Table 1. Characterization of Polymers P1–P9 by NMR and SEC.

polymera	UPy feedb [mol %]	conversionc [%]	observed UPyd [mol %]	DPe	Mnf [KDa]	Đg
P1	0	100		100	51	2.15
P2	0	99		247	76	2.16
P3	0	99		495	135	2.06
P4	5	100	4	100	55	2.05
P5	5	99	5	248	84	1.81
P6	5	80	5	400	187	1.70
P7	10	99	9	99	66	1.85
P8	10	97	8	242	89	1.92
P9	10	88	8	440	161	1.45

^aPolymers as depicted in Figure 2.

^bTheoretical molar percentage of UPy-urea monomer 5 incorporated into the polymer.

^cMonomer conversion determined by ¹H-NMR spectroscopy in chloroform-d.

^dObserved molar percentage of UPy-urea monomer 5 incorporated into the polymer.

^eDegree of polymerization (DP) calculated from the monomer conversion.

^fNumber average molecular weight (M_n) measured by SEC at 1 mg mL^–1 in THF.

^gMolar mass dispersity index obtained from SEC.