@article {46822,
	title = {Rapid synthesis of zwitterionic phosphonium benzoates by a three-component coupling involving phosphines, arynes and CO2},
	journal = {Chemistry-An Asian Journal},
	volume = {15},
	year = {2020},
	month = {JUL},
	pages = {2203-2207},
	type = {Article},
	abstract = {<p>A mild and easy to perform multicomponent coupling involving phosphines, arynes generated from 2-(trimethylsilyl)aryl triflates, and CO(2)allowing the transition-metal-free synthesis of zwitterionic phosphonium benzoates has been developed. The reaction proceeds via the generation of 1 : 1 zwitterionic intermediates from phosphines and arynes followed by the interception with CO(2)to deliver the carboxylates in moderate to good yields instead of the anticipated benzooxaphosphol-3(1H)-ones.</p>
},
	keywords = {arynes, Carbon dioxide, multicomponent coupling, Phosphines, zwitterions},
	issn = {1861-4728},
	doi = {10.1002/asia.202000610, Early Access Date = JUN 2020},
	author = {Bhattacharjee, Subrata and Raju, Anjali and Gaykar, Rahul N. and Gonnade, Rajesh G. and Roy, Tony and Biju, Akkattu T.}
}
@article {47742,
	title = {Organic-inorganic perovskitoid with zwitterion cysteamine linker and its crystal-crystal transformation to ruddlesden-popper phase},
	journal = {Angewandte Chemie-International Edition},
	volume = {60},
	year = {2021},
	month = {AUG },
	pages = {18750-18760},
	type = {Article},
	abstract = {We demonstrate synthesis of a new low-D hybrid perovskitoid (a perovskite-like hybrid halide structure, yellow crystals, P21/n space group) using zwitterion cysteamine (2-aminoethanethiol) linker, and its remarkable molecular diffusion-controlled crystal-to-crystal transformation to Ruddlesden-Popper phase (Red crystals, Pnma space group). Our stable intermediate perovskitoid distinctly differs from all previous reports by way of a unique staggered arrangement of holes in the puckered 2D configuration with a face-sharing connection between the corrugated-1D double chains. The PL intensity for the yellow phase is 5 orders higher as compared to the red phase and the corresponding average lifetime is also fairly long (143 ns). First principles DFT calculations conform very well with the experimental band gap data. We demonstrate applicability of the new perovskitoid yellow phase as an excellent active layer in a self-powered photodetector and for selective detection of Ni2+ via On-Off-On photoluminescence (PL) based on its composite with few-layer black phosphorous.},
	keywords = {Crystal growth, organic-inorganic hybrid composites, perovskite phases, photodetectors, zwitterions},
	issn = {1433-7851},
	doi = {10.1002/anie.202105918},
	author = {Kour, Prachi and Reddy, Mallu Chenna and Pal, Shiv and Sidhik, Siraj and Das, Tisita and Pandey, Padmini and Mukherjee, Shatabdi Porel and Chakraborty, Sudip and Mohite, Aditya D. and Ogale, Satishchandra}
}
@article {48453,
	title = {Synthesis of N-oxyethylene substituted imidazolium-based zwitterions as a recyclable solvent for cellulose dissolution},
	journal = {Cellulose},
	volume = {30},
	year = {2023},
	month = {JAN},
	pages = {87-109},
	type = {Article},
	abstract = {<p>
	Cellulose is a readily available, renewable, and natural biomaterial that has the potential to replace synthetic fibres. However, their processing to shaped materials such as fibre or film is still complex and restricted due to its insolubility in most conventional solvents. Herein, we present the synthesis and cellulose dissolution characteristics of a new class of recyclable zwitterions composed of tethered N-oxyethylene substituted imidazolium cation and alkyl carboxylate anion. Investigations on cellulose dissolution showed that increasing the alkyl chain length of carboxylate anion and introduction of oxyethylene unit on imidazolium ring led to better cellulose dissolution ability, and up to 12\% (w/w) cellulose could be dissolved in aqueous zwitterions at 105 degrees C. The thermal behavior of zwitterions and their cellulose solutions was characterized by TGA and found to be more stable than the NMMO and Lyocell solutions. Rheological characterization of cellulose solutions revealed viscoelastic behavior and zero shear viscosity of 6-12\% (w/w) cellulose solution in hexanoate containing aqueous zwitterion was 555 to 5900 Pa.s at 120 degrees C. The characteristics of cellulose solution indicate its potential for processing to cellulose fibre by extrusion through a tiny spinneret. Physico-chemical analysis of regenerated cellulose indicates that zwitterions cause no adverse effect on cellulose structure and morphology during dissolution. The zwitterions are recovered after the cellulose regeneration process, and the recovery was found to be 99.6\% after purification using the ion-exchange method.</p>
},
	keywords = {Carboxylate anion, Cellulose dissolution, Oxyethylene unit, Regenerated cellulose, Rheology, zwitterions},
	issn = {0969-0239},
	doi = {10.1007/s10570-022-04883-1},
	author = {Jadhav, Sachin and Ganvir, Vivek and Singh, Madan Kumar and Shanmuganathan, Kadhiravan}
}
