Control Synthesis of Multicolor Emitting Carbonized Polymer Dots Using Different Dihydroxynaphthalene Isomers.

IF 8.5 Q1 CHEMISTRY, MULTIDISCIPLINARY
JACS Au Pub Date : 2025-02-28 eCollection Date: 2025-03-24 DOI:10.1021/jacsau.4c01220
Xingzhong Chen, Fang Yan, Jiurong Li, Xiao Gong
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引用次数: 0

Abstract

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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