DOI: 10.5281/zenodo.15394120
title: The dataset for the article: "Tunable Plasmonic Response of Silver Nanoparticles Entangled in  Detonation Nanodiamond Network via Colloidal Self-Assembly".

description: Dataset for the article "Tunable Plasmonic Response of Silver Nanoparticles Entangled in Detonation Nanodiamond Network via Colloidal Self-Assembly"

Vendula Hrnčířová1, Markéta Šlapal Bařinková1, Muhammad Qamar1, Kateřina Kolářová2, Bohuslav Rezek1

1 Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27, Prague, Czechia

2 Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague 6, Czechia

fig1ab.xlsx - Absorption spectra of pristine detonation nanodiamonds (DND) and silver nanoparticles (AgNP). (Column 1) wavelength,  (A-D1 - A-D3) triplicate AgNP (A: 18 μg/mL, B: 9 μg/mL, C: 4.5 μg/mL, D: 2.25 μg/mL)(E1 - E3) triplicate of DND 50 mg/mL, (E4 - E6) triplicate of DND 25 mg/mL, (E7 - E9) triplicate of DND 12.5 mg/mL, (E10 - E12) triplicate of DND 1.25 mg/mL, (F1 - F15) blank sample (water).fig1c3b.xlsx - DLS, ZP, and pH of DND dilution. (Column 1) DND concentration [mg/mL], (Column 2) DND mean size from DLS number distributions in nm, (Column 3) DND zeta potential in mV, (Column 4) DND pH, (Column 5) AgNP concentration [μg/mL] in the AgDND mixture with 12.5 mg/mL DND, (Column 6) AgDND zeta potential in mV, (Column 7) AgDND pH

fig2a.png - A photo from the optical microscope of AgNP colloidal mixture sedimentsfig2b.tif - SEM micrograph of AgDND (Ag 18 μg/mL, DND 1.25 mg/mL). (left) - from secondary electrons, (right) - from back-scattered electrons.fig2c.jpg - TEM image of AgDND (Ag 18 μg/mL, DND 1.25 mg/mL). - 30 min sample.fig2di.jpg - TEM image of AgDND (Ag 18 μg/mL, DND 1.25 mg/mL). - 30 min sample.fig2dii.jpg - TEM image of AgDND (Ag 18 μg/mL, DND 1.25 mg/mL). - fresh sample.fig2diii.jpg - TEM image of AgDND (Ag 18 μg/mL, DND 1.25 mg/mL). - fresh sample.fig2div.jpg - TEM image of AgDND (Ag 18 μg/mL, DND 1.25 mg/mL). - fresh sample.

fig3ai.jpg - A photo of diluted pristine DND (12.5 mg/mL)fig3aii.jpg - A photo of pristine AgNP (18 μg/mL)fig3aiii.jpg - A photo of AgDND mixture (AgNP: 18 μg/mL, 12.5 mg/mL, right after the preparation)fig3aiv.jpg - A photo of AgDND mixture (AgNP: 18 μg/mL, 12.5 mg/mL, left to stand for 1 hour)fig3av.jpg - A photo of AgDND mixture (AgNP: 18 μg/mL, 12.5 mg/mL, gently shaken sediments)fig3ci.png - A photo of the well-plate containing fresh colloidal mixtures.fig3cii.png - A photo of the well-plate containing colloidal mixtures after a 1.5-hour spectrophotometry measurement.fig3e.xlsx Absorption spectra of colloidal mixture of 12.5 mg/mL detonation nanodiamonds (DND) and silver nanoparticles (AgNP - 18 or 2.25 μg/mL). (Column 1) wavelength, (A) triplicate of pristine AgNP (A1-A3 18 μg/mL, A4-A6: 2.25 μg/mL),(B-P): triplicate of colloidal mixture AgDND (AgNP: X1-X3 18 μg/mL, X4-X6: 2.25 μg/mL), (Q1 - Q6) blank sample (water). X: time period (A - time zero, B - 4.5 minutes, C - 9 minutes, D - 13.5 minutes, …)

fig4.xlsx - Absorption spectra of colloidal mixtures of detonation nanodiamonds (DND) and silver nanoparticles (AgNP). (Column 1) wavelength, (A) 18 μg/mL AgNP in the mixture, (B) 9 μg/mL AgNP in the mixture, (C) 4.5 μg/mL AgNP in the mixture, (D) 2.25 μg/mL AgNP in the mixture, (X1 - X3) 50 mg/mL DND in the mixture, (X4 - X6) 25 mg/mL DND in the mixture, (X7 - X9) 12.5 mg/mL DND in the mixture, (X10 - X12) 1.25 mg/mL DND in the mixture, (E1 - E12) blank sample (water)

