The inner filter effect of Cr(<scp>vi</scp>) on Tb-doped layered rare earth hydroxychlorides: new fluorescent adsorbents for the simple detection of Cr(<scp>vi</scp>)

Kim, Hyunsub; Lee, Byung-Il; Byeon, Song‐Ho

doi:10.1039/c4cc08543d

Cited by 62 publications

(22 citation statements)

References 32 publications

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“…Layered rare-earth hydroxides (LRHs), a newly emerging class of layered materials structurally similar to LDHs, have aroused encouraging attention of researchers [10][11][12][13]. The combination of the rare-earth (RE) elements in the host layers and the exchangeable interlayer guests would generate multifunctional materials having important applications such as adsorbents, magnets, catalysis and luminescence [14][15][16][17]. However, practical application of the LRHs in optical devices is limited by the low emission intensity arising from the direct coordination of water molecules and hydroxyl groups to the layer RE centers.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Tb3+ luminescence in layered terbium hydroxide by intercalation of benzenepolycarboxylic species

Liu

Yang

et al. 2017

Materials Research Bulletin

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We herein demonstrate the intercalation of several organic benzenepolycarboxylic compounds, terephthalic acid (TC), 1,3,5-benzenetricarboxylic acid (BTC) and 1,2,4,5-benzenetetracarboxylic acid (BTCC), into the layered terbium hydroxide (LTbH) and the sensitized luminescence of these organic species for the layer Tb 3+. All of the as-prepared products demonstrated characteristic XRD diffractions attributed to layered materials. Compared with the NO 3-LTbH precursor, efficient energy transfer from intercalated organic anions to Tb 3+ centers in LTbH layers took place, thus markedly enhancing the Tb 3+ luminescence. The relationship between the triplet energy levels of the organic guests and the energy level of Tb 3+ was analyzed to explain the sensitization effect and energy transfer from the gallery sensitizers to the layer Tb 3+ ions. The fluorescence lifetimes of NO 3-LTbH, TC-LTbH, BTC-LTbH and BTCC-LTbH were determined to be 0.131, 0.315, 0.579 and 0.642 ms, respectively, indicating significantly increased lifetimes of the LTbH composites intercalated with the organic species.

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Section: Introductionmentioning

confidence: 99%

Enhanced Tb3+ luminescence in layered terbium hydroxide by intercalation of benzenepolycarboxylic species

Liu

Yang

et al. 2017

Materials Research Bulletin

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“…Hexavalent chromium [Cr(VI)] is regarded as hazardous due to its mutagenicity and carcinogenicity to living organisms, and its facile solubility in neutral water provides both mobility and bio‐accessibility . Recently, some chromium contamination incidents have attracted serious concerns.…”

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confidence: 99%

Microwave‐Assisted Rapid Synthesis of Amphibious Yellow Fluorescent Carbon Dots as a Colorimetric Nanosensor for Cr(VI)

Wang

Jiang

et al. 2015

Part & Part Syst Charact

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“…It can become concentrated throughout the food chain and accumulate in living tissues. When taken by the cells, it can easily permeate the cell membrane, and causes respiratory, immunological and developmental problems [1]. The concentration of Cr(VI) in drinking water is regulated to a low micromolar level [2].…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing

2020

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The sensing of chromium(VI) (Cr(VI)) is highly desired, due to its toxic and carcinogenic effects upon human health. Fluorescent probes, especially carbon nanodots (CNDs), have been widely used for Cr(VI) sensing via the inner filter effect (IFE). However, improving the sensitivity of these probes remains a difficult issue. In this work, CNDs derived from β-Lactoglobulin were applied as an ultrasensitive fluorescent probe for Cr(VI). With 260 nm excitation, the CNDs showed multi-band emission, including an ultraviolet 360 nm peak. The spectral matching of the CNDs with Cr(VI) led to synergistic suppression of both the excitation and emission light in the fluorescent sensing. As a consequence, the CNDs showed high sensitivity toward Cr(VI), the detection limit reaching as low as 20 nM. Moreover, taking advantage of the multi-emissive property of the CNDs, the synergistic effect was proven in an IFE-based sensing system, which might be extended to the design of other kinds of fluorescent probes.

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The inner filter effect of Cr(vi) on Tb-doped layered rare earth hydroxychlorides: new fluorescent adsorbents for the simple detection of Cr(vi)

Cited by 62 publications

References 32 publications

Enhanced Tb3+ luminescence in layered terbium hydroxide by intercalation of benzenepolycarboxylic species

Enhanced Tb3+ luminescence in layered terbium hydroxide by intercalation of benzenepolycarboxylic species

Microwave‐Assisted Rapid Synthesis of Amphibious Yellow Fluorescent Carbon Dots as a Colorimetric Nanosensor for Cr(VI)

Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing

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