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Lesniewicz A, Lewandowska-Andralojc A. Probing mechanism of Rhodamine B decolorization under homogeneous conditions via pH-controlled photocatalysis with anionic porphyrin. Sci Rep 2024; 14:22600. [PMID: 39349639 PMCID: PMC11442955 DOI: 10.1038/s41598-024-73586-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Accepted: 09/18/2024] [Indexed: 10/04/2024] Open
Abstract
Porphyrins are acknowledged for their efficacy as photosensitizers and show potential for the treatment of water contaminated with diverse dyes. This research emphasizes the use of meso-tetra(4-sulfonatophenyl)porphyrin (TPPS) as a photosensitizer for purifying water contaminated with rhodamine B. Investigations were conducted under homogeneous conditions using visible light irradiation, revealing the efficacy of the porphyrin in the decolorization of rhodamine B strongly depends on pH of the solution. This study demonstrated that within 120 min, the decolorization process rapidly removed about 95% of RhB at an initial pH of 3.0, while at pH 6.0, the removal rate was significantly lower, at only 12%. An extensive photophysical study of the TPPS was carried out at pH 6.0 and pH 3.0 including absorption and fluorescence spectra, fluorescence quantum yields, triplet absorption spectra, triplet lifetimes, triplet and singlet oxygen quantum yields in order to explain difference in the efficiency of RhB discoloration. A thorough investigation into mechanism revealed that neither reactive oxygen species nor singlet oxygen played a role in RhB decolorization within this system. Instead, the predominant route was found to be the electron transfer from photoexcited TPPS to RhB, followed by proton transfer at pH 3.0, leading to the generation of a colorless leuco form.
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Affiliation(s)
- Aleksandra Lesniewicz
- Faculty of Chemistry , Adam Mickiewicz University , Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland
| | - Anna Lewandowska-Andralojc
- Faculty of Chemistry , Adam Mickiewicz University , Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland.
- Center for Advanced Technologies , Adam Mickiewicz University , Uniwersytetu Poznanskiego 10, Poznan, 61-614, Poland.
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2
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Alsam AA. Comparative Investigation of Ultrafast Excited-State Electron Transfer in Both Polyfluorene-Graphene Carboxylate and Polyfluorene-DCB Interfaces. Molecules 2024; 29:634. [PMID: 38338379 PMCID: PMC10856661 DOI: 10.3390/molecules29030634] [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: 12/14/2023] [Revised: 01/15/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
The Photophysical properties, such as fluorescence quenching, and photoexcitation dynamics of bimolecular non-covalent systems consisting of cationic poly[(9,9-di(3,3'-N,N'-trimethyl-ammonium) propyl fluorenyl-2,7-diyl)-alt-co-(9,9-dioctyl-fluorenyl-2,7-diyl)] diiodide salt (PFN) and anionic graphene carboxylate (GC) have been discovered for the first time via steady-state and time-resolved femtosecond transient absorption (TA) spectroscopy with broadband capabilities. The steady-state fluorescence of PFN is quenched with high efficiency by the GC acceptor. Fluorescence lifetime measurements reveal that the quenching mechanism of PFN by GC is static. Here, the quenching mechanisms are well proven via the TA spectra of PFN/GC systems. For PFN/GC systems, the photo electron transfer (PET) and charge recombination (CR) processes are ultrafast (within a few tens of ps) compared to static interactions, whereas for PFN/1,4-dicyanobenzene DCB systems, the PET takes place in a few hundreds of ps (217.50 ps), suggesting a diffusion-controlled PET process. In the latter case, the PFN+•-DCB-• radical ion pairs as the result of the PET from the PFN to DCB are clearly resolved, and they are long-lived. The slow CR process (in 30 ns time scales) suggests that PFN+• and DCB-• may already form separated radical ion pairs through the charge separation (CS) process, which recombine back to the initial state with a characteristic time constant of 30 ns. The advantage of the present positively charged polyfluorene used in this work is the control over the electrostatic interactions and electron transfers in non-covalent polyfluorene/quencher systems in DMSO solution.
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Affiliation(s)
- Amani A Alsam
- Department of Physical Science, College of Science, Jazan University, P.O. Box. 114, Jazan 45142, Saudi Arabia
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3
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Lewandowska-Andralojc A, Gacka E, Pedzinski T, Burdzinski G, Lindner A, O'Brien JM, Senge MO, Siklitskaya A, Kubas A, Marciniak B, Walkowiak-Kulikowska J. Understanding structure-properties relationships of porphyrin linked to graphene oxide through π-π-stacking or covalent amide bonds. Sci Rep 2022; 12:13420. [PMID: 35927398 PMCID: PMC9352710 DOI: 10.1038/s41598-022-16931-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/18/2022] [Indexed: 11/09/2022] Open
Abstract
Two graphene oxide nanoassemblies using 5-(4-(aminophenyl)-10,15,20-triphenylporphyrin (TPPNH2) were fabricated by two synthetic methods: covalent (GO-CONHTPP) and noncovalent bonding. GO-CONHTPP was achieved through amide formation at the periphery of GO sheets and the hybrid material was fully characterized by FTIR, XPS, Raman spectroscopy, and SEM. Spectroscopic measurements together with theoretical calculations demonstrated that assembling TPPNH2 on the GO surface in DMF-H2O (1:2, v/v) via non-covalent interactions causes changes in the absorption spectra of porphyrin, as well as efficient quenching of its emission. Interestingly, covalent binding to GO does not affect notably neither the porphyrin absorption nor its fluorescence. Theoretical calculations indicates that close proximity and π-π-stacking of the porphyrin molecule with the GO sheet is possible only for the non-covalent functionalization. Femtosecond pump-probe experiments revealed that only the non-covalent assembly of TPPNH2 and GO enhances the efficiency of the photoinduced electron transfer from porphyrin to GO. In contrast to the non-covalent hybrid, the covalent GO-CONHTPP material can generate singlet oxygen with quantum yields efficiency (ΦΔ = 0.20) comparable to that of free TPPNH2 (ΦΔ = 0.26), indicating the possible use of covalent hybrid materials in photodynamic/photothermal therapy. The spectroscopic studies combined with detailed quantum-chemical analysis provide invaluable information that can guide the fabrication of hybrid materials with desired properties for specific applications.
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Affiliation(s)
- Anna Lewandowska-Andralojc
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland. .,Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614, Poznan, Poland.
| | - Ewelina Gacka
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland.,Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614, Poznan, Poland
| | - Tomasz Pedzinski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland.,Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614, Poznan, Poland
| | - Gotard Burdzinski
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznanskiego 2, 61-614, Poznan, Poland
| | - Aleksandra Lindner
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Jessica M O'Brien
- School of Chemistry, Chair of Organic Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Mathias O Senge
- School of Chemistry, Chair of Organic Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland.,Institute for Advanced Study (TUM-IAS), Focus Group-Molecular and Interfacial Engineering of Organic Nanosystems, Technical University of Munich, 85748, Garching, Germany
| | - Aleksandra Siklitskaya
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Adam Kubas
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Bronislaw Marciniak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland.,Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614, Poznan, Poland
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4
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Porphyrin Functionalized Laser-Induced Graphene and Porous WO3 Assembled Effective Z-Scheme Photocatalyst for Promoted Visible-Light-Driven Degradation of Ciprofloxacin. Catal Letters 2022. [DOI: 10.1007/s10562-021-03786-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Kuznetsov AE. Review of research of nanocomposites based on graphene quantum dots. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2019-0135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Graphene quantum dots (GQDs) belong to the vast and versatile family of carbon nanomaterials. Their unique position amongst versatile carbon nanoparticles (NPs) originates from the properties of quantum confinement and edge effects. GQDs are similar to conventional semiconductor QDs due to their tunable band gaps and high photoluminescence activity. However, GQDs have superior characteristics due to their excellent biocompatibility, low toxicity, good water dispersibility, large optical absorptivity, high fluorescence activity and photostability. These properties have generated significant interest in GQDs applications in various fields: nanosensor fabrication, drug delivery, photocatalysis, photovoltaics, and photodynamic therapy. Numerous GQD-based nanocomposites/nanohybrides have been synthesized and/or studied computationally. This review focuses on recent computational studies of various GQD-based nanocomposites/nanohybrides and systems which can be related to them.
