Phenazine fluorophore based imidazole derivatives (S1 and S2) were synthesized and sensor studies were carried out with various cations. Aggregation induced emission (AIE) was observed selectively for Al³⁺ among other cations under study in case of both sensors. ¹H NMR titration supported the aggregation induced emission of S2 with Al³⁺. ESI mass spectra successfully confirmed the aggregate formation. SEM images clearly showed the aggregation of receptor induced by Al³⁺ in a flower-like fashion. AIE probe was successfully applied for bio-imaging of RAW264.7 cells.

中文翻译：

---

基于吩嗪的新型AIE探针，用于在活细胞中存在其他三价金属离子的情况下选择性检测铝（III）离子

合成了基于吩嗪荧光团的咪唑衍生物（S1和S2），并对各种阳离子进行了传感器研究。对于两种传感器，在研究中的其他阳离子中选择性观察到了Al ^3+的聚集诱导发射（AIE）。¹ H NMR滴定支持Al ²⁺聚集引起S2的发射。ESI质谱成功地证实了聚集体的形成。SEM图像清楚地显示了Al ³⁺以花状方式诱导的受体的聚集。AIE探针已成功应用于RAW264.7细胞的生物成像。