Highly Selective Polymerization of Rac-Lactide Initiated by Salen Aluminum Complex Bearing an Adamantane Derivative

Abstract

Using adamantane-1,3-diamine and 3,5-di-tert-butylsalicylic aldehyde as raw materials, the generated salen aluminum complex was characterized by ¹H, ¹³C NMR spectroscopy and elemental analysis. After isopropyl alcohol activation treatment, the complex has good activity (70.3-95.6%), which can provide poly(D,L-lactide) with a P_m of 0.87 for rac-lactide.

Graphical Abstract

Keywords:

• Polymerization
• Lactide
• Salen
• aluminum complexes

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Jilin Province Science and Technology Development Program (No. 20180101189JC); Guangxi Natural Science Foundation Program (No. 2020GXNSFAA159031); Foundation of Department of Education of Jilin Province (No. JJKH20200768KJ); Open Research Fund of Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (No. 20200101).