1
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Ludwig P, Mayer J, Ahrens L, Rominger F, Ligorio G, Hermerschmidt F, List-Kratochvil EJW, Freudenberg J, Bunz UHF. Doubly Bridged Anthracenes: Blue Emitters for OLEDs. Chemistry 2024; 30:e202303037. [PMID: 37916673 DOI: 10.1002/chem.202303037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/03/2023]
Abstract
The photooxidative stability of a series of doubly bridged anthracenes was evaluated after their preparation via twofold macrocyclization of a bis(resorcinyl)anthracene. Lightfastness correlates with the energy levels of the highest occupied molecular orbital (HOMO), resulting in superior stability of the tetraesters compared to the tetraethers. The lengths and steric demand of the linker only plays a minor role for the ester-based compounds, which can be prepared in reasonable yields and thus tested in proof-of-concept organic light-emitting diodes. Double ester-bridging allows deep blue electro-luminescence, highlighting the importance of the choice of the functional groups used for macrocyclization.
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Affiliation(s)
- Philipp Ludwig
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jacob Mayer
- Institut für Physik, Institut für Chemie, IRIS-Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 2, 12489, Berlin, Germany
| | - Lukas Ahrens
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Giovanni Ligorio
- Institut für Physik, Institut für Chemie, IRIS-Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 2, 12489, Berlin, Germany
| | - Felix Hermerschmidt
- Institut für Physik, Institut für Chemie, IRIS-Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 2, 12489, Berlin, Germany
| | - Emil J W List-Kratochvil
- Institut für Physik, Institut für Chemie, IRIS-Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 2, 12489, Berlin, Germany
- Helmholtz Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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2
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Nathusius M, Sleeman D, Pan J, Rominger F, Freudenberg J, Bunz UHF, Müllen K. Kinetic Stabilization of Blue-Emissive Anthracenes: Phenylene Bridging Works Best. Chemistry 2021; 27:16606-16610. [PMID: 34519387 PMCID: PMC9293334 DOI: 10.1002/chem.202103285] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Indexed: 11/12/2022]
Abstract
In attempts at kinetically stabilizing blue‐emissive anthracenes, a series of 9,10‐diaryl substituted derivatives were tested for their photochemical and photooxidative persistence. A major breakthrough in light fastness comes from a new bis‐meta‐terphenylyl substituted anthracene which is much superior to industrially relevant 9,10‐biarylated anthracenes. The key issue is the steric shielding of the anthracene core. Further, intramolecular ring closure via Yamamoto coupling furnished a doubly bridged anthracene as a “self‐encapsulated” sky‐blue emitter which is most resistant to photodegradation. The improved stabilization was corroborated by time‐resolved irradiation experiments and rationalized by X‐ray crystallography.
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Affiliation(s)
- Marvin Nathusius
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.,InnovationLab, Speyerer Str. 4, 69115, Heidelberg, Germany.,Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Daniel Sleeman
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Junyou Pan
- Brilliant Optoelectronic Technology Co., Ltd., Yongda Rd. 148, 318020, Taizhou, Zhejiang, P. R. China
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.,InnovationLab, Speyerer Str. 4, 69115, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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3
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Ihde MH, Steelman AM, Bonizzoni M. Fluorescent Probes for the Supramolecular Interactions responsible for Binding of Polycyclic Aromatic Hydrocarbons to Hyperbranched Polyelectrolytes in Aqueous Media. Isr J Chem 2021. [DOI: 10.1002/ijch.202000097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael H. Ihde
- Department of Chemistry and Biochemistry The University of Alabama P.O. Box 870336 Tuscaloosa, AL 35487 United States
| | - Ashley M. Steelman
- Department of Chemistry and Biochemistry The University of Alabama P.O. Box 870336 Tuscaloosa, AL 35487 United States
- Department of Chemistry University of Kentucky Lexington KY 40506 United States
| | - Marco Bonizzoni
- Department of Chemistry and Biochemistry The University of Alabama P.O. Box 870336 Tuscaloosa, AL 35487 United States
- The Alabama Water Institute P.O. Box 870206 Tuscaloosa, AL 35487 United States
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4
