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Abstract Yury GOGOTSI
More than 40 stoichiometric MXene compositions and dozens of solid solutions and structures with various terminations have been reported since the first report on Ti3C2Tx in 2011 [1]. The number of possible MXene compositions is infinite if one considers solid solutions (more than 50 have been made in our lab) and combinations of surface terminations. New subfamilies of in- and out-of-plane ordered MXenes, oxycarbides, 2D borides, and silicides further expand the family of non-oxide 2D materials based on transition metals. MXenes have also opened an era of computationally driven atomistic design of 2D materials. Many MXenes studied to date are biocompatible, particularly Ti, Nb, Ta carbides, etc. They possess electronic, optical, mechanical, and electrochemical properties that differentiate them from other materials. In particular, Ti3C2 has high metallic and ionic conductivity, and its conductivity greatly exceeds that of carbon nanomaterials. Moreover, MXene properties are tunable by design and can be modulated using light or applied potential.
This presentation will discuss the structure, synthesis methods, biocompatibility, and biomedical application of several MXene variants. I’ll explain the synthesis effect on composition and properties and outline prospects for biomedical applications of MXenes ranging from photothermal therapy to tissue engineering, biosensing, and implantable and epidermal electrodes [2-4]. This analysis is expected to pave the way for more MXene compositions to be explored in the biomedical and healthcare fields.
References
- VahidMohammadi, J. Rosen, Y. Gogotsi, The World of Two-Dimensional Carbides and Nitrides (MXenes), Science, 372, eabf1581 (2021)
- Kyrylenko, et al., MXene assisted ablation of cells with a pulsed near-infrared laser, ACS Applied Materials & Interfaces, 14 (25), 28683-28696 (2022)
- Diedkova, et al., Polycaprolactone-MXene Nanofibrous Scaffolds for Tissue Engineering, ACS Applied Materials and Interfaces, 15 (11), 14033–14047 (2023)
- Bi, R. Garg, N. Noriega, R. (John) Wang, H. Kim, K. Vorotilo, J. C. Burrell, C. E. Shuck, F. Vitale, B. A. Patel, Y. Gogotsi, Soft, Multifunctional MXene-Coated Fiber Microelectrodes for Biointerfacing, ACS Nano, (2024)