利用不同的二羟基萘异构体控制多色发光碳化聚合物点的合成

IF 8.5 Q1 CHEMISTRY, MULTIDISCIPLINARY
Xingzhong Chen, Fang Yan, Jiurong Li and Xiao Gong*, 
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引用次数: 0

摘要

尺寸小于10nm的碳化聚合物点(cd)已经引起了人们的极大兴趣,特别是在追求多色荧光方面,这是一个令人着迷的研究领域。在这里,我们报告了通过合理选择基于异构体的反应前体来控制合成具有可调谐发射的多色CDs。以成本低廉的二羟基萘(DHN)异构体(1,7-DHN、1,6-DHN或2,7-DHN)和l-蛋氨酸为前体,在乙醇-热条件下获得了具有蓝、绿、红荧光的多色CDs。可以观察到,芳香族化合物DHN中羟基配位的结构变化导致合成CDs的发射发生了明显的红移。值得注意的是,在极低浓度下,红色发光CDs (r-CDs, 10 μM)对四环素(TC)具有很高的灵敏度,基于r-CDs的比例荧光探针可以定量和直观地检测TC。与含金属和稀土元素的比例荧光探针相比,基于cd的比例荧光探针更具成本效益和环境友好性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Control Synthesis of Multicolor Emitting Carbonized Polymer Dots Using Different Dihydroxynaphthalene Isomers

Carbonized polymer dots (CDs) with sizes smaller than 10 nm have gained significant interest, particularly in the pursuit of multicolor fluorescence, which is a fascinating field of research. Here, we report the control synthesis of multicolor CDs with tunable emissions via the rational selection of isomer-based reaction precursors. Using cost-friendly dihydroxynaphthalene (DHN) isomers (1,7-DHN, 1,6-DHN, or 2,7-DHN) and l-methionine as the precursors, multicolor CDs with blue, green, and red fluorescence were obtained under ethanol-thermal conditions. It can be observed that structural changes in the coordination of the hydroxyl group within the aromatic compound DHN lead to a significant redshift in the emission of the synthesized CDs. Notably, the red-emitting CDs (r-CDs, 10 μM) at very low concentrations exhibit high sensitivity to tetracycline (TC), and the ratiometric fluorescent probe based on r-CDs enables quantitative and visual detection of TC. Compared with ratiometric fluorescent probes containing metal and rare earth elements, CDs-based ratiometric fluorescent probes are more cost-effective and environmentally friendly.

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来源期刊
CiteScore
9.10
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