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Microwave-assisted one-step synthesis of water-soluble manganese-carbon nanodot clusters.

ABSTRACT: Using metal coordination to assemble carbon nanodots (CND) into clusters can enhance their photophysical properties for applications in sensing and biomedicine. Water-soluble clusters of CNDs are prepared by one-step microwave synthesis starting from ethylenediaminetetraacetic acid, ethylenediamine and MnCl₂·4H₂O as precursors. Transmission electron microscopy and powder X-Ray diffraction techniques indicate that the resulting clusters form spherical particles of 150 nm constituted by amorphous CNDs joined together with Mn ions in a laminar crystalline structure. The nanomaterial assemblies show remarkable fluorescence quantum yields (0.17-0.20) and magnetic resonance imaging capability (r₁ = 2.3-3.8 mM^-1.s^-1). In addition, they can be stabilized in aqueous solutions by phosphate ligands, providing a promising dual imaging platform for use in biological systems.

SUBMITTER: Gomez-Blanco N

PROVIDER: S-EPMC10447561 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature

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Microwave-assisted one-step synthesis of water-soluble manganese-carbon nanodot clusters.

Gomez-Blanco Nina N Prato Maurizio M

Communications chemistry 20230823 1

Using metal coordination to assemble carbon nanodots (CND) into clusters can enhance their photophysical properties for applications in sensing and biomedicine. Water-soluble clusters of CNDs are prepared by one-step microwave synthesis starting from ethylenediaminetetraacetic acid, ethylenediamine and MnCl<sub>2</sub>·4H<sub>2</sub>O as precursors. Transmission electron microscopy and powder X-Ray diffraction techniques indicate that the resulting clusters form spherical particles of 150 nm con ...[more]

PMID: 37612431

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