Light‐Induced Deformation of Photoresponsive Liquid Crystals on a Water Surface

Okano, Kunihiko; Shinohara, Masato; Yamashita, Takashi

doi:10.1002/chem.200802461

Cited by 7 publications

(6 citation statements)

References 20 publications

(9 reference statements)

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“…[ 164 ] Okano et al proposed photoinduced expansion and condensation behavior in pure AZ LMWLCs on the surface of water. [ 165 ] The photochemical processes of those AZ LMWLCs with room-temperature LC phases were regarded as the driven force for the light-induced deformation. More interestingly, reversible mechanical bending of platelike microcrystals of a LMW AZ compound was induced upon UV irradiation.…”

Section: Novel Lce Materialsmentioning

confidence: 99%

Photocontrollable Liquid‐Crystalline Actuators

2011

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Section: Novel Lce Materialsmentioning

confidence: 99%

Photocontrollable Liquid‐Crystalline Actuators

2011

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“…They named this phenomenon as the “chromocapillary effect”, and they succeeded in “drawing” several patterns by moving the Petri dish containing the solution (Figure b,c) with a maximal speed of approximately 400 μm·s –1 . Independently, Okano, Yamashita et al described the expansion and the contraction of a liquid crystalline droplet of an azobenzene derivative on a water surface upon irradiation …”

Section: Motion From Photochromic Molecular Switchesmentioning

confidence: 99%

Design of Collective Motions from Synthetic Molecular Switches, Rotors, and Motors

et al. 2019

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Precise control over molecular movement is of fundamental and practical importance in physics, biology, and chemistry. At nanoscale, the peculiar functioning principles and the synthesis of individual molecular actuators and machines has been the subject of intense investigations and debates over the past 60 years. In this review, we focus on the design of collective motions that are achieved by integrating, in space and time, several or many of these individual mechanical units together. In particular, we provide an in-depth look at the intermolecular couplings used to physically connect a number of artificial mechanically active molecular units such as photochromic molecular switches, nanomachines based on mechanical bonds, molecular rotors, and light-powered rotary motors. We highlight the various functioning principles that can lead to their collective motion at various length scales. We also emphasize how their synchronized, or desynchronized, mechanical behavior can lead to emerging functional properties and to their implementation into new active devices and materials.

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“…[3][4][5][6][7] The LC droplet on a water surface continuously underwent a flattening of its lens shape and became larger upon photoirradiation. The final area of the LC droplet is 6-7 times larger than the initial state after expansion.…”

Section: Takashi Yamashitamentioning

confidence: 99%