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At least 145 records · Page 8
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ce(AlZn)2 by Materials Project

Al2Zn2Ce crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Zn and eight equivalent Al atoms. All Ce–Zn bond lengths are 3.21 Å. All Ce–Al bond lengths are 3.45 Å. Zn is bonded in a 9-coordinate geometry to four equivalent Ce, one Zn, and four equivalent Al atoms. The Zn–Zn bond length is 2.44 Å. All Zn–Al bond lengths are 2.59 Å. Al is bonded to four equivalent Ce and four equivalent Zn atoms to form a mixture of distorted edge, face, and corner-sharing AlCe4Zn4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(AlGa)2 by Materials Project

CeGa2Al2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Ga and eight equivalent Al atoms. All Ce–Ga bond lengths are 3.21 Å. All Ce–Al bond lengths are 3.50 Å. Ga is bonded in a 9-coordinate geometry to four equivalent Ce, one Ga, and four equivalent Al atoms. The Ga–Ga bond length is 2.50 Å. All Ga–Al bond lengths are 2.61 Å. Al is bonded to four equivalent Ce and four equivalent Ga atoms to form a mixture of distorted corner, edge, and face-sharing AlCe4Ga4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(NiGe)2 by Materials Project

CeNi2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Ni and eight equivalent Ge atoms. All Ce–Ni bond lengths are 3.20 Å. All Ce–Ge bond lengths are 3.19 Å. Ni is bonded in a 4-coordinate geometry to four equivalent Ce and four equivalent Ge atoms. All Ni–Ge bond lengths are 2.38 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Ni, and one Ge atom. The Ge–Ge bond length is 2.54 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(SiRh)2 by Materials Project

CeRh2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Si atoms. All Ce–Rh bond lengths are 3.26 Å. All Ce–Si bond lengths are 3.15 Å. Rh is bonded to four equivalent Ce and four equivalent Si atoms to form a mixture of distorted face, edge, and corner-sharing RhCe4Si4 tetrahedra. All Rh–Si bond lengths are 2.43 Å. Si is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Rh, and one Si atom. The Si–Si bond length is 2.47 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(SiIr)2 by Materials Project

CeIr2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Ir and eight equivalent Si atoms. All Ce–Ir bond lengths are 3.26 Å. All Ce–Si bond lengths are 3.15 Å. Ir is bonded to four equivalent Ce and four equivalent Si atoms to form a mixture of distorted corner, edge, and face-sharing IrCe4Si4 tetrahedra. All Ir–Si bond lengths are 2.43 Å. Si is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Ir, and one Si atom. The Si–Si bond length is 2.46 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(GeRh)2 by Materials Project

CeRh2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Ge atoms. All Ce–Rh bond lengths are 3.35 Å. All Ce–Ge bond lengths are 3.22 Å. Rh is bonded to four equivalent Ce and four equivalent Ge atoms to form a mixture of distorted edge, face, and corner-sharing RhCe4Ge4 tetrahedra. All Rh–Ge bond lengths are 2.48 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Rh, and one Ge atom. The Ge–Ge bond length is 2.57 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(FeP)2 by Materials Project

CeFe2P2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Fe and eight equivalent P atoms. All Ce–Fe bond lengths are 3.18 Å. All Ce–P bond lengths are 3.06 Å. Fe is bonded to four equivalent Ce and four equivalent P atoms to form a mixture of distorted face, edge, and corner-sharing FeCe4P4 tetrahedra. All Fe–P bond lengths are 2.20 Å. P is bonded in a 4-coordinate geometry to four equivalent Ce and four equivalent Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(BIr)2 by Materials Project

CeIr2B2 is alpha Pu-derived structured and crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Ce is bonded in a 10-coordinate geometry to eight equivalent Ir and six equivalent B atoms. There are four shorter (3.07 Å) and four longer (3.32 Å) Ce–Ir bond lengths. There are two shorter (3.00 Å) and four longer (3.13 Å) Ce–B bond lengths. Ir is bonded in a 4-coordinate geometry to four equivalent Ce and four equivalent B atoms. There are two shorter (2.09 Å) and two longer (2.19 Å) Ir–B bond lengths. B is bonded in a 4-coordinate geometry to three equivalent Ce and four equivalent Ir atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(PPd)2 by Materials Project

CePd2P2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Pd and eight equivalent P atoms. All Ce–Pd bond lengths are 3.26 Å. All Ce–P bond lengths are 3.12 Å. Pd is bonded to four equivalent Ce, four equivalent Pd, and four equivalent P atoms to form a mixture of distorted face, edge, and corner-sharing PdCe4P4Pd4 cuboctahedra. All Pd–Pd bond lengths are 2.92 Å. All Pd–P bond lengths are 2.49 Å. P is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Pd, and one P atom. The P–P bond length is 2.24 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(Cd10Ni)2 by Materials Project

Ce(NiCd10)2 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ce is bonded in a 4-coordinate geometry to sixteen Cd atoms. There are four shorter (3.43 Å) and twelve longer (3.48 Å) Ce–Cd bond lengths. Ni is bonded to twelve Cd atoms to form NiCd12 cuboctahedra that share corners with six equivalent NiCd12 cuboctahedra, edges with eighteen equivalent CdCeCd10Ni cuboctahedra, and faces with six equivalent CdCeCd10Ni cuboctahedra. There are six shorter (2.80 Å) and six longer (3.07 Å) Ni–Cd bond lengths. There are three inequivalent Cd sites. In the first Cd site, Cd is bonded in a distorted linear geometry to two equivalent Ni and ten Cd atoms. There are a spread of Cd–Cd bond distances ranging from 2.98–3.12 Å. In the second Cd site, Cd is bonded to one Ce, one Ni, and ten Cd atoms to form distorted CdCeCd10Ni cuboctahedra that share corners with fifteen equivalent CdCeCd10Ni cuboctahedra, edges with two equivalent CdCeCd10Ni cuboctahedra, edges with three equivalent NiCd12 cuboctahedra, a faceface with one NiCd12 cuboctahedra, and faces with fifteen equivalent CdCeCd10Ni cuboctahedra. There are a spread of Cd–Cd bond distances ranging from 2.93–3.37 Å. In the third Cd site, Cd is bonded in a distorted linear geometry to two equivalent Ce and twelve equivalent Cd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(GeAu)2 by Materials Project

