Soluble Poly Aryl-Oxadiazole Conjugated Polymers

A single-step preparation of a new class of soluble co- and terpoly(arylene-oxadia-zole) polymers containing at least 20 repeat units have been prepared by the condensation of aromatic dicarboxylic acids with hydrazine hydro-chloride. Photoluminescence efficiencies of 50% were reported. Targeted applications include electroluminescent devices, photovoltaics, and diodes. 

Phosphorus pentoxide (3.0 g) was dissolved in 50 ml of methylsulfuric acid at 110°C and then treated with a mixture of 9,9-di-(2-ethylhexyl)-fluorene-2,7-dicarboxylic acid (2.0 g) and hydrazine hydrochloride (286 mg). After the suspension was stirred 

TABLE 1. Photoluminescence efficiencies for selected experimental agents activated using a UV lamp at 365 nm. 

In a subsequent investigation by the author [2] additional poly(aromatic-oxadiazole) agents were prepared using [l,2-d 4,5-d ]bisoxazole, (I), and derivatives. 

Kambe [3] prepared electroluminescent devices containing two or more stacked organic layers, one of which consisted of an electron injecting an organic layer of conjugated poly(aryl-oxadiazole) derivatives, (111) and (IV). 

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Title Soluble Poly(Aryl-Oxadiazole) Conjugated Polymers... 

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