Chemistry Reference
In-Depth Information
Figure 5.6 Functionalization strategies of random copolymer 3 based on a combination of
hydrogen bonding and coulombic interactions.
were functionalized subsequently via self-assembly using hydrogen bonding and
coulombic interactions, as shown in Figure 5.6.
The hydrogen bonding interactions between 2,6-diaminopyridine and
N-butylthymine were studied before and after the functionalization of the quaternary
ammonium groups with sulfonates, carboxylates, and phenolates. These coulombic
species have one, two, or three oxygen atoms that have the potential to act as hydrogen
bonding donor moieties and thus are capable of disrupting the hydrogen bonding self-
assembly between 2,6-diaminopyridine and N-butylthymine. It was found that hydrogen
bonding was independent of the nature and presence of the coulombic interactions.
These results proved that the studied hydrogen bonding interactions are orthogonal to
the coulombic interactions, and that both interactions can be used independently of
each other in the same system for noncovalent functionalization.
5.3.3. Multiple Hydrogen Bonding Interactions: Self-Sorting
on Polymers
Weck group also investigated the incorporation of multiple hydrogen bonding inter-
actions along a single polymer backbone for both random and block copolymers.
