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Synthesis and characterization of novel poly(amide-ether)s bearing imidazole pendants: study of physical and optical properties.
- Source :
-
Polymer Bulletin . Apr2013, Vol. 70 Issue 4, p1125-1142. 18p. - Publication Year :
- 2013
-
Abstract
- Two new para-linked diether-diamines, bis(4-(4-amino-2-(4,5-diphenyl-1H-imidazol-2-yl)phenoxy) phenyl)methanone and bis(4-(4-amino-2-(4,5-diphenyl-1H-imidazol-2-yl)phenoxy) phenyl)hexafluoropropane, bearing two ortho-linked phenyl-substituted imidazole pendants and trifluoromethyl groups were synthesized by the nucleophilic chlorodisplacement reaction of the synthesized 2-(2-chloro-5-nitrophenyl)-4,5-diphenyl-1H-imidazole with 4,4′-dihydroxybenzophenone or 4,4′-(hexafluoroisopropylidene)diphenol in refluxing DMAc in the presence of potassium carbonate. These diamines were utilized to prepare a series of novel poly(amide-ether)s (PAEs) via direct phosphorylation polycondensation with aliphatic and aromatic dicarboxylic acids. The polymeric samples were readily soluble in a variety of organic solvents and formed low-colored and flexible thin films via solution casting. These polymers showed glass-transition temperatures ( Ts) between 204 and 308 °C. Thermal behaviors of the PAEs were characterized by thermogravimetric analysis, and the 10 % weight loss temperatures were found to be in the range of 330-450 °C in N. The PAEs exhibited fluorescence emission in solution and in solid state with maxima around 423-494 nm and with the quantum yields in the range of 6-28 %. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01700839
- Volume :
- 70
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Polymer Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 85986714
- Full Text :
- https://doi.org/10.1007/s00289-012-0892-x