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CAF@ZIF-8: One-Step Encapsulation of Caffeine in MOF
Abstract
Two strategies for encapsulating caffeine in ZIF-8 were carried out in this work: (1) one-step, in situ encapsulation where caffeine is added to a ZIF-8 synthesis solution and the MOF structure is formed around the entrapped molecule; and (2) ex situ encapsulation whereby caffeine is put into contact with previously synthesized or purchased ZIF-8. The products obtained were analyzed with XRD, TGA, Vis-UV, GC-MS, FTIR, (13)C NMR, and N 1s XPS to compare both encapsulation methods. Chemical and structural evidence indicated that the preferential adsorption site of caffeine molecules inside the ZIF-8 structure is near the methyl and CH groups of 2-methylimidazole ligand. These two groups interact with caffeine by van der Waals forces with methyl groups and via CH···O hydrogen bonds with C═O groups, respectively. In addition, the one-step encapsulation of caffeine in ZIF-8 produced high guest loading (ca. 28 wt % in only 2 h at 25 °C) and controlled release (during 27 days).
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Cites
Metal-organic framework materials as catalysts
Lee, J., Farha, O. K., Roberts, J., Scheidt, K. A., Nguyen, S. T., & Hupp, J. T. (2009) · Chemical Society Reviews · doi:10.1039/b807080f · Cited by 7,969
Cited by
Yusuf, V. F., Malek, N. I., & Kailasa, S. K. (2022) · ACS Omega · doi:10.1021/acsomega.2c05310 · Cited by 894
Zhuang, J., Kuo, C.-H., Chou, L.-Y., Liu, D.-Y., Weerapana, E., & Tsung, C.-K. (2014) · ACS Nano · doi:10.1021/nn406590q · Cited by 873
Advanced Porous Materials in Mixed Matrix Membranes
Cheng, Y., Ying, Y., Japip, S., Jiang, S., Chung, T., Zhang, S., & Zhao, D. (2018) · Advanced Materials · doi:10.1002/adma.201802401 · Cited by 448
Li, X., Gao, X., Ai, L., & Jiang, J. (2015) · Chemical Engineering Journal · doi:10.1016/j.cej.2015.03.127 · Cited by 382
Towards principled design of cancer nanomedicine to accelerate clinical translation
Souri, M., Soltani, M., Moradi Kashkooli, F., Kiani Shahvandi, M., Chiani, M., Shariati, F. S., Mehrabi, M. R., & Munn, L. L. (2022) · Materials Today Bio · doi:10.1016/j.mtbio.2022.100208 · Cited by 159
Metadata
- Authors
- Liédana, N., Galve, A., Rubio, C., Téllez, C., & Coronas, J.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-08-20
- Volume
- 4
- Issue
- 9
- Pages
- 5016-5021
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2330907473
- Cited by
- 410
- References
- 1
- FWCI
- 9.27
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liédana, N., Galve, A., Rubio, C., Téllez, C., & Coronas, J. (2012). CAF@ZIF-8: One-Step Encapsulation of Caffeine in MOF. ACS Applied Materials & Interfaces. https://doi.org/10.1021/am301365h
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