Three D-π-A barbituric acid derivatives were synthesized through the knoevenagel reaction between 1,3-dicyclohexylbarbituric acid and different aldehydes (N-Ethyl-3-carbazolecarboxaldehyde, 4-Dimethylaminobenzaldehyde and 4-(N,N-diphenylamino) benzaldehyde), which were named as CB, NB and TNB, respectively. The optical analyses showed the three compounds exhibited evident aggregation-induced emission (AIE) properties in THF/water. TNB emitted the strongest intensity in the aggregate state. The results of molecular dynamics simulation (MDS) showed that TNB has the highest binding energy in the solid state, which may rationalize the stronger emission intensity of TNB. NB exhibited noticeable mechanochromic fluorescence (MCF) performance, with the powder color changing for orange to yellow-brown after being ground. Both NB and TNB exhibited photostability under excitation within 1800 s. Additionally, TNB aggregates exhibited obvious fluorescence quenching to 2, 4-dinitro-toluen (DNT) and trinitrophenols (PA). The K_sv of TNB for DNT, PA were 2.8 × 10⁵ M⁻¹ and 3.4 × 10⁵ M⁻¹ respectively, and the corresponding limits of detection (LOD) were 0.367 μM and 0.296 μM, respectively.

通过1,3-二环己基巴比妥酸与不同醛（N-乙基-3-咔唑甲醛，4-二甲基氨基苯甲醛和4-（N，N-二苯基氨基）苯甲醛）之间的knoevenagel反应合成了三种D-π-A巴比妥酸衍生物，分别命名为CB，NB和TNB。光学分析表明，三种化合物在THF /水中均表现出明显的聚集诱导发射（AIE）特性。TNB在聚集状态下发射强度最高。分子动力学模拟（MDS）结果表明，TNB在固态中具有最高的结合能，这可能是合理的TNB较强的发射强度的原因。NB表现出明显的机械变色荧光（MCF）性能，研磨后粉末颜色从橙色变为黄棕色。NB和TNB均在1800 s内激发下表现出光稳定性。此外，TNB聚集体对2、4-二硝基甲苯（DNT）和三硝基苯酚（PA）表现出明显的荧光猝灭。的用于DNT，PA的TNB的K _sv分别为2.8×10 ⁵  M ^-1和3.4×10 ⁵  M ^-1，相应的检出限（LOD）分别为0.367μM和0.296μM。