Synthesis of Nanocrystalline Gd<sub>2</sub>O<sub>2</sub>NCN from a Versatile Single‐source Precursor

The new scandium(III) carbodiimides Sc2(CN2)3 and Sc2O2(CN2) were prepared by solid‐state metathesis reactions between Li2(CN2) and ScCl3 and, regarding Sc2O2(CN2), Sc2O3 was added. The X‐ray powder diffraction pattern refinements lead to a trigonal‐rhombohedral (R3c) crystal system for Sc2(CN2)3 and to an orthorhombic (Immm) crystal system for Sc2O2(CN2). The structure of Sc2(CN2)3 is isotypic to the well‐known rare earth carbodiimides RE2(CN2)3 with the smaller cations RE = Tm, Yb, and Lu, whereas Sc2O2(CN2) is not isotypic to the known RE2O2(CN2) (RE = Y, La, Ce–Gd, except Pm) compounds. Both crystal structures are represented by layered arrangements of scandium, respectively scandium and oxide, alternating with carbodiimide layers.

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Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc₂(CN₂)₃ and Sc₂O₂(CN₂)

Kallenbach

Ströbele

Meyer

2020

Zeitschrift anorg allge chemie

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Preparation of bismuth oxycarbodiimide Bi2O2NCN by a liquid-phase process

Sumioka,

Tarutani,

Katagiri

et al. 2023

J Sol-Gel Sci Technol

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Layered Double Hydroxide-Based MRI/CT Dual Modal Contrasting Agent With Homogeneous Particle Size

Jung

Park

2021

Clays and clay miner.

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The development of nanoparticles incorporating Gd3+ has attracted interest in the field of contrasting nanomedicine for magnetic resonance (MR) and computed tomography (CT). In order to achieve an effective contrasting performance, the amount and stability of Gd incorporated as well as particle-size control of the nanoparticles should be considered simultaneously. In the current study, Gd-diethylenetriaminepentaacetate(Gd-DTPA) was incorporated into layered double hydroxide (LDH) to meet the physicochemical properties required for MR-CT dual contrasting nanomedicine. Strategically, the particle size and nanometer incorporation of Gd-DTPA into LDH (GL-R hybrid) were controlled homogeneously using the reverse micelle method. X-ray diffraction showed that the hybrid obtained possessed a hydrotalcite phase. Dynamic light scattering and electron microscopic analyses showed that the hybrid had a controlled size of <200 nm with significant homogeneity. Fast Fourier-transform of transmission electron microscopy confirmed that the platelets of the GL-R hybrids were oriented randomly to form inter-particle space, enabling the Gd-DTPA moiety to be encapsulated stably. The encapsulation efficiency of Gd-DTPA was 20.8%, which was sufficiently high compared with other Gd-DTPA-incorporatedLDH. According to X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy, Gd-DTPA incorporated in the hybrid preserved its structure intact. Its potential as a dual modal contrast agent was demonstrated by measuring the concentration-dependent Hounsfield unit and magnetic resonance relaxivity, which were determined to be 230 at 2 mg/mL and 5.8 in the range ~0.2–1 mM-Gd, respectively.

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Synthesis of Nanocrystalline Gd₂O₂NCN from a Versatile Single‐source Precursor

Abstract: Abstract. Nanocrystalline Gd 2 O 2 NCN (P3m1, crystallite size 30-40 nm) was synthesized upon ammonolysis of bis [[(N-carboxymethyl,N-carboxy-κO-methyl)

Cited by 3 publications

References 63 publications

Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc₂(CN₂)₃ and Sc₂O₂(CN₂)

Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc₂(CN₂)₃ and Sc₂O₂(CN₂)

Preparation of bismuth oxycarbodiimide Bi2O2NCN by a liquid-phase process

Layered Double Hydroxide-Based MRI/CT Dual Modal Contrasting Agent With Homogeneous Particle Size

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Synthesis of Nanocrystalline Gd2O2NCN from a Versatile Single‐source Precursor

Abstract: Abstract. Nanocrystalline Gd 2 O 2 NCN (P3m1, crystallite size 30-40 nm) was synthesized upon ammonolysis of bis [[(N-carboxymethyl,N-carboxy-κO-methyl)

Cited by 3 publications

References 63 publications

Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc2(CN2)3 and Sc2O2(CN2)

Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc2(CN2)3 and Sc2O2(CN2)

Preparation of bismuth oxycarbodiimide Bi2O2NCN by a liquid-phase process

Layered Double Hydroxide-Based MRI/CT Dual Modal Contrasting Agent With Homogeneous Particle Size

Contact Info

Product

Resources

About

Synthesis of Nanocrystalline Gd₂O₂NCN from a Versatile Single‐source Precursor

Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc₂(CN₂)₃ and Sc₂O₂(CN₂)

Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc₂(CN₂)₃ and Sc₂O₂(CN₂)