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Tholen P, Wagner L, Ruthes JGA, Siemensmeyer K, Beglau THY, Muth D, Zorlu Y, Okutan M, Goldschmidt JC, Janiak C, Presser V, Yavuzçetin Ö, Yücesan G. A New Family of Layered Metal-Organic Semiconductors: Cu/V-Organophosphonates. Small 2023; 19:e2304057. [PMID: 37491772 DOI: 10.1002/smll.202304057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/10/2023] [Indexed: 07/27/2023]
Abstract
Herein, we report the design and synthesis of a layered redox-active, antiferromagnetic metal organic semiconductor crystals with the chemical formula [Cu(H2 O)2 V(µ-O)(PPA)2 ] (where PPA is phenylphosphonate). The crystal structure of [Cu(H2 O)2 V(µ-O)(PPA)2 ] shows that the metal phosphonate layers are separated by phenyl groups of the phenyl phosphonate linker. Tauc plotting of diffuse reflectance spectra indicates that [Cu(H2 O)2 V(µ-O)(PPA)2 ] has an indirect band gap of 2.19 eV. Photoluminescence (PL) spectra indicate a complex landscape of energy states with PL peaks at 1.8 and 2.2 eV. [Cu(H2 O)2 V(µ-O)(PPA)2 ] has estimated hybrid ionic and electronic conductivity values between 0.13 and 0.6 S m-1 . Temperature-dependent magnetization measurements show that [Cu(H2 O)2 V(µ-O)(PPA)2 ] exhibits short range antiferromagnetic order between Cu(II) and V(IV) ions. [Cu(H2 O)2 V(µ-O)(PPA)2 ] is also photoluminescent with photoluminescence quantum yield of 0.02%. [Cu(H2 O)2 V(µ-O)(PPA)2 ] shows high electrochemical, and thermal stability.
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Affiliation(s)
- Patrik Tholen
- Institut für Lebensmittelchemie und Toxikologie, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Lukas Wagner
- Department of Physics, Philipps-University Marburg, Renthof 7, 35037, Marburg, Germany
| | - Jean G A Ruthes
- INM-Leibniz Institute for New Materials, Campus D22, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, 66123, Campus D22, Saarbrücken, Germany
| | - Konrad Siemensmeyer
- Institut Quantenphänomene in neuen Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Thi Hai Yen Beglau
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Dominik Muth
- Department of Physics, Philipps-University Marburg, Renthof 7, 35037, Marburg, Germany
| | - Yunus Zorlu
- Department of Chemistry, Gebze Technical University, Kocaeli, 41100, Turkey
| | - Mustafa Okutan
- Institute of High Frequency and Quantum Electronics, University of Siegen, 57068, Siegen, Germany
| | | | - Christoph Janiak
- Institut Quantenphänomene in neuen Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Volker Presser
- INM-Leibniz Institute for New Materials, Campus D22, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, 66123, Campus D22, Saarbrücken, Germany
- saarene - Saarland Center for Energy Materials and Sustainability, 66123, Campus C42, Saarbrücken, Germany
| | - Özgür Yavuzçetin
- Department of Physics, University of Wisconsin-Whitewater, Whitewater, WI, 53190, USA
| | - Gündoğ Yücesan
- Institut für Lebensmittelchemie und Toxikologie, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
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Tholen P, Peeples CA, Ayhan MM, Wagner L, Thomas H, Imbrasas P, Zorlu Y, Baretzky C, Reineke S, Hanna G, Yücesan G. Tuning Structural and Optical Properties of Porphyrin-based Hydrogen-Bonded Organic Frameworks by Metal Insertion. Small 2022; 18:e2204578. [PMID: 36287102 DOI: 10.1002/smll.202204578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Herein, a simple way of tuning the optical and structural properties of porphyrin-based hydrogen-bonded organic frameworks (HOFs) is reported. By inserting transition metal ions into the porphyrin cores of GTUB-5 (p-H8 -TPPA (5,10,15,20-Tetrakis[p-phenylphosphonic acid] HOF), the authors show that it is possible to generate HOFs with different band gaps, photoluminescence (PL) life times, and textural properties. The band gaps of the resulting HOFs (viz., Cu-, Ni-, Pd-, and Zn-GTUB-5) are measured by diffuse reflectance and PL spectroscopy, as well as calculated via DFT, and the PL lifetimes are measured. Across the series, the band gaps vary over a narrow range from 1.37 to 1.62 eV, while the PL lifetimes vary over a wide range from 2.3 to 83 ns. These differences ultimately arise from metal-induced structural changes, viz., changes in the metal-to-nitrogen distances, number of hydrogen bonds, and pore volumes. DFT reveals that the band gaps of Cu-, Zn-, and Pd- GTUB-5 are governed by highest occupied/lowest unoccupied crystal orbitals (HOCO/LUCO) composed of π- orbitals on the porphyrin linkers, while that of Ni-GTUB-5 is governed by a HOCO and LUCO composed of Ni dorbitals. Overall, our findings show that metal-insertion can be used to optimize HOFs for optoelectronics and small-molecule capture applications.
