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Feng Y, Fu F, Zeng L, Zhao M, Xin X, Liang J, Zhou M, Fang X, Lv H, Yang GY. Atomically Precise Silver Clusters Stabilized by Lacunary Polyoxometalates with Photocatalytic CO 2 Reduction Activity. Angew Chem Int Ed Engl 2024; 63:e202317341. [PMID: 38153620 DOI: 10.1002/anie.202317341] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 12/29/2023]
Abstract
The syntheses of atomically precise silver (Ag) clusters stabilized by multidentate lacunary polyoxometalate (POM) ligands have been emerging as a promising but challenging research direction, the combination of redox-active POM ligands and silver clusters will render them unexpected geometric structures and catalytic properties. Herein, we report the successful construction of two structurally-new lacunary POM-stabilized Ag clusters, TBA6 H14 Ag14 (DPPB)4 (CH3 CN)9 [Ag24 (Si2 W18 O66 )3 ] ⋅ 10CH3 CN ⋅ 9H2 O ({Ag24 (Si2 W18 O66 )3 }, TBA=tetra-n-butylammonium, DPPB=1,4-Bis(diphenylphosphino)butane) and TBA14 H6 Ag9 Na2 (H2 O)9 [Ag27 (Si2 W18 O66 )3 ] ⋅ 8CH3 CN ⋅ 10H2 O ({Ag27 (Si2 W18 O66 )3 }), using a facile one-pot solvothermal approach. Under otherwise identical synthetic conditions, the molecular structures of two POM-stabilized Ag clusters could be readily tuned by the addition of different organic ligands. In both compounds, the central trefoil-propeller-shaped {Ag24 }14+ and {Ag27 }17+ clusters bearing 10 delocalized valence electrons are stabilized by three C-shaped {Si2 W18 O66 } units. The femtosecond/nanosecond transient absorption spectroscopy revealed the rapid charge transfer between {Ag24 }14+ core and {Si2 W18 O66 } ligands. Both compounds have been pioneeringly investigated as catalysts for photocatalytic CO2 reduction to HCOOH with a high selectivity.
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Affiliation(s)
- Yeqin Feng
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
| | - Fangyu Fu
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
| | - Linlin Zeng
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Mengyun Zhao
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
| | - Xing Xin
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
| | - Jiakai Liang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
| | - Meng Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xikui Fang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Hongjin Lv
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
| | - Guo-Yu Yang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, China
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Hung CM, Mai CL, Wu CC, Chen BH, Lu CH, Chu CC, Wang MC, Yang SD, Chen HC, Yeh CY, Chou PT. Self-Assembled Monolayers of Bi-Functionalized Porphyrins: A Novel Class of Hole-Layer-Coordinating Perovskites and Indium Tin Oxide in Inverted Solar Cells. Angew Chem Int Ed Engl 2023; 62:e202309831. [PMID: 37594921 DOI: 10.1002/anie.202309831] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/10/2023] [Accepted: 08/18/2023] [Indexed: 08/20/2023]
Abstract
Self-assembled monolayers (SAMs) offer the advantage of facile interfacial modification, leading to significant improvements in device performance. In this study, we report the design and synthesis of a new series of carboxylic acid-functionalized porphyrin derivatives, namely AC-1, AC-3, and AC-5, and present, for the first time, a strategy to exploit the large π-moiety of porphyrins as a backbone for interfacing the indium tin oxide (ITO) electrode and perovskite active layer in an inverted perovskite solar cell (PSC) configuration. The electron-rich nature of porphyrins facilitates hole transfer and the formation of SAMs, resulting in a dense surface that minimizes defects. Comprehensive spectroscopic and dynamic studies demonstrate that the double-anchored AC-3 and AC-5 enhance SAMs on ITO, passivate the perovskite layer, and function as conduits to facilitate hole transfer, thus significantly boosting the performance of PSCs. The champion inverted PSC employing AC-5 SAM achieves an impressive solar efficiency of 23.19 % with a high fill factor of 84.05 %. This work presents a novel molecular engineering strategy for functionalizing SAMs to tune the energy levels, molecular dipoles, packing orientations to achieve stable and efficient solar performance. Importantly, our comprehensive investigation has unraveled the associated mechanisms, offering valuable insights for future advancements in PSCs.
