Crystalline Acylhydrazone Photoswitches with Multiple Mechanical Responses

Poonam Gupta, Tamas Panda, Suryanarayana Allu, Silpisikha Borah, Anamika Baishya, Anilkumar Gunnam, Ashwini Nangia, Pance Naumov, Naba K. Nath

    Research output: Contribution to journalArticle

    Abstract

    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. ©

    Original languageEnglish (US)
    Pages (from-to)3039-3044
    Number of pages6
    JournalCrystal Growth and Design
    Volume19
    Issue number5
    DOIs
    StatePublished - May 1 2019

    Fingerprint

    Crystalline materials
    Crystals
    stimuli
    crystals
    Molecular crystals
    Ultraviolet radiation
    Elastic deformation
    Shearing
    elastic deformation
    Actuators
    shearing
    Single crystals
    Derivatives
    plastics
    actuators
    single crystals

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

    Gupta, P., Panda, T., Allu, S., Borah, S., Baishya, A., Gunnam, A., ... Nath, N. K. (2019). Crystalline Acylhydrazone Photoswitches with Multiple Mechanical Responses. Crystal Growth and Design, 19(5), 3039-3044. https://doi.org/10.1021/acs.cgd.8b01860

    Crystalline Acylhydrazone Photoswitches with Multiple Mechanical Responses. / Gupta, Poonam; Panda, Tamas; Allu, Suryanarayana; Borah, Silpisikha; Baishya, Anamika; Gunnam, Anilkumar; Nangia, Ashwini; Naumov, Pance; Nath, Naba K.

    In: Crystal Growth and Design, Vol. 19, No. 5, 01.05.2019, p. 3039-3044.

    Research output: Contribution to journalArticle

    Gupta, P, Panda, T, Allu, S, Borah, S, Baishya, A, Gunnam, A, Nangia, A, Naumov, P & Nath, NK 2019, 'Crystalline Acylhydrazone Photoswitches with Multiple Mechanical Responses', Crystal Growth and Design, vol. 19, no. 5, pp. 3039-3044. https://doi.org/10.1021/acs.cgd.8b01860
    Gupta P, Panda T, Allu S, Borah S, Baishya A, Gunnam A et al. Crystalline Acylhydrazone Photoswitches with Multiple Mechanical Responses. Crystal Growth and Design. 2019 May 1;19(5):3039-3044. https://doi.org/10.1021/acs.cgd.8b01860
    Gupta, Poonam ; Panda, Tamas ; Allu, Suryanarayana ; Borah, Silpisikha ; Baishya, Anamika ; Gunnam, Anilkumar ; Nangia, Ashwini ; Naumov, Pance ; Nath, Naba K. / Crystalline Acylhydrazone Photoswitches with Multiple Mechanical Responses. In: Crystal Growth and Design. 2019 ; Vol. 19, No. 5. pp. 3039-3044.
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