an0c00118_si_001.pdf (644.66 kB)
Synthesis of a Smart Hybrid MXene with Switchable Conductivity for Temperature Sensing
journal contribution
posted on 2020-03-31, 21:19 authored by Minh H. Tran, Robert Brilmayer, Lei Liu, Houlong Zhuang, Christian Hess, Annette Andrieu-Brunsen, Christina S. BirkelInorganic–organic
hybrid materials offer a wide variety
of intriguing properties by combining their different characteristics
and (chemical/physical) behavior, and the resulting smart materials
find potential applications in areas such as energy technologies and
drug delivery systems. Especially responsive two-dimensional carbides
that belong to the class of MXenes benefit from this additional functionality
in combination with their unique mechanical and electronic properties
and bare potential for use as catalysts and sensors. Here, we therefore
graft a stimuli-responsive polymer (poly(2-(dimethylamino)ethyl
methacrylate (PDMAEMA)) from the surface of a Ti-based two-dimensional
carbide (MXene) using the OH groups on the MXene surface as a linker
for the organic molecules. Successful fabrication of the hybrid material
as well as covalent bonding between the inorganic component and the
thermoresponsive polymer is shown by X-ray powder diffraction, IR
and X-ray photoelectron spectroscopy, thermal analysis, and electron
microscopy. We further demonstrate a reversible change of conductivity
of thin films of this smart hybrid material using temperature as an
external stimulus and enhance the mechanistic understanding by density
functional theory (DFT) calculations. Such systems could therefore
be used as temperature sensors in chemical reactions or microelectronics.
History
Usage metrics
Categories
Keywords
electron microscopySmart Hybrid MXenechemical reactionsstimuli-responsive polymerSwitchable ConductivityPDMAEMAcarbideMXenes benefitmaterials offerthermoresponsive polymerX-ray powder diffractionOH groupsMXene surfaceDFTSuch systemstemperature sensorsSuccessful fabricationIRX-ray photoelectron spectroscopydrug delivery systemsenergy technologies
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC