“…use of inappropriate polymer standards) can cause articial narrowing of the MWD. 23,24 Comparative polymerizations of MEA in 1-propanol at 120 C were carried out, once again resulting in very similar MWDs (Fig. 1b) with M n ¼ 12,900 and M w /M n ¼ 2.02 ([TBP] 0 ¼ 4.1 mM), M n ¼ 13,900 and M w /M n ¼ 2.03 ([TBP] 0 ¼ 2.5 mM), M n ¼ 15,000 and M w /M n ¼ 1.93 ([TBP] ¼ 1.4 mM), and M n ¼ 14,700 and M w /M n ¼ 2.04 ([TBP] ¼ 0.41 mM).…”