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New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence.

ABSTRACT: Europium (III) luminescent chelates possess intrinsic photophysical properties that are extremely useful in a wide range of applications. The lack of examples of coumarin-based lanthanide complexes is mainly due to poor photo-sensitization attempts. However, with the appeal of using such a versatile scaffold as antenna, especially in the development of responsive molecular probes, it is worth the effort to research new structural motifs. In this work, we present a series of two new tris coumarin-dipicolinate europium (III) complexes, specifically tailored to be either a mono or a dual emitter, tuning their properties with a simple chemical modification. We also encountered a rich chemical speciation in solution, studied in detail by means of paramagnetic NMR and emission spectroscopy.

SUBMITTER: Di Pietro S

PROVIDER: S-EPMC7956443 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence.

Di Pietro Sebastiano S Iacopini Dalila D Moscardini Aldo A Bizzarri Ranieri R Pineschi Mauro M Di Bussolo Valeria V Signore Giovanni G

Molecules (Basel, Switzerland) 20210226 5

Europium (III) luminescent chelates possess intrinsic photophysical properties that are extremely useful in a wide range of applications. The lack of examples of coumarin-based lanthanide complexes is mainly due to poor photo-sensitization attempts. However, with the appeal of using such a versatile scaffold as antenna, especially in the development of responsive molecular probes, it is worth the effort to research new structural motifs. In this work, we present a series of two new tris coumarin ...[more]

PMID: 33652775

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