POLY 456 |
| Poly(2-methoxy-(5-(6'-dimethylphosphate)-hexyloxy)-1,4-phenylenevinylene-ran-2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenyl-enevinylene) (MEH-PO-PPV) was synthesized via Heck coupling reaction from MEHOB-DV, MEHOB-2Br and MPOHOB-2Br by varying the ratio of MPOHOB-2Br and MEHOB-2Br (100/0, 60/40, 20/80, 0/100). The monomer, containing phosphine oxide groups, MPOHOB-2Br was synthesized via Williamson ether reaction from 4-methoxyphenol and 1,6-dibromohexane, followed by bromination and Arbuzov reaction with trimethyl phosphite, while MEHOB-2Br was synthesized via Williamson ether reaction from 4-methoxyphenol and 2-ethylhexyl bromide, followed by bromination. MEHOB-2Br was further reacted via formylation and subsequent Wittig reaction to afford MEHOB-DV. The monomers and their intermediates were analyzed by NMR, while the polymers were characterized by FT-IR, NMR, GPC, DSC, TGA, and solubility measurement, and optical (UV-vis, PL) and electrical properties (CV) were also evaluated. MEH-PO-PPV, containing phosphine oxide groups, exhibited better solubility, and blue shifting in UV-vis absorption and PL emission, compare with MEH-PPV |
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Conjugated Polymer Materials and Hybrids: Synthesis, Macromolecular Assemblies, and Nanostructures
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Polymer Chemistry |