Integrating L-Cys-AuNCs in ZIF-8 with Enhanced Fluorescence and Strengthened Stability for Sensitive Detection of Copper Ions DOI Creative Commons
Ting Zhou,

Luyao Zang,

Xia Zhang

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(24), P. 6011 - 6011

Published: Dec. 20, 2024

Gold nanoclusters (AuNCs) have been widely investigated because of their unique photoluminescence properties. However, the applications AuNCs are limited by poor stability and relatively low fluorescence. In present work, we developed nanocomposites (L-Cys-AuNCs@ZIF-8) with high fluorescence stability, which were constructed encapsulating water-dispersible L-Cys-AuNCs into a ZIF-8 via Zn2+-triggered growth strategy without temperature pressure. The maximum emission wavelength L-Cys-AuNCs@ZIF-8 composite was at 868 nm, intensity nearly nine-fold compared package. mechanism investigation spectroscopy X-ray photoelectron showed that impeded ligand rotation, induced energy dissipation, diminished self-quenching effect, attributing to spatial distribution L-Cys-AuNCs. Based on efficiency L-Cys-AuNCs@ZIF-8, “signal off” detective platform proposed copper ions as model analyte, achieving sensitive detection limit Cu2+ 16.7 nM. quenching confirmed, showing structure collapsed addition Cu2+. Attributing strong adsorption ability between pyridyl nitrogen, as-prepared shown accumulate Cu2+, Zn2+ in replaced

Language: Английский

Integrating L-Cys-AuNCs in ZIF-8 with Enhanced Fluorescence and Strengthened Stability for Sensitive Detection of Copper Ions DOI Creative Commons
Ting Zhou,

Luyao Zang,

Xia Zhang

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(24), P. 6011 - 6011

Published: Dec. 20, 2024

Gold nanoclusters (AuNCs) have been widely investigated because of their unique photoluminescence properties. However, the applications AuNCs are limited by poor stability and relatively low fluorescence. In present work, we developed nanocomposites (L-Cys-AuNCs@ZIF-8) with high fluorescence stability, which were constructed encapsulating water-dispersible L-Cys-AuNCs into a ZIF-8 via Zn2+-triggered growth strategy without temperature pressure. The maximum emission wavelength L-Cys-AuNCs@ZIF-8 composite was at 868 nm, intensity nearly nine-fold compared package. mechanism investigation spectroscopy X-ray photoelectron showed that impeded ligand rotation, induced energy dissipation, diminished self-quenching effect, attributing to spatial distribution L-Cys-AuNCs. Based on efficiency L-Cys-AuNCs@ZIF-8, “signal off” detective platform proposed copper ions as model analyte, achieving sensitive detection limit Cu2+ 16.7 nM. quenching confirmed, showing structure collapsed addition Cu2+. Attributing strong adsorption ability between pyridyl nitrogen, as-prepared shown accumulate Cu2+, Zn2+ in replaced

Language: Английский

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