ma6b02413_si_004.cif (282.97 kB)
Sequence and Regularity Controlled Coordination Copolymerization of Butadiene and Styrene: Strategy and Mechanism
dataset
posted on 2017-01-18, 17:20 authored by Fei Lin, Meiyan Wang, Yupeng Pan, Tao Tang, Dongmei Cui, Bo LiuThe
stereoselective and sequence controlled coordination copolymerizations
of butadiene (BD) and styrene (St) with diblock, tapered, gradient,
and random sequence distributions were achieved for the first time
through varying the central metals of the rare-earth metal bis(alkyl)
catalyst precursors (Flu-CH2-Py)Ln(CH2SiMe3)2(THF)x (Flu = fluorenyl, Py = pyridyl, x = 1: Ln = Nd(1), Y(2), Tm(3); x = 0, Ln = Sc(4)). The thermal behavior, morphology,
and the mechanical property of these copolymers were analyzed, and
their relationships were established for the first time. The mechanism
of central metal size tuning the sequence distribution was discussed
based on DFT calculations.
