Enhanced Catalytic Activity of Aluminum Complexes for the Ring-Opening Polymerization of ε-Caprolactone

被引：26

作者：

Kosuru, Someswara Rao ^{[1
]}

Sun, Ting-Han ^{[1
]}

Wang, Li-Fang ^{[1
]}

Vandavas, Jaya Kishore ^{[4
]}

Lu, Wei-Yi ^{[1
]}

Lai, Yi-Chun ^{[1
]}

Hsu, Sodio C. N. ^{[1
]}

Chiang, Michael Y. ^{[1
,3
]}

Chen, Hsuan-Ying ^{[1
,2
]}

机构：

[1] Kaohsiung Med Univ, Dept Med & Appl Chem, Kaohsiung 80708, Taiwan

[2] Kaohsiung Med Univ, Dept Med Res, Kaohsiung 80708, Taiwan

[3] Natl Sun Yat Sen Univ, Dept Chem, Kaohsiung 804, Taiwan

[4] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada

来源：

INORGANIC CHEMISTRY | 2017年 / 56卷 / 14期

关键词：

STEREOSELECTIVE POLYMERIZATION; METAL-COMPLEXES; CYCLIC ESTERS; LACTIDE; BASE; LIGANDS; BONE; SCAFFOLDS; DELIVERY; BIOMOLECULES;

D O I：

10.1021/acs.inorgchem.7b00763

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of dinuclear aluminum (Al(2)Pyr(2)) complexes bridged by two pyrazole ligands were synthesized, and their catalytic activity toward ring-opening polymerization of e-caprolactone (CL) was investigated. Different types of the Al-N-N-Al-N-N skeletal ring were found among these Al(2)Pyr(2) complexes. The butterfly form, (L2Al2Me4)-Al-Thio, exerted the highest catalytic activity for CL polymerization. K-2-CL coordination with both Al centers within the butterfly form (L2Al2Me4)-Al-Thio facilitates the initiation process. Generally speaking, the Al(2)Pyr(2) complexes exhibited substantially higher catalytic activity for CL polymerization than literature examples such as beta-diketiminate- or traiaza-bearing aluminum complexes. In fact, the Al(2)Pyr(2) complexes can even carry out CL polymerization at room temperature.

引用

页码：7998 / 8006

页数：9

共 65 条

[1] Metal-catalyzed immortal ring-opening polymerization of lactones, lactides and cyclic carbonates [J].

Ajellal, Noureddine ;

Carpentier, Jean-Francois ;

Guillaume, Clemence ;

Guillaume, Sophie M. ;

Helou, Marion ;

Poirier, Valentin ;

Sarazin, Yann ;

Trifonov, Alexander .

DALTON TRANSACTIONS, 2010, 39 (36) :8363-8376

[2] Electronic influence of ligand substituents on the rate of polymerization of ε-caprolactone by single-site aluminium alkoxide catalysts [J].

Alcazar-Roman, LM ;

O'Keefe, BJ ;

Hillmyer, MA ;

Tolman, WB .

DALTON TRANSACTIONS, 2003, (15) :3082-3087

[3] Multinuclear alkylaluminium macrocyclic Schiff base complexes:: influence of procatalyst structure on the ring opening polymerisation of ε-caprolactone [J].

Arbaoui, Abdessamad ;

Redshaw, Carl ;

Hughes, David L. .

CHEMICAL COMMUNICATIONS, 2008, (39) :4717-4719

[4] Metal catalysts for ε-caprolactone polymerisation [J].

Arbaoui, Abdessamad ;

Redshaw, Carl .

POLYMER CHEMISTRY, 2010, 1 (06) :801-826

[5] Bis(8-quinolinolato)aluminum ethyl complexes: Iso-Selective Initiators for rac-Lactide Polymerization [J].

Bakewell, Clare ;

Platel, Rachel H. ;

Cary, Samantha K. ;

Hubbard, Steven M. ;

Roaf, Joshua M. ;

Levine, Alex C. ;

White, Andrew J. P. ;

Long, Nicholas J. ;

Haaf, Michael ;

Williams, Charlotte K. .

ORGANOMETALLICS, 2012, 31 (13) :4729-4736

[6] Synthesis of Aluminum Complexes of Triaza Framework Ligands and Their Catalytic Activity toward Polymerization of ε-Caprolactone [J].

Bakthavachalam, K. ;

Reddy, N. Dastagiri .

ORGANOMETALLICS, 2013, 32 (11) :3174-3184

[7] Group 1 and 2 and Early Transition Metal Complexes Bearing N-Heterocyclic Carbene Ligands: Coordination Chemistry, Reactivity, and Applications [J].

Bellemin-Laponnaz, Stephane ;

Dagorne, Samuel .

CHEMICAL REVIEWS, 2014, 114 (18) :8747-8774

[8] Controlled polymerization of DL-lactide using a Schiff's base al-alkoxide initiator derived from 2-hydroxyacetophenone [J].

Bhaw-Luximon, A ;

Jhurry, D ;

Spassky, N .

POLYMER BULLETIN, 2000, 44 (01) :31-38

[9] Aliphatic polyester polymer stars: synthesis, properties and applications in biomedicine and nanotechnology [J].

Cameron, Donald J. A. ;

Shaver, Michael P. .

CHEMICAL SOCIETY REVIEWS, 2011, 40 (03) :1761-1776

[10] Angiogenesis in Bone Regeneration: Tailored Calcium Release in Hybrid Fibrous Scaffolds [J].

Castano, Oscar ;

Sachot, Nadege ;

Xuriguera, Elena ;

Engel, Elisabeth ;

Planell, Josep A. ;

Park, Jeong-Hui ;

Jin, Guang-Zhen ;

Kim, Tae-Hyun ;

Kim, Joong-Hyun ;

Kim, Hae-Won .

ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (10) :7512-7522

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