POLYHEDRAL OLIGOMERIC SILSESQUIOXANE (POSS)-LINKED LIGANDS

摘要

Polyhedral oligomeric silsesquioxanes (POSS) linked ligand of the general formula (I): L [(R1a)n-1(SiO1,5)n R2a ]k [(R1b)n-1SiO1,5)n R2b ]| [(R1C)n-1SiO1,5)n R2c ]m in which (R1a,b,c)n-1(SiO1,5)n is a polyhedral oligomeric silsesquioxanes (POSS) with n = 4, 6, 8,10, 12, 14, 16 or 18 and R1a, R1b,R1c is each independently selected from the group consisting of same or different branched or linear C1-C20 alkyl chains, cyclo alkyl, C1-C20 alkoxy, aryl, aryloxy, heteroaryl and arylalkyl groups, k, l, m is 0 or 1 provided that k+l+m = 1, R2a, R2b, R2c is a spacer that binds the polyhedral oligomeric silsesquioxane (POSS) to the ligand L and ligand L is an uncharged electron donor.