Multifunctional materials based on polyazomethines derived from 2,5‐dihydroxy‐1,4‐benzoquinone and siloxane diamines

Abstract

New polyazomethines have been synthesized by the reaction between 2,5‐dihydroxy‐1,4‐benzoquinone and siloxane diamines differing by the siloxane sequence length. A dimer has also been prepared as a model compound. The products were characterized by spectral (FTIR and 1H‐NMR) and elemental analyses, GPC, viscosity measurements, solubility tests, and transmission electron microscopy (TEM). The different properties have been investigated by adequate techniques: thermal (DSC and TGA), spectral (UV–vis and fluorescence spectroscopy), redox (Differential Pulse Voltammetry). pH‐sensitivity and metal complexing ability were also evaluated. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 1862–1872, 2008

A silicon-containing polyazomethine and derived metal complexes: synthesis, characterization, and evaluation of the properties

“…[7,9,15] There are some possibilities to improve this behavior of the polyazomethines, one of the approaches consisting in the insertion of the bulky groups or flexible moieties either within the chain or in lateral position obstructing packaging polymer chains. We have previously published a number of studies on the synthesis and study of polyazomethines-containing flexible dimethylsiloxane fragments coming either from amine [16][17][18] or carbonyl [19,20] derivatives and some of their metal complexes.…”

Neural network modeling of the preparation process of a siloxane‐organic polyazomethine

“…Several alternative synthetic strategies such as creation of the molecular asymmetry by incorporating of noncoplanar groups in the main chain, attaching the bulky pendant groups, for instance, the introduction of substituents (alkyl or alkoxy groups) in the ortho-position of the aromatic ring or insertion of aliphatic flexible spacers between aromatic rings within the main chain are approached. 18 Siloxane moiety had also inserted as a flexible spacer, either in the amine or carbonyl component, resulting in polyazomethines with improved solubility [19][20][21][22][23][24][25] because of high flexibility of the siloxane bond and weak intermolecular interactions between dimethylsiloxane units. 4,17 The inclusion of polyazomethines in rotaxane architecture is another strategy approached to improve their processability.…”

“…4,17 The inclusion of polyazomethines in rotaxane architecture is another strategy approached to improve their processability. 18 Siloxane moiety had also inserted as a flexible spacer, either in the amine or carbonyl component, resulting in polyazomethines with improved solubility [19][20][21][22][23][24][25] because of high flexibility of the siloxane bond and weak intermolecular interactions between dimethylsiloxane units.…”

New siloxane-containing iron(III) carboxylate clusters

“…Siloxane-organic copolymers containing metals have been reported [16,17] and the complexation behavior of siloxane-organic ligands has been investigated [18e22].…”