Molecular Tools for the Self-Assembly of Bisporphyrin Photodyads: A Comprehensive Physicochemical and Photophysical Study
                                
                                    
                                        作者:Jérémy Brandel、Ali Trabolsi、Hassan Traboulsi、Frédéric Melin、Matthieu Koepf、Jennifer A. Wytko、Mourad Elhabiri、Jean Weiss、Anne-Marie Albrecht-Gary                                    
                                    
                                        DOI:10.1021/ic802407x
                                    
                                    
                                        日期:2009.4.20
                                    
                                    Accessible and hindered phenanthroline-strapped Zn(II) porphyrin receptors exhibited suitable topography tailored to strongly and selectively bind N-1-unsubstituted imidazoles and imidazoles appended to free-base porphyrins. Distal binding was clearly driven by the formation of strong bifurcated hydrogen bonds with the phenanthroline unit of the receptors. An extensive physicochemical study emphasized the influence of bulkiness of the substrate and of the porphyrin receptor on the binding and self-assembly mechanism. Knowledge of the corresponding spectroscopic, thermodynamic, and kinetic data were of fundamental importance to elucidate and to model the photoinduced properties which occur within the self-assembled porphyrin dyads.