Synthesis of norbornenes containing cationic mono- ...
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| Title | Synthesis of norbornenes containing cationic mono- and di(Cyclopentadienyliron)arene complexes and their ring-opening metathesis polymerization. |
| Author(s) | A. Abd-El-Aziz, R. Okasha, L. May, J. Hurd |
| Journal | Section Title: Chemistry of Synthetic High Polymers, Journal of Polymer Science, Part A: Polymer Chemistry |
| Date | 2006 |
| Volume | 44 |
| Issue | 9 |
| Start page | 3053 |
| End page | 3070 |
| Abstract | A no. of classes of polynorbornenes contg. cationic iron moieties within their side chains were prepd. via ring-opening metathesis polymn. with a ruthenium-based catalyst. The iron-contg. polymers displayed excellent soly. in polar org. solvents. The wt.-av. mol. wts. of these polymeric materials were estd. to be in the range of 18,000-48,000. Thermogravimetric anal. of these polymers showed two distinct wt. losses. The first wt. loss was in the range of 204-260° and was due to the loss of the metallic moieties, whereas the second wt. loss was obsd. at 368-512° and was due to the degrdn. of the polymer backbone. Cyclic voltammetry studies of the iron-contg. polymers showed that the 18 e- cationic iron centers underwent a redn. to give the neutral 19 e- complexes at half-wave potential (E1/2) = -1.105 V. Photolysis of the metalated polymers led to the isolation of the norbornene polymers in very good yields. Differential scanning calorimetry studies showed a sharp increase in the glass transition temps. up to 91° when rigid arom. side chains were incorporated into the norbornene polymers. [on SciFinder(R)] |
| DOI | 10.1002/pola.21412 |
| ISSN | 0887-624X |
Using APA 6th Edition citation style.
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