Integrating a Luminescent Porous Aromatic Framework into Indicator Papers for Facile, Rapid, and Selective Detection of Nitro Compounds
Bo Cui,
Changyuan Gao,
Jiating Fan,
Jinni Liu,
Bin Feng,
Xianghui Ruan,
Yajie Yang,
Ye Yuan,
Kuo Chu,
Zhuojun Yan,
Lixin Xia
Affiliations
Bo Cui
College of Chemistry, Liaoning University, Shenyang 110036, China
Changyuan Gao
School of Environmental Science, Liaoning University, Shenyang 110036, China
Jiating Fan
College of Chemistry, Liaoning University, Shenyang 110036, China
Jinni Liu
College of Chemistry, Liaoning University, Shenyang 110036, China
Bin Feng
College of Chemistry, Liaoning University, Shenyang 110036, China
Xianghui Ruan
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
Yajie Yang
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
Ye Yuan
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
Kuo Chu
School of Environmental Science, Liaoning University, Shenyang 110036, China
Zhuojun Yan
College of Chemistry, Liaoning University, Shenyang 110036, China
Lixin Xia
College of Chemistry, Liaoning University, Shenyang 110036, China
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.
