Light-driven flagella-like motion of coordination compound single crystals

Ekka, Akansha; Kurakula, Uma; Choudhury, Aditya; Mishra, Anshumika; Faye, Anshul; Halcovitch, Nathan R.; Medishetty, Raghavender

doi:10.1039/d3cc00333g

Cited by 5 publications

(5 citation statements)

References 44 publications

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“…In order to create uniform crystalline microstructures, we employed the seeded growth method using an aqueous surfactant 40 . The surfactant used in this study was a mixture of SDS (sodium dodecyl sulfate) and 1-DD (1-dodecanol) previously employed to grow uniform-shaped microcrystals form various organic compounds 29,[41][42][43] . To initiate the process, we prepared a solution of trans-ATF in N,N-DMF (N,Ndimethylformamide) with a concentration of 1 mg ATF per 0.035 mL DMF.…”

Section: Methodsmentioning

confidence: 99%

Photoisomerization-Induced Melting and Spontaneous Crystallization in Acicular Star-Shaped Microcrystals

Lam,

Islam,

Bushnak

et al. 2023

Preprint

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In recent years, significant advancements have occurred in the development of smart materials, particularly in creating molecular crystals that can convert light energy into mechanical work. In this study, we focus on the synthesis, characterization, and photomechanical behavior of a new molecule, bis(2,2,2-trifluoroethyl) (E)-2-(3-(anthracen-9-yl)allylidene)malonate (trans-ATF), which is capable of forming acicular star-shaped microcrystals resembling sea Urchins. These crystals are formed via the seeded growth method from aqueous surfactant solution. When these microcrystals are exposed to visible light while suspended in an aqueous medium, they undergo a process in which the tips of these microcrystals temporarily become liquid and move inward towards the center. This transformation is initiated by the photoisomerization of trans-ATF to cis-ATF when absorbing visible light. After this phase, the melted crystals quickly return to their solid state in less than a minute while maintaining a balance between the two different photoisomers of the ATF molecule. In the presence of suspended silica microspheres, the star-shaped trans-ATF microcrystals undergo a similar melting process induced by visible light. During this process, the melted branches capture and pull these suspended silica microspheres towards the center of the molten crystal structure. This leads to the silica microspheres becoming enclosed within the molten crystal, which then solidifies again

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Section: Methodsmentioning

confidence: 99%

Photoisomerization-Induced Melting and Spontaneous Crystallization in Acicular Star-Shaped Microcrystals

Lam,

Islam,

Bushnak

et al. 2023

Preprint

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“…The crystals of these complexes exhibit flagella-like bending towards and away from the excitation light source. 66 They observed that the mechanical movements during the photoreaction are morphology driven. Thinner crystals show better motion over longer distances, while thicker crystals exhibit slower and minimal motion.…”

Section: [2+2] Photodimerizationmentioning

confidence: 99%

Photomechanical properties in metal–organic crystals

Khan,

Mir

2024

Chem. Commun.

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“…Dynamic crystals have become a research forefront due to their potential applications in bionic robots, micromachines, smart actuators, and other smart devices. , Macroscopic effects of dynamic crystals can be expressed as mechanical motions under external stimuli including light, force, heat, electricity, and chemical agents. , As one of the important dynamic crystals, photo-driven dynamic crystals have presented many conspicuous advantages such as remotely controllable manipulation, noncontact stimulus, safety, and convenience of the light source. , In addition, densely ordered molecular packing in the crystal lattice endows them with fast response speed, efficient energy transfer, and accurate motion properties . However, unlike polymers, gels, and metals with innate flexibility, most organic crystals are brittle under external forces, which greatly restricts their applications in flexible smart materials .…”

Section: Introductionmentioning

confidence: 99%

“…3,4 As one of the important dynamic crystals, photo-driven dynamic crystals have presented many conspicuous advantages such as remotely controllable manipulation, noncontact stimulus, safety, and convenience of the light source. 5,6 In addition, densely ordered molecular packing in the crystal lattice endows them with fast response speed, efficient energy transfer, and accurate motion properties. 7 However, unlike polymers, gels, and metals with innate flexibility, most organic crystals are brittle under external forces, which greatly restricts their applications in flexible smart materials.…”

Section: Introductionmentioning

confidence: 99%

Designing Dynamic Crystals with Multiple Flexibilities through a Cocrystal Strategy for Flexible Photo-controlled Switches

Chen,

Wu,

Zhao

et al. 2023

Crystal Growth & Design

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Endowing function crystals with flexibility can further extend their applications in the field of flexible smart devices. Herein, a brittle, photo-driven dynamic crystal was successfully modified into flexible dynamic crystals through a cocrystal strategy. The fluorescence and photo-response properties of the crystals were simultaneously improved. More importantly, the cocrystals can exhibit rare multiple flexibilities, including 2D elastic bending and twistable deformation properties, which have not been reported before for cocrystals. The mechanisms of 2D elastic bending and twistable properties were investigated through detailed crystallographic analysis, experimental tests, and theoretical calculations. It was found that the 2D elastic bending can be attributed to strong π-stacked columns connecting weak molecular interactions and herringbone molecular arrangements in the cocrystals. The twistable deformation properties are closely related to the different orientations of intermolecular interactions and molecular rotation without spatial hindrance. Finally, taking advantage of the multiple flexibilities of the cocrystals, a flexible photo-controlled switch was designed and tested.

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Light-driven flagella-like motion of coordination compound single crystals

Abstract: Single crystals of coordination complexes showing mechanical motion under the influence of external stimuli are of great interest due to their applications. Especially light-driven systems such as photoactuators, switches, and...

Cited by 5 publications

References 44 publications

Photoisomerization-Induced Melting and Spontaneous Crystallization in Acicular Star-Shaped Microcrystals

Photoisomerization-Induced Melting and Spontaneous Crystallization in Acicular Star-Shaped Microcrystals

Photomechanical properties in metal–organic crystals

Designing Dynamic Crystals with Multiple Flexibilities through a Cocrystal Strategy for Flexible Photo-controlled Switches

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