Thermally induced and photoinduced mechanical effects in molecular single crystals—a revival

Nath, N.; Panda, Manas K.; Sahoo, Subash Chandra; Naumov, Panče

doi:10.1039/c3ce41313f

Cited by 225 publications

(242 citation statements)

References 63 publications

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“…Oft derided as a "chemical cemetery" after Leopold Ruzicka's famous remark, crystal machines have witnessed a remarkable resurgence in recent years with discoveries of controlled or spontaneous actuation, reversible or irreversible movements, and reactivity. [186][187][188] Research efforts towards molecular machines fashioned from crystals can be subdivided into two broad classes: one in which movable elements are present in the crystal lattice and the other where the entire crystal becomes a machine.…”

Section: Acs Nanomentioning

confidence: 99%

Controlling Motion at the Nanoscale: Rise of the Molecular Machines

et al. 2015

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As our understanding and control of intra- and intermolecular interactions evolve, ever more complex molecular systems are synthesized and assembled that are capable of performing work or completing sophisticated tasks at the molecular scale. Commonly referred to as molecular machines, these dynamic systems comprise an astonishingly diverse class of motifs and are designed to respond to a plethora of actuation stimuli. In this Review, we outline the conditions that distinguish simple switches and rotors from machines and draw from a variety of fields to highlight some of the most exciting recent examples of opportunities for driven molecular mechanics. Emphasis is placed on the need for controllable and hierarchical assembly of these molecular components to display measurable effects at the micro-, meso-, and macroscales. As in Nature, this strategy will lead to dramatic amplification of the work performed via the collective action of many machines organized in linear chains, on functionalized surfaces, or in three-dimensional assemblies.

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Section: Acs Nanomentioning

confidence: 99%

Controlling Motion at the Nanoscale: Rise of the Molecular Machines

et al. 2015

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“…A n important challenge in molecular materials science is the design of functional compounds whose physical properties can be controlled by external stimuli -making them promising for a range of practical applications [1][2][3][4][5][6][7][8][9][10][11][12][13] . Numerous molecular materials exhibiting various switching effects in their electronic, magnetic, optical and mechanical properties -controlled through a variety of phenomena -have recently been reported, and are herein called dynamic molecular crystals (Fig.…”

mentioning

confidence: 99%

Dynamic molecular crystals with switchable physical properties

2016

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The development of molecular materials whose physical properties can be controlled by external stimuli - such as light, electric field, temperature, and pressure - has recently attracted much attention owing to their potential applications in molecular devices. There are a number of ways to alter the physical properties of crystalline materials. These include the modulation of the spin and redox states of the crystal's components, or the incorporation within the crystalline lattice of tunable molecules that exhibit stimuli-induced changes in their molecular structure. A switching behaviour can also be induced by changing the molecular orientation of the crystal's components, even in cases where the overall molecular structure is not affected. Controlling intermolecular interactions within a molecular material is also an effective tool to modulate its physical properties. This Review discusses recent advances in the development of such stimuli-responsive, switchable crystalline compounds - referred to here as dynamic molecular crystals - and suggests how different approaches can serve to prepare functional materials.

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“…While there are reports on the photomechanical bending induced by linkage isomerism [1][2][3], valence tautomerism [4], and charge transfer [5][6][7], Kobatake, Irie, and co-workers have reported the rapid and reversible crystal shape change of photochromic diarylethene crystals in 2007 [8]. The photomechanical crystals have attracted much attention because they can work without any direct contact or electrical wires [9].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of Photoinduced Bending Speed of Diarylethene Crystals

et al. 2015

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Abstract:We investigated photoinduced crystal bending behavior of various photochromic diarylethenes. In all the diarylethene derivatives we used in this work, the relationship between the initial photoinduced bending speed and the crystal thickness was well explained by the easy-handled Timoshenkoʼs bimetal model. Moreover, we proposed a quantitative analysis method to reveal the relationship between the bending speed and the molecular structure of diarylethenes. These results provide the quantitative evaluation method of the photoinduced crystal bending speed.

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Thermally induced and photoinduced mechanical effects in molecular single crystals—a revival

Cited by 225 publications

References 63 publications

Controlling Motion at the Nanoscale: Rise of the Molecular Machines

Controlling Motion at the Nanoscale: Rise of the Molecular Machines

Dynamic molecular crystals with switchable physical properties

Quantitative Evaluation of Photoinduced Bending Speed of Diarylethene Crystals

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