Novel luminescent calixarene-based lanthanide materials: From synthesis and characterization to the selective detection of Fe3

• Published in: Journal of solid state chemistry Vol. 295; p. 121916
• Main Authors: Silva Lins, Ilária Martina, Daniel da Silva Fonseca, José, Lourenço da Luz, Leonis, Chojnacki, Jarosław, Júnior, Severino Alves, Barros, Bráulio Silva, Kulesza, Joanna
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01-03-2021
• Subjects: Calixarene; Coordination networks; Dinuclear complex; Fe3; Luminescence; Sensors; Dinuclear complex; Calixarene; Sensors; Coordination networks; Fe3; Luminescence
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2020.121916

Calix[n]arene-based coordination networks are an emerging class of materials with intriguing properties resulted from the presence of the cavity-like structure of the macrocycle and metallic nodes. In this work, four novel luminescent materials based on calix[4]arene-carboxylate and lanthanides (Eu3+ and Tb3+) were prepared by two synthetic approaches, solvothermal (CDA-Eu-ST) and slow diffusion (CDA-Eu-RT, CDA-Tb-RT, CTA-Tb-complex) methods. The coordination networks were characterized by PXRD, FTIR, SEM and solid-state photoluminescence, and the results indicated the formation of two different CDA-Eu-structures governed by the synthesis parameters. Single-crystal X-ray diffraction of CTA-Tb-complex revealed the formation of a new dinuclear complex of calix[4]arene-tetracarboxylate containing Na+ and Tb3+ coordinated within the lower rim of the molecule. Preliminary studies showed that CDA-Eu-RT was capable of selectively sensing Fe3+ ions in water via quenching the luminescence, demonstrating the possibility of using calix[4]arene-based platforms as efficient luminescent sensors.
Luminescent sensor based on Eu-calixarene network for the detection of Fe3+ in aqueous environment. [Display omitted]
•Novel luminescent calixarene-based materials were prepared.•X-ray crystal structure of sandwich-like complex was presented.•Luminescence quenching in the Fe3+ presence was detected.•Efficient luminescent sensor was proposed.