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Affiliation(s)
- Patrik Tholen
- Institute for Food Chemistry and Toxicology, Germany, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Craig A Peeples
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
| | - Mehmet M Ayhan
- Department of Chemistry, Gebze Technical University, Gebze, Kocaeli, 41400, Turkey
| | - Lukas Wagner
- Physics of Solar Energy Conversion Group, Department of Physics, Philipps-University Marburg, Renthof 7, 35032, Marburg, Germany
- Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110, Freiburg, Germany
| | - Heidi Thomas
- Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universität Dresden, Nöthnitzer Straße 61, 01062, Dresden, Germany
| | - Paulius Imbrasas
- Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universität Dresden, Nöthnitzer Straße 61, 01062, Dresden, Germany
| | - Yunus Zorlu
- Department of Chemistry, Gebze Technical University, Gebze, Kocaeli, 41400, Turkey
| | - Clemens Baretzky
- Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110, Freiburg, Germany
| | - Sebastian Reineke
- Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110, Freiburg, Germany
| | - Gabriel Hanna
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
| | - Gündoğ Yücesan
- Institute for Food Chemistry and Toxicology, Germany, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
- Institute für Anorganische Chemie und Structurchemie, Heinrich Heine Universität Düsseldorf, Universitätstr. 1, 40225, Düsseldorf, Germany
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Tholen P, Brown CN, Keil C, Bayir A, Zeng HH, Haase H, Thompson RB, Lengyel I, Yücesan G. A 2,7-dichlorofluorescein derivative to monitor microcalcifications. Mol Syst Des Eng 2022; 7:1415-1421. [PMID: 37927331 PMCID: PMC10624163 DOI: 10.1039/d2me00185c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Herein, we report the crystal structure of 2,7-dichlorofluorescein methyl ester (DCF-ME) and its fluorescence response to hydroxyapatite binding. The reported fluorophore is very selective for staining the bone matrix and provides turn-on fluorescence upon hydroxyapatite binding. The reported fluorophore can readily pass the cell membrane of the C2C12 cell line, and it is non-toxic for the cell line. The reported fluorophore DCF-ME may find applications in monitoring bone remodeling and microcalcification as an early diagnosis tool for breast cancer and age-related macular degeneration.
