Table 1 Accelerated polymerization of NCA initiated from Hex-NH2 catalyzed by CE.

From: Accelerated polymerization of N-carboxyanhydrides catalyzed by crown ether

Entrya

[I]0/mM

[M]0/[I]0

t/minb

Mn/Mn*(kDa)c,d

Đd

1

0.5

50

12

76.4/11.1

1.24

2

0.5

100

18

136/22.0

1.21

3

0.5

150

25

206/33.0

1.28

4

2

100

5

107/22.0

1.28

5

3

100

3

100/22.0

1.34

6

4

100

2

88.7/22.0

1.33

  1. aAll polymerizations were conducted at room temperature in DCM using Hex-NH2 as the initiator, BLG-NCA as the monomer, and 18-C-6 as catalyst. [I]0 = [18-C-6]0.
  2. bPolymerization time reaching 95% monomer conversion.
  3. cObtained MWs/Designed MWs*.
  4. dDetermined by GPC; dn/dc = 0.100–0.105.
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