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| Title: | Differential adsorption of L- and D-lysine on achiral MFI zeolites as determined by synchrotron X-ray powder diffraction and thermogravimetric analysis | Authors: | Chen, T Huang, B Day, S Tang, CC Tsang, SCE Wong, KY Lo, TWB |
Issue Date: | 13-Jan-2020 | Source: | Angewandte chemie international edition, 13 Jan. 2020, v. 59, no. 3, p. 1093-1097 | Abstract: | Reported here is the first crystallographic observation of stereospecific bindings of l- and d-lysine (Lys) in achiral MFI zeolites. The MFI structure offers inherent geometric and internal confinement effects for the enantiomeric difference in l- and d-Lys adsorption. Notable differences have been observed by circular dichroism (CD) spectroscopy and thermogravimetric analysis (TGA). Distinct l- and d-Lys adsorption behaviours on the H-ZSM-5 framework have been revealed by the Rietveld refinement of high-resolution synchrotron X-ray powder diffraction (SXRD) data and the density-functional theory (DFT) calculations. Despite demonstrating the approach for l- and d-Lys over MFI zeolites at an atomistic resolution, the differential adsorption study sheds light on the rational engineering of molecular interaction(s) with achiral microporous materials for chiral separation purposes. | Keywords: | Chirality Circular dichroism Materials science Structure elucidation X-ray diffraction |
Publisher: | Wiley-VCH | Journal: | Angewandte chemie international edition | ISSN: | 1433-7851 | EISSN: | 1521-3773 | DOI: | 10.1002/anie.201909352 | Rights: | © 2020 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim This is the peer reviewed version of the following article: Chen, T., Huang, B., Day, S., Tang, C. C., Tsang, S. C. E., Wong, K. Y., & Lo, T. W. B. (2020). Differential Adsorption of l‐and d‐Lysine on Achiral MFI Zeolites as Determined by Synchrotron X‐Ray Powder Diffraction and Thermogravimetric Analysis. Angewandte Chemie, 132(3), 1109-1113, which has been published in final form at https://doi.org/10.1002/anie.201909352. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| Appears in Collections: | Journal/Magazine Article |
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| a0629-n02_Manuscript_toprint.pdf | Pre-Published version | 1.58 MB | Adobe PDF | View/Open |
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