At present, more new aggregation-induced emission (AIE) materials of a clustering-triggered emission mechanism with excellent solubility, biocompatible, and biodegradability are urgently needed. Here, silk fibroin (SF), which actually can emit weak light but has high emission when formed into aggregates, was discovered. In addition, room temperature phosphorescence in SF solids was observed. Furthermore, SF can be used as a fluorescence tracker for three-color imaging and biosensors. The results demonstrate that SF is a novel AIE biomaterial with multiple applications.

中文翻译：

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基于聚集诱导发射的具有聚集触发机制的天然丝素蛋白及其多种应用

目前，迫切需要更多具有优异溶解性、生物相容性和生物降解性的聚集触发发射机制的新型聚集诱导发射（AIE）材料。在这里，发现了丝素蛋白（SF），它实际上可以发出微弱的光，但在形成聚集体时会发出高光。此外，观察到 SF 固体中的室温磷光。此外，SF 可用作三色成像和生物传感器的荧光跟踪器。结果表明，SF 是一种具有多种应用的新型 AIE 生物材料。