Citation: Jing Huang, Jian Fang Yu, Guang Ming Wu, Wei Lin Sun Zhi Quan Shen. In situ generated, tetrahydrosalen stabilized yttrium borohydride complex:Efficient initiator for the ring-opening polymerization of ε-caprolactone[J]. Chinese Chemical Letters, ;2009, 20(11): 1357-1360. doi: 10.1016/j.cclet.2009.06.018 shu

In situ generated, tetrahydrosalen stabilized yttrium borohydride complex:Efficient initiator for the ring-opening polymerization of ε-caprolactone

Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Received Date: 11 March 2009

Fund Project: 20774078) and the Special Funds for Major State Basic Research Projects (No. 2005CB623802).The authors acknowledge the financial supports from National Nature Science Foundation (Nos. 20674071

In this paper, we report the preparation of a new tertrahydrosalen-stabilized yttrium complex which was employed as an initiator-precursor for the polymerization of e-caprolactone (ε-CL) in the presence of NaBH ₄ to give interesting hydroxytelechelic poly(ε-caprolactone) (PCL). The effect of [monomer]/[initiator] ([CL]/[I]), temperature and time on the polymerization was investigated. It was found that under the condition:[CL]/[I]=1200, 55 ℃, toluene:0.5 mL, ε-CL:0.5 mL, PCL with M_w=32,600 and PDI=1.47 was obtained.
- Tetrahydrosalen,
- Yttrium complex,
- Ring-opening polymerization,
- ε-Caprolact
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