Nano-scale self-assembly impeded by CH⋯π interaction in block selective solvents in the case of oligostyrene-perylenediimide-oligostyrene (coil-rod-coil) molecule

- Oligostyrene-perylenediimide-oligostyrene coil-rod-coil molecule (PS-PTCDI-PS).
- Does not show self assembly of PTCDI in PS-selective solvents.
- Extended conformation of PS leads to C-H⋯π interaction between phenyl C-H and PTCDI.
- C-H⋯π interaction prevents self assembly of PTCDI.
- Collapse of PS coil in solvent mixtures leads to self assembly.