Abstract:
: The synthesis of three cyano-substituted divinylene π-
gelators is reported. The modulation of the color is achieved by placing
the cyano groups in appropriate position of the conjugated backbone,
thus modulating the donor−acceptor interaction. Variable-temperature
UV−vis data have been utilized to investigate the self-assembly of the
gelators 1−3 that is governed by a cooperative mechanism. A complete
set of photophysical parameters (ΦF,τ, kr and knr) demonstrate the role
of the molecular aggregation in enhanced emission upon self-assembly.
