Aromatic stacking and the self-assembly of perylene monoimide diester homodimers

Gultekin D. D.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, cilt.426, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 426
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.jphotochem.2022.113769
  • Dergi Adı: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Chemical Abstracts Core, Chimica, INSPEC
  • Anahtar Kelimeler: Perylene monoimide diester, Nucleation-elongation model, Self-assembly, Supramolecular polymerization, Fluorescent compounds, SUPRAMOLECULAR POLYMERS, EFFICIENT SYNTHESIS, LIQUID-CRYSTALS, PI-STACKS, DERIVATIVES, TETRAESTERS, MORPHOLOGIES, COMPLEXES, PROGRESS
  • Atatürk Üniversitesi Adresli: Evet

Özet

The self-assembly properties of two novel perylene monoimide diester homodimers have been investigated by concentration-dependent UV-Vis and H-1 NMR titration experiments and steady-state fluorescence and SEM techniques. It was found that, as a result of different positioning of the perylene monoimide diester subunits in these structures, the cooperativity and binding-models for their chain growth processes differ significantly in dichloromethane (DCM) and dimethyl sulfoxide (DMSO) due to a change in efficiency of the pi-pi stacking. The mechanism of aggregation in each case was determined by the application of Goldstein-Stryer nucleation - elongation model to the concentration-dependent data. Because of different aggregation propensities of the respective monomers in DCM, scanning electron microscopy revealed different morphologies for the assemblies.