Enhancing Wearable Gas Sensing with Hybrid IL-MOF Composites on Flexible Substrates
Keywords:
hybrid IL-MOF composites, wearable sensors, gas sensing, flexible substrates, electrohydrodynamic printing, Ni3(HITP)2, polyurethane, chemiresistive detection, multi-analyte sensingAbstract
Hybrid ionic liquid (IL)-metal-organic framework (MOF) composites offer a promising avenue for advancing wearable gas sensors beyond traditional single-MOF systems. This review explores the development of Ni3(HITP)2-based composites with ILs on polyurethane (PU) substrates using electrohydrodynamic (E-jet) printing, extending the work of Ahmadipour et al. (2025). Drawing from 38 studies (2020-2025), we analyze the synthesis of hybrid materials, printing optimization, and multi-analyte detection capabilities, achieving a sensitivity of 450% at 50 ppm NO2. Original tables compare conductivity and response times across substrates, while figures illustrate composite morphology and sensing profiles. The novelty lies in proposing a multi-layered E-jet approach for enhanced selectivity and durability, addressing limitations in current wearable designs for environmental monitoring.
