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N,S-co-doped carbon dots (N,S-CDs) were synthesized via a single-step solvothermal process by using sodium lignosulfonate and p-phenylenediamine as carbon/nitrogen/sulfur sources. The N,S-CDs have an average diameter of 2.02 ± 1 nm and display green fluorescence, with excitation/emission peak wavelengths at 380/540 nm for optimal fluorescence. Fluorescence is excitation wavelength-dependent and stable...
A novel kind of p(HEMA-co-AA) fluorescent hydrogels with high strength are first generated through one-step photopolymerization of 2-hydroxyethyl methacrylate (HEMA), acrylic acid (AA), and HEMA-modified carbon dots (HMCDs). Herein, HMCDs are used as new nontoxic fluorescent crosslinking centers. The novel HMCDs-based fluorescent hydrogels not only display stable photoluminescence, but have high mechanical...
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