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Tetrahydrosalen backboned gadolinium complex as initiator for the ring-opening polymerization of ɛ-caprolactone
Tetrahydrosalen ligand was employed in the synthesis of gadolinium complex. The ligand was deprotoned by LiBu, and the afforded lithium salt was reacted with anhydrous GdCl 3 to produce the gadolinium complex through salt metathesis. This complex was successfully used to initiate the ring-opening po...
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Published in: | Chinese chemical letters 2008-06, Vol.19 (6), p.681-684 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Tetrahydrosalen ligand was employed in the synthesis of gadolinium complex. The ligand was deprotoned by LiBu, and the afforded lithium salt was reacted with anhydrous GdCl
3 to produce the gadolinium complex through salt metathesis. This complex was successfully used to initiate the ring-opening polymerization of ɛ-caprolactone. The initiation conditions in different temperature, monomer-to-initiator ratio and time were investigated. Under the condition: [ɛ-caprolactone]:[catalyst]
=
600, 56
°C, toluene: 2
ml, poly(ɛ-caprolactone) (PCL) with Mw
=
11,2782 and PDI
=
1.96 was achieved. |
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ISSN: | 1001-8417 1878-5964 |
DOI: | 10.1016/j.cclet.2008.04.021 |