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Affiliation(s)
- Aleksey E. Kuznetsov
- Department of Chemistry , Universidad Tecnica Federico Santa Maria , Santiago , Chile
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6
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Sangam S, Jindal S, Agarwal A, Banerjee BD, Prasad P, Mukherjee M. Graphene quantum dots-porphyrins/phthalocyanines multifunctional hybrid systems: from interfacial dialogue to applications. Biomater Sci 2022; 10:1647-1679. [DOI: 10.1039/d2bm00016d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Engineered well-ordered hybrid nanomaterials are at a symbolically pivotal point, just ahead of a long-anticipated human race transformation. Incorporating newer carbon nanomaterials like graphene quantum dots (GQDs) with tetrapyrrolic porphyrins...
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7
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Asad M, Wang YJ, Wang S, Dong QG, Li LK, Majeed S, Wang QY, Zang SQ. Hydrazone connected stable luminescent covalent-organic polymer for ultrafast detection of nitro-explosives. RSC Adv 2021; 11:39270-39277. [PMID: 35492474 PMCID: PMC9044423 DOI: 10.1039/d1ra08009a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 11/24/2021] [Indexed: 12/20/2022] Open
Abstract
Developing promising luminescent probes for the selective sensing of nitro-explosives remains a challenging issue. Porous luminescent covalent–organic polymers are one of the excellent sensing probes for trace hazardous materials. Herein, fluorescent monomers 1,1,2,2-tetrakis(4-formyl-(1,1′-biphenyl))ethane (TFBE) and 1,3,5-benzenetricarboxylic acid trihydrazide (BTCH) were selected to build a novel hydrazone connected stable luminescent covalent–organic polymer (H-COP) of high stability by typical Schiff-base reaction. The N2 sorption study, BET surface area analysis, and TGA profile indicate the porosity and stability of this H-COP material. Such properties of the H-COP material enable a unique sensing platform for nitro-explosives with great sensitivity (Ksv ∼ 106 M) and selectivity up to μM. This polymer material shows attractive selectivity and sensitivity towards phenolic nitro-explosives and other common explosives among earlier reported COP-based sensors. A novel H-COP was synthesized through Schiff-base condensation reaction, which shows high sensitivity (Ksv ∼ 106 M−1) and selectivity (μM level) towards nitro-explosives.![]()
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Affiliation(s)
- Muhammad Asad
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Ya-Jie Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Shan Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Qing-Guo Dong
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Lin-Ke Li
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Saadat Majeed
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 60800 Pakistan
| | - Qian-You Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Shuang-Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 P. R. China
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8
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9
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Hussain M, El-Zohry AM, Hou Y, Toffoletti A, Zhao J, Barbon A, Mohammed OF. Spin-Orbit Charge-Transfer Intersystem Crossing of Compact Naphthalenediimide-Carbazole Electron-Donor-Acceptor Triads. J Phys Chem B 2021; 125:10813-10831. [PMID: 34542290 DOI: 10.1021/acs.jpcb.1c06498] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Compact electron donor-acceptor triads based on carbazole (Cz) and naphthalenediimide (NDI) were prepared to study the spin-orbit charge-transfer intersystem crossing (SOCT-ISC). By variation of the molecular conformation and electron-donating ability of the carbazole moieties, the electronic coupling between the two units was tuned, and as a result charge-transfer (CT) absorption bands with different magnitudes were observed (ε = 4000-18 000 M-1 cm-1). Interestingly, the triads with NDI attached at the 3-C position or with a phenyl spacer at the N position of the Cz moiety, thermally activated delayed fluorescence (TADF) was observed. Femtosecond transient absorption (fs-TA) spectroscopy indicated fast electron transfer (0.8-1.5 ps) from the Cz to NDI unit, followed by population of the triplet state (150-600 ps). Long-lived triplet states (up to τT = 45-50 μs) were observed for the triads. The solvent-polarity-dependent singlet-oxygen quantum yield (ΦΔ) is 0-26%. Time-resolved electron paramagnetic resonance (TREPR) spectral study of TADF molecules indicated the presence of the 3CT state for NDI-Cz-Ph (zero-field-splitting parameter D = 21 G) and an 3LE state for NDI-Ph-Cz (D = 586 G). The triads were used as triplet photosensitizers in triplet-triplet annihilation upconversion by excitation into the CT absorption band; the upconversion quantum yield was ΦUC = 8.2%, and there was a large anti-Stokes shift of 0.55 eV. Spatially confined photoexcitation is achieved with the upconversion using focusing laser beam excitation, and not the normally used collimated laser beam, i.e., the upconversion was only observed at the focal point of the laser beam. Photo-driven intermolecular electron transfer was demonstrated with reversible formation of the NDI-• radical anion in the presence of the sacrificial electron donor triethanolamine.
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Affiliation(s)
- Mushraf Hussain
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China.,NUIST Reading Academy, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, P. R. China
| | - Ahmed M El-Zohry
- KAUST Solar Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.,Department of Physics - AlbaNova Universitetscentrum, Stockholm University, SE-10691 Stockholm, Sweden
| | - Yuqi Hou
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Antonio Toffoletti
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo, 1, 35131 Padova, Italy
| | - Jianzhang Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Antonio Barbon
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo, 1, 35131 Padova, Italy
| | - Omar F Mohammed
- KAUST Solar Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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10
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Monteiro AR, Neves MGPMS, Trindade T. Functionalization of Graphene Oxide with Porphyrins: Synthetic Routes and Biological Applications. Chempluschem 2021; 85:1857-1880. [PMID: 32845088 DOI: 10.1002/cplu.202000455] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/27/2020] [Indexed: 12/19/2022]
Abstract
Among the available carbon nanomaterials, graphene oxide (GO) has been widely studied because of the possibility of anchoring different chemical species for a large number of applications, including those requiring water-compatible systems. This Review summarizes the state-of-the-art of synthetic routes used to functionalize GO, such as those involving multiple covalent and non-covalent bonds to organic molecules, functionalization with nanoparticles and doping. As a recent development in this field, special focus is given to the formation of nanocomposites comprising GO and porphyrins, and their characterization through spectroscopic techniques (such as UV-Vis, fluorescence, Raman spectroscopy), among others. The potential of such hybrid systems in targeted biological applications is also discussed, namely for cancer therapies relying on photodynamic and photothermal therapies and for the inhibition of telomerase enzyme. Lastly, some promising alternative materials to GO are presented to overcome current challenges of GO-based research and to inspire future research directions in this field.
