| 초록 |
We synthesized various conjugated microporous polymers (CMPs) using benzene and tetraphenylethylene (TPE) derivatives via Suzuki polymerization. The various CMPs synthesized had different optical properties than monomers and had high Brunauer-Emmett-Teller (BET) specific surface area of 672.95, 685.05, and 825.99 m2g-1 respectively. Fluorescence quenching was observed when each CMP was exposed to various nitrobenzene derivatives. Among them, the largest fluorescence quenching was observed in the explosive compound picric acid, and when applied to the Stern Volmer equation, the Ksv values were 8026, 3879 and 14890 M-1, respectively. Also, when 2.5 mM of picric acid solution was added, the fluorescence intensity of each CMP was decreased by 26.76, 42.31 and 190.10 times. We confirmed that the fluorescence quenching of CMP increases with the increase of TPE monomer ratio. CMPs with these phenomena we synthesized can be used as sensors to selectively detect picric Acid. |
