Table 1. Kinetic Depolymerization Data for (gA)2 and (PA)AgA for a Range of Conditionsa.
(gA)2t1/2 (h) |
(PA)AgAt1/2 (h) |
|||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(°C) | pH: 2 | 3 | 4 | 5 | 6 | 7 | 8 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
25 | 674 | 647 | 146 | 43.2 | 2.78 | 0.63 | 0.18 | 1394 | 2528 | 1655 | 1027 | 806 | 88.6 | 45.0 |
37 | 308 | 298 | 62.6 | 12.6 | 1.34 | 0.12 | 0.02 | 758 | 1300 | 826 | 583 | 432 | 51.9 | 23.9 |
50 | 76.8 | 53.5 | 26.1 | 2.91 | 0.76 | 0.03 | 0.01 | 175 | 232 | 281 | 157 | 83.2 | 14.1 | 3.43 |
65 | 34.4 | 27.9 | 5.63 | 0.82 | 0.17 | 0.01 | 0.01 | 93.3 | 90.6 | 94.0 | 49.8 | 29.4 | 4.63 | 0.88 |
(gA)2 depolymerization, (ksc + kbb) (h–1) | (PA)AgA depolymerization, ksc (h–1)*10–3 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
25 | 0.001 | 0.001 | 0.005 | 0.016 | 0.249 | 1.11 | 3.96 | 0.497 | 0.27 | 0.419 | 0.675 | 0.86 | 7.83 | 15.4 |
37 | 0.002 | 0.002 | 0.011 | 0.055 | 0.516 | 5.86 | 31.1 | 0.914 | 0.533 | 0.839 | 1.19 | 1.60 | 13.4 | 29.0 |
50 | 0.009 | 0.013 | 0.027 | 0.238 | 0.914 | 22.7 | 66.4 | 3.95 | 2.98 | 2.47 | 4.42 | 8.33 | 49.2 | 202 |
65 | 0.020 | 0.025 | 0.123 | 0.843 | 4.21 | 62.3 | 100 | 7.43 | 7.64 | 7.38 | 13.9 | 23.5 | 150 | 792 |
See Supporting Information for calculations and parameters as well as raw data.