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Multifunctional Pt( ii ) metallomesogens exhibiting luminescence and proton conductivity in the mesophase near room temperature

New asymmetrical pyridine- and isoquinoline-functionalized bis(pyrazolate) Pt( ii ) metallomesogens have been engineered and designed to exhibit multifunctional properties in terms of mesomorphism, photoluminescence and ionic conductivity near room temperature. The molecules are self-assembled in he...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2018, Vol.6 (36), p.9723-9733
Main Authors: Cuerva, Cristián, Campo, José A., Cano, Mercedes, Schmidt, Rainer, Lodeiro, Carlos
Format: Article
Language:English
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Summary:New asymmetrical pyridine- and isoquinoline-functionalized bis(pyrazolate) Pt( ii ) metallomesogens have been engineered and designed to exhibit multifunctional properties in terms of mesomorphism, photoluminescence and ionic conductivity near room temperature. The molecules are self-assembled in hexagonal columnar mesophases via Pt⋯Pt interactions, which generates a strong orange-red emission as a result of the formation of triplet metal–metal-to-ligand charge-transfer ( 3 MMLCT) excited states. Concomitantly, the hexagonal columnar mesophases open continuous nanochannels that have been used for proton conduction over a wide range of temperatures. It is also noteworthy that the luminescence typically decreases with temperature, whereas the ionic conductivity increases to values of the order of 10 −5 Ω −1 cm −1 at ca. 300 °C in the mesophase.
ISSN:2050-7526
2050-7534
DOI:10.1039/C8TC03308K