CC BY
4*
ALT'23
The 30th International Conference on Advanced Laser Technologies
LM-O-10
Laser-integration of metal-organic framework on thermoplastic polyurethane for robust flexible electronics
Tuan-Hoang Tran1, R. Gulyaev1, A.S. Garcia Balza1, R.D. Rodriguez1, E.S. Sheremet 1
1- Tomsk polytechnic university, Lenina avenue, 30, 634050, Tomsk, Russia.
Metal-organic framework (MOF) has gained tremendous interest in scientific and industrial communities thanks to its porous and uniform structure, tunable pore sizes and well-defined molecular adsorption site properties. MOF has been used in catalysis, gas storage, chemical sensors, biomedicine[1]. Flexible electronics allows to continuously monitor different parameters of human body. The intrinsically brittle and rigid attribute of MOFs is mechanically incompatible with flexible electronics, leading to potential challenges in constructing MOF-based flexible devices[2]. Laser technologies are one of the promising ways to create robust integration of MOFs into flexible polymer in designated patterns, which is critical for flexible electronics. Herein, we report the integration of zeolitic imidazolate framework (ZIF-8) into thermoplastic polyurethane (TPU) by laser irradiation. It has been found that after laser irradiation the sample color changed from white to black (see Fig. 1a) and sample became conductive with the resistance of about 300 Ù.
Fig. 1 a) The laser irradiation of ZIF-8 on TPU and sonication process, b) Optical image of ZIF-8 after laser irradiation, c) photoluminescence (PL)
spectra of TPU substrate, ZIF-8 before and after laser irradiation.
ZIF-8 is well integrated into TPU after laser irradiation because even after 10 mins of sonication, the unirradiated ZIF-8 was almost removed from the TPU surface, nevertheless the laser-irradiated ZIF-8 is still on the surface (see Fig. 1c). Interestingly, we found that ZIF-8 survived after laser ablation due to the presence of almost the same PL peak. Overall, we demonstrated that laser-irradiated ZIF-8 on TPU is promising material for robust flexible electronics.
The work was supported by Russian Science Foundation grant № 23-42-00081.
1. Ding M, Cai X, Jiang H-L. Improving MOF stability: approaches and applications. Chem Sci. 2019;10: 10209-10230.
2. Ling W, Liew G, Li Y, Hao Y, Pan H, Wang H, et al. Materials and techniques for implantable nutrient sensing using flexible sensors integrated with metal-organic frameworks. Adv Mater. 2018;30: 1800917.