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Limones-Herrero D, Palumbo F, Vendrell-Criado V, Andreu I, Lence E, González-Bello C, Miranda MA, Jiménez MC. Investigation of metabolite-protein interactions by transient absorption spectroscopy and in silico methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117652. [PMID: 31654902 DOI: 10.1016/j.saa.2019.117652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/23/2019] [Accepted: 10/10/2019] [Indexed: 06/10/2023]
Abstract
Transient absorption spectroscopy in combination with in silico methods has been employed to study the interactions between human serum albumin (HSA) and the anti-psychotic agent chlorpromazine (CPZ) as well as its two demethylated metabolites (MCPZ and DCPZ). Thus, solutions containing CPZ, MCPZ or DCPZ and HSA (molar ligand:protein ratios between 1:0 and 1:3) were submitted to laser flash photolysis and the ΔAmax value at λ = 470 nm, corresponding to the triplet excited state, was monitored. In all cases, the protein-bound ligand exhibited higher ΔAmax values measured after the laser pulse and were also considerably longer-lived than the non-complexed forms. This is in agreement with an enhanced hydrophilicity of the metabolites, due to the replacement of methyl groups with H that led to a lower extent of protein binding. For the three compounds, laser flash photolysis displacement experiments using warfarin or ibuprofen indicated Sudlow site I as the main binding site. Docking and molecular dynamics simulation studies revealed that the binding mode of the two demethylated ligands with HSA would be remarkable different from CPZ, specially for DCPZ, which appears to come from the different ability of their terminal ammonium groups to stablish hydrogen bonding interactions with the negatively charged residues within the protein pocket (Glu153, Glu292) as well as to allocate the methyl groups in an apolar environment. DCPZ would be rotated 180° in relation to CPZ locating the aromatic ring away from the Sudlow site I of HSA.
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Affiliation(s)
- Daniel Limones-Herrero
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Fabrizio Palumbo
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Victoria Vendrell-Criado
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Inmaculada Andreu
- Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Emilio Lence
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, 15782, Santiago de Compostela, Spain
| | - Concepción González-Bello
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, 15782, Santiago de Compostela, Spain
| | - Miguel A Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain; Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - M Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain; Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain.
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5
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Thirumoorthi R, Chandrasekhar V. Fluorophore-tagged organotellurium and –antimony assemblies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Kundu P, Chattopadhyay N. Unraveling the binding interaction of a bioactive pyrazole-based probe with serum proteins: Relative concentration dependent 1:1 and 2:1 probe-protein stoichiometries. Biophys Chem 2018; 240:70-81. [DOI: 10.1016/j.bpc.2018.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 05/31/2018] [Accepted: 06/02/2018] [Indexed: 11/17/2022]
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7
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Kim K, Min M, Hong S. Efficient Synthesis of Anthraquinones from Diaryl Carboxylic Acids via Palladium(II)-Catalyzed and Visible Light-Mediated Transformations. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201601057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kiho Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology; Daejeon 305-701 Korea
- Center for Catalytic Hydrocarbon Functionalization; Institute for Basic Science (IBS); Daejeon 305-701 Korea
| | - Minsik Min
- Center for Catalytic Hydrocarbon Functionalization; Institute for Basic Science (IBS); Daejeon 305-701 Korea
| | - Sungwoo Hong
- Center for Catalytic Hydrocarbon Functionalization; Institute for Basic Science (IBS); Daejeon 305-701 Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology; Daejeon 305-701 Korea
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8
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Aparici-Espert I, Francés-Monerris A, Rodríguez-Muñiz GM, Roca-Sanjuán D, Lhiaubet-Vallet V, Miranda MA. A Combined Experimental and Theoretical Approach to the Photogeneration of 5,6-Dihydropyrimidin-5-yl Radicals in Nonaqueous Media. J Org Chem 2016; 81:4031-8. [DOI: 10.1021/acs.joc.6b00314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel Aparici-Espert
