Synthesis of upper rim functionalized ...
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| Title | Synthesis of upper rim functionalized calixarene-based poly(Norbornenes). |
| Author(s) | A. Abd-El-Aziz, P. Shipman, J. Pilfold, P. Shipley |
| Journal | Section Title: Chemistry of Synthetic High Polymers, Macromolecular Chemistry and Physics |
| Date | 2010 |
| Volume | 211 |
| Issue | 9 |
| Start page | 996 |
| End page | 1002 |
| Abstract | A modified synthesis of 25-allyl-26,27,28-trihydroxycalix[4]arene is reported. This calix[4]arene was utilized to prep. calix[4]arenes contg. norbornene and calix[4]arene contg. azo dyes and norbornene on their upper rims. The calixarene monomers were reacted with Grubbs' second generation catalyst to give poly(norbornenes) contg. calixarenes. The poly(norbornenes) were detd. to possess mol. wts. between 45 100 and 116 200 with PDIs between 1.4 and 1.9. Thermal anal. showed that the azo dye contg. polymers were less thermally stable than the non-azo dye contg. polymers with decompns. beginning at 140° and 395°, resp. The azo dye contg. polymers displayed λmax at 430 nm in THF solns. that underwent a bathochromic shift to 520 nm when acidified with HCl(g), due to the formation of the azonium ion. [on SciFinder(R)] |
| DOI | 10.1002/macp.200900588 |
| ISSN | 1022-1352 |
Using APA 6th Edition citation style.
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