Conductive, Acid-Doped Polyaniline Electrospun Nanofiber Gas Sensing Substrates Made Using a Facile Dissolution Method.
Maryanne E SpiersDavid J NielsenKarl D PaveyYen Bach TruongGregory C RutledgePeter KingshottDaniel S EldridgePublished in: ACS applied materials & interfaces (2021)
A novel dissolution method that allows for the total solvation of high-concentration, high-molecular-weight polyaniline (PANi) doped with (+)-camphor-10-sulfonic acid (CSA) is reported. Preparation of 12-16 wt % 65,000 Da PANi solutions in N,N-dimethylformamide is achievable using a simple one-pot method. Doped polyaniline solutions in common organic solvents were processed into nanofibers using a convenient single-nozzle electrospinning technique. The electrospinning of PANi-CSA into nanofibrous membranes generated substrates that were subsequently employed in colorimetric gas sensing. These substrates demonstrated linearity of resistivity upon exposure to 50-5500 ppm ammonia at ambient (50 ± 10% RH) and high (80% RH) humidity.
Keyphrases
- quantum dots
- reduced graphene oxide
- tissue engineering
- highly efficient
- gold nanoparticles
- metal organic framework
- room temperature
- visible light
- ionic liquid
- sensitive detection
- air pollution
- solid phase extraction
- hydrogen peroxide
- molecular dynamics
- carbon dioxide
- mass spectrometry
- nitric oxide
- molecularly imprinted