Luminescent lanthanide mixed N-phthaloylglycinate and terephthalate coordination polymers: Structural and optical properties.

Autor: Arruda JG; Departamento de Química, Universidade Federal da Paraíba, João Pessoa, PB, Brazil., Faustino WM; Departamento de Química, Universidade Federal da Paraíba, João Pessoa, PB, Brazil., Pesci RBP; Departamento de Química, Universidade Federal da Paraíba, João Pessoa, PB, Brazil., Miranda VM; Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil., Deflon VM; Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil., Brito HF; Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil., Costa IF; Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil., Terraschke H; Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, Kiel, Germany., Teotonio EES; Departamento de Química, Universidade Federal da Paraíba, João Pessoa, PB, Brazil.; Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, Kiel, Germany.
Jazyk: angličtina
Zdroj: Luminescence : the journal of biological and chemical luminescence [Luminescence] 2024 Jan; Vol. 39 (1), pp. e4601. Date of Electronic Publication: 2023 Oct 11.
DOI: 10.1002/bio.4601
Abstrakt: A new class of lanthanide mixed-carboxylate ligands compounds with formula {[Ln 2 (phthgly) 4 (bdc)(H 2 O) 6 ]·(H 2 O) 4 } ∞ , labelled as Ln 3+ : Eu (1) and Gd (2) coordination polymers (CP) were synthesized under mild reaction conditions between lanthanide nitrate salts and a solution of N-phthaloylglycine (phthgly) and terephthalic (bdc) ligands. The (1) and (2) coordination polymers were formed by symmetric binuclear units, in which phthgly and bdc carboxylate ligands are coordinated to the lanthanide ions by different coordination modes. Surprisingly, all organic ligands participate in hydrogen bonding interactions, forming an extremally rigid crystalline structure. The red narrow emission bands from the 5 D 0 → 7 F J transitions of the Eu 3+ ion show a high colour purity. The intramolecular energy transfer process from L→Eu 3+ ion has been discussed. The experimental intensity parameters (Ω 2,4 ) reflect lower angular distortion and polarizability of the chemical environment around the metal ion compared with other Eu 3+ compounds reported in the literature. This novel class of coordination polymer offers a more attractive platform for developing luminescent functional materials for different applications.
(© 2023 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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