(OOCH)2. Through use of X‐ray crystallography, advanced microscopy techniques as well as photophysical studies, we have extensively characterised the coordination polymer. The optical properties of the ruthenium complex and corresponding coordination polymer show that the material experiences a dramatic increase in photostability compared to the free parent metalloligand, in solution. Electrochemical measurements of the coordination polymer also confirm the RuII/RuIII redox couple is maintained in the polymeric network. The development of this material gives a new strategy in the design of novel photoactive materials as multimetallic building blocks for their use in light‐based applications. Teamwork makes the dream work: Synthesis of a linear, photoactive ruthenium complex has led to the fabrication and crystal structure of a 1D coordination polymer linked between the metalloligand and zinc ions. The coordination polymer exhibits exceptional photostability in comparison to its monomer counterpart. This new metalloligand offers a fresh design strategy for the development of new photoactive supramolecular architectures.
ISSN:2367-0932
2367-0932
DOI:10.1002/cptc.202100299