نتایج جستجو برای: phenylene diamine

تعداد نتایج: 5745  

Journal: :Materials advances 2021

Phenylene–ethynylene–anthracene copolymer was used as the emitter in triplet–triplet annihilation upconversion outperforming well-known poly(phenylene–vinylene)s.

Journal: :Chemical communications 2009
Gustavo Fernández Fátima García Fátima Aparicio Emilio Matesanz Luis Sánchez

Nanographite-like lamellae are obtained by the self-assembly of rectangular OPE amphiphiles peripherally decorated with polar and paraffinic chains.

Journal: :Journal of Porphyrins and Phthalocyanines 2021

Increasing the number of meso-methine carbons porphyrin has led to a creation series vinylogous expanded porphyrins, while introduction an ortho-phenylene-unit as pyrrole-connecting two-carbon bridge usually leads prevention effective macrocyclic conjugation. Cyclopentene can serve conjugative increase conjugation owing its cis-geometry. In this work, ortho-phenylene-cyclopentene-bridged tetrap...

Journal: :Molecules 2012
Nadia A Mohamed Mohammad H Sammour Ali M Elshafai

Twelve novel intrinsically colored wholly aromatic azopolyamide-hydrazides containing various proportions of para- and meta-phenylene units were successfully synthesized by a low temperature (-10 °C) solution polycondensation reaction of either 4-amino-3-hydroxybenzhydrazide (4A3HBH) or 3-amino-4-hydroxybenzhydrazide (3A4HBH) with an equimolar amount of either 4,4'-azodibenzoyl chloride (4,4'AD...

2012
Ayman El-Faham Hammed HAM Hassan Sherine N Khattab

UNLABELLED BACKGROUND Many efforts have been recently devoted to design, investigate and synthesize biocompatible, biodegradable polymers for applications in medicine for either the fabrication of biodegradable devices or as drug delivery systems. Many of them consist of condensation of polymers having incorporated peptide linkages susceptible to enzymatic cleavage. Polyamides (PAs) containi...

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