Homo- and co-polymers of norbornene containing aryl- ...
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| Title | Homo- and co-polymers of norbornene containing aryl- and hetaryl-azo dyes; synthesis and sensing properties. |
| Author(s) | A. Abd-El-Aziz, P. Shipman, P. Shipley, B. Boden, S. Aly, P. Harvey |
| Journal | Section Title: Inorganic Analytical Chemistry, Macromolecular Chemistry and Physics |
| Date | 2009 |
| Volume | 210 |
| Issue | 24 |
| Start page | 2099 |
| End page | 2106 |
| Abstract | Poly-norbornene homo- and copolymers contg. aryl- and/or hetaryl-azo dyes were prepd. through ring-opening metathesis polymn. (ROMP). Thermal studies indicated that the polymers were thermally stable up to 250°, and possessed glass transition temps. ranging from 93 to 133°. In THF solns., the aryl-azo dye contg. homopolymers, displayed λmax = 417 nm while the hetaryl-azo dye contg. homopolymers displayed λmax = 495 nm. The copolymers displayed a λmax that encompassed both the aryl- and hetaryl-azo dye range. The monomers and polymers showed bathochromic shifts in soln. when acidified. The polymers were cast into films that changed color in the presence of both aq. 1.2 M HCl or HCl(g). The color change reverses when exposed to aq. 1.2 M NaOH or NH3(g). This process was repeated several times without disintegration of the polymer film, indicating that these polymers may be useful as reusable acid sensors. [on SciFinder(R)] |
| DOI | 10.1002/macp.200900350 |
| ISSN | 1022-1352 |
Using APA 6th Edition citation style.
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