@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.}
}
@article { ISI:000349069300003,
	title = {Ionic conductivity probed in main chain liquid crystalline azobenzene polyesters},
	journal = {Journal of Polymer Science Part A-Polymer Chemistry},
	volume = {53},
	number = {5},
	year = {2015},
	month = {MAR},
	pages = {629-641},
	publisher = {WILEY-BLACKWELL},
	address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA},
	abstract = {<p>Three main chain thermotropic liquid crystalline (LC) azobenzene polymers were synthesized using the azobenzene twin molecule (P4P) having the structure Phenylazobenzene-tetraethyleneglycol-Phenylazobenzene as the AA monomer and diols like diethylene glycol, tetraethylene glycol (TEG), and hexaethylene glycol as the BB comonomer. Terminal C(O)OMe units on P4P facilitated transesterification with diols to form polyesters. All polymers exhibited stable smectic mesophases. One of the polymers, Poly(P4PTEG) was chosen to prepare composite polymer electrolytes with LiCF3SO3 and ionic conductivity was measured by ac impedance spectroscopy. The polymer/0.3 Li salt complex exhibited a maximum ionic conductivity in the range of 10(-5) S cm(-1) at room temperature (25 degrees C), which increased to 10(-4) S cm(-1) above 65 degrees C. The temperature dependence of ionic conductivity was compared with the phase transitions occurring in the sample and it was observed that the glass transition had a higher influence on the ionic conductivity compared to the ordered LC phase. Reversible ionic conductivity switching was observed upon irradiation of the polymer/0.3 Li salt complex with alternate UV and visible irradiation. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 629-641</p>},
	keywords = {azo polymers, glass transition, liquid-crystalline polymers (LCP)},
	issn = {0887-624X},
	doi = {10.1002/pola.27484},
	author = {Nardele, Chinmay G. and Dhavale, Vishal M. and Sreekumar, K. and Asha, S. K.}
}
