Excellent photo actuation in crystal-polymer composite by transfer of mechanical energy

Singh, Manjeet; Abhijitha, V G; Nanda, B. R. K.; Pareek, Deval; Nath, Satyapriya; Anwar, Sharmistha; Kumar, Arun; Nanda, Prasant Kumar; Sahoo, Subash Chandra

doi:10.1016/j.cej.2023.142665

Cited by 8 publications

(6 citation statements)

References 62 publications

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“…79 A slight alteration in the coordination of synthesized a Co(III) complex with potassium dinitrobenzoate as an external anion (Co-dnb), which was then mixed with PVA, PVDF, and agarose to fabricate three crystal−polymer films. 80 The PVA-based film exhibited the least photomechanical bending angle, while the agarose-based film showed the highest bending angle. The PVDF-based film demonstrated a responsive performance between these two extremes (Figure 14c,d).…”

Section: Diarylethene-based Metal−organic Complexes Diarylethene and ...mentioning

confidence: 93%

Section: Classification Of Photoresponsive Complexesmentioning

confidence: 99%

“…The photoinduced linkage isomerization in nitropentaamminecobalt(III) complex provides theoretical support for initiating photomechanical motion. Sahoo et al synthesized a Co(III) complex with potassium dinitrobenzoate as an external anion (Co-dnb), which was then mixed with PVA, PVDF, and agarose to fabricate three crystal–polymer films . The PVA-based film exhibited the least photomechanical bending angle, while the agarose-based film showed the highest bending angle.…”

Section: Classification Of Photoresponsive Complexesmentioning

confidence: 99%

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Recent Advances in Photomechanical Crystals Made from Metal–Organic and Organometallic Complexes

Chen

Wang

2023

Organometallics

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Photomechanical crystals that can directly convert light energy into mechanical work attracted increasing attention due to their dramatic behaviors and potential applications in photoactuators. However, a barrier in this field need to be overcome at present is how to endow the material with stable, continuous, and reversible response behavior. To date, numerous strategies have been explored to improve the mechanical properties for practical application in which coordination is an effective strategy to control the arrangement of photoresponsive group in crystals. Herein, we will summarize the progress recently made on photomechanical complexes. Then we briefly highlight possible applications of the photomechanical complex crystals and discuss the challenge and bottleneck that still need to be overcome for future practical applications.

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Section: Diarylethene-based Metal−organic Complexes Diarylethene and ...mentioning

confidence: 93%

Section: Classification Of Photoresponsive Complexesmentioning

confidence: 99%

Section: Classification Of Photoresponsive Complexesmentioning

confidence: 99%

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Recent Advances in Photomechanical Crystals Made from Metal–Organic and Organometallic Complexes

Chen

Wang

2023

Organometallics

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“…Currently, the light-powered polymeric actuators are entrenched in photoswitching functional groups that are either chemically integrated or cross-linked to the polymeric backbone as valuable adjuncts or dispersed throughout the polymeric array to give a composite/hybrid membrane. − While photoactuating molecular crystals are considerably appropriate mechanistic models that have greatly contributed to the comprehension of light-driven actuation, they offer insubstantial performance due to their rigidity and fragility. Thus, photoresponsive molecular crystals rule out the possibility of coupling in macroscale actuators.…”

Section: Introductionmentioning

confidence: 99%

Flexible Chlorinated Azine Molecular Crystals and Their Photothermally Driven Actuation

Hazarika,

Gupta,

Gunnam

et al. 2023

Crystal Growth & Design

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This study explores the photochemical actuation of three crystalline azine derivatives, a class of organic compounds distinguished by the presence of the −C�N− N�C− functional group. Acicular crystals of the three symmetrically substituted o-, m-, and p-chloro derivatives of azine displayed remarkable elastic deformation when subjected to stress. The presence of the photoswitchable functional group −N�C− in the azine derivatives prompted us to investigate the UV light-induced mechanical effects on the single crystals and composite polymer membranes of the compounds. It was observed that the fast and reversible motion displayed by the single crystals is due to the photothermal effect exhibited by the compounds, which was also reflected in the irreversible curling motion of the composite polymer films.

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“…photoisomerization [20][21][22][23][24][25][26] and photoreorientation [27][28][29][30] as well as macroscopic mechanisms such as electrostriction [31][32][33] and photothermal heating. [34][35][36][37][38][39] Many materials can have multiple photomechanical response mechanisms.…”

mentioning

confidence: 99%

Uniaxial photomechanical motion in large diameter polydimethylsiloxane optical fibers with fluoropolymer claddings

Knitter,

Ferreira,

Sheffield

et al. 2024

J. Optical Microsystems

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This study focuses on the photomechanical behavior of step-index optical fibers with a polydimethylsiloxane (PDMS) core and fluoropolymer claddings. The PDMS hosts dopant graphene nanoplatelets, which are heated when illuminated by visible light. Sample fibers were fabricated by drawing the doped resin into thin fluoropolymer tubing before the resin set. The individual motions of the core and cladding were observed to be coupled, which resulted in a relatively small photomechanical effect. Adding a castor oil lubricant between the core and cladding significantly increased the core's photomechanical strain. The large strain of the lubricated cores exhibited both irreversible and reversible photomechanical motion. Cycling the pump beam resulted in a fully reversible photomechanical piston that can be modeled by a linear response function to the incident pump beam.

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Excellent photo actuation in crystal-polymer composite by transfer of mechanical energy

Cited by 8 publications

References 62 publications

Recent Advances in Photomechanical Crystals Made from Metal–Organic and Organometallic Complexes

Recent Advances in Photomechanical Crystals Made from Metal–Organic and Organometallic Complexes

Flexible Chlorinated Azine Molecular Crystals and Their Photothermally Driven Actuation

Uniaxial photomechanical motion in large diameter polydimethylsiloxane optical fibers with fluoropolymer claddings

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