Salen complexes based on 1,4-diaminocyclohexane and their exploitation for the polymerisation of rac-lactide

Stuart L. Hancock, Mary F. Mahon, Matthew D. Jones

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this paper we have prepared a series salen derived ligands based on a trans-1,4-diaminocyclohexane backbone. The ligands could be easily complexed to either Ti(iv) or Al(iii) metal centres generating complexes with formulae Ti2(OiPr)6(L) and Al2(Me)4(L) respectively. The complexes were shown to be efficient initiators for the ring opening polymerisation of rac-lactide. The Al(iii) complexes were more controlled than their Ti(iv) analogues, producing PLA with a moderate isotactic bias and narrow molecular weight distribution. The molecular weight of the resultant polymer, for the Al(iii) system, could be controlled by the amount of benzyl alcohol added initiator indicating that these systems show immortal behaviour.
Original languageEnglish
Pages (from-to)1996-2001
Number of pages5
JournalNew Journal of Chemistry
Volume37
Issue number7
Early online date16 Apr 2013
DOIs
Publication statusPublished - 1 Jul 2013

Fingerprint

Ligands
Polymerization
Benzyl Alcohol
Ring opening polymerization
Molecular weight distribution
Polymers
Alcohols
Metals
Molecular weight
disalicylaldehyde ethylenediamine
1,4-diaminocyclohexane
dilactide

Cite this

Salen complexes based on 1,4-diaminocyclohexane and their exploitation for the polymerisation of rac-lactide. / Hancock, Stuart L.; Mahon, Mary F.; Jones, Matthew D.

In: New Journal of Chemistry, Vol. 37, No. 7, 01.07.2013, p. 1996-2001.

Research output: Contribution to journalArticle

@article{a12daad9418148f8be6970944723927d,
title = "Salen complexes based on 1,4-diaminocyclohexane and their exploitation for the polymerisation of rac-lactide",
abstract = "In this paper we have prepared a series salen derived ligands based on a trans-1,4-diaminocyclohexane backbone. The ligands could be easily complexed to either Ti(iv) or Al(iii) metal centres generating complexes with formulae Ti2(OiPr)6(L) and Al2(Me)4(L) respectively. The complexes were shown to be efficient initiators for the ring opening polymerisation of rac-lactide. The Al(iii) complexes were more controlled than their Ti(iv) analogues, producing PLA with a moderate isotactic bias and narrow molecular weight distribution. The molecular weight of the resultant polymer, for the Al(iii) system, could be controlled by the amount of benzyl alcohol added initiator indicating that these systems show immortal behaviour.",
author = "Hancock, {Stuart L.} and Mahon, {Mary F.} and Jones, {Matthew D.}",
year = "2013",
month = "7",
day = "1",
doi = "10.1039/c3nj00111c",
language = "English",
volume = "37",
pages = "1996--2001",
journal = "New Journal of Chemistry",
issn = "1144-0546",
publisher = "Royal Society of Chemistry",
number = "7",

}

TY - JOUR

T1 - Salen complexes based on 1,4-diaminocyclohexane and their exploitation for the polymerisation of rac-lactide

AU - Hancock, Stuart L.

AU - Mahon, Mary F.

AU - Jones, Matthew D.

PY - 2013/7/1

Y1 - 2013/7/1

N2 - In this paper we have prepared a series salen derived ligands based on a trans-1,4-diaminocyclohexane backbone. The ligands could be easily complexed to either Ti(iv) or Al(iii) metal centres generating complexes with formulae Ti2(OiPr)6(L) and Al2(Me)4(L) respectively. The complexes were shown to be efficient initiators for the ring opening polymerisation of rac-lactide. The Al(iii) complexes were more controlled than their Ti(iv) analogues, producing PLA with a moderate isotactic bias and narrow molecular weight distribution. The molecular weight of the resultant polymer, for the Al(iii) system, could be controlled by the amount of benzyl alcohol added initiator indicating that these systems show immortal behaviour.

AB - In this paper we have prepared a series salen derived ligands based on a trans-1,4-diaminocyclohexane backbone. The ligands could be easily complexed to either Ti(iv) or Al(iii) metal centres generating complexes with formulae Ti2(OiPr)6(L) and Al2(Me)4(L) respectively. The complexes were shown to be efficient initiators for the ring opening polymerisation of rac-lactide. The Al(iii) complexes were more controlled than their Ti(iv) analogues, producing PLA with a moderate isotactic bias and narrow molecular weight distribution. The molecular weight of the resultant polymer, for the Al(iii) system, could be controlled by the amount of benzyl alcohol added initiator indicating that these systems show immortal behaviour.

UR - http://www.scopus.com/inward/record.url?scp=84884628810&partnerID=8YFLogxK

U2 - 10.1039/c3nj00111c

DO - 10.1039/c3nj00111c

M3 - Article

VL - 37

SP - 1996

EP - 2001

JO - New Journal of Chemistry

JF - New Journal of Chemistry

SN - 1144-0546

IS - 7

ER -