fig5a.xlsx - Electromagnetic field of AgDND structure (model of 1 AgNP (20 nm) and 1 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m)) gained from RF Module COMSOL with varying distance between them from 5 nm to contact observed in water. (Column 1) - 0 nm, (Column 2) - 1 nm, (Column 3) - 2 nm, (Column 4) - 3 nm, (Column 5) - 4 nm, (Column 6) - 5 nm. (Row 1) distance, (Row 2) order of values - wavelength (nm), frequency (Hz), sigma_abs (m^2). Wavelength from 300 nm to 600 nm with 3 nm step.fig5a.png - Simulation of the electromagnetic field of model of 1 AgNP (20 nm) and 1 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) in water at 387 nm and 3 nm distance.fig5b.xlsx - Electromagnetic field of AgDND structure (model of 3 AgNP (20 nm) and 1 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m)) gained from RF Module COMSOL with varying distance between AgNP and DND from 5 nm to contact observed in water. (Column 1) - 0 nm, (Column 2) - 1 nm, (Column 3) - 2 nm, (Column 4) - 3 nm, (Column 5) - 4 nm, (Column 6) - 5 nm. (Row 1) distance, (Row 2) order of values - wavelength (nm), frequency (Hz), sigma_abs (m^2). Wavelength from 300 nm to 600 nm with 3 nm step.fig5b.png - Simulation of the electromagnetic field of model of 3 AgNP (20 nm) and 1 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) in water at 405 nm and 3 nm distance.fig5c.xlsx - Electromagnetic field of AgDND structure (model of 1 AgNP (20 nm) and chain (parallel to polarization) of 9 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m)) gained from RF Module COMSOL with varying distance between them from 5 nm to contact observed in water. (Column 1) - 0 nm, (Column 2) - 1 nm, (Column 3) - 2 nm, (Column 4) - 3 nm, (Column 5) - 4 nm, (Column 6) - 5 nm. (Row 1) distance, (Row 2) order of values - wavelength (nm), frequency (Hz), sigma_abs (m^2). Wavelength from 300 nm to 600 nm with 3 nm step.fig5c.png - Simulation of the electromagnetic field of model of 1 AgNP (20 nm) and chain (parallel to polarization) of 9 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) in water at 387 nm and 3 nm distance.fig5dfg.xlsx - Electromagnetic field of AgDND structure (Column 1) model of 3 AgNP (20 nm) and chain (parallel to polarization, 1 AgNP above, 2 AgNP below) of 9 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m)) gained from RF Module COMSOL at 3 nm distance observed in water. (Column 2) model of 1 AgNP (20 nm) in a DND circle (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) gained from RF Module COMSOL at 1 nm distance observed in water. (Column 3) model of 1 AgNP (20 nm) in a DND semicircle (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) gained from RF Module COMSOL at 1 nm distance observed in water.(Row 1) distance, (Row 2) order of values - wavelength (nm), frequency (Hz), sigma_abs (m^2). Wavelength from 300 nm to 600 nm with 3 nm step.fig5d.png - Simulation of the electromagnetic field of model of 3 AgNP (20 nm) and chain (parallel to polarization, 1 AgNP above, 2 AgNP below) of 9 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) in water at 423 nm and 3 nm distance.fig5e.xlsx - Electromagnetic field of AgDND structure (model of 3 AgNP (20 nm) and chain (perpendicular to polarization, 1 AgNP right, 2 AgNP left) of 9 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) in water) gained from RF Module COMSOL with varying distance between them from 10 nm to contact observed in water. (Column 1) - 0 nm, (Column 2) - 1 nm, (Column 3) - 2 nm, (Column 4) - 3 nm, (Column 5) - 4 nm, (Column 6) - 5 nm. (Column 7) - 10 nm, (Row 1) distance, (Row 2) order of values - wavelength (nm), frequency (Hz), sigma_abs (m^2). Wavelength from 300 nm to 600 nm with 3 nm step.fig5e.png - Simulation of the electromagnetic field of model of 3 AgNP (20 nm) and chain (perpendicular to polarization, 1 AgNP right, 2 AgNP left) of 9 DND (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) in water at 396 nm and 3 nm distance.fig5f.png - Simulation of the electromagnetic field of model of 1 AgNP (20 nm) in a DND circle (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) gained from RF Module COMSOL in water at 393 nm and 1 nm distance.fig5g.png - Simulation of the electromagnetic field of model of 1 AgNP (20 nm) in a DND semicircle (4 nm, non conductive) with 0.5 nm amorphous carbon layer (2×10^3 S/m) gained from RF Module COMSOL in water at 390 nm and 1 nm distance.

 

This study explores the self-assembly of nanocomplexes formed by well-defined 20-nm colloidal silver nanoparticles (AgNPs) with 4-nm detonation nanodiamonds (DNDs), focusing on plasmonic resonance. Water-diluted DNDs spontaneously aggregate into chain-like structures entangling AgNPs, forming stable nanocomplexes that sediment within minutes but maintain their plasmonic properties even after redispersion, indicating robust interparticle bonding and interactions. While driven by electrostatics, the binding is stabilized by surface chemistry. AgNPs become spatially entangled yet not aggregated within the DND network, resulting in 8-nm red shift of the plasmonic peak. This nanocomplex morphology is supported by TEM images and COMSOL numerical simulations. Modelling shows that a 3-nm gap between AgNP and DND particles consistently reproduces experimental data, confirming that DNDs modulate the plasmonic electromagnetic field. Moreover, the plasmonic peaks undergo pronounced intensity changes depending on AgNP concentration: low concentrations enhance (up to +78%), whereas high concentrations lead to suppression (down to -49%) of AgNP plasmonic absorption, independent of DND content. The model shows that it is attributed to AgNP field redistribution and interference. The AgNP-DND entangled nanocomplexes thus offer a simple route to a stable hybrid nanoparticle system with tunable optical properties for diverse applications, from biosensing to catalysis, energy conversion or diamond quantum technologies.