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Affiliation(s)
- Ana R Monteiro
- Department of Chemistry, University of Aveiro, CICECO - Aveiro Institute of Materials, 3810-193, Aveiro, Portugal.,Department of Chemistry, University of Aveiro, LAQV - Requimte, 3810-193, Aveiro, Portugal
| | - M Graça P M S Neves
- Department of Chemistry, University of Aveiro, LAQV - Requimte, 3810-193, Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry, University of Aveiro, CICECO - Aveiro Institute of Materials, 3810-193, Aveiro, Portugal
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11
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Liu K, Li J, Qi H, Hambsch M, Rawle J, Vázquez AR, Nia AS, Pashkin A, Schneider H, Polozij M, Heine T, Helm M, Mannsfeld SCB, Kaiser U, Dong R, Feng X. A Two‐Dimensional Polyimide‐Graphene Heterostructure with Ultra‐fast Interlayer Charge Transfer. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kejun Liu
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
- Leibniz-Institut für Polymerforschung Dresden e.V. (IPF) 01069 Dresden Germany
| | - Jiang Li
- Institute of Ion Beam Physics and Materials Research Helmholtz-Zentrum Dresden-Rossendorf 01328 Dresden Germany
| | - Haoyuan Qi
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
- Central Facility of Electron Microscopy Electron Microscopy Group of Materials Science Universität Ulm 89081 Ulm Germany
| | - Mike Hambsch
- Center for Advancing Electronics Dresden and Faculty of Electrical and Computer Engineering Technische Universität Dresden 01062 Dresden Germany
| | | | - Adrián Romaní Vázquez
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
| | - Ali Shaygan Nia
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
| | - Alexej Pashkin
- Institute of Ion Beam Physics and Materials Research Helmholtz-Zentrum Dresden-Rossendorf 01328 Dresden Germany
| | - Harald Schneider
- Institute of Ion Beam Physics and Materials Research Helmholtz-Zentrum Dresden-Rossendorf 01328 Dresden Germany
| | - Mirosllav Polozij
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
| | - Thomas Heine
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
| | - Manfred Helm
- Institute of Ion Beam Physics and Materials Research Helmholtz-Zentrum Dresden-Rossendorf 01328 Dresden Germany
| | - Stefan C. B. Mannsfeld
- Center for Advancing Electronics Dresden and Faculty of Electrical and Computer Engineering Technische Universität Dresden 01062 Dresden Germany
| | - Ute Kaiser
- Central Facility of Electron Microscopy Electron Microscopy Group of Materials Science Universität Ulm 89081 Ulm Germany
| | - Renhao Dong
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
| | - Xinliang Feng
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden Technische Universität Dresden 01062 Dresden Germany
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12
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Liu K, Li J, Qi H, Hambsch M, Rawle J, Vázquez AR, Nia AS, Pashkin A, Schneider H, Polozij M, Heine T, Helm M, Mannsfeld SCB, Kaiser U, Dong R, Feng X. A Two-Dimensional Polyimide-Graphene Heterostructure with Ultra-fast Interlayer Charge Transfer. Angew Chem Int Ed Engl 2021; 60:13859-13864. [PMID: 33835643 PMCID: PMC8252803 DOI: 10.1002/anie.202102984] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Indexed: 12/22/2022]
Abstract
Two-dimensional polymers (2DPs) are a class of atomically/molecularly thin crystalline organic 2D materials. They are intriguing candidates for the development of unprecedented organic-inorganic 2D van der Waals heterostructures (vdWHs) with exotic physicochemical properties. In this work, we demonstrate the on-water surface synthesis of large-area (cm2 ), monolayer 2D polyimide (2DPI) with 3.1-nm lattice. Such 2DPI comprises metal-free porphyrin and perylene units linked by imide bonds. We further achieve a scalable synthesis of 2DPI-graphene (2DPI-G) vdWHs via a face-to-face co-assembly of graphene and 2DPI on the water surface. Remarkably, femtosecond transient absorption spectroscopy reveals an ultra-fast interlayer charge transfer (ca. 60 fs) in the resultant 2DPI-G vdWH upon protonation by acid, which is equivalent to that of the fastest reports among inorganic 2D vdWHs. Such large interlayer electronic coupling is ascribed to the interlayer cation-π interaction between 2DP and graphene.
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Affiliation(s)
- Kejun Liu
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
- Leibniz-Institut für Polymerforschung Dresden e.V. (IPF)01069DresdenGermany
| | - Jiang Li
- Institute of Ion Beam Physics and Materials ResearchHelmholtz-Zentrum Dresden-Rossendorf01328DresdenGermany
| | - Haoyuan Qi
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
- Central Facility of Electron MicroscopyElectron Microscopy Group of Materials ScienceUniversität Ulm89081UlmGermany
| | - Mike Hambsch
- Center for Advancing Electronics Dresden and Faculty of Electrical and Computer EngineeringTechnische Universität Dresden01062DresdenGermany
| | | | - Adrián Romaní Vázquez
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
| | - Ali Shaygan Nia
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
| | - Alexej Pashkin
- Institute of Ion Beam Physics and Materials ResearchHelmholtz-Zentrum Dresden-Rossendorf01328DresdenGermany
| | - Harald Schneider
- Institute of Ion Beam Physics and Materials ResearchHelmholtz-Zentrum Dresden-Rossendorf01328DresdenGermany
| | - Mirosllav Polozij
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
| | - Thomas Heine
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
| | - Manfred Helm
- Institute of Ion Beam Physics and Materials ResearchHelmholtz-Zentrum Dresden-Rossendorf01328DresdenGermany
| | - Stefan C. B. Mannsfeld
- Center for Advancing Electronics Dresden and Faculty of Electrical and Computer EngineeringTechnische Universität Dresden01062DresdenGermany
| | - Ute Kaiser
- Central Facility of Electron MicroscopyElectron Microscopy Group of Materials ScienceUniversität Ulm89081UlmGermany
| | - Renhao Dong
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
| | - Xinliang Feng
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics DresdenTechnische Universität Dresden01062DresdenGermany
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13
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Larowska D, O’Brien JM, Senge MO, Burdzinski G, Marciniak B, Lewandowska-Andralojc A. Graphene Oxide Functionalized with Cationic Porphyrins as Materials for the Photodegradation of Rhodamine B. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:15769-15780. [PMID: 33133329 PMCID: PMC7590516 DOI: 10.1021/acs.jpcc.0c03907] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Two noncovalent nanohybrids between cationic porphyrin (free-base TMPyP and zinc(II) ZnTMPyP) bearing cationic (N-methylpyridyl) groups and graphene oxide (GO) were constructed with the aim of generating a photocatalyst active for rhodamine B (RhB) degradation. The obtained materials were thoroughly characterized by steady-state and time-resolved absorption and emission methods, which indicated that metalation of the porphyrin with Zn(II) increases the affinity of the porphyrin toward the GO surface. Photocurrent experiment together with femtosecond transient absorption spectroscopy clearly showed the existence of electron transfer from the photoexcited porphyrin to GO. Both hybrid materials demonstrated higher photocatalytic activity toward RhB degradation as compared to GO; however, ZnTMPyP-GO exhibited more efficient performance (19% of RhB decomposition after 2 h of irradiation). Our data indicate that the presence of Zn(II) in the core of the porphyrin can promote charge separation in the ZnTMPyP-GO composites. The higher degradation rate seen with ZnTMPyP-GO as compared to the TMPyP-GO assemblies highlights the beneficial role of Zn(II)-metalation of the porphyrin ring.
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Affiliation(s)
- Daria Larowska
- Faculty
of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
| | - Jessica M. O’Brien
- School
of Chemistry, Trinity Biomedical Sciences Institute, Trinity College
Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Mathias O. Senge
- School
of Chemistry, Trinity Biomedical Sciences Institute, Trinity College
Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Gotard Burdzinski
- Faculty
of Physics, Adam Mickiewicz University, Uniwersytetu Poznanskiego 2, 61-614 Poznan, Poland
| | - Bronisław Marciniak
- Faculty
of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Center
for Advanced Technology, Adam Mickiewicz
University, Uniwersytetu
Poznanskiego 10, 61-614 Poznan, Poland
| | - Anna Lewandowska-Andralojc
- Faculty
of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Center
for Advanced Technology, Adam Mickiewicz
University, Uniwersytetu
Poznanskiego 10, 61-614 Poznan, Poland
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14
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Zhang Q, Pang R, Luo T, Van Hove MA. Controlling the Rotational Barrier of Single Porphyrin Rotors on Surfaces. J Phys Chem B 2020; 124:953-960. [PMID: 31958369 DOI: 10.1021/acs.jpcb.9b09986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Artificial molecular machines have played an indispensable role in many chemical and biological processes in recent decades. Among all kinds of molecular machines, molecular rotor systems have attracted increasing attention. In this work, we used density functional theory (DFT) calculations to investigate the rotational behaviors of on-surface molecular rotors based on porphyrin, which is a species of molecule with wide biological and chemical compatibilities. Moreover, our comparative studies demonstrate that macrocycle metalation, supporting substrate replacement, and functional group substitutions can effectively modify the rotational barrier of porphyrin rotors. We believe that these modification methods can further guide the path to achieve highly controllable on-surface molecular rotor systems in future applications.
