Wearable Eu@HOF luminescent fabric as a highly selective and sensitive optical synapse sensor for identification of six laboratory volatile compounds by neuromorphic computing

Abstract

As a product of the artificial intelligence (AI) age, the artificial optical synaptic sensor (AOSS) integrating an optical sensor and artificial synaptic system (ASS) shows a huge advantage for classification and quantitative detection of various harmful gases. Herein, a dual-emission Eu@IsoMe@Cu/Ni fabric (1) is fabricated for the first time by electrodeposition for harmful gas detection. 1 can emit a 1140.08 ms phosphorescence and a red emission of Eu³⁺ ions. By integrating an optical sensor and ASS, the 1-based AOSS is also created for the first time, which can classify and quantitatively detect six laboratory volatile compounds (LVCs), such as N-propylamine (Nme), ethylamine (Eme), methylamine (Mme), ethylenediamine (Ede), trifluoroacetic acid (TFc) and hydrochloric acid (HCl). For the sensing of these six LVCs, 1 shows high sensitivity, low detection limits and rapid response time. The sensing mechanisms of 1 toward these LVCs are clearly explored. The dual-emitting 1 can be fixed on a mask and lab coat to fabricate a 1-based wearable optical sensor, suggesting that 1 is expected to develop into the next generation of flexible wearable optical sensors. This work provides a facile method to fabricate wearable dual-emitting Eu@HOF fabric and opens the way to building an AOSS to simultaneously detect a variety of LVCs.