@article { ISI:000242468700074,
	title = {Synthesis and characterization of cholesteric thermotropic liquid crystalline polyesters},
	journal = {Journal of Applied Polymer Science},
	volume = {103},
	number = {2},
	year = {2006},
	month = {JAN},
	pages = {1232-1237},
	publisher = {WILEY-BLACKWELL},
	type = {Article},
	address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA},
	abstract = {<p>Cholesteric liquid crystalline polyesters were successfully synthesized from isosorbide, methyl hydroquinone, and isophthaloyl chloride. Homo/copolyesters were synthesized by the solution polycondensation method, for which a mild organic base such as pyridine was employed. Inherent viscosities of polyesters P-3-P-5 were in the range of 0.31-0.39 dL/g at 25 degrees C in chloroform, and polyesters P-1 and P-2 were insoluble in chloroform. Homo/copolyesters based on isosorbide, methyl hydroquinone, and isophthalic acid had thermal stability at more than 300 degrees C on the basis of 10\% weight loss. The thermotropic liquid crystalline properties were examined by differential scanning calorimetry and polarizing optical microscopy. Wide-angle X-ray diffraction study demonstrated that polyesters P-1, P-2, and P-3 were semicrystalline, whereas the degree of crystallinity of polyesters P-4 and P-5 was less than 5\%. Copolyester P-4 showed formation of a yellow iridescent streak at 209 degrees C on heating and development of a Grand-jean texture at 270 degrees C on heating. These are typical textures of the cholesteric liquid crystalline phase. (c) 2006 Wiley Periodicals, Inc.</p>},
	keywords = {cholesteric liquid crystalline polymers (ChLCP), Differential scanning calorimetry (DSC), optical microscopy, solution polycondensation, Thermogravimetric analysis (TGA), viscosity},
	issn = {0021-8995},
	doi = {10.1002/app.24610},
	author = {Jadhav, Sushilkumar A. and Chougule, Rahul R. and Shinde, Yogesh A. and Chavan, Nayaku}
}
@article {48138,
	title = {Synthesis, characterization and UV-crosslinking of aromatic (Co)polycarbonates bearing pendant azido groups},
	journal = {ChemistrySelect},
	volume = {7},
	year = {2022},
	month = {SEP},
	pages = {e202201020},
	type = {Article},
	abstract = {<p>
	A new series of (co)polycarbonates bearing pendent azido groups was synthesized by polycondensation of varying molar proportions of 4, 4{\textquoteright}-(5-azidopentane-2, 2-diyl) diphenol and bisphenol-A with triphosgene. The chemical structures, compositions and random nature of (co)polycarbonates were confirmed by NMR spectroscopy. Inherent viscosities and number-average molecular weights of (co)polycarbonates were in the range 0.63-0.77 dL g(-1) and 35,400-43,400 g mol(-1), respectively indicating the formation of reasonably high molecular weight polymers. (Co)polycarbonates could be cast into tough, transparent and flexible films from chloroform solutions. (Co)polycarbonates were further characterized using IR spectroscopy, XRD, TGA and DSC. The thermal crosslinking of (co)polycarbonates bearing pendant azido groups was studied by DSC analysis. Independently, (co)polycarbonates bearing pendant azido groups were exposed to UV irradiation at wavelength of 254 nm and decomposition reaction of azido groups was monitored by FT-IR spectroscopy. The complete decomposition of azido groups was observed with exposure time of 30 min. The formed cross-linked (co)polycarbonates exhibited improved \% char yield values compared to parent (co)polycarbonates. The measurement of mechanical properties of representative crosslinked (co)polycarbonates indicated increase in tensile strength and Young{\textquoteright}s modulus and decrease in \% elongation compared to corresponding parent linear (co)polycarbonates.</p>
},
	keywords = {Aromatic polycarbonate, Pendant azido group, solution polycondensation, Triphosgene, UV-crosslinking},
	issn = {2365-6549},
	doi = {10.1002/slct.202201020},
	author = {Nagane, Samadhan S. and Kuhire, Sachin S. and Ichake, Amol B. and Talanikar, Aniket A. and Lochab, Bimlesh and Wadgaonkar, Prakash P.}
}
