Azo dye functionalized oligomers and polymers ...

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Paper title Azo dye functionalized oligomers and polymers containing neutral and cationic cyclopentadienyliron complexes.
Paper author(s) Alaa S. Abd-El-Aziz, Rawda M. Okasha, Tarek H. Afifi, Patrick O. Shipman
Proceedings title Abstracts of Papers, 227th ACS National Meeting, Anaheim, CA, United States, March 28-April 1, 2004
Date 2004
Abstract Recently, we have focused on the synthesis of monomeric and polymeric cationic organoiron functionalized with azo dyes. In this presentation we will describe the synthesis of novel polyferrocene incorporating azo dyes and pendent cyclopentadienyliron cations. Condensation of 1,1'-ferrocenedicarbonyl chloride with azo dyes functionalized arene cyclopentadienyliron complexes resulted in the isolation of neutral/cationic organoiron oligomers contg. azo dyes. Polymn. of these oligomers with sulfur dinucleophiles allowed for the isolation of polymers contg. iron in and pendent to their backbones, these polymers displayed excellent soly. in polar solvents. Photolytic demetallation of these polymers resulted in the isolation of polyferrocenes contg. azo dye moieties in their backbones. UV-vis studies showed a λmax around 430 nm in DMF, upon addn. of 10 % HCl a bathocromic shift to higher wavelength, λmax around 525 nm, was obsd. due to the formation of azonium ion. [on SciFinder(R)]

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