Polyelectrolyte–Graphene Oxide Multilayer Composites for Array of Microchambers which are Mechanically Robust and Responsive to NIR Light

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Polyelectrolyte–Graphene Oxide Multilayer Composites for Array of Microchambers which are Mechanically Robust and Responsive to NIR Light
Title:
Polyelectrolyte–Graphene Oxide Multilayer Composites for Array of Microchambers which are Mechanically Robust and Responsive to NIR Light
Journal Title:
Macromolecular rapid communications
Publication Date:
25 March 2018
Citation:
Macromol. Rapid Commun. 2019, 40, 1700868
Abstract:
Development of composite polymer/graphene oxide (GO) materials attracts significant attention due to their unique properties. In this work, highly ordered arrays of hollow microchambers made of composite polyelectrolyte/GO multilayers (PEGOMs) are successfully fabricated via layer‐by‐layer assembly on sacrificial or sustainable templates having imprinted patterns of microwells on their surface. Mechanical and optical properties of PEGOMs are studied by nanoindentation and near‐infrared (NIR) absorption spectroscopy. Incorporation of three GO layers in between the polyelectrolyte multilayer stacks increases Young's modulus and critical stress of the microchambers by a factor of 5.6 and 2.6, respectively. Optical density of this PEGOM film is found to decrease gradually from 0.14 at λ = 800 nm to 0.06 at λ = 1500 nm. Remote opening of PEGOM microchambers with NIR laser beam is also demonstrated. One of the possible applications of the developed structures includes micropackaging and delivery systems in biological tissues with remote triggering.
License type:
PublisherCopyrights
Funding Info:
Agency for Science, Technology and Research (A*STAR), Singapore (Project 1619077004); Government of the Russian Federation (Grant 14.Z50.31.0004 to support scientific research projects implemented under the supervision of leading scientists at Russian institutions and Russian institutions of higher education); Saratov State University; A*STAR Graduate Academy, Singapore.
Description:
This is the peer reviewed version of the following article: Ermakov, A., Lim, S. H., Gorelik, S., Kauling, A. P., de Oliveira, R. V. B., Castro Neto, A. H., Glukhovskoy, E., Gorin, D. A., Sukhorukov, G. B., Kiryukhin, M. V., Macromol. Rapid Commun. 2019, 1700868. https://doi.org/10.1002/marc.201700868, which has been published in final form at https://doi.org/10.1002/marc.201700868. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
ISSN:
1521-3927
1022-1336
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