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Journal articles on the topic 'Lanthanides, Luminescence, CPL'

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Author: Grafiati
Published: 11 March 2023

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1

Yao, Zhiwei, Yanyan Zhou, Ting Gao, Pengfei Yan, and Hongfeng Li. "Ancillary ligand modulated stereoselective self-assembly of triple-stranded Eu(iii) helicate featuring circularly polarized luminescence." RSC Advances 11, no. 18 (2021): 10524–31. http://dx.doi.org/10.1039/d1ra01583d.

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Chiral ancillary ligands (R/S-BINAPO) modulated the stereoselective self-assembly of lanthanide helicates, which presented strong CPL with |glum| values up to 0.112 and high luminescence quantum yield up to 34%.
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2

Bradberry, Samuel J., Aramballi Jayant Savyasachi, Robert D. Peacock, and Thorfinnur Gunnlaugsson. "Quantifying the formation of chiral luminescent lanthanide assemblies in an aqueous medium through chiroptical spectroscopy and generation of luminescent hydrogels." Faraday Discussions 185 (2015): 413–31. http://dx.doi.org/10.1039/c5fd00105f.

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Herein we present the synthesis and the photophysical evaluation of water-soluble chiral ligands (2·(R,R) and 2·(S,S)) and their application in the formation of lanthanide directed self-assembled structures. These pyridine-2,6-dicarboxylic amide based ligands, possessing two naphthalene moieties as sensitising antennae, that can be used to populate the excited state of lanthanide ions, were structurally modified using 3-propanesultone and caesium carbonate, allowing for the incorporation of a water-solubilising sulfonate motif. We show, using microwave synthesis, that Eu(iii) forms chiral complexes in 1 : 3 (M : L) stoichiometries (Eu·[2·(R,R)]3 and Eu·[2·(S,S)]3) with these ligands, and that the red Eu(iii)-centred emission arising from these complexes has quantum yields (Φtot) of 12% in water. Both circular dichroism (CD) and circular polarised luminescence (CPL) analysis show that the complexes are chiral; giving rise to characteristic CD and CPL signatures for both the Λ and the Δ complexes, which both possess characteristic luminescence dissymmetry factors (glum), describing the structure in solution. The self-assembly process was also monitored in situ by observing the changes in the ligand absorption and fluorescence emission, as well as in the Eu(iii) luminescence. The change, fitted using non-linear regression analysis, demonstrated high binding affinity for Eu(iii) which in part can be assigned to being driven by additional hydrophobic effects. Moreover, using CD spectroscopy, the changes in the chiroptical properties of both (2·(R,R) and 2·(S,S)) were monitored in real time. Fitting the changes in the CD spectra allowed for the step-wise binding constants to be determined for these assemblies; these matched well with those determined from both the ground and the excited state changes. Both the ligands and the Eu(iii) complexes were then used in the formation of hydrogels; the Eu(iii)-metallogels were luminescent to the naked-eye.
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3

Barry, Dawn E., Jonathan A. Kitchen, Laszlo Mercs, Robert D. Peacock, Martin Albrecht, and Thorfinnur Gunnlaugsson. "Chiral luminescent lanthanide complexes possessing strong (samarium, SmIII) circularly polarised luminescence (CPL), and their self-assembly into Langmuir–Blodgett films." Dalton Transactions 48, no. 30 (2019): 11317–25. http://dx.doi.org/10.1039/c9dt02003a.

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The lanthanide directed self-assembly of chiral amphiphilic pda based ligands 1 and 2 with TbIII, SmIII, LuIII and DyIII salts was studied in CH3CN solution and as SAM LB-films.
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4

Yang, Dong-Dong, Li-Ping Lu, and Miao-Li Zhu. "A new family of lanthanide coordination polymers based on 3,3′-[(5-carboxylato-1,3-phenylene)bis(oxy)]dibenzoate: synthesis, crystal structures and magnetic and luminescence properties." Acta Crystallographica Section C Structural Chemistry 76, no. 8 (July 21, 2020): 763–70. http://dx.doi.org/10.1107/s2053229620009547.

