Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes

	Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes
	Wang LF ; Cui DM ; Hou ZM ; Li W ; Li Y
刊名	organometallics
	2011
卷号	30 期号:4 页码:757-764
关键词	RING-OPENING POLYMERIZATION ISOPRENE POLYMERIZATION OLEFIN-POLYMERIZATION EPSILON-CAPROLACTONE ETHYLENE POLYMERIZATION DIBLOCK COPOLYMERS BLOCK-COPOLYMERS ALKYL COMPLEXES POLAR MONOMERS STEREOSPECIFIC POLYMERIZATION
ISSN号	0276-7333
通讯作者	cui dm
中文摘要	molecular weight (m(n) = (10-70) x 10(4)) and narrow polydispersity (pdi = 1.15-1.47).bis(phosphino)carbazole, hl (hl = 3,6-(tbu)(2)-1,8-(pph(2))(2)-carbazole), reacted with rare-earthmetal tris(aminobenzyl) complexes (ln(ch(2)c(6)h(4)n(me)(2)-o)(3)) to afford the first pnp-carbazolide rare-earth-metal bis(alkyl) complexes, lln(c(6)h(4)ch(2)n(me)(2))(2) (ln=y (1), sc (2), er (3)). the yttrium complex 1 was characterized by x-ray diffraction analysis as a solvent-free monomer, in which the carbazolide ligand coordinates to the y(3+) in a kappa p:kappa n:kappa p'-tridentate mode and the two aminobenzyl groups coordinate to the y(3+) ion in eta(1)c:kappa n-bidentate modes. complexes 1-3 combined with [ph(3)c][b(c(6)f(5))(4)] gave cationic catalyst systems that initiated cis-1,4-polymerizations of 1,3-conjugated dienes with high activities. especially, the system 1/[ph(3)c][b(c(6)f(5))(4)] displayed excellent cis-1,4-selectivity (> 99%) and living mode at a broad range of polymerization temperatures (0-80 degrees c). remarkably, the living yttrium polydiene active species could further initiate the ring-opening polymerization of epsilon-caprolactone to give selectively poly(cis-1,4-diene)b-polycaprolactone block copolymer with controllable
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000287546600014
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44803]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Wang LF,Cui DM,Hou ZM,et al. Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes[J]. organometallics,2011,30(4):757-764.
APA	Wang LF,Cui DM,Hou ZM,Li W,&Li Y.(2011).Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes.organometallics,30(4),757-764.
MLA	Wang LF,et al."Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes".organometallics 30.4(2011):757-764.