@article { ISI:000247807900003,
	title = {Synthesis and characterization of novel polyurethanes based on 4,4 {\textquoteleft}-[1,4-phenylenedi-diazene-2,1-dlyl] bis(2-carboxyphenol) and 4,4 {\textquoteleft}-[1,4-phenylenedi-diazene-2,1-diyl] bis(2-chlorophenol) hard segments},
	journal = {Reactive \& Functional Polymers},
	volume = {67},
	number = {6},
	year = {2007},
	month = {JUN},
	pages = {503-514},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Eight novel polyurethanes (PUs) based on 4,4{\textquoteright}-[1,4-phenylenedi-diazene-2,1-diyl]bis(2-carboxyphenot) and 4,4{\textquoteright}-[1,4phenylenedi-diazene-2,1-diyl]bis(2-chloro- phenol) as hard segments with four diisocyanates viz., 4,4-diphenyl-methane diisocyanate, toluene 2,4-diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate were prepared. Structural and thermal characterization of the segmented PUs were determined by FT-IR, UV spectrophotometry, fluoroscence spectroscopy, H-1 NMR, C-13 NMR spectroscopy and DTA/TGA analysis. All the PUs contain domains of semi-crystalline and amorphous structures, as indicated by X-ray diffraction. PUs were soluble in polar aprotic solvents like N-methyl-2-pyrrolidone (NMP), dimethyl formamide (DMF) and dimethylsulfoxide (DIVISO). (c) 2007 Elsevier Ltd. All rights reserved.</p>},
	keywords = {azo polymers, fluorescence, hard segments, Morphology, phase separation, polyurethanes, spectroscopy, Thermal properties},
	issn = {1381-5148},
	doi = {10.1016/j.reactfunctpolym.2007.02.003},
	author = {Raghu, A. V. and Gadaginamath, G. S. and Mathew, Nevin T. and Halligudi, Shivaraj B. and Aminabhavi, Tejraj M.}
}
