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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
20/07/2026 |
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Data da última atualização: |
20/07/2026 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MÜLLER, D.; DIAS, G. M. V.; GUIOTOKU, M.; BENDO, T.; HOTZA, D.; RAMBO, C. R. |
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Afiliação: |
DALIANA MÜLLER, UNIVERSIDADE FEDERAL DE SANTA CATARINA; GABRIELLA M. V. DIAS, UNIVERSIDADE FEDERAL DE SANTA CATARINA; MARCELA GUIOTOKU, CNPF; TATIANA BENDO, UNIVERSIDADE FEDERAL DE SANTA CATARINA; DACHAMIR HOTZA, UNIVERSIDADE FEDERAL DE SANTA CATARINA; CARLOS R. RAMBO, UNIVERSIDADE FEDERAL DE SANTA CATARINA. |
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Título: |
Precursor‐driven photoluminescence modulation in microwave‐synthesized fruit‐derived carbon dots. |
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Ano de publicação: |
2026 |
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Fonte/Imprenta: |
Particle & Particle Systems Characterization, v. 43, n. 7, e70112,2026. |
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ISSN: |
0934-0866 |
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DOI: |
https://doi.org/10.1002/ppsc.70112 |
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Idioma: |
Português |
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Conteúdo: |
Carbon dots synthesized from natural biomass precursors have attracted increasing attention due to their low cost, sustainability, and tunable optical properties. However, establishing robust descriptors linking precursor chemistry to photoluminescence behavior remains challenging in systems dominated by heterogeneous and surface‐related emissive states. In this work, C‐dots were synthesized via a microwave‐assisted route using three tropical fruit‐derived precursors (acerola, kiwi, and passion fruit), enabling a controlled comparison of precursor‐dependent optical responses. The resulting nanoparticles are quasi‐spherical, with no statistically significant differences in size (with average diameters around 5 nm) or morphology, and lattice spacings around 2.43 Å consistent with turbostratic sp carbon domains. UV–vis absorption and photoluminescence spectra exhibit broad bands with extended visible tails, while excitation‐dependent emission spans 420–650 nm. Quantitative spectral descriptors reveal clear precursor‐dependent differences. Acerola‐derived C‐dots exhibit comparatively narrower emission bands (FWHM of around 110 nm, with a centroid–peak offset of approximately 25 nm), whereas passion fruit samples show broader emission (FWHM ∼150 nm; offset ∼55 nm), indicating a wider distribution of emissive states; kiwi‐derived samples display intermediate behavior. Complementary absorption metrics, including spectral centroid and A360/A450 ratio, follow similar trends. These descriptors establish a model‐independent framework linking precursor composition to optical heterogeneity in C‐dots. MenosCarbon dots synthesized from natural biomass precursors have attracted increasing attention due to their low cost, sustainability, and tunable optical properties. However, establishing robust descriptors linking precursor chemistry to photoluminescence behavior remains challenging in systems dominated by heterogeneous and surface‐related emissive states. In this work, C‐dots were synthesized via a microwave‐assisted route using three tropical fruit‐derived precursors (acerola, kiwi, and passion fruit), enabling a controlled comparison of precursor‐dependent optical responses. The resulting nanoparticles are quasi‐spherical, with no statistically significant differences in size (with average diameters around 5 nm) or morphology, and lattice spacings around 2.43 Å consistent with turbostratic sp carbon domains. UV–vis absorption and photoluminescence spectra exhibit broad bands with extended visible tails, while excitation‐dependent emission spans 420–650 nm. Quantitative spectral descriptors reveal clear precursor‐dependent differences. Acerola‐derived C‐dots exhibit comparatively narrower emission bands (FWHM of around 110 nm, with a centroid–peak offset of approximately 25 nm), whereas passion fruit samples show broader emission (FWHM ∼150 nm; offset ∼55 nm), indicating a wider distribution of emissive states; kiwi‐derived samples display intermediate behavior. Complementary absorption metrics, including spectral centroid and A360/A450 ratio, follow similar trends. These de... Mostrar Tudo |
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Palavras-Chave: |
Descritores espectrais; Fotoluminescência; Heterogeneidade óptica; Nanocarbono; Optical heterogeneity; Spectral descriptors. |
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Thesagro: |
Carbono; Fruta Tropical. |
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Thesaurus Nal: |
Carbon; Carbon nanoparticles; Microwave treatment; Photoluminescence. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
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024 7 $ahttps://doi.org/10.1002/ppsc.70112$2DOI
100 1 $aMÜLLER, D.
245 $aPrecursor‐driven photoluminescence modulation in microwave‐synthesized fruit‐derived carbon dots.$h[electronic resource]
260 $c2026
520 $aCarbon dots synthesized from natural biomass precursors have attracted increasing attention due to their low cost, sustainability, and tunable optical properties. However, establishing robust descriptors linking precursor chemistry to photoluminescence behavior remains challenging in systems dominated by heterogeneous and surface‐related emissive states. In this work, C‐dots were synthesized via a microwave‐assisted route using three tropical fruit‐derived precursors (acerola, kiwi, and passion fruit), enabling a controlled comparison of precursor‐dependent optical responses. The resulting nanoparticles are quasi‐spherical, with no statistically significant differences in size (with average diameters around 5 nm) or morphology, and lattice spacings around 2.43 Å consistent with turbostratic sp carbon domains. UV–vis absorption and photoluminescence spectra exhibit broad bands with extended visible tails, while excitation‐dependent emission spans 420–650 nm. Quantitative spectral descriptors reveal clear precursor‐dependent differences. Acerola‐derived C‐dots exhibit comparatively narrower emission bands (FWHM of around 110 nm, with a centroid–peak offset of approximately 25 nm), whereas passion fruit samples show broader emission (FWHM ∼150 nm; offset ∼55 nm), indicating a wider distribution of emissive states; kiwi‐derived samples display intermediate behavior. Complementary absorption metrics, including spectral centroid and A360/A450 ratio, follow similar trends. These descriptors establish a model‐independent framework linking precursor composition to optical heterogeneity in C‐dots.
650 $aCarbon
650 $aCarbon nanoparticles
650 $aMicrowave treatment
650 $aPhotoluminescence
650 $aCarbono
650 $aFruta Tropical
653 $aDescritores espectrais
653 $aFotoluminescência
653 $aHeterogeneidade óptica
653 $aNanocarbono
653 $aOptical heterogeneity
653 $aSpectral descriptors
700 1 $aDIAS, G. M. V.
700 1 $aGUIOTOKU, M.
700 1 $aBENDO, T.
700 1 $aHOTZA, D.
700 1 $aRAMBO, C. R.
773 $tParticle & Particle Systems Characterization$gv. 43, n. 7, e70112,2026.
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| 1. |  | MÜLLER, D.; DIAS, G. M. V.; GUIOTOKU, M.; BENDO, T.; HOTZA, D.; RAMBO, C. R. Precursor‐driven photoluminescence modulation in microwave‐synthesized fruit‐derived carbon dots. Particle & Particle Systems Characterization, v. 43, n. 7, e70112,2026.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 3 |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 1 | |
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