Work

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

Year: 2025

Type: article

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.

Source: JACS Au

DOI: 10.1021/jacsau.4c01220

Authors: Xingzhong Chen, Fang Yan, Jiurong Li, Xiao Gong

Institutions: Wuhan University of Technology, State Key Laboratory of Silicate Materials for Architecture

Language: English

Topic: Carbon and Quantum Dots Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,500

Funders: National Natural Science Foundation of China, Higher Education Discipline Innovation Project