Enantioselective Extraction Mediated by a Chiral Cavitand-Salen Covalently Assembled on a Porous Silicon Surface

A chiral organic-inorganic hybrid material, based on a porous silicon surface functionalized with a chiral cavitand, was designed and synthesized. The affinity of this device in water toward a bromine-marked alkyl-ammonium salt has been evaluated using XPS detection. UV and CD measurements highlight the enantioselective extraction from a racemic mixture in water of the S-enantiomer of the selected guest (ee >= 80%).

A chiral organic–inorganic hybrid material, based on a porous silicon surface functionalized with a chiral cavitand, was designed and synthesized. The affinity of this device in water toward a bromine-marked alkyl-ammonium salt has been evaluated using XPS detection. UV and CD measurements highlight the enantioselective extraction from a racemic mixture in water of the S-enantiomer of the selected guest (ee Z 80%).

A chiral hybrid organic-inorganic material based on porous silicon surface functionalized with a chiral cavitand was designed and synthesized. The affinity of this device in water toward a bromine-marked alkyl-ammonium salt has been evaluated using XPS detection. UV and CD measurements highlighted the enantioselective extraction from a racemic mixture in water of the S-enantiomer of the selected guest (e.e. ≥ 80%).