title: Enantioselective extraction mediated by a chiral cavitand-salen covalently assembled on a porous silicon surface.
abstract: 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%).
authors: Dipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125, Catania, Italy. andrea.pappalardo@unict.it giuseppe.trusso@unict.it.
authors: Alessandro
authors: A
authors: D'Urso
authors: Cristina
authors: C
authors: Tudisco
authors: Francesco P
authors: FP
authors: Ballistreri
authors: Guglielmo G
authors: GG
authors: Condorelli
authors: Rosalba
authors: R
authors: Randazzo
authors: Gaetano A
authors: GA
authors: Tomaselli
authors: Rosa M
authors: RM
authors: Toscano
authors: Giuseppe
authors: G
authors: Trusso Sfrazzetto
authors: Andrea
authors: A
authors: Pappalardo
mesh_terms: D001966:Bromine / Q000737:chemistry*; D002942:Circular Dichroism; D004988:Ethers, Cyclic / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D056951:Photoelectron Spectroscopy; D016062:Porosity; D000644:Quaternary Ammonium Compounds / Q000737:chemistry / Q000302:isolation & purification*; D012118:Resorcinols / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D013237:Stereoisomerism; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D004988:Ethers, Cyclic; D000644:Quaternary Ammonium Compounds; D012118:Resorcinols; C442939:cavitand; D014867:Water; D001966:Bromine; D012825:Silicon