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Affiliation(s)
- Chieh-Ming Hung
- Department of Chemistry, Center for Emerging Materials and Advanced Devices, National Taiwan University, 106319, Taipei, Taiwan
| | - Chi-Lun Mai
- Department of Chemistry, i-Center for Advanced Science and Technology (i-CAST), Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, 402202, Taichung, Taiwan
| | - Chi-Chi Wu
- Department of Chemistry, Center for Emerging Materials and Advanced Devices, National Taiwan University, 106319, Taipei, Taiwan
| | - Bo-Han Chen
- Institute of Photonics Technologies, National Tsing Hua University, 300044, Hsinchu, Taiwan
| | - Chih-Hsuan Lu
- Institute of Photonics Technologies, National Tsing Hua University, 300044, Hsinchu, Taiwan
| | - Che-Chun Chu
- Department of Chemistry, Center for Emerging Materials and Advanced Devices, National Taiwan University, 106319, Taipei, Taiwan
| | - Meng-Chuan Wang
- Department of Chemistry, i-Center for Advanced Science and Technology (i-CAST), Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, 402202, Taichung, Taiwan
| | - Shang-Da Yang
- Institute of Photonics Technologies, National Tsing Hua University, 300044, Hsinchu, Taiwan
| | - Hsieh-Chih Chen
- Department of Chemistry, Fu Jen Catholic University, 242062, New Taipei City, Taiwan
| | - Chen-Yu Yeh
- Department of Chemistry, i-Center for Advanced Science and Technology (i-CAST), Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, 402202, Taichung, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry, Center for Emerging Materials and Advanced Devices, National Taiwan University, 106319, Taipei, Taiwan
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Chettri A, Yang T, Cole HD, Shi G, Cameron CG, McFarland SA, Dietzek-Ivanšić B. Using Biological Photophysics to Map the Excited-State Topology of Molecular Photosensitizers for Photodynamic Therapy. Angew Chem Int Ed Engl 2023; 62:e202301452. [PMID: 36827484 PMCID: PMC10079593 DOI: 10.1002/anie.202301452] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 02/26/2023]
Abstract
This study employs TLD1433, a RuII -based photodynamic therapy (PDT) agent in human clinical trials, as a benchmark to establish protocols for studying the excited-state dynamics of photosensitizers (PSs) in cellulo, in the local environment provided by human cancer cells. Very little is known about the excited-state properties of any PS in live cells, and for TLD1433, it is terra incognita. This contribution targets a general problem in phototherapy, which is how to interrogate the light-triggered, function-determining processes of the PSs in the relevant biological environment, and establishes methodological advances to study the ultrafast photoinduced processes for TLD1433 when taken up by MCF7 cells. We generalize the methodological developments and results in terms of molecular physics by applying them to TLD1433's analogue TLD1633, making this study a benchmark to investigate the excited-state dynamics of phototoxic compounds in the complex biological environment.
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Affiliation(s)
- Avinash Chettri
- Department Functional Interfaces, Leibniz-Institute of Photonic Technology Jena, Albert-Einstein-Straße 9, 07745, Jena, Germany
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Tingxiang Yang
- Department Functional Interfaces, Leibniz-Institute of Photonic Technology Jena, Albert-Einstein-Straße 9, 07745, Jena, Germany
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Houston D Cole
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX-76019, USA
| | - Ge Shi
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX-76019, USA
| | - Colin G Cameron
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX-76019, USA
| | - Sherri A McFarland
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX-76019, USA
| | - Benjamin Dietzek-Ivanšić
- Department Functional Interfaces, Leibniz-Institute of Photonic Technology Jena, Albert-Einstein-Straße 9, 07745, Jena, Germany
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
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Reina G, Beneventi GM, Kaur R, Biagiotti G, Cadranel A, Ménard-Moyon C, Nishina Y, Richichi B, Guldi DM, Bianco A. Graphene oxide-BODIPY conjugates as bright fluorescent material. Chemistry 2023:e202300266. [PMID: 36892563 DOI: 10.1002/chem.202300266] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/10/2023]
Abstract
Covalent functionalization of graphene oxide (GO) with boron dipyrromethenes (BODIPYs) was achieved through a facile synthesis, affording two different GO-BODIPY conjugates where the main difference lies in the nature of the spacer and the type of bonds between the two components. The use of a long but flexible spacer afforded strong electronic GO-BODIPY interactions in the ground state. This drastically altered the light absorption of the BODIPY structure and impeded its selective excitation. In contrast, the utilisation of a short, but rigid spacer based on boronic esters resulted in a perpendicular geometry of the phenyl boronic acid BODIPY (PBA-BODIPY) with respect to the GO plane, which enables only minor electronic GO-BODIPY interactions in the ground state. In this case, selective excitation of PBA-BODIPY was easily achieved, allowing to investigate the excited state interactions. A quantitative ultrafast energy transfer from PBA-BODIPY to GO was observed. Furthermore, due to the reversible dynamic nature of the covalent GO-PBA-BODIPY linkage, some PBA-BODIPY is free in solution and, hence, not quenched from GO. This resulted in a weak, but detectable fluorescence from the PBA-BODIPY that will allow to exploit GO-PBA-BODIPY for slow release and imaging purposes.