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Affiliation(s)
- Patrik Tholen
- Institute for Food Chemistry and Toxicology, Germany, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
| | - Connor N Brown
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Claudia Keil
- Institute for Food Chemistry and Toxicology, Germany, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
| | - Ali Bayir
- The Department of Chemistry, Yıldız Technical University, 34220, Esenler, Istanbul, Turkey
| | - Hui-Hui Zeng
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Hajo Haase
- Institute for Food Chemistry and Toxicology, Germany, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
| | - Richard B Thompson
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Imre Lengyel
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Gündoğ Yücesan
- Institute for Food Chemistry and Toxicology, Germany, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
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von Stillfried S, Freeborn B, Windeck S, Boor P, Böcker J, Schmidt J, Tholen P, Röhrig R, Majeed R, Wienströer J, Bremer J, Weis J, Knüchel R, Breitbach A, Bülow RD, Cacchi C, Wucherpfennig S, Märkl B, Claus R, Dhillon C, Schaller T, Sipos E, Spring O, Braun G, Römmele C, Kling E, Kröncke T, Wittmann M, Hirschbühl K, Heppner FL, Meinhardt J, Radbruch H, Streit S, Horst D, Elezkurtaj S, Quaas A, Göbel H, Friemann J, Hansen T, Titze U, Lorenzen J, Reuter T, Woloszyn J, Baretton G, Hilsenbeck J, Meinhardt M, Pablik J, Sommer L, Holotiuk O, Meinel M, Esposito I, Crudele G, Seidl M, Mahlke N, Hartmann A, Haller F, Eichhorn P, Lange F, Amann KU, Coras R, Ingenwerth M, Rawitzer J, Schmid KW, Theegarten D, Gradhand E, Smith K, Wild P, Birngruber CG, Schilling O, Werner M, Acker T, Gattenlöhner S, Franz J, Metz I, Stadelmann C, Stork L, Thomas C, Zechel S, Ströbel P, Fathke C, Harder A, Wickenhauser C, Glatzel M, Matschke J, Krasemann S, Dietz E, Edler C, Fitzek A, Fröb D, Heinemann A, Heinrich F, Klein A, Kniep I, Lohner L, Möbius D, Ondruschka B, Püschel K, Schädler J, Schröder AS, Sperhake JP, Aepfelbacher M, Fischer N, Lütgehetmann M, Pfefferle S, Jonigk D, Werlein C, Domke LM, Hartmann L, Klein I, Schirmacher P, Schwab C, Röcken C, Langer D, Roth W, Strobl S, Rudelius M, Delbridge C, Kasajima A, Kuhn PH, Slotta-Huspenina J, Weichert W, Weirich G, Stock K, Barth P, Schnepper A, Wardelmann E, Evert K, Evert M, Büttner A, Manhart J, Nigbur S, Bösmüller H, Fend F, Granai M, Klingel K, Warm V, Steinestel K, Umathum VG, Rosenwald A, Vogt N, Kurz F. [Update on collaborative autopsy-based research in German pathology, neuropathology, and forensic medicine]. Pathologie (Heidelb) 2022; 43:101-105. [PMID: 36114379 PMCID: PMC9483541 DOI: 10.1007/s00292-022-01117-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 08/30/2022] [Indexed: 01/02/2023]
Abstract
BACKGROUND Autopsies are a valuable tool for understanding disease, including COVID-19. MATERIALS AND METHODS The German Registry of COVID-19 Autopsies (DeRegCOVID), established in April 2020, serves as the electronic backbone of the National Autopsy Network (NATON), launched in early 2022 following DEFEAT PANDEMIcs. RESULTS The NATON consortium's interconnected, collaborative autopsy research is enabled by an unprecedented collaboration of 138 individuals at more than 35 German university and non-university autopsy centers through which pathology, neuropathology, and forensic medicine autopsy data including data on biomaterials are collected in DeRegCOVID and tissue-based research and methods development are conducted. More than 145 publications have now emerged from participating autopsy centers, highlighting various basic science and clinical aspects of COVID-19, such as thromboembolic events, organ tropism, SARS-CoV‑2 detection methods, and infectivity of SARS-CoV-2 at autopsy. CONCLUSIONS Participating centers have demonstrated the high value of autopsy and autopsy-derived data and biomaterials to modern medicine. The planned long-term continuation and further development of the registry and network, as well as the open and participatory design, will allow the involvement of all interested partners.
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Affiliation(s)
- Saskia von Stillfried
- Institut für Pathologie, Universitätsklinik RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Deutschland
| | - Benita Freeborn
- Institut für Pathologie, Universitätsklinik RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Deutschland
| | - Svenja Windeck
- Institut für Pathologie, Universitätsklinik RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Deutschland
| | - Peter Boor
- Institut für Pathologie, Universitätsklinik RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Deutschland ,Medizinische Klinik II (Nephrologie und Immunologie), Universitätsklinik RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Deutschland ,Elektronenmikroskopische Einrichtung, Universitätsklinik RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Deutschland
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Peeples CA, Çetinkaya A, Tholen P, Schmitt FJ, Zorlu Y, Yu KB, Yazaydin O, Beckmann J, Hanna G, Yücesan G. Coordination-induced band gap reduction in a metal-organic framework. Chemistry 2021; 28:e202104041. [PMID: 34806792 PMCID: PMC9303878 DOI: 10.1002/chem.202104041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Indexed: 11/21/2022]
Abstract
Herein, we report on the synthesis of a microporous, three‐dimensional phosphonate metal–organic framework (MOF) with the composition Cu3(H5‐MTPPA)2 ⋅ 2 NMP (H8‐MTPPA=methane tetra‐p‐phenylphosphonic acid and NMP=N‐methyl‐2‐pyrrolidone). This MOF, termed TUB1, has a unique one‐dimensional inorganic building unit composed of square planar and distorted trigonal bipyramidal copper atoms. It possesses a (calculated) BET surface area of 766.2 m2/g after removal of the solvents from the voids. The Tauc plot for TUB1 yields indirect and direct band gaps of 2.4 eV and 2.7 eV, respectively. DFT calculations reveal the existence of two spin‐dependent gaps of 2.60 eV and 0.48 eV for the alpha and beta spins, respectively, with the lowest unoccupied crystal orbital for both gaps predominantly residing on the square planar copper atoms. The projected density of states suggests that the presence of the square planar copper atoms reduces the overall band gap of TUB1, as the beta‐gap for the trigonal bipyramidal copper atoms is 3.72 eV.
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Affiliation(s)
| | - Ahmet Çetinkaya
- Yildiz Technical University: Yildiz Teknik Universitesi, chemistry, TURKEY
| | - Patrik Tholen
- TU Berlin: Technische Universitat Berlin, Chemistry, GERMANY
| | - Franz-Josef Schmitt
- Martin-Luther-Universität Halle-Wittenberg: Martin-Luther-Universitat Halle-Wittenberg, Institur für Physik, GERMANY
| | - Yunus Zorlu
- Gebze Institute of Technology: Gebze Teknik Universitesi, Chemistry, TURKEY
| | - Kai Bin Yu
- Imperial College London, Chemistry, UNITED KINGDOM
| | | | - Jens Beckmann
- Universität Bremen, Institut fuer Biologie und Chemie, Leobener Str., 28359, Bremen, GERMANY
| | | | - Gündoğ Yücesan
- TU Berlin: Technische Universitat Berlin, Chemistry, GERMANY
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Künzler S, Rathjen S, Rüger K, Würdemann MS, Wernke M, Tholen P, Girschik C, Schmidtmann M, Landais Y, Müller T. Chiral Chalcogenyl-Substituted Naphthyl- and Acenaphthyl-Silanes and Their Cations. Chemistry 2020; 26:16441-16449. [PMID: 32627900 PMCID: PMC7756486 DOI: 10.1002/chem.202002977] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/02/2020] [Indexed: 11/30/2022]
Abstract
Cyclic silylated chalconium borates 13[B(C6F5)4] and 14[B(C6F5)4] with peri‐acenaphthyl and peri‐naphthyl skeletons were synthesized from unsymmetrically substituted silanes 3, 4, 6, 7, 9 and 10 using the standard Corey protocol (Chalcogen Ch=O, S, Se, Te). The configuration at the chalcogen atom is trigonal pyramidal for Ch=S, Se, Te, leading to the formation of cis‐ and trans‐isomers in the case of phenylmethylsilyl cations. With the bulkier tert‐butyl group at silicon, the configuration at the chalcogen atoms is predetermined to give almost exclusively the trans‐configurated cyclic silylchalconium ions. The barriers for the inversion of the configuration at the sulfur atoms of sulfonium ions 13 c and 14 a are substantial (72–74 kJ mol−1) as shown by variable temperature NMR spectroscopy. The neighboring group effect of the thiophenyl substituent is sufficiently strong to preserve chiral information at the silicon atom at low temperatures.
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Affiliation(s)
- Sandra Künzler
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Saskia Rathjen
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Katherina Rüger
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Marie S Würdemann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Marcel Wernke
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Patrik Tholen
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Corinna Girschik
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Marc Schmidtmann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Yannick Landais
- Institute of Molecular Sciences (ISM), University of Bordeaux, CNRS, UMR-5255, 351 Cours de la libération, 33400, Talence, France, European Union
| | - Thomas Müller
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
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Tholen P, Peeples CA, Schaper R, Bayraktar C, Erkal TS, Ayhan MM, Çoşut B, Beckmann J, Yazaydin AO, Wark M, Hanna G, Zorlu Y, Yücesan G. Semiconductive microporous hydrogen-bonded organophosphonic acid frameworks. Nat Commun 2020; 11:3180. [PMID: 32576877 PMCID: PMC7311548 DOI: 10.1038/s41467-020-16977-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/04/2020] [Indexed: 12/31/2022] Open
Abstract
Herein, we report a semiconductive, proton-conductive, microporous hydrogen-bonded organic framework (HOF) derived from phenylphosphonic acid and 5,10,15,20-tetrakis[p-phenylphosphonic acid] porphyrin (GTUB5). The structure of GTUB5 was characterized using single crystal X-ray diffraction. A narrow band gap of 1.56 eV was extracted from a UV-Vis spectrum of pure GTUB5 crystals, in excellent agreement with the 1.65 eV band gap obtained from DFT calculations. The same band gap was also measured for GTUB5 in DMSO. The proton conductivity of GTUB5 was measured to be 3.00 × 10-6 S cm-1 at 75 °C and 75% relative humidity. The surface area was estimated to be 422 m2 g-1 from grand canonical Monte Carlo simulations. XRD showed that GTUB5 is thermally stable under relative humidities of up to 90% at 90 °C. These findings pave the way for a new family of organic, microporous, and semiconducting materials with high surface areas and high thermal stabilities.
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Affiliation(s)
- Patrik Tholen
- Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Craig A Peeples
- University of Alberta, 116 St. and 85 Ave., Edmonton, AB, T6G 2R3, Canada
| | - Raoul Schaper
- Carl von Ossietzky Universität Oldenburg, Carl-von-Ossietzky Str. 9-11, 26129, Oldenburg, Germany
| | - Ceyda Bayraktar
- Gebze Technical University, Kimya Bölümü, 41400, Gebze-Kocaeli, Turkey
| | | | | | - Bünyemin Çoşut
- Gebze Technical University, Kimya Bölümü, 41400, Gebze-Kocaeli, Turkey
| | - Jens Beckmann
- Universität Bremen, Leobener Str. 7, 28359, Bremen, Germany
| | - A Ozgur Yazaydin
- University College London, Torrington Place, London, WC1E 7JE, UK
| | - Michael Wark
- Carl von Ossietzky Universität Oldenburg, Carl-von-Ossietzky Str. 9-11, 26129, Oldenburg, Germany
| | - Gabriel Hanna
- University of Alberta, 116 St. and 85 Ave., Edmonton, AB, T6G 2R3, Canada
| | - Yunus Zorlu
- Gebze Technical University, Kimya Bölümü, 41400, Gebze-Kocaeli, Turkey.
| | - Gündoğ Yücesan
- Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.
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Siemensmeyer K, Peeples CA, Tholen P, Schmitt FJ, Çoşut B, Hanna G, Yücesan G. Phosphonate Metal-Organic Frameworks: A Novel Family of Semiconductors. Adv Mater 2020; 32:e2000474. [PMID: 32374449 DOI: 10.1002/adma.202000474] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/21/2020] [Accepted: 04/06/2020] [Indexed: 06/11/2023]
Abstract
Herein, the first semiconducting and magnetic phosphonate metal-organic framework (MOF), TUB75, is reported, which contains a 1D inorganic building unit composed of a zigzag chain of corner-sharing copper dimers. The solid-state UV-vis spectrum of TUB75 reveals the existence of a narrow bandgap of 1.4 eV, which agrees well with the density functional theory (DFT)-calculated bandgap of 1.77 eV. Single-crystal conductivity measurements for different orientations of the individual crystals yield a range of conductances from 10-3 to 103 S m-1 at room temperature, pointing to the directional nature of the electrical conductivity in TUB75. Magnetization measurements show that TUB75 is composed of antiferromagnetically coupled copper dimer chains. Due to their rich structural chemistry and exceptionally high thermal/chemical stabilities, phosphonate MOFs like TUB75 may open new vistas in engineerable electrodes for supercapacitors.
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Abstract
The reactions of dipotassium germacyclopentadienediide with two Group 13 dichlorides, Cp*BCl2 and Cp*AlCl2, yield two structurally different products. In the case of boron a borole complex of germanium(ii) is obtained. The aluminium halide gives an unprecedented neutral germaaluminocene. Both compounds were fully characterised by multinuclear NMR spectroscopy supported by DFT computations. The molecular structure of the germaaluminocene was determined by XRD.
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Affiliation(s)
- Lena Albers
- Institute of Chemistry, Carl von Ossietzky University Oldenburg Carl von Ossietzky-Straße 9-11 D-26129 Oldenburg Federal Republic of Germany
| | - Patrik Tholen
- Institute of Chemistry, Carl von Ossietzky University Oldenburg Carl von Ossietzky-Straße 9-11 D-26129 Oldenburg Federal Republic of Germany
| | - Marc Schmidtmann
- Institute of Chemistry, Carl von Ossietzky University Oldenburg Carl von Ossietzky-Straße 9-11 D-26129 Oldenburg Federal Republic of Germany
| | - Thomas Müller
- Institute of Chemistry, Carl von Ossietzky University Oldenburg Carl von Ossietzky-Straße 9-11 D-26129 Oldenburg Federal Republic of Germany
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Tholen P, Dong Z, Schmidtmann M, Albers L, Müller T. A Neutral η 5 -Aminoborole Complex of Germanium(II). Angew Chem Int Ed Engl 2018; 57:13319-13324. [PMID: 30070743 DOI: 10.1002/anie.201808271] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/01/2018] [Indexed: 11/09/2022]
Abstract
The synthesis of two η5 -aminoborole complexes of germanium(II) from the reaction of a germole dianion with aminoboron dichlorides is reported. This reaction constitutes a remarkable example of a germole-to-borole transformation. The two aminoborole complexes of germanium(II) were fully characterized by multinuclear NMR spectroscopy, IR spectroscopy, HRMS, and, in one case, by X-ray crystallography. The results of quantum-mechanical calculations favor the electronic structure of a half-sandwich complex of GeII over an ionic representation with a germanium dication stabilized by an aromatic aminoborole dianion.
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Affiliation(s)
- Patrik Tholen
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Zhaowen Dong
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Marc Schmidtmann
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Lena Albers
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Thomas Müller
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
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Affiliation(s)
- Patrik Tholen
- Institut für ChemieCarl von Ossietzky Universität Oldenburg Carl von Ossietzky-Straße 9–11 26129 Oldenburg Deutschland
| | - Zhaowen Dong
- Institut für ChemieCarl von Ossietzky Universität Oldenburg Carl von Ossietzky-Straße 9–11 26129 Oldenburg Deutschland
| | - Marc Schmidtmann
- Institut für ChemieCarl von Ossietzky Universität Oldenburg Carl von Ossietzky-Straße 9–11 26129 Oldenburg Deutschland
| | - Lena Albers
- Institut für ChemieCarl von Ossietzky Universität Oldenburg Carl von Ossietzky-Straße 9–11 26129 Oldenburg Deutschland
| | - Thomas Müller
- Institut für ChemieCarl von Ossietzky Universität Oldenburg Carl von Ossietzky-Straße 9–11 26129 Oldenburg Deutschland
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Brahms C, Tholen P, Saak W, Doye S. An (Aminopyrimidinato)titanium Catalyst for the Hydroamination of Alkynes and Alkenes. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Leenen A, Stegmann J, Tholen P, Lenhartz H. Sonographische Darstellung juveniler colorectaler Polypen. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1326848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Leenen A, Stegmann J, Tholen P. Diffusionsgewichtete MRT bei akuter Pyelonephritis im Kindes- und Jugendalter. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1326850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Leenen A, Stegmann J, Tholen P, Werbeck R. Diffusionsgewichtete MR-Bildgebung bei der akuten Appendizitis im Kindes- und Jugendalter. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1286234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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