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Six two-dimensional (2D) coordination polymers (CPs), namely, poly[{μ5-3,3-[(5-carboxylato-1,3-phenylene)bis(oxy)]dibenzoato-κ6 O 1:O 1′:O 3,O 3′:O 5:O 5′}bis(N,N-dimethylformamide-κO)lanthanide(III)], [Ln(C21H11O8)(C3H7NO)2] n , with lanthanide/Ln = cerium/Ce for CP1, praseodymium/Pr for CP2, neodymium/Nd for CP3, samarium/Sm for CP4, europium/Eu for CP5 and gadolinium/Gd for CP6, have been prepared by solvothermal methods using the ligand 3,3′-[(5-carboxy-1,3-phenylene)bis(oxy)]dibenzoic acid (H3cpboda) in the presence of Ln(NO3)3. The complexes were characterized by single-crystal X-ray and powder diffraction, IR spectroscopy, elemental analysis and thermogravimetric analysis (TGA). All the structures of this family of lanthanide CPs are isomorphous with the triclinic space group P-1 and reveal that they have the same 2D network based on binuclear LnIII units, which are further extended via interlayer C—H...π interactions into a three-dimensional supramolecular structure. The carboxylate groups of the cpboda3− ligands link adjacent LnIII ions and form binuclear [Ln2(RCOO)4] secondary building units (SBUs), in which each binuclear LnIII SBU contains four carboxylate groups from different cpboda3− ligands. Moreover, with the increase of the rare-earth Ln atomic radius, the dihedral angles between the aromatic rings gradually increase. Magnetically, CP6 shows weak antiferromagnetic coupling between the GdIII ions. The solid-state luminescence properties of CP2, CP5 and CP6 were examined at ambient temperature and CP5 exhibits characteristic red emission bands derived from the Eu3+ ion (CIE 0.53, 0.31), with luminescence quantum yields of 22%. Therefore, CP5 should be regarded as a potential optical material.
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5

Xie, Juan, Hui-Ming Shu, Huai-Ming Hu, Zhong-Xi Han, Sa-Sa Shen, Fei Yuan, Meng-Lin Yang, Fa-Xin Dong, and Gang-Lin Xue. "Syntheses, Structures, and Luminescence Properties of Lanthanide Coordination Polymers with a Polycarboxylic Terpyridyl Derivative Ligand." ChemPlusChem 79, no. 7 (April 9, 2014): 985–94. http://dx.doi.org/10.1002/cplu.201402030.

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6

Balamurugan, Ayyakkalai, Arvind Kumar Gupta, Ramamoorthy Boomishankar, Mundlapudi Lakshmipathi Reddy, and Manickam Jayakannan. "Heavy Atom Effect Driven Organic Phosphors and Their Luminescent Lanthanide Metal-Organic Frameworks." ChemPlusChem 78, no. 7 (June 11, 2013): 737–45. http://dx.doi.org/10.1002/cplu.201300121.

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7

Qin, Tao, Zhe Feng, Jie Yang, Xuan Shen, and Dunru Zhu. "Unprecedented three-dimensional hydrogen-bonded hex topological chiral lanthanide–organic frameworks built from an achiral ligand." Acta Crystallographica Section C Structural Chemistry 74, no. 11 (October 17, 2018): 1403–12. http://dx.doi.org/10.1107/s205322961801313x.

