Double protected lanthanide fluorescence core@shell colloidal hybrid for the selective and sensitive detection of ClO−

Zhou, Zhan; Gu, Jiapei; Qiao, Xiaoguang; Wu, Haixia; Fu, Hong-Ru; Wang, Lin; Li, Huanyong; Ma, Lu-Fang

doi:10.1016/j.snb.2018.11.103

Cited by 70 publications

(9 citation statements)

References 44 publications

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“…To date, a range of hollow spherical materials have been fabricated using noble metals (e.g., Pt), oxides (e.g., TiO2, SiO2, LiMn2O4), and carbon materials, among others [6][7][8]. However, most such materials have submicron sizes [6,9,10] and can only be obtained through complicated and expensive templating strategies [11]; solid hollow nanospheres with a diameter of a few nanometres have been rarely reported [12][13][14]. This largely hinders the potential applications of hollow spherical materials in dimension-selected areas.…”

Section: Introductionmentioning

confidence: 99%

Tailoring structure and surface chemistry of hollow allophane nanospheres for optimization of aggregation by facile methyl modification

Thill

Yuan

et al. 2020

Applied Surface Science

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Allophane, an earth-abundant and easy-to-be-synthesized hollow nanospherical material, readily loses its unique pore structure via irreversible aggregation of particles upon drying, which mainly results from capillary stress in the unsaturated inner cavity. To tackle this problem, we develop a strategy for tailoring the capillary stress and thus the aggregation state of allophane by introducing methyl moieties onto the inner surface during preparation. Combined spectroscopic results verified the formation of methyl-allophane with methyl groups only on its inner surface. The presence of a reflection at approximately 33 Å in the X-ray diffraction pattern, ascribed to the interference between particles, indicated an increased structural order in methyl-allophane. The thermal analysis data revealed a decrease of the inner-surface hydrophilcity. The Brunauer-Emmett-Teller (BET) specific surface area increased from 269 to 523 m 2 /g after methyl modification. An aggregation model, in contrast with that of allophane, was proposed based on the microscopic and small-angle X-ray scattering results to explain these observed changes. This work exhibited that substitution of silanol by methyl on the inner surface of allophane leads to improvement of structural order by eliminating the presence of oligomeric silicates and decreases the hydrophilicity, resulting in the reduction of the capillary stress in the inner cavity and thus the inhibition of irreversible aggregation of particles during drying. The insight into the mechanisms underneath the above mentioned changes upon methyl modification unraveled in this work is helpful for addressing the common aggregation issue of other nanomaterials.

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Section: Introductionmentioning

confidence: 99%

Tailoring structure and surface chemistry of hollow allophane nanospheres for optimization of aggregation by facile methyl modification

Thill

Yuan

et al. 2020

Applied Surface Science

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“…It is well-known that most of lanthanide(III) ions (not including La 3+ and Lu 3+ ions) can usually show fine photoluminescence performances and, in recent years, new lanthanide materials with interesting photoluminescence properties have drawn more and more attention from the researchers in chemical, physical, material and other domains. [1][2][3][4][5] As of today, a large number of researchers have been devoting themselves to the preparation, structures, physical and chemical characterization of new lanthanide materials, in order to explore their various potential applications in luminescent probes, cell imaging, catalysts, magnetic materials, electrochemical displays, sensors, light-emitting diodes, and so forth. [6][7][8][9][10][11][12] Relative to the large number of investigations on the photoluminescence behavior of new lanthanide materials, only very few investigations on the semiconductor properties of lanthanide materials have been explored so far and, therefore, more studies are still necessary.…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure and Photophysical Properties of a Novel Dy-Hg Isonicotinic Acid Compound with One-Dimensional Chain-Like Cations

Chen

2020

ACSi

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A novel Dy-Hg compound [Dy(HIA)3(H2O)2]2n · 2nHgCl4 · nHgCl5 · nH3O · 3nH2O (1; HIA = isonicotinic acid) was prepared through a hydrothermal reaction and characterized by X-ray diffraction. The compound crystallizes in the space group of C2/c of the monoclinic system. The crystal structure of compound 1 has one-dimensional (1-D) chain-like cations. A photoluminescence experiment with a solid-state sample revealed that this compound exhibits a yellow emission band at 575 nm and, this emission band shall come from the 4f electron 4F9/2 → 6H13/2 characteristic transfer of Dy3+ ions. The compound features CIE chromaticity coordinates of 0.5168 and 0.4824 in the yellow region. A UV-visible diffuse reflectance spectrum with a solid-state sample unveiled that this compound possesses a wide optical band gap of 3.39 eV.

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“…To date, scientists have accomplished a large number of studies on rare earth materials in order to reveal the practical applications of such materials in the field of light-emitting diodes (LEDs), magnets, electrochemical displays, luminescent probes, and so on. [10][11][12][13] In comparison with the many studies on the magnetic and photoluminescence performance of the rare earth materials, reports on the semiconductor performance of the rare earth materials are still rare and needs to be explored further.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of two lanthanide complexes with one-dimensional chain-like structures

Luo

Chen

2020

Journal of Chemical Research

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Two novel RE–Hg (RE = rare earth) complexes [RE(IA)3(H3O)2]2 n·2 n(HgCl4)· n(HgCl5)· nH2O·3 nH3O (RE = Y, 1; Lu, 2; IA = isonicotinic acid anion) were synthesized through hydrothermal reactions and are structurally characterized by single-crystal X-ray diffraction. The two complexes are isostructures and are characteristic of a one-dimensional chain-like structure. Both complexes are characterized by a three-dimensional supramolecular network. Photoluminescence experiments using solid-state samples show that they possess emission bands in the blue or red region. They have remarkable CIE chromaticity coordinates of (0.1172, 0.182) and (0.623, 0.3765), respectively. As a result, they are potential candidates for light-emitting materials for light-emitting diodes. They show wide optical band gaps of 3.29 eV and 2.89 eV, as revealed by the solid-state UV/Vis diffuse reflectance spectra.

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Double protected lanthanide fluorescence core@shell colloidal hybrid for the selective and sensitive detection of ClO−

Cited by 70 publications

References 44 publications

Tailoring structure and surface chemistry of hollow allophane nanospheres for optimization of aggregation by facile methyl modification

Tailoring structure and surface chemistry of hollow allophane nanospheres for optimization of aggregation by facile methyl modification

Crystal Structure and Photophysical Properties of a Novel Dy-Hg Isonicotinic Acid Compound with One-Dimensional Chain-Like Cations

Preparation and characterization of two lanthanide complexes with one-dimensional chain-like structures

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