Journal
POLYMER CHEMISTRY
Volume 6, Issue 20, Pages 3754-3757Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5py00508f
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Funding
- National High Technology Research and Development Program of China [2011AA02A202]
- Research Fund for the Doctoral Program of Higher Education of China [20123221110009]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A hydrogen-bond motif based on a squaramide and sparteine efficiently promoted the ring-opening polymerization of L-lactide at ambient temperature. Narrowly dispersed polymers with precise molar masses (D = 1.05, M-n = 16 240 g mol(-1)) were obtained in a short reaction time (98% conv., 11 h) and with retention of stereochemistry. Experimental data and computational results indicated that the squaramide and sparteine pair is a competent H-bond donor-acceptor catalyst in living polymerization.
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