Pearl-necklace nano-chains from tomato peel lycopene carbon dots: Enhanced Colloidal stability, ph sensing, and antibacterial monitoring.
- 1Cellulose and Paper Department, National Research Centre, 33 El Bohouth Str, P.O. 12622, Dokki Giza, Egypt. [email protected].
Abstract
Transforming industrial tomato peel waste (a dense matrix of lignocellulosic fibers and bioactive lycopene) into advanced protective functional nano-probes. Utilizing a one-pot microwave-assisted hydrothermal route to synthesize carbon dot-decorated nanosheets (N-TP-CDs), which were then evolved into interconnected 1D pearl-necklace nano-chains (PN-NCs) via strategic carboxymethylation (Mercerization Depth = 0.53). Transmission Electron Microscopy (TEM) confirmed a morphological shift to 1D networks of pearls (2.88-4.39 nm), while Density Functional Theory (DFT) calculations revealed a narrowed energy gap (Eg = 3.3170 eV) and an increased dipole moment (36.39 Debye) for enhanced electronic sensitivity. Demonstrated superior colloidal stability, a naked-eye chromogenic response to pH fluctuations, dual-mode selective NIR fluorescence shifts, and near-total antimicrobial efficacy (99.99%±1% against S. aureus and 99.62 ± 2% against E. coli). By merging real-time diagnostic visibility with a potent bacterial inhibition efficiency, this research offers a sustainable, high-performance tool for intelligent food packaging and environmental monitoring.
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BibTeX
@article{tohamy2026pearlnecklace,
title = {{Pearl-necklace nano-chains from tomato peel lycopene carbon dots: Enhanced Colloidal stability, ph sensing, and antibacterial monitoring.}},
author = {Hebat-Allah S Tohamy},
journal = {Discover nano},
year = {2026},
month = oct,
doi = {10.1186/s11671-026-04911-0},
url = {https://europepmc.org/article/MED/42848263},
note = {CC BY},
}
RIS
TY - JOUR
TI - Pearl-necklace nano-chains from tomato peel lycopene carbon dots: Enhanced Colloidal stability, ph sensing, and antibacterial monitoring.
AU - Hebat-Allah S Tohamy
PY - 2026
DA - 2026/10/08
JO - Discover nano
DO - 10.1186/s11671-026-04911-0
UR - https://europepmc.org/article/MED/42848263
AB - Transforming industrial tomato peel waste (a dense matrix of lignocellulosic fibers and bioactive lycopene) into advanced protective functional nano-probes. Utilizing a one-pot microwave-assisted hydrothermal route to synthesize carbon dot-decorated nanosheets (N-TP-CDs), which were then evolved into interconnected 1D pearl-necklace nano-chains (PN-NCs) via strategic carboxymethylation (Mercerization Depth = 0.53). Transmission Electron Microscopy (TEM) confirmed a morphological shift to 1D networks of pearls (2.88-4.39 nm), while Density Functional Theory (DFT) calculations revealed a narrowed energy gap (Eg = 3.3170 eV) and an increased dipole moment (36.39 Debye) for enhanced electronic sensitivity. Demonstrated superior colloidal stability, a naked-eye chromogenic response to pH fluctuations, dual-mode selective NIR fluorescence shifts, and near-total antimicrobial efficacy (99.99%±1% against S. aureus and 99.62 ± 2% against E. coli). By merging real-time diagnostic visibility with a potent bacterial inhibition efficiency, this research offers a sustainable, high-performance tool for intelligent food packaging and environmental monitoring.
SN - 2731-9229
ER -