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Affiliation(s)
- Qiushi Zhang
- Institute of Computational and Theoretical Studies & Department of Physics , Hong Kong Baptist University , Hong Kong SAR , China.,Department of Aerospace and Mechanical Engineering , University of Notre Dame , Notre Dame 46556 , Indiana , United States
| | - Rui Pang
- International Laboratory for Quantum Functional Materials of Henan and School of Physics and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Tengfei Luo
- Department of Aerospace and Mechanical Engineering , University of Notre Dame , Notre Dame 46556 , Indiana , United States
| | - Michel A Van Hove
- Institute of Computational and Theoretical Studies & Department of Physics , Hong Kong Baptist University , Hong Kong SAR , China
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15
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Gacka E, Burdzinski G, Marciniak B, Kubas A, Lewandowska-Andralojc A. Interaction of light with a non-covalent zinc porphyrin-graphene oxide nanohybrid. Phys Chem Chem Phys 2020; 22:13456-13466. [PMID: 32519730 DOI: 10.1039/d0cp02545c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present study explores the influence of graphene oxide (GO) on deactivation pathways of the excited states of zinc 5,10,15,20-tetrakis(4-(hydroxyphenyl))porphyrin (ZnTPPH). The interaction of light with free ZnTPPH molecules and with ZnTPPH molecules adsorbed on graphene oxide sheets was probed via UV-vis spectroscopy, fluorescence spectroscopy, femtosecond pump-probe technique and nanosecond flash photolysis. Formation of the ground-state ZnTPPH-GO complex in solution was monitored by the red-shift of the porphyrin Soret absorption band. It was found that Stern-Volmer fluorescence quenching can be described in terms of two different quenching regimes depending on the GO concentration. In addition, our comprehensive analysis of the steady-state and time-resolved emission experiments led to the conclusion that the observed quenching was entirely attributable to a static mechanism. Laser flash photolysis showed that the triplet lifetime of the ZnTPPH increased in the presence of GO from 174 μs to 292 μs, which is related to the decrease in the rate constant of a radiationless decay mechanism involving rotation of the peripheral hydroxyphenyl rings of the porphyrin. Femtosecond transient absorption spectroscopy demonstrated the presence of a fast photoinduced electron transfer from the singlet excited state of ZnTPPH to the GO sheets, as indicated by the formation of a porphyrin radical cation. Quantum chemical calculations were used to gain deeper insights into the nature of the electronically excited states in the free ZnTPPH as well as in the ZnTPPH-GO complex.
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Affiliation(s)
- Ewelina Gacka
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland.
| | - Gotard Burdzinski
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznanskiego 2, 61-614 Poznan, Poland
| | - Bronisław Marciniak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland. and Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Adam Kubas
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Anna Lewandowska-Andralojc
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland. and Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
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16
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Qin JH, Huang YD, Shi MY, Wang HR, Han ML, Yang XG, Li FF, Ma LF. Aqueous-phase detection of antibiotics and nitroaromatic explosives by an alkali-resistant Zn-MOF directed by an ionic liquid. RSC Adv 2020; 10:1439-1446. [PMID: 35494702 PMCID: PMC9047407 DOI: 10.1039/c9ra08733h] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 12/15/2019] [Indexed: 01/05/2023] Open
Abstract
An alkali-resistant 3D anionic Zn-MOF directed by [BMI]Br ionic liquid has been synthesized for aqueous-phase detection of antibiotics and nitroaromatic explosives.
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Affiliation(s)
- Jian-Hua Qin
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Ya-Dan Huang
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Ming-Yu Shi
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Hua-Rui Wang
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Min-Le Han
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Xiao-Gang Yang
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Fei-Fei Li
- College of Chemistry and Chemical Engineering
- Henan Polytechnic University
- Jiaozuo
- PR. China
| | - Lu-Fang Ma
- College of Chemistry and Chemical Engineering
- Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
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17
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Mehdipour H, Smith BA, Rezakhani AT, Tafreshi SS, de Leeuw NH, Prezhdo OV, Moshfegh AZ, Akimov AV. Dependence of electron transfer dynamics on the number of graphene layers in π-stacked 2D materials: insights from ab initio nonadiabatic molecular dynamics. Phys Chem Chem Phys 2019; 21:23198-23208. [PMID: 31612886 DOI: 10.1039/c9cp04100a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Recent time-resolved transient absorption studies demonstrated that the rate of photoinduced interfacial charge transfer (CT) from Zn-phthalocyanine (ZnPc) to single-layer graphene (SLG) is faster than to double-layer graphene (DLG), in contrast to the expectation from Fermi's golden rule. We present the first time-domain non-adiabatic molecular dynamics (NA-MD) study of the electron injection process from photoexcited ZnPc molecules into SLG and DLG substrates. Our calculations suggest that CT occurs faster in the ZnPc/SLG system than in the ZnPc/DLG system, with 580 fs and 810 fs being the fastest components of the observed CT timescales, respectively. The computed timescales are in close agreement with those reported in the experiment. The computed CT timescales are determined largely by the magnitudes of the non-adiabatic couplings (NAC), which we find to be 4 meV and 2 meV, for the ZnPc/SLG and ZnPc/DLG systems, respectively. The transitions are driven mainly by the ZnPc out-of-plane bending mode at 1100 cm-1 and an overtone of fundamental modes in graphene at 2450 cm-1. We find that dephasing occurs on the timescale of 20 fs and is similar in both systems, so decoherence does not notably change the qualitative trends in the CT timescales. We highlight the importance of proper energy level alignment for capturing the qualitative trends in the CT dynamics observed in experiment. In addition, we illustrate several methodological points that are important for accurately modeling nonadiabatic dynamics in the ZnPc/FLG systems, such as the choice of surface hopping methodology, the use of phase corrections, NAC scaling, and the inclusion of Hubbard terms in the density functional and molecular dynamics calculations.
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Affiliation(s)
- Hamid Mehdipour
- Department of Physics, Sharif University of Technology, Tehran, Iran.
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18
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Ussia M, Urso M, Miritello M, Bruno E, Curcuruto G, Vitalini D, Condorelli GG, Cantarella M, Privitera V, Carroccio SC. Hybrid nickel-free graphene/porphyrin rings for photodegradation of emerging pollutants in water. RSC Adv 2019; 9:30182-30194. [PMID: 35530201 PMCID: PMC9072085 DOI: 10.1039/c9ra06328e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 09/18/2019] [Indexed: 12/05/2022] Open
Abstract
A novel hybrid photoactive material based on graphene foam (G) coupled with porphyrin-based polymers (Porph rings) was formulated by using a time-saving procedure to remove nickel from the final device. Specifically, Porph rings were spin coated onto the G platform with the double function of a visible-light photocatalyst and protective agent during nickel etching. The characterization of G-Porph rings was assessed by Scanning Electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL). The novel material showed photocatalytic ability in degrading different classes of pollutants such as the herbicide 2,4 dichlorophenoxyacetic acid (2,4-D), polyethylene glycol (PEG) as an ingredient of care and health products, and also the methylene blue (MB) dye. UV-Vis spectroscopy, total organic carbon (TOC) and soft mass spectrometry techniques were used to monitor the photocatalytic process. The best performance in terms of photocatalytic efficiency was exhibited versus PEG and MB degradation. Furthermore, to determine the individual contribution of Reactive Oxygen Species (ROS) produced, free radical and hole scavenging tests were also carried out. Finally, a detailed map of the photocatalytic degradation mechanisms was proposed, reporting also the calculation of Porph rings' Highest Occupied Molecular Orbital (HOMO) and Lowest Occupied Molecular Orbital (LUMO) energy level values.
