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    Université de Fribourg

    Facile synthesis of a high molecular weight amphiphilic aramid–ROMP block copolymer

    Badoux, Michael ; Drechsler, Susanne ; Pal, Subhajit ; Kilbinger, Andreas F. M.

    In: Macromolecules, 2017, vol. 50, no. 23, p. 9307–9314

    Herein we report the facile synthesis of an amphiphilic rod–coil block copolymer obtained by the coupling of an amine-terminated poly(dimethylpropylamine norbornene imide) (PDMAPNI) and a pentafluorophenol ester-terminated poly(dimethoxybenzyl p-aminobenzoate) (PAram). Postpolymerization amide N- deprotection of the block copolymer yielded a strongly aggregating water-soluble rod– coil...

    Université de Fribourg

    Telechelics based on catalytic alternating ring-opening metathesis polymerization

    Pal, Subhajit ; Alizadeh, Mahshid ; Kilbinger, Andreas F. M.

    In: ACS Macro Letters, 2019, vol. 8, no. 10, p. 1396–1401

    We describe a protocol to synthesize alternating telechelic ROMP copolymers of 7- oxa-norbornene derivatives and cycloalkenes under catalytic conditions. These copolymers were synthesized using Grubbs’ second-generation catalyst. The sterically less hindered backbone double bonds of the resulting alternating copolymers facilitate the chain transfer (secondary metathesis) reactions. In the ...

    Université de Fribourg

    Functional metathesis catalyst through ring closing enyne metathesis: one pot protocol for living heterotelechelic polymers

    Pal, Subhajit ; Lucarini, Fiorella ; Ruggi, Albert ; Kilbinger, Andreas F. M.

    In: Journal of the American Chemical Society, 2018, vol. 140, no. 9, p. 3181–3185

    Enyne ring closing metathesis has been used to synthesize functional group carrying metathesis catalysts from a commercial (Ru-benzylidene) Grubbs’ catalysts. The new Grubbs-type ruthenium carbene was used to synthesize living heterotelechelic ROMP polymers without any intermediate purification. Olefin metathesis with a mono substituted alkyne followed by ring closing metathesis with an...