51
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Xu L, Feng L, Han Y, Jing Y, Xian Z, Liu Z, Huang J, Yan Y. Supramolecular self-assembly enhanced europium(III) luminescence under visible light. SOFT MATTER 2014; 10:4686-4693. [PMID: 24839053 DOI: 10.1039/c4sm00335g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we report on the luminescence of europium by directly exciting europium ions with visible light in aqueous medium. Upon replacing all the water molecules that coordinate around a central europium ion with a ditopic ligand 1,11-bis(2,6-dicarboxypyridin-4-yloxy)-3,6,9-trioxaundecane (L2EO4), the quenching from water molecules is efficiently eliminated, offering considerable europium emission. By stoichiometrically mixing with a positively charged block polyelectrolyte, the negatively charged L2EO4-Eu coordinating complex can be transformed into a coordination 'polymer', which simultaneously forms electrostatic micelles with further enhanced europium fluorescence emission, owing to the increased fraction of L2EO4-coordinated Eu(III) as revealed by the fluorescence lifetime measurements. This approach avoids the use of the antenna effect that often utilizes UV light as the irradiation source. We further use those micelles for bio-imaging, and for the first time demonstrate the use of directly excited Eu-containing nano-probes for in vivo fluorescence imaging in small animals under visible excitation. Although literature results have shown that the direct excitation of europium ions in water may lead to emissions in the presence of coordinating ligands, those emissions were too weak to be applied due to the remaining water molecules in the coordination sphere. Our work points out that the direct excitation of europium can generate considerable europium emission given that all the water molecules in the coordination sphere are excluded, which does not only greatly reduce tedious lab work in synthesizing antenna molecules, but also facilitates the application of europium in aqueous medium under visible light.
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Affiliation(s)
- Limin Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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52
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Peterson KL, Dang JV, Weitz EA, Lewandowski C, Pierre VC. Effect of lanthanide complex structure on cell viability and association. Inorg Chem 2014; 53:6013-21. [PMID: 24901440 PMCID: PMC4060611 DOI: 10.1021/ic500282n] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A systematic study of the effect of hydrophobicity and charge on the cell viability and cell association of lanthanide metal complexes is presented. The terbium luminescent probes feature a macrocyclic polyaminocarboxylate ligand (DOTA) in which the hydrophobicity of the antenna and that of the carboxyamide pendant arms are independently varied. Three sensitizing antennas were investigated in terms of their function in vitro: 2-methoxyisophthalamide (IAM(OMe)), 2-hydroxyisophthalamide (IAM), and 6-methylphenanthridine (Phen). Of these complexes, Tb-DOTA-IAM exhibited the highest quantum yield, although the higher cell viability and more facile synthesis of the structurally related Tb-DOTA-IAM(OMe) platform renders it more attractive. Further modification of this latter core structure with carboxyamide arms featuring hydrophobic benzyl, hexyl, and trifluoro groups as well as hydrophilic amino acid based moieties generated a family of complexes that exhibit high cell viability (ED50 > 300 μM) regardless of the lipophilicity or the overall complex charge. Only the hexyl-substituted complex reduced cell viability to 60% in the presence of 100 μM complex. Additionally, cellular association was investigated by ICP-MS and fluorescence microscopy. Surprisingly, the hydrophobic moieties did not increase cell association in comparison to the hydrophilic amino acid derivatives. It is thus postulated that the hydrophilic nature of the 2-methoxyisophthalamide antenna (IAM(OMe)) disfavors the cellular association of these complexes. As such, responsive luminescent probes based on this scaffold would be appropriate for the detection of extracellular species.
