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Bergmeister S, Ganner L, Ončák M, Gruber E. Gas-Phase Electronic Structure of Phthalocyanine Ions: A Study of Symmetry and Solvation Effects. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307816. [PMID: 38225692 DOI: 10.1002/advs.202307816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/19/2023] [Indexed: 01/17/2024]
Abstract
Research into and applications of phthalocyanines (Pc) are mostly connected to their intriguing electronic properties. Here, messenger-type UV-vis spectroscopy of two metal-free ions from the phthalocyanine family, cationic H2Pc+ and H2PcD+, along with their hydrates is performed. They show that the electronic properties of both ions can be traced to those in the conjugate base, Pc2-, however, they are affected by state splitting due to the reduced symmetry; in the H2Pc+ radical cation, a new band appears due to excitations into the singly-occupied molecular orbital. Quantum chemical spectra modeling reproduces all important features of the measured spectra and provides insight into the nature of electronic transitions. Hydration of the ions has only a mild effect on the electronic spectra, showing the stability of the electronic structure with respect to solvation effects.
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Affiliation(s)
- Stefan Bergmeister
- Institute for Ion and Applied Physics, University of Innsbruck, Technikerstraße 25, Innsbruck, 6020, Austria
| | - Lisa Ganner
- Institute for Ion and Applied Physics, University of Innsbruck, Technikerstraße 25, Innsbruck, 6020, Austria
| | - Milan Ončák
- Institute for Ion and Applied Physics, University of Innsbruck, Technikerstraße 25, Innsbruck, 6020, Austria
| | - Elisabeth Gruber
- Institute for Ion and Applied Physics, University of Innsbruck, Technikerstraße 25, Innsbruck, 6020, Austria
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He C, Teplyakov AV. 29,31- H Phthalocyanine Covalently Bonded Directly to a Si(111) Surface Retains Its Metalation Ability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10880-10888. [PMID: 30136849 DOI: 10.1021/acs.langmuir.8b02259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The reaction of metal-free phthalocyanine molecules with a chlorine-terminated Si(111) surface is investigated to produce a phthalocyanine functionality directly attached to a semiconductor surface, without additional linkers or layers. The carefully prepared Cl-Si(111) surface provides an oxygen-free substrate that is reacted with 29,31- H phthalocyanine (H2Pc) in a wet-chemistry process resulting in HCl elimination. The in situ metalation of this H2Pc-modified silicon surface with cobalt is confirmed, suggesting that the produced functionality is chemically active. These processes are investigated by X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and time-of-flight secondary ion mass spectrometry supplemented by density functional theory calculations. The morphology of the surface is monitored by atomic force microscopy. The combined spectroscopic, microscopic, and theoretical investigations demonstrate that additional linkers are not required for phthalocyanine attachment to occur, as the direct attachment can take place by forming Si-N bonds, and that the resulting surface species can participate in a metalation process.
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Affiliation(s)
- Chuan He
- Department of Chemistry and Biochemistry , University of Delaware , Newark DE 19716 , United States
| | - Andrew V Teplyakov
- Department of Chemistry and Biochemistry , University of Delaware , Newark DE 19716 , United States
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Pedrini A, Poggini L, Tudisco C, Torelli M, Giuffrida AE, Bertani F, Cimatti I, Otero E, Ohresser P, Sainctavit P, Suman M, Condorelli GG, Mannini M, Dalcanale E. Self-Assembly of TbPc 2 Single-Molecule Magnets on Surface through Multiple Hydrogen Bonding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:1702572. [PMID: 29226595 DOI: 10.1002/smll.201702572] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/26/2017] [Indexed: 06/07/2023]
Abstract
The complexation between 2-ureido-4[1H]-pyrimidinone (UPy) and 2,7-diamido-1,8-naphthyridine (NaPy) is used to promote the mild chemisorption of a UPy-functionalized terbium(III) double decker system on a silicon surface. The adopted strategy allows the single-molecule magnet behavior of the system to be maintained unaltered on the surface.
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Affiliation(s)
- Alessandro Pedrini
- Department of Chemistry, Life Sciences and Environmental Sustainability & INSTM RU of Parma, Parco delle Scienze 17/A, 43124, Parma, Italy
| | - Lorenzo Poggini
- Department of Chemistry "Ugo Schiff" & INSTM RU of Firenze University of Firenze, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Cristina Tudisco
- Department of Chemical Science & INSTM RU of Catania, University of Catania, Viale Andrea Doria 6, Catania, Italy
| | - Martina Torelli
- Department of Chemistry, Life Sciences and Environmental Sustainability & INSTM RU of Parma, Parco delle Scienze 17/A, 43124, Parma, Italy
| | - Antonino E Giuffrida
- Department of Chemical Science & INSTM RU of Catania, University of Catania, Viale Andrea Doria 6, Catania, Italy
| | - Federico Bertani
- Department of Chemistry, Life Sciences and Environmental Sustainability & INSTM RU of Parma, Parco delle Scienze 17/A, 43124, Parma, Italy
| | - Irene Cimatti
- Department of Chemistry "Ugo Schiff" & INSTM RU of Firenze University of Firenze, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Edwige Otero
- Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, BP 48, 91192, Gif sur Yvette, France
| | - Philippe Ohresser
- Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, BP 48, 91192, Gif sur Yvette, France
| | - Philippe Sainctavit
- Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, BP 48, 91192, Gif sur Yvette, France
- IMPMC-UMR7590, CNRS, UPMC, IRD, MNHN, 4 place Jussieu, 75005, Paris, France
| | - Michele Suman
- Barilla G.R. F.lli SpA, Advanced Laboratory Research, Via Mantova 166, 43122, Parma, Italy
| | - Guglielmo G Condorelli
- Department of Chemical Science & INSTM RU of Catania, University of Catania, Viale Andrea Doria 6, Catania, Italy
| | - Matteo Mannini
- Department of Chemistry "Ugo Schiff" & INSTM RU of Firenze University of Firenze, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Enrico Dalcanale
- Department of Chemistry, Life Sciences and Environmental Sustainability & INSTM RU of Parma, Parco delle Scienze 17/A, 43124, Parma, Italy
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Iezhokin I, den Boer D, Offermans P, Ridene M, Elemans JAAW, Adriaans GP, Flipse CFJ. Porphyrin molecules boost the sensitivity of epitaxial graphene for NH 3 detection. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:065001. [PMID: 27991424 DOI: 10.1088/1361-648x/29/6/065001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The sensitivity of quasi-free standing epitaxial graphene for NH3 detection is strongly enhanced by chemical functionalization with cobalt porphyrins resulting in a detection limit well below 100 ppb. Hybridization between NH3 and cobalt porphyrins induces a charge transfer to graphene and results in a shift of the graphene Fermi-level as detected by Hall measurements and theoretically explained by electronic structure calculations.
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Affiliation(s)
- I Iezhokin
- Molecular Materials and Nanosystems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
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Monteverde Videla AH, Osmieri L, Armandi M, Specchia S. Varying the morphology of Fe-N-C electrocatalysts by templating Iron Phthalocyanine precursor with different porous SiO 2 to promote the Oxygen Reduction Reaction. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.165] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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