Direct Functionalization of Nanodiamonds with Maleimide

Tall, Omar El; Hou, Yuanfang; Abou-Hamad, Edy; Raja, Inam ul Haq; Hedhili, Mohamed N.; Peng, Wei; Mahfouz, Remi; Bakr, Osman M.; Beaujuge, Pierre M.

doi:10.1021/cm500036x

Cited by 28 publications

(14 citation statements)

References 40 publications

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“…The technique allows the detection of carbon atoms from the surface and one or two near‐surface layers. CP/MAS reveals a line at 45 ppm which is typical of aliphatic carbons and is assigned to CH and CH 2 groups in accordance with literature reports 22,49‐54 (the sample contains COH groups, which exhibit a 13 C chemical shift of 75 ppm). The CH, CH 2 , and COH peaks are found to be smaller as compared to the reports by Dubois and Panich, 49‐54 indicating that oxidation results in a drastic reduction in the number of hydrocarbon groups.…”

Section: Resultssupporting

confidence: 87%

“…The aggregates contain incombustible metal and oxide impurities that should be removed before the DNDs can be employed in any application 20 . Also, Fourier transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM) results confirm that the aggregate surface is covered with undesired amorphous functionalities 21‐23 . Air‐oxidation at elevated temperatures has been successfully used to remove these organic surface groups, and was recently shown to enhance transverse spin‐coherence time of nitrogen‐vacancy centers crucial for making DNDs compatible with quantum device applications 21,24 .…”

Section: Introductionmentioning

confidence: 99%

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Fresh insights into detonation nanodiamond aggregation: An X‐ray photoelectron spectroscopy, thermogravimetric analysis, and nuclear magnetic resonance study

Katsiev

Solovyeva

Mahfouz

et al. 2021

Engineering Reports

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Detonation nanodiamonds (DNDs) are known to be produced in aggregated clusters of a few nanometer‐sized primary crystalline particles embedded in an amorphous carbon matrix exhibiting high degree of polydispersity. A commonly accepted mechanism behind DND aggregation is the bridging of primary particles via oxygen containing functionalities. Here, we provide definitive spectroscopic evidence in favor of this working mechanism by carrying out systematic chemical compositional analysis on monodispersed DND aggregates of various sizes. Oxygen content is found to increase proportionally with the aggregate size confirming the role of oxygen containing functionalities as a cross‐linker. Solid‐state nuclear magnetic resonance data confirms these linkers to be of ether (COC) nature. Our results imply that oxygen content in DNDs can be independently tuned by varying the aggregate size, a knowledge which might benefit other applications, in addition. Next, we use this understanding to engineer the DND surfaces via an acid hydrolysis step to strip off these oxygen functionalities leading to size reduction of ca. 150 nm as‐received DND aggregates to ca. 40 nm with >90% yields, without resorting to any other pre‐ or post‐hydrolysis treatment such as surface functionalization or milling.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Fresh insights into detonation nanodiamond aggregation: An X‐ray photoelectron spectroscopy, thermogravimetric analysis, and nuclear magnetic resonance study

Katsiev

Solovyeva

Mahfouz

et al. 2021

Engineering Reports

Self Cite

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“…In a final step, all kinds of biomolecules can be attached to the linker. Importantly, this step can be performed under mild and biocompatible conditions (depending on the application, biomolecules can also be attached in fewer steps if, e.g., the molecule binds directly to the functional groups introduced in the first step [ 69 ]).…”

Section: Biolabelsmentioning

confidence: 99%

Improving surface and defect center chemistry of fluorescent nanodiamonds for imaging purposes—a review

2015

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Diamonds are widely used for jewelry owing to their superior optical properties accounting for their fascinating beauty. Beyond the sparkle, diamond is highly investigated in materials science for its remarkable properties. Recently, fluorescent defects in diamond, particularly the negatively charged nitrogen-vacancy (NV-) center, have gained much attention: The NV- center emits stable, nonbleaching fluorescence, and thus could be utilized in biolabeling, as a light source, or as a Förster resonance energy transfer donor. Even more remarkable are its spin properties: with the fluorescence intensity of the NV- center reacting to the presence of small magnetic fields, it can be utilized as a sensor for magnetic fields as small as the field of a single electron spin. However, a reproducible defect and surface and defect chemistry are crucial to all applications. In this article we review methods for using nanodiamonds for different imaging purposes. The article covers (1) dispersion of particles, (2) surface cleaning, (3) particle size selection and reduction, (4) defect properties, and (5) functionalization and attachment to nanostructures, e.g., scanning probe microscopy tips.Graphical AbstractWe review how diamond surface and defect chemistry can be optimized for different (bio) applications

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“…4c) could be assigned to the five membered rings of imide. 54 These results indicated that BM had been attached to the amino groups. We can also confirm the successful linking of fluorescent probes from the UV-vis measurements.…”

Section: Preparation and Characterization Of The Chemosensormentioning

confidence: 93%

Conjugation-induced fluorescence labelling of mesoporous silica nanoparticles for the sensitive and selective detection of copper ions in aqueous solution

et al. 2014

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Direct Functionalization of Nanodiamonds with Maleimide

Cited by 28 publications

References 40 publications

Fresh insights into detonation nanodiamond aggregation: An X‐ray photoelectron spectroscopy, thermogravimetric analysis, and nuclear magnetic resonance study

Fresh insights into detonation nanodiamond aggregation: An X‐ray photoelectron spectroscopy, thermogravimetric analysis, and nuclear magnetic resonance study

Improving surface and defect center chemistry of fluorescent nanodiamonds for imaging purposes—a review

Conjugation-induced fluorescence labelling of mesoporous silica nanoparticles for the sensitive and selective detection of copper ions in aqueous solution

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