Hydrogen Bond Acidic Polymers for Surface Acoustic Wave Vapor Sensors and Arrays

摘要: Four hydrogen bond acidic polymers are examined as sorbent layers on acoustic wave devices for the detection of basic vapors. A polysiloxane polymer with pendant hexafluoro-2-propanol groups and hexafluorobisphenol linked by oligosiloxane spacers yield sensors that respond more rapidly greater sensitivity than fluoropolyol, a material used in previous SAW sensor studies. Sensors coated new materials all reach 90% full response within 6 s first indication response. Unsupervised learning techniques applied to pattern-normalized array data were examine spread vapor feature space when does or not contain polymers. The radial distance degrees between points was utilized obtain quantifiable distances could be compared number chemical diversity varied. significantly increase dis...