Wettability Patternable Hybrid Polymer Films Based on TiO2 and Fluorinated Polymer for Bioelectronics Applications

Organic-inorganic hybrid films based on TiO2 and a fluorinated polymer are fabricated, and their properties are investigated for bioelectronic applications. The analysis revealed that the preparation process requires (1) aging the blend solution before spin coating and (2) spin coating under humid conditions to obtain hydrophobic honeycomb-like surfaces. Ultraviolet (UV) irradiation changed the surface wettability to hydrophilic, and patterned irradiation resulted in hydrophobic-hydrophilic surface patterns. Patterned hybrid films have been used as substrates in both open microfluidics and organic electrochemical transistor applications. This multimodal application will open up an integrated biosensing device that collects body fluids and analyzes them on a single platform.

Automated summary

Organic-inorganic hybrid films based on TiO2 and a fluorinated polymer were fabricated and their properties were investigated. The preparation process and UV irradiation were found to have significant effects on the surface properties. These hybrid films have been used as substrates in biosensing applications, allowing the collection and analysis of body fluids on a single platform.