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Affiliation(s)
- Martina Ussia
- University of Catania, Department of Physics and Astronomy "Ettore Majorana" Via Santa Sofia 64 95123 Catania Italy
- CNR-IMM Catania Via Santa Sofia 64 95123, Catania Italy
| | - Mario Urso
- University of Catania, Department of Physics and Astronomy "Ettore Majorana" Via Santa Sofia 64 95123 Catania Italy
- CNR-IMM Catania Via Santa Sofia 64 95123, Catania Italy
| | | | - Elena Bruno
- University of Catania, Department of Physics and Astronomy "Ettore Majorana" Via Santa Sofia 64 95123 Catania Italy
- CNR-IMM Catania Via Santa Sofia 64 95123, Catania Italy
| | | | | | - Guglielmo G Condorelli
- University of Catania, Department of Chemistry and INSTM UdR Catania Viale Andrea Doria 6 95125 Catania Italy
| | | | | | - Sabrina C Carroccio
- CNR-IMM Catania Via Santa Sofia 64 95123, Catania Italy
- CNR-IPCB Via Paolo Gaifami 18 95126, Catania Italy
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19
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Abdelhameed M, Aly S, Maity P, Manni E, Mohammed OF, Charpentier PA. Impact of the chemical nature and position of spacers on controlling the optical properties of silicon quantum dots. Phys Chem Chem Phys 2019; 21:17096-17108. [PMID: 31339151 DOI: 10.1039/c9cp03537k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The unique properties of silicon quantum dots (SQDs), including intriguing optical properties, biocompatibility, and ease of surface modification have made them excellent candidates for a variety of optoelectronic and biomedical applications. Unfortunately, the low quantum efficiency (QE), unstable photoluminescence, and poor colloidal stability of SQDs have hindered their wide applicability. Herein, we report the synthesis of four assemblies of SQDs (1.6-1.8 nm average diameter) functionalized with fluorescein dye through isothiocyanate (-NCS) and carboxylate (COO-) spacers in the benzene ring of the fluorescein to produce the dyads Am-SQD-Fl, DiAm-SQD-Fl, urea-SQD-Fl, and SQD-Fl. The photophysical measurements showed that the spacer played a key role in directing and controlling the optical properties of SQDs dyads, with the isothiocyanate spacer leading to a significant improvement in the QE of the dyad systems up to 65% and extending their photostability for at least one year. The interactions between the SQDs and fluorescein in the dyads Am-SQD-Fl, DiAm-SQD-Fl, and SQD-Fl were found to mainly proceed through photoinduced electron transfer at different rates, while energy transfer was confirmed to be the predominant process in the dyad urea-SQD-Fl. To demonstrate the suitability of the functionalized SQDs for bioimaging applications, the water-soluble dyads were examined for fluorescence imaging of human bone cancerous U2OS cells.
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Affiliation(s)
- Mohammed Abdelhameed
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada.
| | - Shawkat Aly
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada.
| | - Partha Maity
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Emad Manni
- Department of Biochemistry, Western University, London, Ontario N6A 5B9, Canada
| | - Omar F Mohammed
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Paul A Charpentier
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada.
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20
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Wang C, Fu H, Wang P, Wang C. Highly sensitive and selective detect of
p
‐arsanilic acid with a new water‐stable europium metal–organic framework. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chao‐Yang Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation/Beijing Advanced Innovation Centre for Future Urban DesignBeijing University of Civil Engineering and Architecture Beijing 100044 China
| | - Huifen Fu
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation/Beijing Advanced Innovation Centre for Future Urban DesignBeijing University of Civil Engineering and Architecture Beijing 100044 China
| | - Peng Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation/Beijing Advanced Innovation Centre for Future Urban DesignBeijing University of Civil Engineering and Architecture Beijing 100044 China
| | - Chong‐Chen Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation/Beijing Advanced Innovation Centre for Future Urban DesignBeijing University of Civil Engineering and Architecture Beijing 100044 China
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21
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Larowska D, Wojcik A, Mazurkiewicz-Pawlicka M, Malolepszy A, Stobiński L, Marciniak B, Lewandowska-Andralojc A. Cationic Porphyrin-Graphene Oxide Hybrid: Donor-Acceptor Composite for Efficient Photoinduced Electron Transfer. Chemphyschem 2019; 20:1054-1066. [PMID: 30839147 DOI: 10.1002/cphc.201900040] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 03/04/2019] [Indexed: 11/09/2022]
Abstract
Non-covalent nanohybrids composed of cationic 5,10,15,20-tetra(4-trimethylammoniophenyl)porphyrin tetra(p-toluenesulfonate) (TMAP) and the graphene oxide sheets were prepared under two pH values (6.2 vs. 1.8). The TMAP molecule was positively charged, regardless of the pH value during preparation. However, protonation of the imino nitrogens increased the overall charge of the porphyrin molecule from +4 to +6 (TMAP4+ and TMAP6+ ). It was found that at acidic pH, interaction of TMAP6+ with GO was largely suppressed. On the other hand, results of FTIR, Raman spectroscopy, thermogravimetric analysis, atomic force microscopy (AFM) and elemental analysis confirmed effective non-covalent functionalization of graphene oxide with cationic porphyrin at pH 6.2. The TMAP4+ -GO hybrids exhibited well defined structure with a monolayer of TMAP4+ on the GO sheets as confirmed by AFM. Formation of the ground-state TMAP4+ -GO complex in solution was monitored by the red-shift of the porphyrin Soret absorption band. This ground-state interaction between TMAP4+ and GO is responsible for the static quenching of the porphyrin emission. Fluorescence was not detected for the nanohybrid which indicated that a very fast deactivation process had to take place. Ultrafast time-resolved transient absorption spectroscopy clearly demonstrated the occurrence of electron transfer from the photoexcited TMAP4+ singlet state to GO sheets, as proven by the formation of a porphyrin radical cation.
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Affiliation(s)
- Daria Larowska
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, Poznan, 61-614, Poland
| | - Aleksandra Wojcik
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Marta Mazurkiewicz-Pawlicka
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645, Warsaw, Poland
| | - Artur Malolepszy
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645, Warsaw, Poland
| | - Leszek Stobiński
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645, Warsaw, Poland
| | - Bronislaw Marciniak
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, Poznan, 61-614, Poland
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22
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Monteiro AR, Ramos CIV, Fateixa S, Moura NMM, Neves MGPMS, Trindade T. Hybrids Based on Graphene Oxide and Porphyrin as Tools for Detection and Stabilization of DNA G-Quadruplexes. ACS OMEGA 2018; 3:11184-11191. [PMID: 31459228 PMCID: PMC6645567 DOI: 10.1021/acsomega.8b01366] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/27/2018] [Indexed: 06/10/2023]
Abstract
Telomerase inhibition has been an important strategy in cancer therapies, but for which effective drugs are still required. Here, noncovalent hybrid nanoplatforms containing the tetracationic 5,10,15,20-tetrakis(1-methyl-pyridinium-4-yl)porphyrin (TMPyP) and graphene oxide (GO) were prepared for promoting telomerase inhibition through the selective detection and stabilization of DNA guanine-quadruplex (G-Q) structures. Upon binding TMPyP to the GO sheets, the typical absorption bands of porphyrin have been red-shifted and the fluorescence emission was quenched. Raman mapping was used for the first time to provide new insights into the role of the electrostatic and π-π stacking interactions in the formation of such hybrids. The selective recovery of fluorescence observed during the titration of TMPyP@GO with G-Q, resembles a selective "turn-off-on" fluorescence sensor for the detection of G-Q, paving the way for a new class of antitumor drugs.