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
| | | | - Gemma M. Rodríguez-Muñiz
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
| | - Daniel Roca-Sanjuán
- Instituto
de Ciencia Molecular, Universitat de València, P.O. Box 22085, 46071 València, Spain
| | - Virginie Lhiaubet-Vallet
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
| | - Miguel A. Miranda
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
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9
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Zhao H, Sen S, Udayabhaskararao T, Sawczyk M, Kučanda K, Manna D, Kundu PK, Lee JW, Král P, Klajn R. Reversible trapping and reaction acceleration within dynamically self-assembling nanoflasks. NATURE NANOTECHNOLOGY 2016; 11:82-8. [PMID: 26595335 DOI: 10.1038/nnano.2015.256] [Citation(s) in RCA: 161] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Accepted: 10/05/2015] [Indexed: 05/15/2023]
Abstract
The chemical behaviour of molecules can be significantly modified by confinement to volumes comparable to the dimensions of the molecules. Although such confined spaces can be found in various nanostructured materials, such as zeolites, nanoporous organic frameworks and colloidal nanocrystal assemblies, the slow diffusion of molecules in and out of these materials has greatly hampered studying the effect of confinement on their physicochemical properties. Here, we show that this diffusion limitation can be overcome by reversibly creating and destroying confined environments by means of ultraviolet and visible light irradiation. We use colloidal nanocrystals functionalized with light-responsive ligands that readily self-assemble and trap various molecules from the surrounding bulk solution. Once trapped, these molecules can undergo chemical reactions with increased rates and with stereoselectivities significantly different from those in bulk solution. Illumination with visible light disassembles these nanoflasks, releasing the product in solution and thereby establishes a catalytic cycle. These dynamic nanoflasks can be useful for studying chemical reactivities in confined environments and for synthesizing molecules that are otherwise hard to achieve in bulk solution.
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Affiliation(s)
- Hui Zhao
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Soumyo Sen
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - T Udayabhaskararao
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Michał Sawczyk
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Kristina Kučanda
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Debasish Manna
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Pintu K Kundu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Ji-Woong Lee
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, USA
- Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, USA
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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10
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Vayá I, Andreu I, Monje VT, Jiménez MC, Miranda MA. Mechanistic Studies on the Photoallergy Mediated by Fenofibric Acid: Photoreactivity with Serum Albumins. Chem Res Toxicol 2015; 29:40-6. [PMID: 26633742 DOI: 10.1021/acs.chemrestox.5b00357] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The photoreactivity of fenofibric acid (FA) in the presence of human and bovine serum albumins (HSA and BSA, respectively) has been investigated by steady-state irradiation, fluorescence, and laser flash photolysis (LFP). Spectroscopic measurements allowed for the determination of a 1:1 stoichiometry for the FA/SA complexes and pointed to a moderate binding of FA to the proteins; by contrast, the FA photoproducts were complexed more efficiently with SAs. Covalent photobinding to the protein, which is directly related to the photoallergic properties of the drug, was detected after long irradiation times and was found to be significantly higher in the case of BSA. Intermolecular FA-amino acid and FA-albumin irradiations resulted in the formation of photoproducts arising from coupling between both moieties, as indicated by mass spectrometric analysis. Mechanistic studies using model drug-amino acid linked systems indicated that the key photochemical step involved in photoallergy is formal hydrogen atom transfer from an amino acid residue to the excited benzophenone chromophore of FA or (more likely) its photoproducts. This results in the formation of caged radical pairs followed by C-C coupling to give covalent photoaducts.
