Abstract:
One-dimensional (1-D) mixed stack charge transfer (CT) nanostructures, composed
of alkyl tetrathiafulvalene dicarboxylate dipotassium salt derivatives (dbTTFS/ChdbTTFS)
and unsymmetrical, dodecyl substituted naphthalene diimide (NDI-Cat)
amphiphiles were constructed via non-covalent co-assembly process. Detailed
spectroscopic measurements revealed efficient co-facial assembly between donor (D,
dbTTFS/ Ch-dbTTFS) and acceptor (A, NDI-Cat) amphiphiles to form 1:1
superamphiphiles. NMR spectroscopy measurements provided insights into the face to
face orientation of the D and A molecules in their co-assembly. This efficient D-A CT coassembly
resulted in strong red shifted CT absorption in the near infra-red (NIR, 825 nm)
region. Furthermore, two probe electrical measurements on these CT-nanostructures
showed that they are semiconducting in nature and can further be useful for
supramolecular electronics.
