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In this paper, the well-defined amphiphilic diblock copolymers, hyperbranched polyethylene-b-poly(ethylene oxide) (HBPE-b-PEO) and hyperbranched polyethylene-b-poly(acrylic acid) (HBPE-b-PAA), were synthesized by combing chain walking ethylene polymerization in the presence of 4-vinylbenzyl chloride catalyzed with Pd-α-diimine and click chemistry or atom transfer radical polymerization (ATRP). The...
This paper describes the synthesis, characterization, and self-assembly behavior of amphiphilic polyethylene-block-poly(l-glutamate) (PE-b-PGA) diblock copolymers. PE-b-PGA diblock copolymers were obtained by ring-opening polymerization (ROP) of γ-benzyl-l-glutamate-N-carboxyanhydride (BLG-NCA) using PE–COOCH( i Pr)NH 2 as a macroinitiator and subsequent deprotection of the benzylester...
Metallopolymers are emerging as a class of promising materials due to versatile properties and functionalities with a broad range of applications in high-performance devices. In this paper, a series of new helix–coil–helix poly(γ-benzyl-L-glutamate)-b-poly(ethylene glycol)-b-poly(γ-benzyl-L-glutamate) triblock copolymers selectively decorated with cyanoferrate complex (BEB-Fe) was successfully synthesized...
Well-defined coil-helical polyethylene-b-poly(γ-benzyl-l-glutamate) diblock copolymers (PE-b-PBLG) were synthesized by a tandem synthetic strategy combining living polymerization of ethylene and ring-opening polymerization of γ-benzyl-l-glutamate-N-carboxyanhydride (BLG-NCA). Narrowly dispersed hydroxyl-terminated polyethylenes (PE–OH) with high branching density were synthesized by living polymerization...
In this paper, the well-defined diblock copolymers consisting a linear polyethylene (LPE) and a poly(ethylene oxide) (PEO), LPE-b-PEO, were synthesized by combining the ethylene living coordination polymerization with fluorinated bis(phenoxyimine) titanium catalyst and the living ring-opening polymerization of ethylene oxide initiated by hydroxyl-terminated polyethylene (LPE–OH) as a macromolecular...
We report on the synthesis and self-assembly of a novel well-defined miktoarm star copolymer of (polyethylene) 2 −(polystyrene) 2 , (PE) 2 −(PS) 2 , with two linear crystalline PE segments and two PS segments as the building blocks based on chain shuttling ethylene polymerization (CSEP), click reaction and atom transfer radical polymerization (ATRP). Initially, alkynyl-terminated...
Branched α-olefin, 4-methyl-1-pentene (4 MP), was polymerized with classical α-diimine nickel complexes in the presence of MAO. Influences of structure of α-diimine nickel catalysts and polymerization parameters including temperature and [Al]/[Ni] mole ratio were evaluated. At 0 °C, 4-methyl-1-pentene can be polymerized in a living/controlled manner. The obtained poly(4-methyl-1-pentene)s are amorphous...
A novel titanium(IV) dimeric complex [(OC(Ph)HC(Ph)O)TiCl(μ-OCH(Ph)C(Ph)(n-Bu)O)] 2 (1) was synthesized and characterized, and its catalytic behaviors toward homo- and copolymerization of ethylene (E) and norbornene (NB) were also investigated. X-ray diffraction analysis of single crystal structure revealed that the titanium complex features a binuclear and six-coordinate, pseudo-octahedral...
A novel nitro–anilido–imino nickel complex (Ar 1 NCHC 6 H 3 (-5-NO 2 )NAr 2 )NiBr (Ar 1 =Ar 2 =2,6-dimethylphenyl) was designed, synthesized, and characterized to investigate ligand electronic effect on late transition metal olefin polymerization catalysts. As a catalyst for ethylene polymerization, neutral anilido–imino nickel complex with an...
Those effective catalyst precursors for syndiotactic styrene polymerization, Cp*Ti(OCH 2 –CHCH 2 ) 3 (I), Cp*Ti(OCH 2 –CHCHC 6 H 4 ) 3 (II), Cp*Ti(OCH 2 C 6 H 5 ) 3 (III), Cp*Ti(OCH 2 C 6 H 4 OCH 3 ) 3 (IV) were synthesized, and the influence of catalyst ligands on the catalytic...
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