Stereochemical and steric control of the relative spatial arrangement of the chromophoric units in multichromophoric systems offers an interesting strategy for raising unusual and appealing light‐induced emission states. To explore and exploit this strategy, a series of conformationally restricted boron–dipyrromethene (BODIPY) dimers were designed by using tartaric acid as a symmetrical connector between the boron atoms of the dyes. The variety of stereoisomeric forms available for this bis(hydroxy acid) allows the relative spatial orientation of the chromophoric units in the dimer to be modified, which thus opens the door to modulation of the photophysical and chiroptical properties of the new bichromophoric systems. Chromophore alkylation introduces an additional level of control through distance‐dependent steric interactions between the BODIPY units in the dimer, which also modulates their relative spatial disposition and properties.
Chemistry - A European Journal – Wiley
Published: Jan 12, 2018
Keywords: ; ; ; ;
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