Integrating a Luminescent Porous Aromatic Framework into Indicator Papers for Facile, Rapid, and Selective Detection of Nitro Compounds.
Bo CuiChangyuan GaoJiating FanJinni LiuBin FengXianghui RuanYajie YangYe YuanKuo ChuZhuojun YanLixin XiaPublished in: Molecules (Basel, Switzerland) (2022)
Porous aromatic framework materials with high stability, sensitivity, and selectivity have great potential to provide new sensors for optoelectronic/fluorescent probe devices. In this work, a luminescent porous aromatic framework material (LNU-23) was synthesized via the palladium-catalyzed Suzuki cross-coupling reaction of tetrabromopyrene and 1,2-bisphenyldiborate pinacol ester. The resulting PAF solid exhibited strong fluorescence emission with a quantum yield of 18.31%, showing excellent light and heat stability. Because the lowest unoccupied molecular orbital (LUMO) of LNU-23 was higher than that of the nitro compounds, there was an energy transfer from the excited LNU-23 to the analyte, leading to the selective fluorescence quenching with a limit of detection (LOD) ≈ 1.47 × 10 -5 M. After integrating the luminescent PAF powder on the paper by a simple dipping method, the indicator papers revealed a fast fluorescence response to gaseous nitrobenzene within 10 s, which shows great potential in outdoor fluorescence detection of nitro compounds.
Keyphrases
- energy transfer
- quantum dots
- loop mediated isothermal amplification
- fluorescent probe
- metal organic framework
- sensitive detection
- real time pcr
- living cells
- amino acid
- highly efficient
- human health
- tissue engineering
- particulate matter
- single molecule
- single cell
- gold nanoparticles
- molecular dynamics
- reduced graphene oxide