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Article Dans Une Revue ACS Applied Materials & Interfaces Année : 2020

Chiral Macroporous MOF Surfaces for Electroassisted Enantioselective Adsorption and Separation

Duangkamon Suttipat
  • Fonction : Auteur
Sopon Butcha
Sunpet Assavapanumat
  • Fonction : Auteur
Thana Maihom
  • Fonction : Auteur
Bhavana Gupta
Neso Sojic
  • Fonction : Auteur
  • PersonId : 977368
Chularat Wattanakit

Résumé

The development of surfaces with chiral features is a fascinating challenge for modern material science, especially when they are used for chiral separation technologies. In this contribution, the design of hierarchically struc-tured chiral macroporous ZIF-8 electrodes is presented. They are elaborated by an electrochemical deposition-dissolution technique, based on the electrodeposition of metal through a colloidal crystal template, followed by controlled electrooxidation. This generates locally metal cations, which can interact with a chiral ligand present in solution to form Metal-Organic Frameworks (MOFs). The macroporous structure facilitates the access of the chiral recognition sites, located in the mesoporous MOF and thus helps to overcome mass transport limitations. The efficiency of the designed functional materials for chiral adsorption and separation can be fine-tuned by applying an adjustable electric potential to the electrode surfaces. This hierarchical chiral ZIF-8 structure was deposited at the walls of a microfluidic device and used as a stationary phase for enantioselective separation. The potential-controlled interaction between the stationary phase and the chiral analytes allows baseline separation of two enantiomers. This opens up interesting perspectives for using hierarchically structured chiral MOF as an efficient material for the selective adsorption and separation of chiral compounds.

Domaines

Chimie
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Dates et versions

hal-02938171 , version 1 (14-09-2020)

Identifiants

Citer

Duangkamon Suttipat, Sopon Butcha, Sunpet Assavapanumat, Thana Maihom, Bhavana Gupta, et al.. Chiral Macroporous MOF Surfaces for Electroassisted Enantioselective Adsorption and Separation. ACS Applied Materials & Interfaces, 2020, 12 (32), pp.36548-36557. ⟨10.1021/acsami.0c09816⟩. ⟨hal-02938171⟩
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