黄色荧光碳点的合成及其双模式检测有机溶剂中水含量Yellow-emitting carbon dots for colorimetric and fluorometric detection of water content in organic solvents
魏来,肖雯馨,王珺,王建颖
摘要(Abstract):
为了拓展荧光碳点在溶剂传感器领域的应用,我们采用以天然木质素为碳源,邻苯二胺为氮源,通过一步溶剂热法合成了黄色荧光碳点.获得的碳点尺寸在10 nm左右,形貌为圆盘状,并具有高的结晶性和石墨化程度.该碳点具有独特的发光特性:以水为溶剂,在紫外光激发下发出黄光,且具有激发独立性,此外,在不同溶剂中发出不同颜色的光.基于此,进一步将该碳点应用于溶剂传感器,特别是有机溶剂中水含量的检测.结果表明:该碳点不仅表现出基于发射波长变化的比色传感特性,而且还具有基于荧光强度变化的定量检测能力,可望实现有机溶剂中水含量的双模式传感,为高性能光学传感器的开发提供一种新思路.
关键词(KeyWords): 碳点;黄色荧光;传感器;水含量;双模式检测
基金项目(Foundation): 国家自然科学基金(51673060);; 湖北省自然科学基金(2019CFB825);; 武汉市教育局产学研项目(CXY202018)资助
作者(Author): 魏来,肖雯馨,王珺,王建颖
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