Non-symmetrical aluminium salen complexes: Synthesis and their reactivity with cyclic ester

被引：10

作者：

Duan, Ranlong ^{[1
]}

Sun, Zhiqiang ^{[1
]}

Pang, Xuan ^{[1
]}

Hu, Chenyang ^{[1
]}

Shao, Huili ^{[2
]}

Chen, Xuesi ^{[1
]}

Wang, Xianhong ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Polymer Ecomat, Changchun 130022, Peoples R China

[2] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 20051, Peoples R China

来源：

POLYMER | 2015年 / 77卷

基金：

中国国家自然科学基金;

关键词：

Half-salen; Ring-opening polymerization; Lactide; RING-OPENING POLYMERIZATION; STEREOSELECTIVE POLYMERIZATION; EPSILON-CAPROLACTONE; RACEMIC LACTIDE; RAC-LACTIDE; BASE COMPLEX; MECHANISM; CATALYSTS; LIGAND; METAL;

D O I：

10.1016/j.polymer.2015.09.036

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Non-symmetrical aluminium salen complexes that contained different substituents were designed and synthesized. All the ligands and their complexes were characterized by H-1, C-13 NMR and elemental analysis. These complexes can be used as catalysts to produce polylactide and poly-epsilon-caprolactone. All polymerizations were living and molar mass distributions were narrow. The M-n(obsd) of the isolated polymers were in good agreement with M-n(calcd). The polymerization rate of electrophilic substituted complex was higher than the non-electrophilic substituted analogies. The bulky substituents with more steric hindrance of the complexes had relatively lower activity. Kinetic studies showed that the polymerizations were both first-ordered with respect to lactide and epsilon-caprolactone monomers. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：122 / 128

页数：7

共 43 条

[1] Recent developments in ring opening polymerization of lactones for biomedical applications [J].

Albertsson, AC ;

Varma, IK .

BIOMACROMOLECULES, 2003, 4 (06) :1466-1486

[2] Ring-opening polymerization of lactide with group 3 metal complexes supported by dianionic alkoxy-amino-bisphenolate ligands: Combining high activity, productivity, and selectivity [J].

Amgoune, A ;

Thomas, CM ;

Roisnel, T ;

Carpentier, JF .

CHEMISTRY-A EUROPEAN JOURNAL, 2006, 12 (01) :169-179

[3] Intermolecular chain transfer to polymer with chain scission: General treatment and determination of k(p)/k(tr) in L,L-lactide polymerization [J].

Baran, J ;

Duda, A ;

Kowalski, A ;

Szymanski, R ;

Penczek, S .

MACROMOLECULAR RAPID COMMUNICATIONS, 1997, 18 (04) :325-333

[4] Redox-Controlled Polymerization of Lactide Catalyzed by Bis(imino)pyridine Iron Bis(alkoxide) Complexes [J].

Biernesser, Ashley B. ;

Li, Bo ;

Byers, Jeffery A. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (44) :16553-16560

[5] Polymerization of lactide with zinc and magnesium β-diiminate complexes:: Stereocontrol and mechanism [J].

Chamberlain, BM ;

Cheng, M ;

Moore, DR ;

Ovitt, TM ;

Lobkovsky, EB ;

Coates, GW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (14) :3229-3238

[6]

Chisholm MH, 1997, CHEM COMMUN, P1999

[7]

Duda A, 2000, MACROMOL SYMP, V153, P41, DOI 10.1002/1521-3900(200003)153:1<41::AID-MASY41>3.0.CO

[8]

2-I

[9] Ring-opening polymerization of L-lactide initiated by (2-methacryloxy)ethyloxy-aluminum trialkoxides.: 1.: Kinetics [J].

Eguiburu, JL ;

Fernandez-Berridi, MJ ;

Cossío, FP ;

San Román, J .

MACROMOLECULES, 1999, 32 (25) :8252-8258

[10] Applications of Orthogonal "Click" Chemistries in the Synthesis of Functional Soft Materials [J].

Iha, Rhiannon K. ;

Wooley, Karen L. ;

Nystrom, Andreas M. ;

Burke, Daniel J. ;

Kade, Matthew J. ;

Hawker, Craig J. .

CHEMICAL REVIEWS, 2009, 109 (11) :5620-5686

← 1 2 3 4 5 →