Table 3. Polymerization of nBA and tBA in Cygnet 0.0 via SARA ATRP^a.

entry	monomer	[Cu/L]0 [ppm]	t [h]	convb [%]	kpappb	Mn,theoc	Mn,appd	Mw/Mnd	Ieffe [%]
1	nBA	300	1.50	82	1.074	8,580	7,290	1.18	118
2	tBA	300	1.75	99	2.419	10,310	8,950	1.21	115
3	nBA	100	2.50	91	0.621	9,550	8,010	1.14	119
4	nBA	75	22.5	88	0.095	9,200	7,600	1.12	121
5	nBA	50	8.25	no conversion

^aGeneral reaction conditions: T = 75 °C; V_tot = 4 mL; argon atmosphere; [monomer]₀ = 50% v/v; [nBA]₀ = 3.45 M for entries 1, 3–5, [tBA]₀ = 3.38 M for entry 2, [monomer]₀/[EBiB]₀/[Cu^IIBr₂/Me₆TREN]₀ = 80/1/0.024 for entries 1 and 2, [nBA]₀/[EBiB]₀/[Cu^IIBr₂/Me₆TREN]₀ = 80/1/0.008 for entry 3, [nBA]₀/[EBiB]₀/ [Cu^IIBr₂/Me₆TREN]₀ = 80/1/0.006 for entry 4, [nBA]₀/[EBiB]₀/ [Cu^IIBr₂/Me₆TREN]₀ = 80/1/0.004 for entry 5. SARA ATRP with copper wire: d = 0.1 cm, l = 4 cm.

^bMonomer conversion, apparent rate constant of propagation (k_p^app), and apparent theoretical degree of polymerization of monomer unit (DP_n,theo) were determined by NMR.

^cM_n,theo = ([monomer]₀/[EBiB]₀) × conversion × M_Monomer + M_EBiB.

^dApparent M_n and M_w/M_n were determined by GPC.

^eInitiation efficiency, I_eff = (M_n,theo/M_n,app) × 100%.