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The design and preparation of chiral metal–organic frameworks (CMOFs) from achiral ligands are a big challenge. Using 3-nitro-4-(pyridin-4-yl)benzoic acid (HL) as a new linker, a total of eight chiral lanthanide–organic frameworks (LOFs), namely poly[diaquatris[μ2-3-nitro-4-(pyridin-4-yl)benzoato-κ2 O:O′]lanthanide(III)], L- and D-[Ln(C12H7N2O4)3(H2O)2] n [(1), Ln = Eu; (2), Ln = Gd; (3), Ln = Dy; (4), Ln = Tb], were hydrothermally synthesized without chiral reagents and determined by X-ray crystallography. Crystal structure analyses show that L-(1)–(4) crystallize in the hexagonal P65 space group and are isomorphous and isostructural, while the enantiomers D-(1)–(4) crystallize in the hexagonal P61 space group. All LnIII ions are octacoordinated by six carboxyl O atoms of six 3-nitro-4-(pyridin-4-yl)benzoate ligands and two water molecules in a dodecahedral geometry. A one-dimensional neutral helical [Ln2(CO2)3] n chain is observed in (1)–(4) as a chiral origin. These helical chains are further interconnected via directional hydrogen-bonding interactions between pyridyl groups and water molecules to construct a three-dimensional (3D) homochiral network with hex topology. The present CMOF structure is the first chiral 3D hydrogen-bonded hex-net and shows good water stability. Solid-state circular dichroism (CD) signals revealed that (1)–(4) crystallized through spontaneous resolution. Furthermore, (1) and (4) display a strong red and green photoluminescence at room temperature, respectively, but their intensities reduce to almost half at 200 °C. Notably, upon excitation under visible light (463 nm), a circularly polarized luminescence (CPL) of (1) in the solid state is observed for the first time, with a g lum value of 2.61 × 10−2.
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8

Muller, Gilles, and James P. Riehl. "Use of Induced Circularly Polarized Luminescence (CPL) from Racemic D3 Lanthanide Complexes to Determine the Absolute Configuration of Amino Acids." Journal of Fluorescence 15, no. 4 (July 2005): 553–58. http://dx.doi.org/10.1007/s10895-005-2828-4.

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9

Hanaoka, Kenjiro. "Development of Responsive Lanthanide-Based Magnetic Resonance Imaging and Luminescent Probes for Biological Applications." CHEMICAL & PHARMACEUTICAL BULLETIN 58, no. 10 (2010): 1283–94. http://dx.doi.org/10.1248/cpb.58.1283.

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10

Hao, Hongguo, Hongyan Liu, Yuchen Wang, Suxian Yuan, Han Xu, Jingyue Zhang, Ying Wang, Dacheng Li, and Junshan Sun. "A series of two-dimensional lanthanide coordination polymers: synthesis, structures, magnetism and selective luminescence detection for heavy metal ions and toxic solvents." Acta Crystallographica Section C Structural Chemistry 75, no. 2 (January 31, 2019): 221–30. http://dx.doi.org/10.1107/s2053229618016972.

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A series of two-dimensional (2D) coordination polymers (CPs), namely poly[[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)digadolinium(III)] N,N-dimethylacetamide monosolvate], {[Gd2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2]·C4H9NO} n (CP1), poly[[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)didysprosium(III)] N,N-dimethylacetamide monosolvate], {[Dy2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2]·C4H9NO} n (CP2), poly[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)dineodymium(III)], [Nd2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2] n (CP3), poly[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)disamarium(III)], [Sm2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2] n (CP4), has been synthesized from rigid biphenyl-3,3′,5,5′-tetracarboxylic acid under solvothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses, elemental analyses, IR spectra, powder X-ray diffraction and thermogravimetric analyses, and CP1–CP4 crystallize in the monoclinic space group P21/n. CP1–CP4 are isomorphous and feature similar 2D double layers, which are further extended via interlayer hydrogen-bonding interactions into a three-dimensional (3D) supramolecular structure. Hydrogen-bonding interactions between N,N-dimethylacetamide molecules and carboxylate O atoms strengthen the packing of the layers. The organic ligands interconnect with metal ions to generate 2D layered structures with a (4,4)-connected net having {44.62} topology. CP1 has been investigated for its magnetic properties and magnetic susceptibility measurements were carried out in the range 2.0–300 K. The results of the magnetic measurements show weak antiferromagnetic coupling between the GdIII ions in CP1. Moreover, the strong luminescence of CP2 and CP4 can be selectively quenched by the Fe3+ ion and toxic solvents (e.g. acetone).
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11

