高等学校化学学报2024，Vol.45Issue(6)：39-50,12.DOI:10.7503/cjcu20230510
室温驱动腐植酸钠基碳纳米簇用于荧光比色检测银离子和温度传感
Room Temperature Driven Sodium Humate-protected Carbon Nanoclusters for Fluorescent and Colorimetric Sensing of Ag+and Temperature
摘要
Abstract
Based on hydrogen bonding self-assembly strategy,hypotoxicity and water-soluble cyan fluorescent carbon nanoclusters(HAN-CNCs)were constructed to employ a highly-efficient green economy and room temperature synthesis method,which used ascorbic acid and high biocompatibility coal-based sodium humate with abundant hydroxy as raw materials.The as-prepared HAN-CNCs can be specifically quenched by Ag+at pH of 5.0,with a wide detection range(5.0-300 μmol/L)and a low detection limit of 27.5 nmol/L.It was found that Ag+can induce fluorescence static quenching of the HAN-CNCs,owing to the coordination interaction between Ag+and amine groups or carbonyl groups on the surface of HAN-CNCs.More interestingly,the colorimetric detection of Ag+could be additionally realized by visible color conversion(yellowish-rubricans)under the daylight lamp and the cyan fluorescence gradually changed to blue purple under the irradiation of an ultraviolet lamp.From this,the HAN-CNCs were employed in the fabrication portable test strip for colorimetry monitoring of Ag+via the green-blue(G/B)analysis.In addition,HAN-CNCs exhibit an excellent reversible thermal response in the range of 20-85℃and have potential as a temperature sensor.Furthermore,the HAN-CNCs exhibited a low biotoxicity and an excellent cell permeability when selectively detecting Ag+in living cells by fluorescence microscopy imaging,indicating that the sensing system can be effectively applied to assessing potential risks and health security.关键词
煤基腐植酸钠/碳纳米簇/室温驱动/银离子比色荧光检测/温度传感Key words
Coal-based sodium humate/Carbon nanocluster/Room temperature driven/Colorimetric fluorescence detection of Ag+/Temperature sensing分类
化学化工引用本文复制引用
李林,马静,许畅琳,陈彤瑶,郭衡瑶,李紫悠,武文鑫..室温驱动腐植酸钠基碳纳米簇用于荧光比色检测银离子和温度传感[J].高等学校化学学报,2024,45(6):39-50,12.基金项目
山西省基础研究计划项目(批准号:202203021221216)、山西省科技创新平台研究基金(批准号:410220367)和山西省高等学校教学改革项目(批准号:J20220930)资助. Supported by the Fundamental Research Program of Shanxi Province,China(No.202203021221216),the Research Fund of Science and Technology Innovation Platform of Shanxi Province,China(No.410220367)and the Teaching Reform Innovation Programs of Higher Education Institutions of Shanxi Province,China(No.J20220930). （批准号:202203021221216）
