First published online 25 Oct 2016 ; An AIE-active polytriazole coated fibre tip sensor was developed to detect picric acid with its detection limit down to 100 ppb. The fibre sensor requires an analysis time of only a few minutes and shows strong photostability and high reusability, and is promising for remote sensing of explosives in dangerous environments. ; Shuai Ruan, Yizhao Chen, Peng Zhang, Xuanzhao Pan, Cheng Fang, Anjun Qin, Heike Ebendorff-Heidepriem, Ben Zhong Tang, Youhong Tang and Yinlan Ruan