Synthesis of Binaphthyl-Based Push-Pull Chromophores with Supramolecularly Polarizable Acceptor Ends

Abstract

We report on the design and synthesis of new enantiopure binaphthyl derivatives in which electron-donating and electronwithdrawing substituents are placed in direct conjugation, to create push-pull dyes potentially active for NLO applications. The dyes, unprecedentedly, extend their -bridge from the 3,3 positions of the binaphthyl units and incorporate as acceptors 1,3-dicarbonyl and tetrafluorobenzene units, useful for further supramolecular polarization of the chiral dyes.

Synthesis and Optical Properties of a Series of Push-Pull Dyes Based on Pyrene as the Electron Donor

“…The weakest electron acceptors were determined as being EA1 and EA2 [ 107 , 108 ]. Notably, EA1 is rarely used for the design of push-push dyes due to the weak electronic delocalization that this electron acceptor involves [ 87 , 109 , 110 , 111 ].…”

Electric-field induced nonlinear optical materials based on a bipolar copper (I) complex embedded in polymer matrices

“…Additionally they should be transparent in the spectral range of laser operation, photoand thermally stable etc. [1][2][3]. Among the most promising materials for this purpose very promising seem to be organic chromophores [4].…”