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Photo-Switchable Nanomechanical Systems Comprising a Nanocontainer (Montmorillonite) and Light-Driven Molecular Jack (Azobenzene-Imidazolium Ionic Liquids) as Drug Delivery Systems; Synthesis, Characterization, and in Vitro Release Studies
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. Azarbaijan Shahid Madani University, Tabriz, Iran.
Azarbaijan Shahid Madani University, Tabriz, Iran.
University of Alabama, Tuscaloosa, AL, United States.
Azarbaijan Shahid Madani University, Tabriz, Iran.
2018 (English)In: ACS Biomaterials Science and Engineering, ISSN 2373-9878, Vol. 4, no 1, p. 184-192Article in journal (Refereed) Published
Abstract [en]

In this work, photoresponsive nanomechanical systems were prepared through the intercalation of positively charged photoswitching molecular jacks (azobenzene ionic liquids, Azo-ILs) within montmorillonite (MMT) layers (MMT@Azo-ILs). The study shows that MMT@Azo-ILs are photosensitive and the synthesized molecular jacks could change the basal distances of MMT layers upon UV irradiation. These changes come from changes in the structure and geometry of Azo molecules (i.e., cis-trans isomerization) between clay layers upon UV irradiation. The prepared photoresponsive nanomechanical systems were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM). Moreover, the in vitro release studies were performed in different conditions (upon UV irradiation and darkness) in pH 5.8 at 34 ± 1 °C, and it was found that the release rates from drug loaded MMT@Azo-ILs were higher upon UV irradiation in comparison with the release rates in darkness. According to the release studies, the prepared photoresponsive carriers might be considered as an excellent potential candidate in order to formulate smart sunscreens. © 2017 American Chemical Society.

Place, publisher, year, edition, pages
American Chemical Society , 2018. Vol. 4, no 1, p. 184-192
Keyword [en]
azobenzene ionic liquid, drug delivery system, molecular jack, photoresponsive nanomechaical system, smart sunscreen
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-32717DOI: 10.1021/acsbiomaterials.7b00621ISI: 000422613800016Scopus ID: 2-s2.0-85037828042OAI: oai:DiVA.org:miun-32717DiVA, id: diva2:1184889
Note

Export Date: 19 January 2018; Article; Correspondence Address: Mahkam, M.; Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani UniversityIran; email: mmahkam@yahoo.com

Available from: 2018-02-22 Created: 2018-02-22 Last updated: 2018-02-22Bibliographically approved

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