A ternary luminescent cadmium-triazolate-carboxylate framework, [(CH₃)₂NH₂][Cd(1245-BTC)_0.5(3S-TRZ)] (SNNU-111, 1245-BTC = 1245-benzenetetra- carboxylic acid, 3S-TRZ = 3-mercaptotriazole) was successfully designed in this work. X-ray single crystal diffraction results show that Cd atoms are connected by 3S-TRZ ligands to form 2D wave-like layers, which are further extended by 1245-BTC linkers to generate the 3D pillar-layered architecture of SNNU-111. Solid-state and solution photoluminescence both showed that the emissions of SNNU-111 was ascribed to the intraligand charge transfer in 1245-BTC. Benefited from this process, SNNU-111 MOF can act as excellent fluorescence sensor to quantitatively detect involved nitroaromatics including nitrobenzene (NB), 1,2-dinitrobenzene (1,2-DNB), 1,3-dinitrobenzene (1,3-DNB), 2,4-dinitrotoluene (DNT), 2,4,6-trinitrotoluene (TNT), and 2,4,6-trinitrophenol (PA) through the fluorescence quenching. The corresponding quenching coefficient (K_sv) values are of 1.0 × 10⁴-1.7 × 10⁴ M⁻¹, which surpass the performance of many reported sensors. Specially, the K_sv value of 1.2 × 10⁴ M⁻¹ for NB is nearly the highest one among all MOF sensors up to now. On the other hand, SNNU-111 sensor also exhibits good sensitivity to nitroaromatics with the detection limits as low as 1.61–5.77 ppm. Overall, the definite pillar-layered structure, fast response and high sensitivity make SNNU-111 a promising fluorescent sensor to detect nitroaromatic compounds.

三元发光三唑镉羧酸盐骨架，[（CH ₃）₂ NH ₂ ] [Cd（1245-BTC）_0.5（3S-TRZ）]（SNNU-111，1245-BTC = 1245-苯四甲酸，3S-TRZ = 3-巯基三唑）已成功设计。X射线单晶衍射结果表明，Cd原子通过3S-TRZ配体连接形成2D波形层，并通过1245-BTC连接子进一步延伸以生成SNNU-111的3D柱层结构。固态和溶液光致发光均表明SNNU-111的发射归因于1245-BTC中的配体内电荷转移。得益于此过程，SNNU-111 MOF可以作为出色的荧光传感器，定量检测涉及的硝基芳烃，包括硝基苯（NB），1,2-二硝基苯（1,2-DNB），1,3-二硝基苯（1,3-DNB） ），2,4-二硝基甲苯（DNT），2,4,6-三硝基甲苯（TNT）和2,4,6-三硝基苯酚（PA）通过荧光猝灭。_sv）值为1.0×10 ⁴ -1.7×10 ⁴  M ^-1，超过了许多报告的传感器的性能。特别是，迄今为止，NB的K _sv值为1.2×10 ⁴  M ^-1几乎是所有MOF传感器中最高的。另一方面，SNNU-111传感器对硝基芳香族化合物也显示出良好的灵敏度，其检出限低至1.61-5.77 ppm。总体而言，SNNU-111明确的柱状分层结构，快速响应和高灵敏度使其成为检测硝基芳族化合物的有前途的荧光传感器。