TY - JOUR
T1 - Synthesis of a Smart Hybrid MXene with Switchable Conductivity for Temperature Sensing
AU - Tran, Minh H.
AU - Brilmayer, Robert
AU - Liu, Lei
AU - Zhuang, Houlong
AU - Hess, Christian
AU - Andrieu-Brunsen, Annette
AU - Birkel, Christina S.
N1 - Funding Information:
The authors acknowledge funding from the Hessen State Ministry of Higher Education, Research and the Arts, Germany, in the frame of the LOEWE project iNAPO. This research also used computational resources of the Texas Advanced Computing Center under Contract TG-DMR170070. The authors thank Karl Kopp for performing XPS measurements. We acknowledge Nicole Herzog for sample preparation and IR measurements of Figure S4 .
Publisher Copyright:
© 2020 American Chemical Society.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/5/22
Y1 - 2020/5/22
N2 - Inorganic-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.
AB - Inorganic-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.
KW - MXene
KW - PDMAEMA
KW - inorganic-organic hybrid
KW - stimuli-responsive material
KW - switchable material
KW - thermoresponsive
KW - two-dimensional carbide
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U2 - 10.1021/acsanm.0c00118
DO - 10.1021/acsanm.0c00118
M3 - Article
AN - SCOPUS:85087590148
SN - 2574-0970
VL - 3
SP - 4069
EP - 4076
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 5
ER -