Menü

Overview

“Ligand-exchange procedure” developed in our group for external initiation of KCTP was used by the preparation of hairy particles. Monodisperse silica-core organosilica-shell particles were prepared by modified Stöber method. Surface-initiated Kumada catalyst-transfer polycondensation of poly(9,9-dioctylfluorene) (PFO) was performed from organosilica microparticles that resulted into PFO brushes with densely grafted PFO chains with a significantly enhanced propensity to adopt planar ordered conformations (β-phase).

Figure 1. Synthesis of PFO brushes via SI-KCTP (top); florescent micrograph (a), UV-vis (b) and emission spectra (c) of the PFO hairy particles (red lines) and PFO detached from the particles (black line) dissolved in THF.

References

  • Khanduyeva, N. ; Senkovsky, V. ; Beryozkina, T. ; Bocharova, V. ; Simon, F. ; Nitschke, M. ; Stamm, M. ; Grötzschel, R. ; Kiriy, A. Grafting of poly(3-hexylthiophene) from poly(4-bromostyrene) films by kumada catalyst-transfer polycondendation: Revealing of the composite films structure Macromolecules 41 (2008) 7383-7389
  • Senkovsky, V. ; Tkachov, R. ; Beryozkina, T. ; Komber, H. ; Oertel, U. ; Horecha, M. ; Bocharova, V. ; Stamm, M. ; Gevorgyan, S. A. ; Krebs, F.C. ; Kiriy, A. Hairy poly(3-hexylthiophene) particles prepared via surface-initiated kumada catalyst-transfer polycondensation Journal of the American Chemical Society 131 (2009) 16445-16453
  • Beryozkina, T. ; Boyko, K. ; Khanduyeva, N. ; Senkovsky, V. ; Horecha, M. ; Oertel, U. ; Simon, F. ; Stamm, M. ; Kiriy, A. Grafting of polyfluorene by surface-initiated suzuki polycondensation Angewandte Chemie - International Edition 48 (2009) 2695-2698