Highly active zinc alkyl cations for the controlled and immortal ring-opening polymerization of ε-caprolactone.
نویسندگان
چکیده
Zinc alkyl cations supported by N,N-BIAN-type bidentate ligands were found to be highly active in the immortal ROP of ε-caprolactone to yield narrowly disperse and chain length-controlled poly(ε-caprolactone), whether in solution or bulk polymerization conditions.
منابع مشابه
Bimetallic aluminum alkyl complexes as highly active initiators for the polymerization of ε-caprolactone.
Two dinuclear aluminum alkyl complexes supported by a piperazidine-bridged bis(phenolato) group were prepared, and both complexes exhibited extremely high activity for the ring-opening polymerization of ε-caprolactone. In the presence of benzyl alcohol (BnOH), the polymerization accelerated dramatically.
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Stoichiometric reactions of YCl3(THF)3 with potassium 2-((arylimino)methyl)quinolin-8-olates or 2-(1(arylimino)ethyl)quinolin-8-olates in THF solution gave the mononuclear LYCl2(DMSO)2 complexes 1−5 in the presence of DMSO and a representative dinuclear complex 6 in the absence of DMSO. All yttrium complexes were fully characterized by NMR measurements and elemental analysis, and the crystal st...
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ورودعنوان ژورنال:
- Dalton transactions
دوره 41 12 شماره
صفحات -
تاریخ انتشار 2012