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  Toward efficient synthesis of porous all-carbon-based nanocomposites for enantiospecific separation

Perovic, M., Aloni, S. S., Zhang, W., Mastai, Y., Antonietti, M., & Oschatz, M. (2021). Toward efficient synthesis of porous all-carbon-based nanocomposites for enantiospecific separation. ACS Applied Materials & Interfaces, 13(20), 24228-24237. doi:10.1021/acsami.1c02673.

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 Creators:
Perovic, Milena1, Author              
Aloni, Sapir Shekef, Author
Zhang, Wuyong1, Author              
Mastai, Yitzhak, Author
Antonietti, Markus2, Author              
Oschatz, Martin1, Author              
Affiliations:
1Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2364733              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: Chiral separation, ionic liquid, enantioselective separation, porous carbon, chrial carbon, chiral composite
 Abstract: Chiral separation and asymmetric synthesis and catalysis are crucial processes for obtaining enantiopure compounds, which are especially important in the pharmaceutical industry. The efficiency of the separation processes is readily increased by using porous materials as the active material can interact with a larger surface area. Silica, metal–organic frameworks, or chiral polymers are versatile porous materials that are established in chiral applications, but their instability under certain conditions in some cases requires the use of more stable porous materials such as carbons. In addition to their stability, porous carbon materials can be tailored for their ability to adsorb and catalytically activate different chemical compounds from the liquid and the gas phase. The difficulties imposed by the functionalization of carbons with chiral species were tackled in the past by carbonizing chiral ionic liquids (CILs) together with a template to create pores, which results in the entire body of a material that is built up from the precursor. To increase the atomic efficiency of ionic liquids for better economic utilization of CILs, the approach presented here is based on the formation of a composite between CIL-derived chiral carbon and a pristine carbon material obtained from carbohydrate precursors. Two novel enantioselective carbon composite materials are applied for the chiral recognition of molecules in the gas phase, as well as in solution. The enantiomeric ratio of the l-composite for phenylalanine from the solution was (L/D) = 8.4, and for 2-butanol from the gas phase, it was (S/R) = 1.3. The d-composite showed an opposite behavior, where the enantiomeric ratio for phenylalanine was (D/L) = 2.7, and for 2-butanol from the gas phase, it was (R/S) = 1.3.

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Language(s): eng - English
 Dates: 2021-05-122021
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acsami.1c02673
BibTex Citekey: doi:10.1021/acsami.1c02673
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Title: ACS Applied Materials & Interfaces
  Other : ACS Applied Materials and Interfaces
  Abbreviation : ACS Appl. Mater. Interfaces
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 13 (20) Sequence Number: - Start / End Page: 24228 - 24237 Identifier: ISSN: 1944-8244