Polymeric arylamine

J.P. Chen, G. Klaerner, J.-I. Lee, D. Markiewicz, V.Y. Lee, R.D. Miller, and J.C. Scott, Efficient, blue light-emitting diodes using cross-linked layers of polymeric arylamine and fluorene, Synth. Met., 107 129-135, 1999. 

Chen, J.P., et aL 1999. Efficient, blue hght-emitting diodes using cross-linked layers of polymeric arylamine and fluorene. Synthetic Met 107 129. 

Due to its aromatic iminodiacetic acid structure, PIDAA is not only more acidic than NPG but is also a more efficient chelator for Ca+. Thus it can effectively serve both as an etchant and as a primer like NPG because of its arylamine structure. To gain further insight into the mechanism of the spontaneous polymerization of acrylics caused by PIDAA, several derivatives of PIDDA with electron-withdrawing or -donating aromatic ring substituents were prepared. The rationale for this study was to ascertain, by... 

Arylamines display electronic properties that are favorable for materials science. In particular, arylamines are readily oxidized to the aminium form, and this leads to conductivity in polyanilines, hole-transport properties in triarylamines, stable polyradicals with low energy or ground-state, high-spin structures, and the potential to conduct electrochemical sensing. The high yields of the palladium-catalyzed formation of di- and triarylamines has allowed for ready access to these materials as both small molecules and discrete oligomeric or polymeric macromolecules. 

Kanbara has since generated a family of poly(iminoarene)s by reaction of 1,3-dibromo-benzene, 4,4-dibromodiphenyl ether, 2,6- and 3,5-dibromopyridines, 2,4-dibromothiophene, and l,l -dibromoferrocene with a variety of bifunctional arylamines [229]. In many cases, no polymer was obtained, but for polymerizations involving dibromobenzene and 2,6-dibromopyridine, materials with JVfn values of over 10,000 were obtained. Spectral data were provided for poly(2,6-aminopyridine) and a polymer made from dibromobenzene and a dia-rylamino sulfone. These authors have also investigated nickel catalysts for the polymerization of diamines with dichloroarenes, but the materials generated had molecular weights below 10,000 in most cases [230]. 

Reductive alkylation of primary arylamines with an aldehyde is often accompanied by side reactions leading to polymeric products, especially with formaldehyde. Gradual addition of an aldehyde to an amine in order to maintain low concentrations of the aldehyde is an effective procedure for minimizing the side reactions.41 Thus, Bonds and Greenfield obtained high yields of (V,(V-dimethylarylamines by the reductive alkylation of primary arylamines with formaldehyde over Pd-C by gradually adding an... 

Polyelectrolytes and soluble polymers containing triarylamine monomers have been applied successfully for the indirect electrochemical oxidation of benzylic alcohols to the benzaldehydes. With the triarylamine polyelectrolyte systems, no additional supporting electrolyte was necessary [91]. Polymer-coated electrodes containing triarylamine redox centers have also been generated either by coating of the electrode with poly(4-vinyltri-arylamine) films [92], or by electrochemical polymerization of 4-vinyl- or 4-(l-hydroxy-ethyl) triarylamines [93], or pyrrol- or aniline-linked triarylamines [94], Triarylamine radical cations are also suitable to induce pericyclic reactions via olefin radical cations in the form of an electron-transfer chain reaction. These include radical cation cycloadditions [95], dioxetane [96] and endoperoxide formation [97], and cycloreversion reactions [98]. 

The above proposal is supported by the lack of reaction of electron-deficient arylamines, such as p-N02-aniline and p-Et02C-aniline, in the copper-mediated reactions with lead acetates because of the inability of the amines to reduce Cu(II) to Cu(I). This lack of reduction is indicated by the lack of a color change upon addition of Cu(OAc)2 to a solution of either of the amines. Further, the presence of Cu(III) species may be responsible for the formation of arenes and polymeric species during the A-arylation of anilines that are easily oxidized (Scheme 11). 

Ten neutral monomeric, dimeric and polymeric mercury(ii) complexes of compositions HgX2L (where X = chloride, bromide, iodide, nitrate and azide, and L = (J7)-N-(pyridin-2-ylmethylidene)arylamine) display broad emission bands at ylmax = 410 nm in acetonitrile solution. ... 

Autoxidation inhibitors n. Chemical agents, which inhibit the autoxidation (or oxidative polymerization) reactions, i.e., phenol and arylamines. Bart J (2005) Additives in polymers industrial analysis and applications. John WUey and Sons, New York. Zaiko GE (ed) (1995) Degradation and stabilization of polymers. Nova Science Publishers Inc., New York. 

Synthesis.—series of poly(arylaminophosphazene) copolymers have been prepared by allowing mixtures of two arylamines to react completely with poly(dichlorophosphazene). The substituent ratios of the copolymers formed, examined by high temperature proton n.m.r. spectroscopy, generally reflect the expected steric and electronic eifects on the relative reactivities of the aiylamines studied. The copolymers were found to have intrinsic viscosities of 0.64— 1.25 dl/g, Tg of 75 to 104 °C and decomposition temperatures of 220— 260 °C. A further series of catalysts for the polymerization of N3P3Q, including aluminium alkyls and alkoxy-derivatives of N3P3Cle, has been proposed. 

Another series of soluble hole-transporting polymers containing pendant arylamine groups were prepared by anionic polymerisation of newly synthesized vinylarylamines [94]. The general structure of the poly(vinylarylamines) reported is shown in Scheme (19). -Buthyllithium was used for the initiation of the anionic polymerization. The molecular weight of the polymers obtained is not high. varies from 5000 to 15,700. The glass... 

Many photoconductive and hole-transporting molecularly doped polymers (i.e. solid solutions of transport-active arylamine containing molecules in an inert polymeric binder, typically polycarbonate) have been studied in detail. Among them are triphenylamine [21, 46], N-iso-propylcarbazole [19, 20], bis(4-N,N-diethylamino-2-methylphenyl)-... 

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