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Affiliation(s)
- Katie L Peterson
- Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
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53
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Cho ES, Yokoyama T, Ertem E, Stellacci F. Change of Luminescence Properties of Europium Ions Captured by Mixed-Ligand Silver Nanoparticles. Isr J Chem 2014. [DOI: 10.1002/ijch.201400069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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54
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Affiliation(s)
- Marie C. Heffern
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Lauren M. Matosziuk
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Thomas J. Meade
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
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55
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Kotova O, Kitchen JA, Lincheneau C, Peacock RD, Gunnlaugsson T. Probing the effects of ligand isomerism in chiral luminescent lanthanide supramolecular self-assemblies: a europium "Trinity Sliotar" study. Chemistry 2013; 19:16181-6. [PMID: 24174126 DOI: 10.1002/chem.201303660] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Indexed: 01/08/2023]
Abstract
"Trinity Sliotar" family: Chiral ligands containing pyridyl and naphthalene moieties were synthesized and characterized. These ligands were successfully used for the synthesis of Eu(III) bundles where chirality of the ligand is successfully transferred onto the lanthanide centre resulting in circularly polarized red luminescence.
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Affiliation(s)
- Oxana Kotova
- School of Chemistry, Trinity Biomedical Sciences Institute, University of Dublin, Trinity College Dublin, Dublin 2 (Ireland).
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56
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Chandrasekhar V, Das S, Dey A, Hossain S, Sutter JP. Tetranuclear Lanthanide (III) Complexes Containing Dimeric Subunits: Single-Molecule Magnet Behavior for the Dy4 Analogue. Inorg Chem 2013; 52:11956-65. [DOI: 10.1021/ic401652f] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Vadapalli Chandrasekhar
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
- Centre for Interdisciplinary
Sciences, Tata Institute of Fundamental Research, 21 Brundavan Colony, Narsingi, Hyderabad 500075, India
| | - Sourav Das
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Atanu Dey
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sakiat Hossain
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jean-Pascal Sutter
- Laboratoire de Chimie
de Coordination (LCC), CNRS, 205, route de Narbonne, F-31077 Toulouse, France
- UPS, INPT,
LCC, Université de Toulouse, F-31077 Toulouse, France
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57
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Sun L, Qiu Y, Liu T, Zhang JZ, Dang S, Feng J, Wang Z, Zhang H, Shi L. Near infrared and visible luminescence from xerogels covalently grafted with lanthanide [Sm(3+), Yb(3+), Nd(3+), Er(3+), Pr(3+), Ho(3+)] β-diketonate derivatives using visible light excitation. ACS APPLIED MATERIALS & INTERFACES 2013; 5:9585-9593. [PMID: 24063535 DOI: 10.1021/am402529w] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A series of ternary lanthanide β-diketonate derivatives covalently bonded to xerogels (named as Ln-DP-xerogel, Ln = Sm, Yb, Nd, Er, Pr, Ho) by doubly functionalized alkoxysilane (dbm-Si) was synthesized in situ via a sol-gel process. The properties of these xerogel materials were investigated by Fourier-transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), diffuse reflectance (DR) spectroscopy, thermogravimetric analyses, and fluorescence spectroscopy. The data and analyses suggest that the lanthanide derivatives have been covalently grafted to the corresponding xerogels successfully. Of importance here is that, after excitation with visible light (400-410 nm), the xerogels all show characteristic visible (Sm(3+)) as well as near-infrared (NIR; Sm(3+), Yb(3+), Nd(3+), Er(3+), Pr(3+), Ho(3+)) luminescence of the corresponding Ln(3+) ions, which is attributed to the energy transfer from the ligands to the Ln(3+) ions via an antenna effect. Exciting with visible light is advantageous over UV excitation. Furthermore, to the best of our knowledge, it is the first observation of NIR luminescence with visible light excitation from xerogels covalently bonded with the Sm(3+), Pr(3+), and Ho(3+) derivatives. Compared to lanthanide complexes (Ln = Er, Nd, Yb) functionalized periodic mesoporous organosilica (PMO) materials that exhibit similar optical properties reported in our previous work, the Ln-DP-xerogel (Ln = Sm, Yb, Nd, Er, Pr, Ho) in this case offer advantages in terms of ease of synthesis and handling and potentially low cost for emerging technological applications. Development of near-infrared luminescence of the lanthanide materials with visible light excitation is of strong interest to emerging applications such as chemosensors, laser systems, and optical amplifiers.