Nybro Dansholm, Charlotte, Anne Kathrine R. Junker, Lea G. Nielsen, Nicolaj Kofod, Robert Pal, and Thomas Just Sørensen. "π‐Expanded Thioxanthones—Engineering the Triplet Level of Thioxanthone Sensitizers for Lanthanide‐Based Luminescent Probes with Visible Excitation." ChemPlusChem 84, no. 12 (October 16, 2019): 1777. http://dx.doi.org/10.1002/cplu.201900583.

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12

Dansholm, Charlotte Nybro, Anne Kathrine R. Junker, Lea G. Nielsen, Nicolaj Kofod, Robert Pal, and Thomas Just Sørensen. "π‐Expanded Thioxanthones – Engineering the Triplet Level of Thioxanthone Sensitizers for Lanthanide‐Based Luminescent Probes with Visible Excitation." ChemPlusChem 84, no. 12 (July 8, 2019): 1778–88. http://dx.doi.org/10.1002/cplu.201900309.

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13

Dansholm, Charlotte Nybro, Anne Kathrine R. Junker, Lea G. Nielsen, Nicolaj Kofod, Robert Pal, and Thomas Just Sørensen. "Front Cover: π‐Expanded Thioxanthones – Engineering the Triplet Level of Thioxanthone Sensitizers for Lanthanide‐Based Luminescent Probes with Visible Excitation (ChemPlusChem 12/2019)." ChemPlusChem 84, no. 12 (October 15, 2019): 1775. http://dx.doi.org/10.1002/cplu.201900565.

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14

Zhou, Zhong-Yuan, Yun-Hu Han, Xiu-Shuang Xing, and Shao-Wu Du. "Microporous Lanthanide Metal-Organic Frameworks with Multiple 1D Channels: Tunable Colors, White-Light Emission, and Luminescent Sensing for Iron(II) and Iron(III)." ChemPlusChem 81, no. 8 (May 24, 2016): 798–803. http://dx.doi.org/10.1002/cplu.201600141.

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15

Wu, Tao. "Raman Optical Activity Spectrometer Can Sensitively Detect Lanthanide Circularly Polarized Luminescence." Physical Chemistry Chemical Physics, 2022. http://dx.doi.org/10.1039/d2cp01641a.

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Recently, many studies appreared where the Raman optical activity (ROA) instrument was found convenient also for measurement of circularly polarized luminescence (CPL). Typically, a weak lanthanide luminescence including the circular...
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16

Martinez, Alexandre, Lorenzo Arrico, costanza benetti, Lorenzo Di Bari, Oriane Della-Negra, Estelle Godart, Jean-Pierre Dutasta, et al. "Circularly Polarized Luminescence of Encaged Eu(III) and Tb(III) Complexes Controlled by an Inherently Chiral Remote Unit." New Journal of Chemistry, 2022. http://dx.doi.org/10.1039/d2nj02360a.

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A molecular cage-based approach to obtain enantiopure lanthanide complexes with circular polarized luminescence (CPL) activities is presented. Hemicryptophane endohedral complexes were designed by functionalizing the molecular cage with pyridine-2,6-dipicolinamide coordinating...
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17

Kitagawa, Yuichi, Takuma Nakai, Shota Hosoya, Sunao Shoji, and Yasuchika Hasegawa. "Luminescent Lanthanide Complexes for Effective Oxygen‐Sensing and Singlet Oxygen Generation." ChemPlusChem, February 9, 2023. http://dx.doi.org/10.1002/cplu.202200445.

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