The development of new luminescent materials has allowed us to gain new knowledge and opened a new opportunity for scientific achievement and social development. In this work, luminogens, namely, (4-pyridinyl)-phenyldiphenylamine (TPAP) and 3-diphenylamino-6-(2-pyridinyl)phenyldiphenylboron (TPAP-BB), were synthesized in satisfactory yields through convenient synthetic routes and their properties were systematically investigated. These luminogens exhibited a moderate fluorescence quantum yield in tetrahydrofuran (14.6% for TPAP and 49.0% for TPAP-BB), whereas their values in thin films were much higher (69.4% and 88.4%), demonstrating a phenomenon of aggregation-induced emission (AIE). Moreover, TPAP-BB not only exhibited piezo-chromism (its emission color could be tuned repeatedly by grinding–heating cycle because of the transformation between crystalline and amorphous phases) but also showed on–off light emission process by repeatedly fuming with acid and ammonia vapor. Furthermore, TPAP-BB exhibited impressive high photostability and low toxicity to living cells. It could specifically stain lipid droplets (LDs) in live HeLa cells with higher signal-to-noise ratio than Nile Red, a commercial LDs agent. This dye could also be applied for real-time monitoring of cell apoptosis and in vivo imaging in Medaka fish. Such results were expected to create enthusiasm to generate new AIE luminogens for further technological applications.

中文翻译：

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具有多种功能的高发射AIEgens：简便的合成，色度学，特定脂质液滴成像，细胞凋亡监测和体内成像

新的发光材料的发展使我们获得了新的知识，并为科学成就和社会发展打开了新的机遇。在这项工作中，通过方便的合成途径以令人满意的收率合成了发光剂，即（4-吡啶基）-苯基二苯胺（TPAP）和3-二苯基氨基-6-（2-吡啶基）苯基二苯硼（TPAP-BB）。系统地调查。这些发光剂在四氢呋喃中显示出中等的荧光量子产率（TPAP为14.6％，TPAP-BB为49.0％），而它们在薄膜中的值则更高（分别为69.4％和88.4％），表明存在聚集诱导的发射现象（ AIE）。而且，TPAP-BB不仅表现出压电致变色（由于晶相和非晶相之间的转变，其发射颜色可通过研磨-加热循环反复进行调节），而且还通过反复用酸和氨蒸气发烟显示出开-关发光过程。此外，TPAP-BB表现出令人印象深刻的高光稳定性和对活细胞的低毒性。它可以特异性染色活HeLa细胞中的脂滴（LDs），其信噪比比市售LDs试剂Nile Red高。这种染料还可以用于实时监测Medaka鱼中的细胞凋亡和体内成像。预期这样的结果会激发产生产生新的AIE发光剂用于进一步技术应用的热情。