The particle size-dependent photoluminescence of nanodiamonds

Chung, Pei‐Hua; Perevedentseva, E.; Cheng, Chia‐Liang

doi:10.1016/j.susc.2007.04.150

Cited by 119 publications

(77 citation statements)

References 28 publications

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“…24 Furthermore, the effect of nanodiamond size on fluorescent characteristics of commercially available nanodiamond particles has been demonstrated in other size ranges and diamond types. 16,25 Specifically, in our study, the 700 nm F-NDP NV exhibited 10-60 times higher NIR emission intensity than the …”

Section: Discussionmentioning

confidence: 50%

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Vascular thrombus imaging in vivo via near-infrared fluorescent nanodiamond particles bioengineered with the disintegrin bitistatin (Part II)

Gerstenhaber¹,

Barone²,

Marcinkiewicz³

et al. 2017

IJN

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The aim of this feasibility study was to test the ability of fluorescent nanodiamond particles (F-NDP) covalently conjugated with bitistatin (F-NDP-Bit) to detect vascular blood clots in vivo using extracorporeal near-infrared (NIR) imaging. Specifically, we compared NIR fluorescence properties of F-NDP with N-V (F-NDP NV ) and N-V-N color centers and sizes (100–10,000 nm). Optimal NIR fluorescence and tissue penetration across biological tissues (rat skin, porcine axillary veins, and skin) was obtained for F-NDP NV with a mean diameter of 700 nm. Intravital imaging (using in vivo imaging system [IVIS]) in vitro revealed that F-NDP NV -loaded glass capillaries could be detected across 6 mm of rat red-muscle barrier and 12 mm of porcine skin, which equals the average vertical distance of a human carotid artery bifurcation from the surface of the adjacent skin (14 mm). In vivo, feasibility was demonstrated in a rat model of occlusive blood clots generated using FeCl 3 in the carotid artery bifurcation. Following systemic infusions of F-NDP NV -Bit (3 or 15 mg/kg) via the external carotid artery or femoral vein (N=3), presence of the particles in the thrombi was confirmed both in situ via IVIS, and ex vivo via confocal imaging. The presence of F-NDP NV in the vascular clots was further confirmed by direct counting of fluorescent particles extracted from clots following tissue solubilization. Our data suggest that F-NDP NV -Bit associate with vascular blood clots, presumably by binding of F-NDP NV -Bit to activated platelets within the blood clot. We posit that F-NDP NV -Bit could serve as a noninvasive platform for identification of vascular thrombi using NIR energy monitored by an extracorporeal device.

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Section: Discussionmentioning

confidence: 50%

“…16 The NIR emission of identical mass per milliliter of F-NDP NV was compared for particles of three different sizes (Figure 2). The lowest fluorescence intensity was observed for smallest (100 nm) particles, while the highest fluorescence emission was observed for 700 nm F-NDP.…”

Section: Comparison Of Nir Fluorescence Intensity Of F-ndp Nvn and F-mentioning

confidence: 99%

Vascular thrombus imaging in vivo via near-infrared fluorescent nanodiamond particles bioengineered with the disintegrin bitistatin (Part II)

Gerstenhaber¹,

Barone²,

Marcinkiewicz³

et al. 2017

IJN

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“…However, upon oxidation this grows into a sharp spectral feature (blue spectrum, Fig. S2) signaling significant removal of the sp 2 shell [28,29].…”

Section: Resultsmentioning

confidence: 99%

“…Prior to the removal of sp 2 shell through oxidation, DNDs exhibit a broad featureless photoluminescence (PL) spectrum. This has been linked to the presence of defects in the graphitic shell [27][28][29]. However, a direct evidence of such defects has not yet been reported.…”

Section: Resultsmentioning

confidence: 99%

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On the relation between chemical composition and optical properties of detonation nanodiamonds

Kirmani

Peng

Mahfouz

et al. 2015

Carbon

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a b s t r a c tThe morphology and presence of impurities strongly influence mechanical, optical, electrical, and thermal properties of detonation nanodiamonds (DNDs). Here we report insights on the chemical composition and its effect on the optical properties of the DNDs obtained by rate-zonal density gradient ultracentrifugation. Herein, for the first time, a detailed valence band structure of as-prepared and oxidized DNDs is reported. Photoemission spectroscopy (PES) measurements demonstrate that the defects, originating from fullerene-like C bonding in the sp 2 shells of the DNDs, are governing the literature-reported loss of the emission spectral features arising from the nitrogen-vacancy (NV) center excitations. X-ray photoelectron spectroscopy (XPS) measurements reveal that nitrogen is present in the DNDs in the form of N-O bonded species located at the surface region/sp 2 shells, while in core of the DND it is in the form of N-C/N@C species.

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Nanometrology

Herrera-Basurto

Simonet

2000

Encyclopedia of Analytical Chemistry

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Nanometrology can be defined as the science of measurement at the nanoscale level. Nanometrological measurements include not only length or size (shape, aspect ratio, and size distribution) but also chemical composition, nanoparticle concentrations, and optical, force, mass, electrical, and various other types of properties. This article highlights the importance of nanometrology, with special emphasis on size distribution measurements. Nanoparticles are classified and the role of standards is examined. Finally, selected nanometrological methods are discussed in terms of benefits and shortcomings.

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The particle size-dependent photoluminescence of nanodiamonds

Cited by 119 publications

References 28 publications

Vascular thrombus imaging in vivo via near-infrared fluorescent nanodiamond particles bioengineered with the disintegrin bitistatin (Part II)

Vascular thrombus imaging in vivo via near-infrared fluorescent nanodiamond particles bioengineered with the disintegrin bitistatin (Part II)

On the relation between chemical composition and optical properties of detonation nanodiamonds

Nanometrology

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