Table 2. Synthesis of Poly(cis-1-b-trans-1-b-cis-1).
| entry | n:CTA | cis/trans | Mtheo (g mol–1)b | Mn,NMR (g mol–1)c | Mn, SECd (g mol–1)d | ĐMd |
|---|---|---|---|---|---|---|
| 1 | 20:1 | 54:46 (3:97) | 4650 (2370) | 3700 (2200) | 4600 (2100) | 2.06 (2.02) |
| 2 | 40:1 | 54:46 (3:97) | 9210 (4650) | 10 000 (5000) | 8900 (4700) | 1.60 (1.67) |
a
Sequential procedure outlined in Scheme 2, with [1]0 = 1 mol L–1. Monomer conversion quantitative for each step. Values in brackets were obtained after the ROMP step.
b
Calculated as Mr(CTA) + (2 × n × Mr(1)).
c
Calculated by the relative integration of the methylene protons in the CTA (δ = 4.19–4.27 ppm) and the polymer (δ = 4.60 – 4.80 ppm).
d
Calculated by SEC relative to polystyrene standards in THF eluent.