A Fluorescence Sensing Determination of 2, 4, 6-Trinitrophenol Based on Cationic Water-Soluble Pillar[6]arene Graphene Nanocomposite.
Xiaoping TanTingying ZhangWenjie ZengShuhua HeXi LiuHexiang TianJianwei ShiTuanwu CaoPublished in: Sensors (Basel, Switzerland) (2018)
We describe a selective and sensitive fluorescence platform for the detection of trinitrophenol (TNP) based on competitive host⁻guest recognition between pyridine-functionalized pillar[6]arene (PCP6) and a probe (acridine orange, AO) that used PCP6-functionalized reduced graphene (PCP6-rGO) as the receptor. TNP is an electron-deficient and negative molecule, which is captured by PCP6 via electrostatic interactions and π⁻π interactions. Therefore, a selective and sensitive fluorescence probe for TNP detection is developed. It has a low detection limit of 0.0035 μM (S/N = 3) and a wider linear response of 0.01⁻5.0 and 5.0⁻125.0 for TNP. The sensing platform is also used to test TNP in two water and soil samples with satisfying results. This suggests that this approach has potential applications for the determination of TNP.
Keyphrases
- water soluble
- quantum dots
- loop mediated isothermal amplification
- single molecule
- molecularly imprinted
- solid phase extraction
- energy transfer
- label free
- real time pcr
- high throughput
- reduced graphene oxide
- living cells
- carbon nanotubes
- sensitive detection
- room temperature
- molecular dynamics simulations
- walled carbon nanotubes
- climate change
- human health
- single cell
- tandem mass spectrometry
- aqueous solution
- visible light