@article {44459,
	title = {Effect of crystal packing on the thermosalient effect of the pincer-type diester naphthalene-2,3-diyl-bis(4-fluorobenzoate): a new class II thermosalient solid},
	journal = {Chemistry-A European Journal},
	volume = {24},
	year = {2018},
	month = {MAR},
	pages = {4133-4139},
	abstract = {The pincer-like double ester naphthalene-2,3-diyl-bis(4-fluorobenzoate) (2) is pentamorphic. Upon heating crystals of form I to below their melting point (441-443 K), they undergo a phase transition accompanied by a thermosalient effect, that is, rare and visually striking motility whereby the crystals jump or disintegrate. The phase transition and the thermosalient effect are reversible. Analysis of the crystal structure revealed that form I is a class II thermosalient solid. Crystals of form III also underwent a reversible phase transition in the temperature range of 160 to 170 K; however, they were not thermosalient. Comparison of the structures and the mechanical responses of the two polymorphs revealed that the thermosalient effect of form I was due to reversible closing and opening of the arms of the diester molecules in a tweezer-like action.},
	doi = {10.1002/chem.201705586},
	author = {Tamboli, Majid I. and Karothu, Durga Prasad and Shashidhar, Mysore S. and Gonnade, Rajesh G. and Naumov, Pance}
}
@article {46118,
	title = {Crystalline acylhydrazone photoswitches with multiple mechanical responses},
	journal = {Crystal Growth \& Design},
	volume = {19},
	year = {2019},
	month = {MAY},
	pages = {3039-3044},
	type = {Article},
	abstract = {<p>The advancement of our understanding of stimuli responsive molecular crystals has led to the realization that they hold great yet unexplored potential as adaptive materials. Although molecular crystals that exhibit a single mechanical response to a single input stimulus are now abundant, crystals that are capable of response to multiple stimuli are rather scarce. Here we report two photoswitchable acylhydrazone derivatives, Ac-1 and Ac-2, which respond to light as well as to mechanical force. Upon application of localized mechanical stress, the anhydrous (Ac-1a) and monohydrate (Ac-1h) crystals of Ac-1 undergo plastic shearing deformation and bending, whereas monohydrate crystals of Ac-2 undergo elastic deformation. When they are exposed to UV light, crystals of Ac-1h and Ac-2 undergo photoinduced bending; on the other hand, crystals of Ac-1a and thicker crystals of Ac-2 exhibit photosalient effect (light-induced leaping). It is demonstrated that the synergistic action of multiple stimuli (UV light and force) elicits enhanced mechanical response, and this strategy could be employed in the future to increase the efficacy of single crystal actuators.</p>
},
	issn = {1528-7483},
	doi = {10.1021/acs.cgd.8b01860},
	author = {Gupta, Poonam and Panda, Tamas and Allu, Suryanarayana and Borah, Silpisikha and Baishya, Anamika and Gunnam, Anilkumar and Nangia, Ashwini and Naumov, Pance and Nath, Naba K.}
}