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Affiliation(s)
- Giacomo Reina
- CNRS: Centre National de la Recherche Scientifique, Immunologie, Immunopathologie et Chimie Thérapeutique, FRANCE
| | - Giovanni Mariano Beneventi
- Friedrich-Alexander-Universität Erlangen-Nürnberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Department of Chemistry and Pharmacy, GERMANY
| | - Ramandeep Kaur
- Friedrich-Alexander-Universität Erlangen-Nürnberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Department of Chemistry and Pharmacy, GERMANY
| | - Giacomo Biagiotti
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Alejandro Cadranel
- Friedrich-Alexander-Universität Erlangen-Nürnberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Department of Chemistry and Pharmacy, GERMANY
| | - Cécilia Ménard-Moyon
- CNRS: Centre National de la Recherche Scientifique, Immunology, Immunopathology and Therapeutic Chemistry, FRANCE
| | - Yuta Nishina
- Okayama Daigaku - Tsushima Campus: Okayama Daigaku, Research Core for Interdisciplinary Sciences, JAPAN
| | - Barbara Richichi
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Dirk M Guldi
- Friedrich Alexander University Erlangen Nuremberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg, Department of Chemistry and Pharmacy, GERMANY
| | - Alberto Bianco
- Immunopathologie et Chimie Thérapeutique, IBMC, 15 Rue René Descartes, 67084, Strasbourg, FRANCE
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Marcelli A, Patrizi B, Bonamore A, Boffi A, Becucci M, Foggi P. Exciplex Formation in Lipid-bound Escherichia coli Flavohemoglobin. Chemphyschem 2021; 22:1134-1140. [PMID: 33794073 DOI: 10.1002/cphc.202100019] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/30/2021] [Indexed: 11/10/2022]
Abstract
Flavohemoglobins have the particular capability of binding unsaturated and cyclopropanated fatty acids as free acids or phospholipids. Fatty acid binding to the ferric heme results in a weak but direct bonding interaction. Ferrous and ferric protein, in presence or absence of a bound lipid molecule, have been characterized by transient absorption spectroscopy. Measurements have been also carried out both on the ferrous deoxygenated and on the CO bound protein to investigate possible long-range interaction between the lipid acyl chain moiety and the ferrous heme. After excitation of the deoxygenated derivatives the relaxation process reveals a slow dynamics (350 ps) in lipid-bound protein but is not observed in the lipid-free protein. The latter feature and the presence of an extra contribution in the absorption spectrum, indicates that the interaction of iron heme with the acyl chain moiety occurs only in the excited electronic state and not in the ground electronic state. Data analysis highlights the formation of a charge-transfer complex in which the iron ion of the lipid-bound protein in the expanded electronic excited state, possibly represented by a high spin Fe III intermediate, is able to bind to the sixth coordination ligand placed at a distance of at 3.5 Å from the iron. A very small nanosecond geminate rebinding is observed for CO adduct in lipid-free but not in the lipid-bound protein. The presence of the lipid thus appears to inhibit the mobility of CO in the heme pocket.
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Affiliation(s)
- Agnese Marcelli
- European Laboratory for Non-Linear Spectroscopy (LENS), Via Nello Carrara, 1, 50019 Sesto Fiorentino, Florence), Italy
| | - Barbara Patrizi
- European Laboratory for Non-Linear Spectroscopy (LENS), Via Nello Carrara, 1, 50019 Sesto Fiorentino, Florence), Italy.,National Institute of Optics-National Research Council (INO-CNR), Via Madonna del Piano 10, 50019, Sesto Fiorentino (Florence), Italy
| | - Alessandra Bonamore
- Istituto Pasteur-Fondazione Cenci Bolognetti and Dipartimento di Scienze Biochimiche, Università "Sapienza" di Roma, P. Aldo Moro 5, 00185, Rome, Italy
| | - Alberto Boffi
- Istituto Pasteur-Fondazione Cenci Bolognetti and Dipartimento di Scienze Biochimiche, Università "Sapienza" di Roma, P. Aldo Moro 5, 00185, Rome, Italy
| | - Maurizio Becucci
- European Laboratory for Non-Linear Spectroscopy (LENS), Via Nello Carrara, 1, 50019 Sesto Fiorentino, Florence), Italy.,Department of Chemistry Ugo Schiff, University of Florence, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence), Italy
| | - Paolo Foggi
- European Laboratory for Non-Linear Spectroscopy (LENS), Via Nello Carrara, 1, 50019 Sesto Fiorentino, Florence), Italy.,National Institute of Optics-National Research Council (INO-CNR), Via Madonna del Piano 10, 50019, Sesto Fiorentino (Florence), Italy.,Department of Chemistry, University of Perugia, Via Elce di sotto 8, 06100, Perugia, Italy
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