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Open AccessArticle

Structure of a Luminescent MOF-2 Derivative with a Core of Zn(II)-Terephthalate-Isoquinoline and Its Application in Sensing of Xylenes

1
Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México 04510, Mexico
2
Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Ixtlahuaca Km. 14.5, Tlachaloya, Toluca, Estado de México 50200, Mexico
3
Departamento de Investigación y Desarrollo, Polioles S.A. de C.V. Km. 52.5 Parque Industrial Lerma, Estado de México 52000, Mexico
*
Authors to whom correspondence should be addressed.
Crystals 2020, 10(5), 344; https://doi.org/10.3390/cryst10050344
Received: 9 April 2020 / Revised: 22 April 2020 / Accepted: 24 April 2020 / Published: 27 April 2020
(This article belongs to the Special Issue Fluorescent Complexes)
A new blue photoluminescent 2D metal–organic framework, 1, with formula {[Zn22-BDC)2(iQ)2]} has been synthesized in a high yield under solvothermal conditions by reacting Zn(II) ions with 1,4-benzenedicarboxylic acid (H2BDC) and isoquinoline (iQ) in DMF. Compound 1 was thoroughly characterized by single-crystal X-ray diffraction, solid-state cross-polarization magic-angle spinning 13C NMR, X-ray powder diffraction, scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS), and thermoanalysis. The crystal structure of 1 showed interpenetrated 2D frameworks consisting of dinuclear paddle-wheel cores Zn2; moreover, this material possessed thermostability up to 310 °C. The CPMAS 13C-NMR spectrum of 1 is consistent with the symmetry of the crystal structure. Luminescence studies showed that 1 strongly enhances its fluorescence emission in the presence of xylene isomers with a pronounced selectivity to p-xylene. View Full-Text
Keywords: MOF-2 derivative; fluorescent sensing; xylene isomers MOF-2 derivative; fluorescent sensing; xylene isomers
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MDPI and ACS Style

Rosales-Vázquez, L.D.; Bazany Rodríguez, I.J.; Hernández-Ortega, S.; Sánchez-Mendieta, V.; Vilchis-Nestor, A.R.; Cázares-Marinero, J.J.; Dorazco-González, A. Structure of a Luminescent MOF-2 Derivative with a Core of Zn(II)-Terephthalate-Isoquinoline and Its Application in Sensing of Xylenes. Crystals 2020, 10, 344.

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