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Affiliation(s)
- Lining Sun
- Research Center of Nano Science and Technology, Shanghai University , Shanghai, Shanghai 200444, P. R. China
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58
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Peterson KL, Margherio MJ, Doan P, Wilke KT, Pierre VC. Basis for sensitive and selective time-delayed luminescence detection of hydroxyl radical by lanthanide complexes. Inorg Chem 2013; 52:9390-8. [PMID: 23889495 DOI: 10.1021/ic4009569] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular probes for the detection of hydroxyl radical (HO•) by time-delayed luminescence spectroscopy directly in water at neutral pH with high sensitivity and selectivity are presented. The bimolecular probes consist of a lanthanide complex with open coordination sites and a reactive pre-antenna composed of an aromatic acid or amide; the latter binds to and sensitizes terbium emission upon hydroxylation by HO•. These probes exhibit long luminescence lifetimes compatible with time-delayed measurements that remove interfering background fluorescence from the sample. Six different reactive pre-antenna (benzoate, benzamide, isophthalate, isophthalamide, trimesate, and trimesamide) and two different terbium complexes [Tb-(1,4,7,10-tetraazacyclododecane-1,4,7-tris(acetic acid)) (Tb-DO3A) and Tb-(1,4,7,10-tetraazacyclododecane-1,7-bis(acetic acid)) (Tb-DO2A)] were evaluated. Of these the trimesamide/Tb-DO3A system enables the most sensitive detection of HO• with an about 1000-fold increase in metal-centered time-delayed emission upon hydroxylation of the pre-antenna to 2-hydroxytrimesamide. Excellent selectivity for both the trimesamide/Tb-DO3A and trimesate/Tb-DO3A systems over other reactive oxygen and nitrogen species are observed. Notably, the increase in metal-centered luminescence intensity is not associated with a decrease in the hydration number (q) of Tb-DO3A, suggesting that the antenna is interacting with the lanthanide via a second sphere coordination environment or that coordination by the antenna occurs by displacement of one or more of the carboxylate arms of DO3A. Formation of a weak ternary complex Tb-DO3A•hydroxytrimesamide was confirmed by temperature-dependent titration and a decrease in K(app) with increasing temperature.
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Affiliation(s)
- Katie L Peterson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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59
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Chandrasekhar V, Bag P, Colacio E. Octanuclear {Ln(III)8}(Ln = Gd, Tb, Dy, Ho) Macrocyclic Complexes in a Cyclooctadiene-like Conformation: Manifestation of Slow Relaxation of Magnetization in the Dy(III) Derivative. Inorg Chem 2013; 52:4562-70. [DOI: 10.1021/ic400091j] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Vadapalli Chandrasekhar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
- Tata Institute of Fundamental Research, Centre for Interdisciplinary Sciences, 21
Brundavan Colony, Narsingi, Hyderabad-500075, India
| | - Prasenjit Bag
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Enrique Colacio
- Departamento de Química Inorgánica,
Facultad de Ciencias, Universidad de Granada, Avenida de Fuentenueva s/n, 18071 Granada, Spain
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60
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Lewis DJ, Moretta F, Holloway AT, Pikramenou Z. Evaluation of quinoline as a remote sensitiser for red and near-infrared emissive lanthanide(III) ions in solution and the solid state. Dalton Trans 2013; 41:13138-46. [PMID: 23007687 DOI: 10.1039/c2dt31106b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In order to evaluate quinoline as a remote sensitiser, we have prepared a DTPA based ligand, H3L, bearing quinoline bisamide arms for the complexation of a range of lanthanide(III) ions to give the neutral complexes LnLwhere Ln(3+) = Y(3+), Eu(3+), Sm(3+), Tb(3+), Er(3+), Yb(3+), Nd(3+), Gd(3+). Detection of the phosphorescence signal exhibited by the GdLcomplex at 77 K confirmed that the triplet energy level of the sensitiser at 21,190 cm(-1) was suitable for the indirect population of a range of lanthanide luminescent states. A full photophysical analysis of the complexes reveals that SmL and EuL display red emission when excited through the ligand-based absorption band centred at 330 nm, extending the excitation to violet light around 370 nm. We demonstrate that quinoline sensitizes near-infrared emission in the YbL, ErL and NdL complexes, in powder form as well as in solution. Most importantly, the luminescence for YbL and NdL was sufficiently efficient to be detected in non-deuterated solvent.