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Affiliation(s)
- Ignacio Vayá
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - Inmaculada Andreu
- Unidad Mixta de Investigación IIS La Fe-UPV, Hospital Universitari i Politècnic La Fe , Avenida de Fernando Abril Martorell 106, 46026 Valencia, Spain
| | - Vicente T Monje
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - M Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - Miguel A Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
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11
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Wang S, Su HC, Yu L, Zhao XW, Qian LW, Zhu QY, Dai J. Fluorescence and energy transfer properties of heterometallic lanthanide-titanium oxo clusters coordinated with anthracenecarboxylate ligands. Dalton Trans 2015; 44:1882-8. [DOI: 10.1039/c4dt02968b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Fluorescence quenching and enhancement due to energy transfer between heterometallic lanthanide-titanium oxo clusters and 9-anthracenecarboxylate ligands are studied.
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Affiliation(s)
- Sheng Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Hu-Chao Su
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Lan Yu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Xiao-Wei Zhao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Li-Wen Qian
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Qin-Yu Zhu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Jie Dai
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
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12
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Wu X, Zhu W. Stability enhancement of fluorophores for lighting up practical application in bioimaging. Chem Soc Rev 2015; 44:4179-84. [DOI: 10.1039/c4cs00152d] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this Highlight, we emphasize some representative strategies including nanoparticle-encapsulating dyes, dye-doped nanoparticles and molecular engineering for stabilizing fluorophores.
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Affiliation(s)
- Xumeng Wu
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Weihong Zhu
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
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13
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Wu YY, Lu XW, Qi M, Su HC, Zhao XW, Zhu QY, Dai J. Titanium-oxo cluster with 9-anthracenecarboxylate antennae: a fluorescent and photocurrent transfer material. Inorg Chem 2014; 53:7233-40. [PMID: 24949861 DOI: 10.1021/ic500390j] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Attention has been paid to titanium-oxo clusters (TOCs) modified with functional molecules, because they can be considered as model systems for dye-sensitized titanium oxides in terms of their information in structures and electron transfer. We select 9-anthracenecarboxylate (9-AC) as a photoactive ligand and prepare two model compounds, [Ti6O6(O(i)Pr)6(9-AC)6] (1) and [Ti6O4(O(i)Pr)6(cat)4(9-AC)2] (2) (where cat = catecholate). Structures of the TOCs and the dye-TOC linkage are characterized by single-crystal analysis. Solvent-induced fluorescence change is observed for the cluster solution, and the fluorescence can be turned off by irradiating and on by oxygen bubbling. Photoinduced Ti(III) is responsible for the fluorescence extinction. The photocurrent conversion property of the clusters is examined by use of a three-electrode cell with cluster-coated indium tin oxide (ITO) electrodes. The results indicate that 9-AC is an effective photosensitizer and cluster 1 shows higher photocurrent intensity for its multiantenna structure in comparison with that of 2. Density of states for cluster 1 is calculated, in which the discrete energy bands of Ti6O24 include a number of new energy levels for the contribution of 9-AC molecules.
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Affiliation(s)
- Yin-Yin Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
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14
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Vayá I, Lhiaubet-Vallet V, Jiménez MC, Miranda MA. Photoactive assemblies of organic compounds and biomolecules: drug–protein supramolecular systems. Chem Soc Rev 2014; 43:4102-22. [DOI: 10.1039/c3cs60413f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modification of the drug excited state properties within proteins provides information on binding and may result in a different photoreactivity.
