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Facile Preparation of Biocompatible and Transparent Silica Aerogels as Ionogels Using Choline Dihydrogen Phosphate Ionic Liquid

Kamal Mohamed, Seeni Meera and Rajavelu, Murali Sankar and Manikantan Syamala, Kiran and Sellamuthu N., Jaisankar and Milow, Barbara and Asit Baran, Mandal (2020) Facile Preparation of Biocompatible and Transparent Silica Aerogels as Ionogels Using Choline Dihydrogen Phosphate Ionic Liquid. Applied Sciences, 11 (1), pp. 1-16. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/app11010206. ISSN 2076-3417.

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Official URL: https://www.mdpi.com/2076-3417/11/1/206?type=check_update&version=2

Abstract

We developed a facile and greener approach for the preparation of silica-aerogel-based ionogels using choline dihydrogen phosphate ionic liquid by the sol–gel approach. A series of silica-based aerogels as ionogels were prepared by varying the ionic liquid concentrations: 0.1, 0.5, 1, 3, 5, and 10 wt %. The as-prepared ionogels were characterized using several analytical techniques, namely, attenuated total reflectance (ATR)/FT-IR, TGA, XRD, and particle size analyses. The role of ionic liquid in the viscoelastic properties of the sol–gel transition was monitored using time-dependent rheological measurements. The addition of ionic liquid to the sol–gel system favored the formation of a more interconnected silica network structure. The formation of a silica network structure during sol–gel hydrolysis and condensation was confirmed from 29Si solid-state CP/MAS NMR spectra. The effect of the ionic liquid on the morphological properties was investigated using SEM and TEM studies. The cell viabilities of the prepared gel samples were clearly evident from the cytotoxicity assay studies using Swiss and HaCaT cells. The main advantages of using biocompatible ionic liquids for the preparation of these aerogels as ionogels are that they may be used for encapsulating biological molecules and retain their conformational stability for a longer duration.

Item URL in elib:https://elib.dlr.de/140022/
Document Type:Article
Title:Facile Preparation of Biocompatible and Transparent Silica Aerogels as Ionogels Using Choline Dihydrogen Phosphate Ionic Liquid
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kamal Mohamed, Seeni Meeraseenimeera.kamalmohamed (at) dlr.dehttps://orcid.org/0000-0002-8812-1362
Rajavelu, Murali Sankarmuraliclri (at) gmail.comUNSPECIFIED
Manikantan Syamala, Kirankiran (at) clri.res.inUNSPECIFIED
Sellamuthu N., Jaisankarsnjai (at) hotmail.comUNSPECIFIED
Milow, BarbaraBarbara.Milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728
Asit Baran, Mandalabmandal (at) cgcri.res.inhttps://orcid.org/0000-0001-7953-941X
Date:28 December 2020
Journal or Publication Title:Applied Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:11
DOI :10.3390/app11010206
Page Range:pp. 1-16
Editors:
EditorsEmailEditor's ORCID iD
Maleki, Hajarh.maleki@uni-koeln.dehttps://orcid.org/0000-0002-2813-4700
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2076-3417
Status:Published
Keywords:aerogels; ionogels; silica; ionic liquid; choline dihydrogen phosphate
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignment
DLR - Research theme (Project):V - no assignment
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Kamal Mohamed, Seeni Meera
Deposited On:14 Jan 2021 07:51
Last Modified:14 Jan 2021 07:51

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