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. 2024 Nov 20;14(50):37143–37154. doi: 10.1039/d4ra06914e

Depolymerization of pristine poly(CP), poly(NB-ran-CP) and poly(DCP-ran-CP)a.

poly(CP) poly(NB-ran-CP)b poly(DCP-ran-CP)c
Initial Polymer 3.01 g 3.00 g 3.02 g
CP unit 3.01 g 1.41 g 1.84 g
NB (or DCP) unit 1.59 g 1.18 g
CP/NB (or CP/DCP) 100/0 in mol 55/45 in mol 76/24 in mol
47/53 in wt 61/39 in wt
M w (g mol−1) 453 000 238 000 250 000
M w/Mn 2.01 1.98 1.98
G2 0.38 g 0.31 g 0.28 g
After RCMD Non-volatile 0.47 g 1.91 g 1.57 g
Polymerd 0.09 g 1.60 g 1.29 g
CP unit 0.03 g, (2%) 0.13 g, (7%)
NB (or DCP) unit 1.57 g, (99%) 1.16 g, (99%)
CP/NB (or CP/DCP) 100/0 in mol 3/97 in mol 18/82 in mol
2/98 in wt 10/90 in wt
M w(g mol−1) 4700 6700
M w/Mn 4.0 5.1
Volatile part CP recovery 2.92 g 1.32 g 1.69 g
97% 94% 92%
a

Depolymerized in toluene at 60 °C for 24 h; [total polymer units] = 0.5 M, [(H2IMes)(PCy3)Cl2Ru Created by potrace 1.16, written by Peter Selinger 2001-2019 CHPh] = 5 mM, [(H2IMes)(PCy3)Cl2Ru Created by potrace 1.16, written by Peter Selinger 2001-2019 CHPh]:[total polymer units] = 1 : 100.

b

[Poly(CP) units] = 0.28 M.

c

[Poly(CP) units] = 0.38 M.

d

Weight of polymer = weight of non-volatile − weight of G2.