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Affiliation(s)
- Ignacio Vayá
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
| | - Virginie Lhiaubet-Vallet
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
| | - M. Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
| | - Miguel A. Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
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15
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Nishijima M, Kato H, Yang C, Fukuhara G, Mori T, Araki Y, Wada T, Inoue Y. Catalytic Bio-Supramolecular Photochirogenesis: Batch-Operated Enantiodifferentiating Photocyclodimerization of 2-Anthracenecarboxylate with Human Serum Albumin. ChemCatChem 2013. [DOI: 10.1002/cctc.201300160] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Bonancía P, Vayá I, Jiménez MC, Miranda MA. Intraprotein formation of a long wavelength absorbing complex and inhibition of excited-state deprotonation in a chiral hydroxybiphenyl. J Phys Chem B 2012. [PMID: 23205941 DOI: 10.1021/jp310587s] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The two enantiomers of 2-(2-hydroxybiphenyl-4-yl)propanoic acid ((S)- and (R)-BPOH) have been selected as probes for human serum albumin (HSA). Photophysical characterization in the absence of protein led to emission maxima, singlet energies, quantum yields, and fluorescence lifetime values of 332 nm, 91 kcal mol(-1), and 0.28 and 1.8 ns for BPOH or 414 nm, 79 kcal mol(-1), and 0.31 and 3.3 ns for the corresponding phenolate BPO(-); the pK(a)* was found to be 1.17. In the presence of HSA, a light-absorbing ground-state complex (S)-BPOH@HSA was detected (maximum at ca. 300 nm) whose intensity increased with increasing protein concentration. The fluorescence spectra of (S)-BPOH in PBS, after addition of HSA, revealed a progressive diminution of the phenolate band, indicating that excited-state deprotonation is disfavored within the hydrophobic protein cavities. A similar trend was observed for (R)-BPOH, but the extent of deprotonation was significantly lower for this enantiomer. Addition of increasing amounts of the site II displacement probe (S)-ibuprofen ((S)-IBP) to BPOH@HSA led to a significant decrease of the absorption maximum at ca. 300 nm and to a recovery of the phenolate emission band at ca. 410 nm, which were again configuration dependent. The transient absorption spectrum of (S)-BPOH consisted on a broad band centered at 380 nm, attributed to the first triplet excited state. A dramatic enhancement of the triplet lifetimes within HSA was observed (19.0 μs within protein versus 1.3 μs in bulk PBS), although no stereodifferentiation was noticed in this case.
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Affiliation(s)
- Paula Bonancía
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, 46022 Valencia, Spain
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Ni Y, Zhang F, Kokot S. Enantioselective binding interaction of the metolachlor pesticide enatiomers with bovine serum albumin--a spectroscopic analysis study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:753-761. [PMID: 22898111 DOI: 10.1016/j.saa.2012.07.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 07/13/2012] [Indexed: 06/01/2023]
Abstract
Enantioselective binding interaction of the pesticides, metolachlor (RAC-metolachlor) and its S-enantiomer (S-metolachlor), with bovine serum albumin (BSA) was investigated by fluorescence and UV-vis absorption spectroscopy. Both RAC- and S-metolachlors quenched the intrinsic fluorescence of BSA via a static mechanism, and various binding parameters indicated that electrostatic forces were involved in the binding of both of these compounds. Site marker competitive experiments demonstrated that S-metolachlor bound to site I of BSA, while R-metolachlor bound to site II, indicating the importance of enantiomeric factors for binding site selection. Further experiments showed that S-metolachlor had a higher binding affinity to BSA than R-metolachlor. The obtained spectral data were resolved with use of the multivariate curve resolution-alternating least squares method (MCR-ALS), and the extracted concentration profiles of the reacting species in the interaction were obtained. These profiles indicated that S-metolachlor was the main active constituent of RAC-metolachlor for binding with BSA, and these findings have significant implications in providing an explanation why S-metolachlor is the preferred herbicide in practice than RAC-metolachlor.
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Affiliation(s)
- Yongnian Ni
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Alonso R, Jiménez MC, Miranda MA. Stereodifferentiation in the Compartmentalized Photooxidation of a Protein-Bound Anthracene. Org Lett 2011; 13:3860-3. [DOI: 10.1021/ol201209h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Rafael Alonso
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - M. Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Miguel A. Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
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Marin M, Lhiaubet-Vallet V, Paris C, Yamaji M, Miranda MA. Photochemical and photophysical properties of dibenzoylmethane derivatives within protein. Photochem Photobiol Sci 2011; 10:1474-9. [DOI: 10.1039/c1pp05072a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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