Hydrogen-bond acidic polymers for chemical vapor sensing

The introduction of silicon-containing polymers with hydrogen-bond acidic groups have paved the way for increased use of fluorinated hydrogen-bond acidic polymers for chemical sensing for the chemical sensing of organic polymers for acoustic wave sensors. different classes of hydrogen-bond acidic polymers and architectures have now been developed, from linear organic polymers containing fluoroalcohols to silicon-containing polymers with phenolic or fluoroalcohol functionalities in linear and branched architectures. There also exist hyperbranched and polyhedral architectures with the use of hyperbranched materials containing both siloxane and carbosilane linkages. Such classes are easier to make than early polymers and fluorinated reagents and monomers are now more readily available and some of the polymers can be obtained commercially. As such, these polymers have been applied to many other sensing approaches. Applications include sensors for explosives, chemical agents or simulants and volatile organic compounds on various acoustic wave devices, chemiresistors, chemicapacitors and microcantilevers and in fluorescence sensing methods.