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Affiliation(s)
- David J Lewis
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, UK
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61
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Wartenberg N, Raccurt O, Bourgeat‐Lami E, Imbert D, Mazzanti M. Multicolour Optical Coding from a Series of Luminescent Lanthanide Complexes with a Unique Antenna. Chemistry 2013; 19:3477-82. [DOI: 10.1002/chem.201203657] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 11/26/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Nicolas Wartenberg
- Département Laboratoire de Chimie et de Sécurité des Matériaux (DTNM/LITEN/DRT), CEA‐Grenoble (France)
| | - Olivier Raccurt
- Département Laboratoire de Chimie et de Sécurité des Matériaux (DTNM/LITEN/DRT), CEA‐Grenoble (France)
- Solar Technologies Department, Thermal Systems Laboratory, National Institute of Solar Energy INES, CEA LITEN, 73377 Le Bourget‐du‐Lac (France)
| | - Elodie Bourgeat‐Lami
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (C2P2), LCPP Group, CPE Lyon, CNRS UMR5265, Université de Lyon, Univ. Lyon 1, 43 Bd. du 11 Novembre 1918, 69616 Villeurbanne (France)
| | - Daniel Imbert
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique (UMR E‐3 CEA/UJF), CEA‐Grenoble, INAC, 17 rue des Martyrs, 38054 Grenoble cedex 9 (France), Fax: (+33) 0438‐785‐090
| | - Marinella Mazzanti
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique (UMR E‐3 CEA/UJF), CEA‐Grenoble, INAC, 17 rue des Martyrs, 38054 Grenoble cedex 9 (France), Fax: (+33) 0438‐785‐090
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62
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Sun L, Qiu Y, Liu T, Peng H, Deng W, Wang Z, Shi L. Visible-light sensitized sol–gel-based lanthanide complexes (Sm, Yb, Nd, Er, Pr, Ho, Tm): microstructure, photoluminescence study, and thermostability. RSC Adv 2013. [DOI: 10.1039/c3ra45202f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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63
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Xu L, Jing Y, Feng L, Xian Z, Yan Y, Liu Z, Huang J. The advantage of reversible coordination polymers in producing visible light sensitized Eu(iii) emissions over EDTA via excluding water from the coordination sphere. Phys Chem Chem Phys 2013; 15:16641-7. [DOI: 10.1039/c3cp52776j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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64
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Zeng CH, Zhao FL, Yang YY, Xie MY, Ding XM, Hou DJ, Ng SW. Unusual method for phenolic hydroxyl bridged lanthanide CPs: Syntheses, characterization, one and two photon luminescence. Dalton Trans 2013. [DOI: 10.1039/c2dt32233a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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65
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Mei X, Wang X, Wang J, Ma Y, Li L, Liao D. Dinuclear lanthanide complexes bridged by nitronyl nitroxide radical ligands with 2-phenolate groups: structure and magnetic properties. NEW J CHEM 2013. [DOI: 10.1039/c3nj00739a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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66
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Xu HB, Deng JG, Kang B. Designed synthesis and photophysical properties of multifunctional hybrid lanthanide complexes. RSC Adv 2013. [DOI: 10.1039/c3ra40513c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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67
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Chandrasekhar V, Bag P, Murugesapandian B, Pandey MD. A phosphorus-based compartmental ligand, (S)P[N(Me)NCH–C6H3-2-O-3-OMe]3 (LH3), enables the assembly of luminescent heterobimetallic linear {L2Zn2Ln}+ [Ln = Gd, Tb, Nd and Eu] complexes. Dalton Trans 2013; 42:15447-56. [DOI: 10.1039/c3dt51431e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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