CeAu2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight equivalent Au and eight equivalent Ge atoms. All Ce–Au bond lengths are 3.45 Å. All Ce–Ge bond lengths are 3.36 Å. Au is bonded to four equivalent Ce and four equivalent Ge atoms to form a mixture of distorted corner, edge, and face-sharing AuCe4Ge4 tetrahedra. All Au–Ge bond lengths are 2.64 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Au, and one Ge atom. The Ge–Ge bond length is 2.42 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce(Cd10Pd)2 by Materials Project

Ce(PdCd10)2 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ce is bonded in a 4-coordinate geometry to sixteen Cd atoms. There are four shorter (3.47 Å) and twelve longer (3.49 Å) Ce–Cd bond lengths. Pd is bonded to twelve Cd atoms to form PdCd12 cuboctahedra that share corners with six equivalent PdCd12 cuboctahedra, edges with eighteen equivalent CdCeCd10Pd cuboctahedra, and faces with six equivalent CdCeCd10Pd cuboctahedra. There are six shorter (2.84 Å) and six longer (3.15 Å) Pd–Cd bond lengths. There are three inequivalent Cd sites. In the first Cd site, Cd is bonded in a distorted linear geometry to two equivalent Pd and six equivalent Cd atoms. There are two shorter (3.01 Å) and four longer (3.18 Å) Cd–Cd bond lengths. In the second Cd site, Cd is bonded to one Ce, one Pd, and ten Cd atoms to form distorted CdCeCd10Pd cuboctahedra that share corners with fifteen equivalent CdCeCd10Pd cuboctahedra, edges with two equivalent CdCeCd10Pd cuboctahedra, edges with three equivalent PdCd12 cuboctahedra, a faceface with one PdCd12 cuboctahedra, and faces with fifteen equivalent CdCeCd10Pd cuboctahedra. There are a spread of Cd–Cd bond distances ranging from 2.93–3.39 Å. In the third Cd site, Cd is bonded in a distorted linear geometry to two equivalent Ce and twelve equivalent Cd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce by Materials Project

Ce is Tungsten structured and crystallizes in the cubic Im-3m space group. The structure is three-dimensional. Ce is bonded in a distorted body-centered cubic geometry to eight equivalent Ce atoms. All Ce–Ce bond lengths are 3.27 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce by Materials Project

Ce is Magnesium structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ce is bonded to twelve equivalent Ce atoms to form a mixture of edge, face, and corner-sharing CeCe12 cuboctahedra. There are six shorter (3.26 Å) and six longer (3.44 Å) Ce–Ce bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce by Materials Project

Ce is Copper structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ce is bonded to twelve equivalent Ce atoms to form a mixture of edge, face, and corner-sharing CeCe12 cuboctahedra. All Ce–Ce bond lengths are 3.34 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce by Materials Project

Ce is Copper structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Ce is bonded to twelve equivalent Ce atoms to form a mixture of edge, face, and corner-sharing CeCe12 cuboctahedra. There are a spread of Ce–Ce bond distances ranging from 3.30–3.36 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce by Materials Project

Ce is alpha U structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ce is bonded to twelve equivalent Ce atoms to form a mixture of distorted corner, edge, and face-sharing CeCe12 cuboctahedra. There are a spread of Ce–Ce bond distances ranging from 2.92–3.59 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Atomically Precise Hexanuclear Ce(IV) Clusters as Functional Fluorescent Nanosensors for Rapid One-Step Detection of PFAS

Here, the presence of poly- and perfluoroalkyl substances (PFAS) in the environment is associated with adverse health effects but measuring PFAS is challenging due to the associated high cost and technical complexities of the analysis. Here, the reactivity of atomically precise metal-oxo clusters is reported and the foundation for their use is provided as fluorescent nanosensors for PFAS detection. The material comprises crystalline, water soluble, hexanuclear cerium-oxo clusters [Ce 6 (µ 3 -O) 4 (µ 3 -OH) 4 ] 12+ decorated with glycine molecules (Ce-Gly) characterized by fluorescence emission at 353 nm. The Ce-Gly fluorescence is found sensitive to long chain carboxylated PFAS of CF 3 –(CF 2 ) n –, where n ≥ 6, such as perfluorooctanoic, perfluorononanoic and perfluorodecanoic acids. This unique reactivity leads to a change in the emission spectra in a concentration dependent manner, enabling PFAS detection through ligand exchange and aggregation-induced emission (AIE) enhancement. No significant cross-reactivity from potentially co-existing species, including sulfonated PFAS, octanoic and dodecanoic acids, humic acid, and inorganic ions is observed. With an optimal concentration of 3.3 µg mL -1 Ce-Gly, the method demonstrated detection limits of 0.24 ppb for PFOA and 0.4 ppb for PFNA. These findings highlight the potential of fluorescence-based detection strategies utilizing nanoscale probes such as Ce-Gly as fluorescent probes and nanosensors for PFAS.

77 NANOSCIENCE AND NANOTECHNOLOGY↗