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Affiliation(s)
- Ana R. Monteiro
- QOPNA and CICECO-Aveiro Institute
of Materials, Department of Chemistry, University
of Aveiro, 3810-193 Aveiro, Portugal
| | - Catarina I. V. Ramos
- QOPNA and CICECO-Aveiro Institute
of Materials, Department of Chemistry, University
of Aveiro, 3810-193 Aveiro, Portugal
| | - Sara Fateixa
- QOPNA and CICECO-Aveiro Institute
of Materials, Department of Chemistry, University
of Aveiro, 3810-193 Aveiro, Portugal
| | - Nuno M. M. Moura
- QOPNA and CICECO-Aveiro Institute
of Materials, Department of Chemistry, University
of Aveiro, 3810-193 Aveiro, Portugal
| | - Maria G. P. M. S. Neves
- QOPNA and CICECO-Aveiro Institute
of Materials, Department of Chemistry, University
of Aveiro, 3810-193 Aveiro, Portugal
| | - Tito Trindade
- QOPNA and CICECO-Aveiro Institute
of Materials, Department of Chemistry, University
of Aveiro, 3810-193 Aveiro, Portugal
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23
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Oligonucleotide-modulated photocurrent enhancement of a tetracationic porphyrin for label-free homogeneous photoelectrochemical biosensing. Biosens Bioelectron 2018; 121:90-95. [PMID: 30199713 DOI: 10.1016/j.bios.2018.08.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 08/29/2018] [Indexed: 11/22/2022]
Abstract
This work reports the first demonstration of an oligonucleotide-modulated label-free homogeneous photoelectrochemical (PEC) biosensing platform based on the adsorption of tetracationic porphyrin (denoted as TMPyP here) onto 1-naphthalenesulfonate anion (NS-)-grafted indium tin oxide electrode (denoted as TMPyP-NS--ITO), which generates a stable and rapid photocurrent response. We found that when NS--ITO electrode was subjected to single-stranded oligonucleotide (ssON) before TMPyP adsorption, a remarkable enhancement of photocurrent intensity was observed from the resulted TMPyP-ssON-NS--ITO electrode with high specificity towards oligonucleotide. A series of investigations were carried out to understand the mechanism of this oligonucleotide-modulated photocurrent enhancement phenomenon. Moreover, the studies of this robust photocurrent enhancement mechanism was successfully extended to develop a signal-on homogeneous PEC biosensing platform for, as a proof-of-concept, label-free M.SssI methyltransferase activity analysis through a judiciously and compatibly engineered signal transduction strategy consisted of hairpin-shaped oligonucleotide probe, restriction endonuclease HpaII, and Exonuclease I. The rationally designed homogeneous PEC biosensor exhibit sensitive PEC response toward M.SssI methyltransferase with a low detection limit of 3.5 mU/mL and a wide linear range from 0.01 to 120 U/mL. Additionally, we show that our homogeneous PEC biosensing platform can be also utilized to screen methyltransferase inhibitors. Therefore, this work will provide a distinctive paradigm for versatile homogeneous PEC biosensing platform that can be used as potential powerful tool toward innovative label-free bioanalytical purposes.
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24
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Alsulami QA. Long lived-charge separation of ultrafast bimolecular electron transfer at PCE10 and fullerene interfaces. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.06.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Hussain M, El-Zohry AM, Gobeze HB, Zhao J, D'Souza F, Mohammed OF. Intramolecular Energy and Electron Transfers in Bodipy Naphthalenediimide Triads. J Phys Chem A 2018; 122:6081-6088. [PMID: 29961320 DOI: 10.1021/acs.jpca.8b03884] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Borondipyrromethene (BDP) naphthalenediimide (NDI) triads (BDP-NDI) and diiodo-BDP derivative (DiiodoBDP-NDI)) were synthesized to study the Förster resonance energy transfer (FRET) and its impact on the triplet state formation and dynamics. In these triads, diiodo-BDP and BDP are the energy donors and NDI is the energy acceptor. Nanosecond transient absorption spectra of triads indicated that triplet state is localized on NDI moiety, either by selective photoexcitation of the Diiodo-BDP or NDI unit. The intersystem crossing (ISC) is attributed to intramolecular heavy atom effect. The triplet state quantum yield was found to be 54% with a lifetime of 38 μs. However, no triplet state is observed for BDP-NDI system either by exciting BDP or NDI unit. Thus, we confirmed that charge recombination does not produce a triplet state. Interestingly, DiiodoBDP-NDI can be used as broadband excitable (500-620 nm) triplet photosensitizer, and high triplet-triplet annihilation (TTA) upconversion quantum yield of ΦUC = 2.8% was observed with 9,10-bis(phenylethynyl)-anthracene (BPEA) as a triplet acceptor/emitter.
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Affiliation(s)
- Mushraf Hussain
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , E-208 West Campus, 2 Ling-Gong Road , Dalian 116024 , P. R. China
| | - Ahmed M El-Zohry
- KAUST Solar Center, Division of Physical Sciences and Engineering , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Kingdom of Saudi Arabia
| | - Habtom B Gobeze
- Department of Chemistry , University of North Texas , 1155 Union Circle, #305070 , Denton , Texas 76203-5017 , United States
| | - Jianzhang Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , E-208 West Campus, 2 Ling-Gong Road , Dalian 116024 , P. R. China
| | - Francis D'Souza
- Department of Chemistry , University of North Texas , 1155 Union Circle, #305070 , Denton , Texas 76203-5017 , United States
| | - Omar F Mohammed
- KAUST Solar Center, Division of Physical Sciences and Engineering , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Kingdom of Saudi Arabia
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26
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Karachevtsev V, Stepanian S, Karachevtsev M, Adamowicz L. Graphene induced molecular flattening of meso -5,10,15,20-tetraphenyl porphyrin: DFT calculations and molecular dynamics simulations. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.04.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Weng H, Yan B. A Eu(III) doped metal-organic framework conjugated with fluorescein-labeled single-stranded DNA for detection of Cu(II) and sulfide. Anal Chim Acta 2017; 988:89-95. [DOI: 10.1016/j.aca.2017.07.061] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
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28
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Weng H, Xu XY, Yan B. Novel multi-component photofunctional nanohybrids for ratio-dependent oxygen sensing. J Colloid Interface Sci 2017; 502:8-15. [DOI: 10.1016/j.jcis.2017.04.081] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/24/2017] [Accepted: 04/25/2017] [Indexed: 10/19/2022]
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29
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The impact of Au doping on the charge carrier dynamics at the interfaces between cationic porphyrin and silver nanoclusters. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.01.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Bottari G, Herranz MÁ, Wibmer L, Volland M, Rodríguez-Pérez L, Guldi DM, Hirsch A, Martín N, D'Souza F, Torres T. Chemical functionalization and characterization of graphene-based materials. Chem Soc Rev 2017; 46:4464-4500. [DOI: 10.1039/c7cs00229g] [Citation(s) in RCA: 308] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review offers an overview on the chemical functionalization, characterization and applications of graphene-based materials.
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Affiliation(s)
- Giovanni Bottari
- Department of Organic Chemistry
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences
| | - Ma Ángeles Herranz
- Departamento de Química Orgánica I
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Leonie Wibmer
- Department of Chemistry and Pharmacy
- Interdisciplinary Center for Molecular Materials (ICMM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Michel Volland
- Department of Chemistry and Pharmacy
- Interdisciplinary Center for Molecular Materials (ICMM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Laura Rodríguez-Pérez
- Departamento de Química Orgánica I
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy
- Interdisciplinary Center for Molecular Materials (ICMM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy
- University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | - Nazario Martín
- IMDEA-Nanociencia
- Campus de Cantoblanco
- 28049 Madrid
- Spain
- Departamento de Química Orgánica I
| | | | - Tomás Torres
- Department of Organic Chemistry
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences
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31
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Qin JH, Wang HR, Han ML, Chang XH, Ma LF. pH-Stable Eu- and Tb-organic-frameworks mediated by an ionic liquid for the aqueous-phase detection of 2,4,6-trinitrophenol (TNP). Dalton Trans 2017; 46:15434-15442. [DOI: 10.1039/c7dt03433d] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
pH-Stable Eu- and Tb-organic-frameworks mediated by ionic liquids for the aqueous-phase detection of 2,4,6-trinitrophenol (TNP).
