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A new aromatic diamine, 2,3-bis(4-(4-amino-2-(trifluoromethyl) phenoxy)phenyl)naphtho[2,3-f]quinoxaline-7,12-dione, was synthesized and fully characterized by using FTIR, 1H and 13C NMR, DEPT technique, and elemental analysis. A series of novel fluorescent anthraquinone-quinoxaline containing polyamides (PAs) with inherent viscosities of 0.39-0.62 dL/g was prepared by direct polycondensation of the diamine with various dicarboxylic acids. These PAs were readily soluble in many polar aprotic organic solvents and could be solution-cast into tough and flexible films. The PAs exhibited glass transition temperatures ( T g)s between 230 and 323°C, and 10% weight loss temperatures in the range of 362-433°C in N2. All of the PAs have fluorescence emission in solution and in solid state with maxima around 452-510 nm and with the quantum yields in the range of 6-17%. Also, cyclic voltammetry (CV) method was used to study the electrochemical oxidation behavior of these polymers at the surface of a modified multiwalled carbon nanotube (MWCNT)s glassy electrode. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 [ABSTRACT FROM AUTHOR]

New unsymmetrical diamine monomer containing triaryl pyridine pendent group, 2,4‐diaminophenyl [4‐(2, 6‐diphenyl‐4‐pyridyl) phenyl]ether, was synthesized via aromatic substitution reaction of 1‐chloro‐2,4‐dinitrobenzene with 4‐(2,6‐diphenyl‐4‐pyridyl) phenol, followed by Pd/C‐catalyzed hydrazine reduction. Five Polyamides (PA) were prepared by the phosphorylation polycondensation of different dicarboxylic diacids with the diamine. Inherent viscosities of PAs were in the range 0.51–0.59 g/dL indicating formation of medium molecular weight polymers. The weight and number average molecular weights of a PA, (PA‐d), determined by GPC were 6944 g/mol and 17,369 g/mol, respectively. PAs exhibited glass‐transition temperatures (Tg) in the range 140–235°C. These polymers, essentially amorphous, were soluble in polar aprotic solvents such as DMF, NMP, DMAc, DMSO, pyridine, m‐cresol, and THF. The initial decomposition temperatures (Ti) of PAs, determined by TGA in air, were in the range 300–380°C indicating their good thermal stability. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 [ABSTRACT FROM AUTHOR]