NANOSCIENCE – THEORY TO APPLICATION

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1 article(s) from Nguyen, Tuyen Viet

Synthesis of carbon dot-mediated gold nanostructures: experimental and quantum chemical insights into turn-on fluorescence sensing of N-acetylcysteine

Thuy-Huong Nguyen,
Van-Nghia Nguyen,
Ha Thi Thu Nguyen,
Ha Ngoc Nguyen,
Anh Duc Nguyen,
Tuyen Viet Nguyen and
Truong Xuan Nguyen

Beilstein J. Nanotechnol. 2026, 17, 1103–1116, doi:10.3762/bjnano.17.75

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Figure 1: Optimized structures of (a) Au NPs, (b) NCD, (c) NAC. Color codes: light brown – Au, grey – C, blue...

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Figure 2: FTIR spectra of NCDs (black line) and Au@NCDs (red line).

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Figure 3: Raman spectra of NCDs and Au@NCDs.

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Figure 4: TEM images of (a) NCDs and (b) Au@NCDs and (c) DLS size distribution analysis of Au@NCDs.

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Figure 5: (a) EDX spectrum with elemental weight percentages, (b) SEM image, and elemental mapping of (c) Au ...

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Figure 6: (a) EDX spectrum with elemental weight percentages, (b) SEM image, and elemental mapping of (c) Au,...

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Figure 7: (a) Absorption and (b) photoluminescence spectra of NCDs and Au@NCDs (λ_ex = 355 nm).

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Figure 8: (a) Schematic illustration of the NAC detection mechanism of the Au@NCDs probe, (b, c) spatial dist...

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Figure 9: Optimized structures of the binding modes between Au NPs and NCD, along with the corresponding inte...

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Figure 10: Optimized structures of the binding modes between Au NPs and NAC, along with the corresponding inte...

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Figure 11: Photoluminescence spectra of NCDs, Au@NCDs, and Au@NCDs after adding NAC.

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Figure 12: (a) Effect of organic solvent and (b) amount of DMF solvent ratio.

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Figure 13: (a) The fluorescence spectra of Au@NCDs + NAC (0–80 mg/L); (b) calibration curve.

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Published 12 Aug 2026

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