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Affiliation(s)
- Jian-Hua Qin
- College of Chemistry and Chemical Engineering
- and Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Hua-Rui Wang
- College of Chemistry and Chemical Engineering
- and Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Min-Le Han
- College of Chemistry and Chemical Engineering
- and Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Xin-Hong Chang
- College of Chemistry and Chemical Engineering
- and Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
| | - Lu-Fang Ma
- College of Chemistry and Chemical Engineering
- and Henan Key Laboratory of Function-Oriented Porous Materials
- Luoyang Normal University
- Luoyang 471934
- China
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32
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Begum R, Parida MR, Abdelhady AL, Murali B, Alyami NM, Ahmed GH, Hedhili MN, Bakr OM, Mohammed OF. Engineering Interfacial Charge Transfer in CsPbBr 3 Perovskite Nanocrystals by Heterovalent Doping. J Am Chem Soc 2016; 139:731-737. [PMID: 27977176 DOI: 10.1021/jacs.6b09575] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Since compelling device efficiencies of perovskite solar cells have been achieved, investigative efforts have turned to understand other key challenges in these systems, such as engineering interfacial energy-level alignment and charge transfer (CT). However, these types of studies on perovskite thin-film devices are impeded by the morphological and compositional heterogeneity of the films and their ill-defined surfaces. Here, we use well-defined ligand-protected perovskite nanocrystals (NCs) as model systems to elucidate the role of heterovalent doping on charge-carrier dynamics and energy level alignment at the interface of perovskite NCs with molecular acceptors. More specifically, we develop an in situ doping approach for colloidal CsPbBr3 perovskite NCs with heterovalent Bi3+ ions by hot injection to precisely tune their band structure and excited-state dynamics. This synthetic method allowed us to map the impact of doping on CT from the NCs to different molecular acceptors. Using time-resolved spectroscopy with broadband capability, we clearly demonstrate that CT at the interface of NCs can be tuned and promoted by metal ion doping. We found that doping increases the energy difference between states of the molecular acceptor and the donor moieties, subsequently facilitating the interfacial CT process. This work highlights the key variable components not only for promoting interfacial CT in perovskites, but also for establishing a higher degree of precision and control over the surface and the interface of perovskite molecular acceptors.
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Affiliation(s)
- Raihana Begum
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Manas R Parida
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Ahmed L Abdelhady
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Banavoth Murali
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Noktan M Alyami
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Ghada H Ahmed
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mohamed Nejib Hedhili
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- KAUST Solar Center, Division of Physical Sciences and Engineering and ‡Imaging and Characterization Laboratory, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
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33
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Ahmed GH, Liu J, Parida MR, Murali B, Bose R, AlYami NM, Hedhili MN, Peng W, Pan J, Besong TMD, Bakr OM, Mohammed OF. Shape-Tunable Charge Carrier Dynamics at the Interfaces between Perovskite Nanocrystals and Molecular Acceptors. J Phys Chem Lett 2016; 7:3913-3919. [PMID: 27640429 DOI: 10.1021/acs.jpclett.6b01910] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Hybrid organic/inorganic perovskites have recently emerged as an important class of materials and have exhibited remarkable performance in photovoltaics. To further improve their device efficiency, an insightful understanding of the interfacial charge transfer (CT) process is required. Here, we report the first direct experimental observation of the tremendous effect that the shape of perovskite nanocrystals (NCs) has on interfacial CT in the presence of a molecular acceptor. A dramatic change in CT dynamics at the interfaces of three different NC shapes, spheres, platelets, and cubes, is recorded. Our results clearly demonstrate that the mechanism of CT is significantly affected by the NC shape. More importantly, the results demonstrate that complexation on the NC surface acts as an additional driving force not only to tune the CT dynamics but also to control the reaction mechanism at the interface. This observation opens a new venue for further developing perovskite NCs-based applications.
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Affiliation(s)
- Ghada H Ahmed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jiakai Liu
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Manas R Parida
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Banavoth Murali
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Riya Bose
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Noktan M AlYami
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mohamed N Hedhili
- Imaging and Characterization Laboratory, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Wei Peng
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jun Pan
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Tabot M D Besong
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
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34
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Suhag D, Sharma AK, Patni P, Garg SK, Rajput SK, Chakrabarti S, Mukherjee M. Hydrothermally functionalized biocompatible nitrogen doped graphene nanosheet based biomimetic platforms for nitric oxide detection. J Mater Chem B 2016; 4:4780-4789. [PMID: 32263252 DOI: 10.1039/c6tb01150k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hydrothermal synthesis of nanocomposites is of significant importance, as it affords facile, biocompatible, nontoxic, and economic fabrication. Herein, we report a hitherto unexplored cytocompatible and reusable biomimetic electrochemical sensor based on pyridyl porphyrin functionalized nitrogen doped graphene nanosheets. The porphyrin functionalized nitrogen doped graphene nanosheets (PFNGS) were prepared by a low temperature hydrothermal method via non-covalent strategies with a minimal impact on their physicochemical properties. Owing to their exceptional attributes like operational ease, low cost, portability, and sensitivity, the as-synthesized PFNGS, formed by π-π interactions, were employed for sensing nitric oxide (NO), which is a key regulator of diverse biological processes. Compared to porphyrin and nitrogen doped graphene nanosheets alone, PFNGS exhibited exceptional sensitivity (3.6191 μA μM-1) and remarkable electrocatalytic properties (0.61 V). This clearly outperforms the previously reported modified electrode materials for the electrochemical detection of NO. Cyclic voltammetry (CV) data also suggested that the PFNGS modified electrode possessed an increased reactive surface area, which results in an increase in the number of reactive sites and low charge transfer resistance. These results also demonstrated that the PFNGS modified electrode showed high stability and reproducibility, the limit of detection (LOD) (S/N = 3) of which was estimated to be 1 nM. Our PFNGS were found to be highly biocompatible and could also detect NO released from macrophage cells. This blend of biocompatibility, electrode stability, electrocatalytic activity along with enhanced sensitivity and selectivity makes PFNGS a powerful and reliable nanomaterial for various biomedical applications in complex biological systems.
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Affiliation(s)
- Deepa Suhag
- Biomimetic and Nanostructured Materials Research Laboratory, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Sector 125, Noida, India.
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35
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Sun J, Adhikari A, Shaheen BS, Yang H, Mohammed OF. Mapping Carrier Dynamics on Material Surfaces in Space and Time using Scanning Ultrafast Electron Microscopy. J Phys Chem Lett 2016; 7:985-94. [PMID: 26911313 DOI: 10.1021/acs.jpclett.5b02908] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Selectively capturing the ultrafast dynamics of charge carriers on materials surfaces and at interfaces is crucial to the design of solar cells and optoelectronic devices. Despite extensive research efforts over the past few decades, information and understanding about surface-dynamical processes, including carrier trapping and recombination remains extremely limited. A key challenge is to selectively map such dynamic processes, a capability that is hitherto impractical by time-resolved laser techniques, which are limited by the laser's relatively large penetration depth and consequently these techniques record mainly bulk information. Such surface dynamics can only be mapped in real space and time by applying four-dimensional (4D) scanning ultrafast electron microscopy (S-UEM), which records snapshots of materials surfaces with nanometer spatial and subpicosecond temporal resolutions. In this method, the secondary electron (SE) signal emitted from the sample's surface is extremely sensitive to the surface dynamics and is detected in real time. In several unique applications, we spatially and temporally visualize the SE energy gain and loss, the charge carrier dynamics on the surface of InGaN nanowires and CdSe single crystal and its powder film. We also discuss the mechanisms for the observed dynamics, which will be the foundation for future potential applications of S-UEM to a wide range of studies on material surfaces and device interfaces.
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Affiliation(s)
- Jingya Sun
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Aniruddha Adhikari
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Basamat S Shaheen
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Haoze Yang
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
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36
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Aly SM, AbdulHalim LG, Besong TMD, Soldan G, Bakr OM, Mohammed OF. Ultrafast static and diffusion-controlled electron transfer at Ag29 nanocluster/molecular acceptor interfaces. NANOSCALE 2016; 8:5412-6. [PMID: 26548942 DOI: 10.1039/c5nr05328e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Efficient absorption of visible light and a long-lived excited state lifetime of silver nanoclusters (Ag29 NCs) are integral properties for these new clusters to serve as light-harvesting materials. Upon optical excitation, electron injection at Ag29 NC/methyl viologen (MV(2+)) interfaces is very efficient and ultrafast. Interestingly, our femto- and nanosecond time-resolved results demonstrate clearly that both dynamic and static electron transfer mechanisms are involved in photoluminescence quenching of Ag29 NCs.
