@article {46059,
	title = {New cardo bisphenol monomer containing pendant azido group and the resulting aromatic polyesters},
	journal = {Journal of Polymer Science Part A-Polymer Chemistry},
	volume = {57},
	year = {2019},
	month = {JUL },
	pages = {1516-1526},
	type = {Article},
	abstract = {<p>Expanding on our strategy to synthesize aromatic step-growth polymers containing pendant clickable azido groups via functional monomer approach, we have now designed and synthesized a new cardo bisphenol, viz., 2-(2-azidoethyl)-3, 3-bis(4-hydroxyphenyl) isoindolin-1-one (PPH-N-3). PPH-N-3 was conveniently synthesized starting from commercially available phenolphthalein by a three-step route in an overall yield of 65\% using simple organic transformations. Aromatic (co)polyesters bearing pendant azido groups were synthesized by low-temperature solution polycondensation of PPH-N-3 or different molar ratios of PPH-N-3 and bisphenol-A (BPA) with aromatic diacid chlorides in dry dichloromethane in the presence of triethylamine (TEA) as a base. The formation of medium to reasonably high-molecular-weight (co)polyesters was evidenced from intrinsic viscosity and number-average molecular-weight measurements that were in the range 0.52-0.85 dL/g and 16,700-28,200, respectively. Tough, transparent, and flexible films could be cast from chloroform solutions of these (co)polyesters. (Co)polyesters were characterized using FTIR, H-1 NMR, C-13 NMR spectroscopy, XRD, and TGA. The thermal curing reaction of (co)polyesters involving decomposition of azido groups was studied by DSC analysis. The chemical modification of a representative copolyester containing pendant azido groups was carried out quantitatively using catalyst-free azide-maleimide cycloaddition reaction with two maleimides, namely, N-methylmaleimide and N-hexylmaleimide. (c) 2019 Wiley Periodicals, Inc.</p>
},
	keywords = {aromatic (co)polyester, azido group, cardo bisphenol, Chemical modification},
	issn = {0887-624X},
	doi = {10.1002/pola.29414},
	author = {Maher, Deepak M. and Nagane, Samadhan S. and Jadhav, Uday A. and Salunkhe, Pravin H. and Tawade, Bhausaheb V. and Wadgaonkar, Prakash P.}
}
@article {48145,
	title = {Pendant propargyloxy-functionalized aromatic (co)polycarbonates: synthesis, thermal crosslinking and chemical modification},
	journal = {Journal of Macromolecular Science Part A-Pure and Applied Chemistry},
	volume = {59},
	year = {2022},
	month = {NOV},
	pages = {752-763},
	type = {Article},
	abstract = {<p>
	A bisphenol monomer bearing pendant propargyloxy group viz, 1, 1-bis (4-hydoxyphenyl)-1-(4 {\textquoteleft}-propargyloxyphenyl) ethane (BPP) was synthesized starting from commercially available 1, 1, 1-tris (4-hydroxyphenyl) ethane (THPE) by mono O-propargylation reaction using propargyl bromide. A new series of pendant propargyloxy-functionalized aromatic (co)polycarbonates was synthesized by low-temperature solution polycondensation of BPP or different molar ratios of BPP and bisphenol-A with triphosgene in dichloromethane in the presence of triethylamine. The formation of reasonably high molecular weight (co)polycarbonates was confirmed by inherent viscosity (0.52-0.83 dL/g) and gel permeation chromatography (M-n 37,000-69,800 g/mol, polystyrene standards) measurements. C-13 NMR spectral studies supported formation of random copolycarbonates in copolymerization of BPP and BPA with triphosgene. The 10\% weight loss temperature (T-10) values of (co)polycarbonates, determined by thermogravimetric analysis under nitrogen atmosphere, were in the range 427-438 degrees C indicating their good thermal stability. The glass transition temperature (T-g) values of (co)polycarbonates were observed in the range 147-152 degrees C. The crosslinking ability of (co)polycarbonates involving pendant propargyloxy groups leading to formation of networked structure was evaluated via non-isothermal curing studies by DSC. As a proof-of-concept, the post-modification of a representative polycarbonate bearing pendant propargyloxy groups with 1-octane thiol as a model compound via thiol-yne click reaction was briefly studied.</p>
},
	keywords = {Aromatic polycarbonate, Chemical modification, propargyloxy groups, thermal crosslinking, thiol-yne click reaction},
	issn = {1060-1325},
	doi = {10.1080/10601325.2022.2117055},
	author = {Nagane, Samadhan S. and Maher, Deepak M. and Verma, Savita and Talanikar, Aniket A. and Wadgaonkar, Prakash P.}
}
