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Gomez-Vega J, Vasquez-Cornejo A, Juárez-Sánchez O, Corona-Martínez DO, Ochoa-Terán A, López-Gastelum KA, Sotelo-Mundo RR, Santacruz-Ortega H, Gálvez-Ruiz JC, Pérez-González R, Lara KO. Thiourea-Based Receptors for Anion Recognition and Signaling. ACS OMEGA 2024; 9:4412-4422. [PMID: 38313514 PMCID: PMC10832000 DOI: 10.1021/acsomega.3c06861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 02/06/2024]
Abstract
This work reports on two thiourea-based receptors with pyridine and amine units including 1-naphthyl (MT1N) and 4-nytrophenyl (MT4N) as signaling units. For both compounds, their affinity and signaling ability toward various anions of different geometry and basicity in DMSO were studied using UV-vis, fluorescence, and 1H NMR techniques. Anion recognition studies revealed that both MT1N and MT4N have, in general, high affinities toward basic anions. In this regard, a higher acidity of the MT4N receptor was demonstrated. Furthermore, MT4N has a higher affinity for fluoride (log K1 = 5.98) than for the other anions and can effectively detect it through colorimetric changes that can be monitored by the UV-vis technique. The interaction between receptors and anions mainly involves the hydrogens of the amino and thiourea groups of the former. Complementary single-crystal X-ray diffraction studies and molecular modeling at the DFT level were also performed.
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Affiliation(s)
- Jancarlo Gomez-Vega
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Adrian Vasquez-Cornejo
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Octavio Juárez-Sánchez
- Departamento
de Investigación en Física, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - David O. Corona-Martínez
- Departamento
de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Adrián Ochoa-Terán
- Centro
de Graduados e Investigación en Química, Instituto Tecnológico de Tijuana, Blvd. Industrial S/N CP, 22510 Tijuana, Baja California, Mexico
| | - Karla A. López-Gastelum
- Laboratorio
de Estructura Biomolecular, Centro de Investigación en Alimentación
y Desarrollo, A. C., Gustavo Enrique Astiazaran
Rosas, No. 46. CP, 83304 Hermosillo, Sonora, Mexico
| | - Rogerio R. Sotelo-Mundo
- Laboratorio
de Estructura Biomolecular, Centro de Investigación en Alimentación
y Desarrollo, A. C., Gustavo Enrique Astiazaran
Rosas, No. 46. CP, 83304 Hermosillo, Sonora, Mexico
| | - Hisila Santacruz-Ortega
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Juan Carlos Gálvez-Ruiz
- Departamento
de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Refugio Pérez-González
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Karen Ochoa Lara
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
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