Table 3.

Determination of inhibition constant

Entrya	Chemical	K eq	k p
1	Water	7.9 E-2	204 650
2	THF	7.0 E-1	197 020
3	(CH3)2NC6H12	1.9 E-4	185 150
4	PEG-b-PCF3	1.4 E-4	197 200
5	PCF3	6.0 E-3	197 990
6	PEG-OCOMe	6.9 E-4	204 880

^aSee supplementary information for polymerization results (Supplementary Figs. 3–8)