Key Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, Jiangxi 343009, China.
State Key Laboratory of Luminescent Materials & Devices, College of Materials Science & Engineering, South China University of Technology, Guangzhou 510640, China.
Anal Methods. 2023 Apr 13;15(15):1881-1887. doi: 10.1039/d3ay00112a.
The liquid micro-environment plays a momentous role in the regulation of various activities, and the abnormal changes are often closely related to the deterioration phenomena in multiple beverages. The local viscosity fluctuation has long been regarded as a key indicator to reflect the micro-environmental status changes. Herein, we proposed a versatile optical sensor, rosmarinic acid (RA), one kind of green natural product extracted from rosemary, for monitoring liquid micro-environmental viscosity alterations. RA displays a larger Stokes shift (123.8 nm) with narrow-band energy and exhibits wide adaptability, high selectivity, good sensitivity, and excellent photostability in various commercial liquids. When in high viscous media, a bright fluorescent signal of RA is specifically activated, and a high signal-to-noise ratio signal was released (58-fold). With the assistance of the fluorescence analytical technique, we have successfully achieved tracking the viscosity fluctuations during the deterioration stage of liquids an and visualization method. Our study will spur additional research on the molecular tools extracted from natural products for liquid safety inspection, and a convenient and sustainable application pathway has been established.
液体微环境在调节各种活动中起着重要作用，其异常变化通常与多种饮料的恶化现象密切相关。局部粘度波动一直被认为是反映微环境状态变化的关键指标。在这里，我们提出了一种通用的光学传感器，迷迭香酸（RA），一种从迷迭香中提取的绿色天然产物，用于监测液体微环境粘度变化。RA 具有较大的斯托克斯位移（123.8nm）和窄带能量，在各种商业液体中表现出广泛的适应性、高选择性、良好的灵敏度和优异的光稳定性。当处于高粘性介质中时，RA 会特异性地激活明亮的荧光信号，并释放出高信噪比信号（58 倍）。借助荧光分析技术，我们成功地实现了对液体变质阶段粘度波动的跟踪和可视化方法。我们的研究将激发对天然产物提取的分子工具在液体安全检测方面的进一步研究，并建立了一种方便且可持续的应用途径。
