材料科学
荧光
水溶液
光致发光
一步到位
发光二极管
纳米技术
发光
量子点
离子
碳纤维
光电子学
化学工程
复合材料
有机化学
光学
化学
工程类
物理
复合数
作者
Jia An,Guoyi Liu,Meizhu Chen,Yuxiang Hu,Rubing Chen,Ying Lyu,Chao Zhang,Yuanyuan Liu
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2021-04-22
卷期号:32 (28): 285501-285501
被引量:6
标识
DOI:10.1088/1361-6528/abf59b
摘要
Abstract Carbon quantum dots (CDs), as one of the most potential fluorescent sensing materials, have attracted lots of attention in recent years. However, the low quantum yields, complicated separation and purification procedures have limited its application and large-scale production. In this paper, a facile and universal method was successfully developed to synthesize CDs-silica (SiO 2 ) spheres composites (CS composites), which not only demonstrates 10-fold fluorescence enhancement compared with single CDs but also enables the purification with a simple centrifugation step. Meanwhile, fabricated composites also presented superior photoluminescence (PL) stability and high PL intensity, even in some tough environments such as acid/alkali aqueous solution, high/low temperature, and high ion concentration aqueous solution. This simple, fast, low-cost, and efficient synthesis method would potentially expand the application of CDs for clinical analysis, optical sensing (ferric ion (Fe 3+ ) and pyrophosphate), bioimaging and light-emitting diodes (LEDs).
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