Fluorophores, (S)-5-(dimethylamino)-N-(1-phenylethyl)naphthalene-1-sulfonamide (DNS-S-PEA) and N-(2-(1H-indol-3-yl)ethyl)-5-(dimethylamino)naphthalene-1-sulfonamide (DNS-TRY), were synthesized by sulfonamide group formation applying dansyl and amine interaction in a single step in an aqueous medium, and their photophysical properties and interactions with various nitroaromatics were investigated. DNS-S-PEA and DNS-TRY showed emission at 522 nm and 520 nm, respectively, with excitation at 341 nm showing large stokes shifts. The fluorophores exhibited a linear fluorescence quenching response toward increasing concentrations of nitroaromatics. Surprisingly, the dynamic quenching constant (K_sv) was significantly higher for metronidazole compared with the other four quenchers. These fluorophores demonstrated high potential for the sensitive and selective detection of metronidazole in solutions and in real samples.

荧光团，(S)-5-(二甲基氨基)-N-(1-苯乙基)萘-1-磺酰胺 (DNS-S-PEA) 和 N-(2-(1H-indol-3-yl)ethyl)-5 -(二甲氨基)萘-1-磺酰胺 (DNS-TRY) 是通过在水性介质中应用丹磺酰和胺相互作用一步形成磺酰胺基团合成的，并研究了它们的光物理性质和与各种硝基芳烃的相互作用。DNS-S-PEA 和 DNS-TRY 分别显示 522 nm 和 520 nm 的发射，341 nm 的激发显示大的斯托克斯位移。荧光团对增加浓度的硝基芳烃表现出线性荧光猝灭响应。令人惊讶的是，动态淬火常数 (K _sv) 与其他四种猝灭剂相比，甲硝唑显着更高。这些荧光团展示了在溶液和实际样品中灵敏和选择性检测甲硝唑的高潜力。