Temporal Control of the Host-Guest Properties of a Calix[6]arene Receptor by the Use of a Chemical Fuel.

ABSTRACT: The host-guest interaction of a 1,3,5-trisaminocalix[6]arene receptor with N-methylisoquinolinium trifluoromethanesulfonate (K_ass of 500 ± 30 M^-1 in CD₂Cl₂) can be dissipatively driven by means of 2-cyano-2-(4'-chloro)phenylpropanoic acid used as a convenient chemical fuel. When the fuel is added to a dichloromethane solution containing the above complex, the host is induced to immediately release the guest in the bulk solution. Consumption of the fuel allows the guest to be re-uptaken by the host. The operation can be satisfactorily reiterated with four subsequent additions of fuel, producing four successive release-reuptake cycles. The percentage of the guest temporarily released in the bulk solution by the host and the time requi

SUBMITTER: Rispoli F 

PROVIDER: S-EPMC8902750 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature