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Mallada B, Błoński P, Langer R, Jelínek P, Otyepka M, de la Torre B. On-Surface Synthesis of One-Dimensional Coordination Polymers with Tailored Magnetic Anisotropy. ACS Appl Mater Interfaces 2021; 13:32393-32401. [PMID: 34227386 DOI: 10.1021/acsami.1c04693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
One-dimensional (1D) metalloporphyrin polymers can exhibit magnetism, depending on the central metal ion and the surrounding ligand field. The possibility of tailoring the magnetic signal in such nanostructures is highly desirable for potential spintronic devices. We present low-temperature (4.2 K) scanning tunneling microscopy and spectroscopy (LT-STM/STS) in combination with high-resolution atomic force microscopy (AFM) and a density functional theory (DFT) study of a two-step synthetic protocol to grow a robust Fe-porphyrin-based 1D polymer on-surface and to tune its magnetic properties. A thermally assisted Ullmann-like coupling reaction of Fe(III)diphenyl-bromine-porphyrin (2BrFeDPP-Cl) on Au(111) in ultra-high vacuum results in long (up to 50 nm) 1D metal-organic wires with regularly distributed magnetic and (electronically) independent porphyrins units, as confirmed by STM images. Thermally controlled C-H bond activation leads to conformational changes in the porphyrin units, which results in molecular planarization steered by 2D surface confinement, as confirmed by high-resolution AFM images. Spin-flip STS images in combination with DFT self-consistent spin-orbit coupling calculations of porphyrin units with different structural conformations reveal that the magnetic anisotropy of the triplet ground state of the central Fe ion units drops down substantially upon intramolecular rearrangements. These results point out to new opportunities for realizing and studying well-defined 1D organic magnets on surfaces and demonstrate the feasibility of tailoring their magnetic properties.
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Affiliation(s)
- Benjamin Mallada
- Regional Centre of Advanced Technologies and Material, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
- Institute of Physics, The Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic
| | - Piotr Błoński
- Regional Centre of Advanced Technologies and Material, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
| | - Rostislav Langer
- Regional Centre of Advanced Technologies and Material, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
- Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 78371 Olomouc, Czech Republic
| | - Pavel Jelínek
- Regional Centre of Advanced Technologies and Material, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
- Institute of Physics, The Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Material, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
- IT4Innovations, Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba,Czech Republic
| | - Bruno de la Torre
- Regional Centre of Advanced Technologies and Material, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
- Institute of Physics, The Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic
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Molnar E, Gal E, Gaina L, Cristea C, Fischer-Fodor E, Perde-Schrepler M, Achimas-Cadariu P, Focsan M, Silaghi-Dumitrescu L. Novel Phenothiazine-Bridged Porphyrin-(Hetero)aryl dyads: Synthesis, Optical Properties, In Vitro Cytotoxicity and Staining of Human Ovarian Tumor Cell Lines. Int J Mol Sci 2020; 21:ijms21093178. [PMID: 32365924 PMCID: PMC7246510 DOI: 10.3390/ijms21093178] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 01/28/2023] Open
Abstract
We report here the synthetic procedure applied for the preparation of new AB3-type and trans-A2B2 type meso-halogenophenothiazinyl-phenyl-porphyrin derivatives, their metal core complexation and their peripheral modification using Suzuki-Miyaura cross coupling reactions with various (hetero)aryl (phenothiazinyl, 7-formyl-phenothiazinyl, (9-carbazolyl)-phenyl and 4-formyl-phenyl, phenyl) boronic acid derivatives. The meso-phenothiazinyl-phenyl-porphyrin (MPP) dyes family was thus extended by a series of novel phenothiazine-bridged porphyrin-(hetero)aryl dyads characterized by UV-Vis absorption/emission properties typical to the porphyrin chromophore, slightly modulated by increasing the size of peripheral substituents. Three phenothiazine-bridged porphyrin-heteroaryl dyads with fluorescence emission above 655 nm were selected as fluorophores in red spectral region for applications in cellular staining of human ovarian tumors. In vitro experiments of cell metabolic activity displayed a moderate toxicity on human ovarian tumor cell lines (OVCAR-3, cisplatin-sensitive A2780 and cisplatin-resistant A2780cis respectively). Visualization of the stained living cells was performed both by fluorescence microscopy imaging and by fluorescence lifetime imaging under two photon excitation (TPE-FLIM), confirming their cellular uptake and the capability of staining the cell nucleus.
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Affiliation(s)
- Eva Molnar
- The Research Center on Fundamental and Applied Heterochemistry, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos street, RO-400028 Cluj-Napoca, Romania; (E.M.); (E.G.); (L.G.); (L.S.-D.)
| | - Emese Gal
- The Research Center on Fundamental and Applied Heterochemistry, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos street, RO-400028 Cluj-Napoca, Romania; (E.M.); (E.G.); (L.G.); (L.S.-D.)
| | - Luiza Gaina
- The Research Center on Fundamental and Applied Heterochemistry, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos street, RO-400028 Cluj-Napoca, Romania; (E.M.); (E.G.); (L.G.); (L.S.-D.)
| | - Castelia Cristea
- The Research Center on Fundamental and Applied Heterochemistry, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos street, RO-400028 Cluj-Napoca, Romania; (E.M.); (E.G.); (L.G.); (L.S.-D.)
- Correspondence: ; Tel.: +40-264-593833
| | - Eva Fischer-Fodor
- Department of Radiobiology and Tumor Biology, Institute of Oncology “Prof.Dr. Ion Chiricuta”, 34-36 Republicii street, RO-400015 Cluj-Napoca, Romania; (E.F.-F.); (M.P.-S.)
- Medfuture Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, 8 Babes street, RO-400012 Cluj-Napoca, Romania
| | - Maria Perde-Schrepler
- Department of Radiobiology and Tumor Biology, Institute of Oncology “Prof.Dr. Ion Chiricuta”, 34-36 Republicii street, RO-400015 Cluj-Napoca, Romania; (E.F.-F.); (M.P.-S.)
| | - Patriciu Achimas-Cadariu
- Department of Surgery, Institute of Oncology “Prof.Dr. Ion Chiricuta”, 34-36 Republicii street, 400015 Cluj-Napoca, Romania;
- Department of Surgery and Gynecological Oncology, University of Medicine and Pharmacy Iuliu Hatieganu, 23 Marinescu street, 400337 Cluj-Napoca, Romania
| | - Monica Focsan
- Institute for Interdisciplinary Experimental Research in Bionanoscience, Nanobiophotonics Laboratory, Babeş-Bolyai University, 42 Laurian street, 400271 Cluj-Napoca, Romania;
| | - Luminita Silaghi-Dumitrescu
- The Research Center on Fundamental and Applied Heterochemistry, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos street, RO-400028 Cluj-Napoca, Romania; (E.M.); (E.G.); (L.G.); (L.S.-D.)
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