1 research outputs found
Superstructures of Diketopyrrolopyrrole Donors and Perylenediimide Acceptors Formed by Hydrogen-Bonding and 蟺路路路蟺 Stacking
Synthetic supramolecular systems
can provide insight into how complex
biological systems organize as well as produce self-organized systems
with functionality comparable to their biological counterparts. Herein,
we study the assembly into superstructures of a system composed of
diketopyrrolopyrrole (DPP) donors with chiral and achiral side chains
that can form triple hydrogen bonds with perylene diimide (PDI) acceptors
into superstructures. The homoaggregation of the individual components
as well as the heteroaggregate formation, as a result of 蟺路路路蟺
stacking and H-bonding, were studied by variable-temperature UV/vis
and CD spectroscopies and electronic structure theory calculations.
It was found that, upon cooling, the achiral PDIs bind to disordered
DPP stacks, which drives the formation of chiral superstructures.
A new thermodynamic model was developed for this unprecedented assembly
that is able to isolate the thermodynamic binding parameters (螖<i>H</i>掳, 螖<i>S</i>掳) for all the different
noncovalent contacts that drive the assembly. This novel assembly
as well as the quantitative model described in this work may help
researchers develop complex self-assembled systems with emergent properties
that arise as a direct result of their supramolecular structures