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Affiliation(s)
- Shawkat M Aly
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Lina G AbdulHalim
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Tabot M D Besong
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Giada Soldan
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Osman M Bakr
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
| | - Omar F Mohammed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
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37
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Abdelhady AL, Saidaminov MI, Murali B, Adinolfi V, Voznyy O, Katsiev K, Alarousu E, Comin R, Dursun I, Sinatra L, Sargent EH, Mohammed OF, Bakr OM. Heterovalent Dopant Incorporation for Bandgap and Type Engineering of Perovskite Crystals. J Phys Chem Lett 2016; 7:295-301. [PMID: 26727130 DOI: 10.1021/acs.jpclett.5b02681] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Controllable doping of semiconductors is a fundamental technological requirement for electronic and optoelectronic devices. As intrinsic semiconductors, hybrid perovskites have so far been a phenomenal success in photovoltaics. The inability to dope these materials heterovalently (or aliovalently) has greatly limited their wider utilizations in electronics. Here we show an efficient in situ chemical route that achieves the controlled incorporation of trivalent cations (Bi(3+), Au(3+), or In(3+)) by exploiting the retrograde solubility behavior of perovskites. We term the new method dopant incorporation in the retrograde regime. We achieve Bi(3+) incorporation that leads to bandgap tuning (∼300 meV), 10(4) fold enhancement in electrical conductivity, and a change in the sign of majority charge carriers from positive to negative. This work demonstrates the successful incorporation of dopants into perovskite crystals while preserving the host lattice structure, opening new avenues to tailor the electronic and optoelectronic properties of this rapidly emerging class of solution-processed semiconductors.
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Affiliation(s)
- Ahmed L Abdelhady
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
- Department of Chemistry, Faculty of Science, Mansoura University , Mansoura, 35516, Egypt
| | - Makhsud I Saidaminov
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Banavoth Murali
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Valerio Adinolfi
- Department of Electrical and Computer Engineering, University of Toronto , Toronto, Ontario M5S 3G4, Canada
| | - Oleksandr Voznyy
- Department of Electrical and Computer Engineering, University of Toronto , Toronto, Ontario M5S 3G4, Canada
| | - Khabiboulakh Katsiev
- SABIC Corporate Research and Innovation Center, King Abdullah University of Science and Technology (KAUST) , Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Erkki Alarousu
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Riccardo Comin
- Department of Electrical and Computer Engineering, University of Toronto , Toronto, Ontario M5S 3G4, Canada
| | - Ibrahim Dursun
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Lutfan Sinatra
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto , Toronto, Ontario M5S 3G4, Canada
| | - Omar F Mohammed
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
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38
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Sun J, Melnikov VA, Khan JI, Mohammed OF. Real-Space Imaging of Carrier Dynamics of Materials Surfaces by Second-Generation Four-Dimensional Scanning Ultrafast Electron Microscopy. J Phys Chem Lett 2015; 6:3884-3890. [PMID: 26722888 DOI: 10.1021/acs.jpclett.5b01867] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In the fields of photocatalysis and photovoltaics, ultrafast dynamical processes, including carrier trapping and recombination on material surfaces, are among the key factors that determine the overall energy conversion efficiency. A precise knowledge of these dynamical events on the nanometer (nm) and femtosecond (fs) scales was not accessible until recently. The only way to access such fundamental processes fully is to map the surface dynamics selectively in real space and time. In this study, we establish a second generation of four-dimensional scanning ultrafast electron microscopy (4D S-UEM) and demonstrate the ability to record time-resolved images (snapshots) of material surfaces with 650 fs and ∼5 nm temporal and spatial resolutions, respectively. In this method, the surface of a specimen is excited by a clocking optical pulse and imaged using a pulsed primary electron beam as a probe pulse, generating secondary electrons (SEs), which are emitted from the surface of the specimen in a manner that is sensitive to the local electron/hole density. This method provides direct and controllable information regarding surface dynamics. We clearly demonstrate how the surface morphology, grains, defects, and nanostructured features can significantly impact the overall dynamical processes on the surface of photoactive-materials. In addition, the ability to access two regimes of dynamical probing in a single experiment and the energy loss of SEs in semiconductor-nanoscale materials will also be discussed.
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Affiliation(s)
- Jingya Sun
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Vasily A Melnikov
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jafar I Khan
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia
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39
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Bernal MM, Pérez EM. One-pot exfoliation of graphite and synthesis of nanographene/dimesitylporphyrin hybrids. Int J Mol Sci 2015; 16:10704-14. [PMID: 25984598 PMCID: PMC4463671 DOI: 10.3390/ijms160510704] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/04/2015] [Accepted: 05/07/2015] [Indexed: 01/21/2023] Open
Abstract
A simple one-pot process to exfoliate graphite and synthesize nanographene-dimesitylporphyrin hybrids has been developed. Despite the bulky mesityl groups, which are expected to hinder the efficient π–π stacking between the porphyrin core and graphene, the liquid-phase exfoliation of graphite is significantly favored by the presence of the porphyrins. Metallation of the porphyrin further enhances this effect. The resulting graphene/porphyrin hybrids were characterized by spectroscopy (UV-visible, fluorescence, and Raman) and microscopy (STEM, scanning transmission electron microscopy).
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Affiliation(s)
- M Mar Bernal
- IMDEA Nanociencia, C/Faraday 9, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain.
| | - Emilio M Pérez
- IMDEA Nanociencia, C/Faraday 9, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain.
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Masih D, Aly SM, Usman A, Alarousu E, Mohammed OF. Real-time observation of ultrafast electron injection at graphene-Zn porphyrin interfaces. Phys Chem Chem Phys 2015; 17:9015-9. [PMID: 25751714 DOI: 10.1039/c4cp06050d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the ultrafast interfacial electron transfer (ET) between zinc(II) porphyrin (ZnTMPyP) and negatively charged graphene carboxylate (GC) using state-of-the-art femtosecond laser spectroscopy with broadband capabilities. The steady-state interaction between GC and ZnTMPyP results in a red-shifted absorption spectrum, providing a clear indication for the binding affinity between ZnTMPyP and GC via electrostatic and π-π stacking interactions. Ultrafast transient absorption (TA) spectra in the absence and presence of three different GC concentrations reveal (i) the ultrafast formation of singlet excited ZnTMPyP*, which partially relaxes into a long-lived triplet state, and (ii) ET from the singlet excited ZnTMPyP* to GC, forming ZnTMPyP˙(+) and GC˙(-), as indicated by a spectral feature at 650-750 nm, which is attributed to a ZnTMPyP radical cation resulting from the ET process.
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Affiliation(s)
- Dilshad Masih
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia.
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41
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Aly SM, Ahmed GH, Shaheen BS, Sun J, Mohammed OF. Molecular-structure Control of Ultrafast Electron Injection at Cationic Porphyrin-CdTe Quantum Dot Interfaces. J Phys Chem Lett 2015; 6:791-795. [PMID: 26262654 DOI: 10.1021/acs.jpclett.5b00235] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Charge transfer (CT) at donor (D)/acceptor (A) interfaces is central to the functioning of photovoltaic and light-emitting devices. Understanding and controlling this process on the molecular level has been proven to be crucial for optimizing the performance of many energy-challenge relevant devices. Here, we report the experimental observations of controlled on/off ultrafast electron transfer (ET) at cationic porphyrin-CdTe quantum dot (QD) interfaces using femto- and nanosecond broad-band transient absorption (TA) spectroscopy. The time-resolved data demonstrate how one can turn on/off the electron injection from porphyrin to the CdTe QDs. With careful control of the molecular structure, we are able to tune the electron injection at the porphyrin-CdTe QD interface from zero to very efficient and ultrafast. In addition, our data demonstrate that the ET process occurs within our temporal resolution of 120 fs, which is one of the fastest times recorded for organic photovoltaics.
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Affiliation(s)
- Shawkat M Aly
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Ghada H Ahmed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Basamat S Shaheen
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jingya Sun
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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42
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KC CB, Lim GN, D'Souza F. Charge Separation in Graphene-Decorated Multimodular Tris(pyrene)-Subphthalocyanine-Fullerene Donor-Acceptor Hybrids. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500156] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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KC CB, Lim GN, D'Souza F. Charge Separation in Graphene-Decorated Multimodular Tris(pyrene)-Subphthalocyanine-Fullerene Donor-Acceptor Hybrids. Angew Chem Int Ed Engl 2015; 54:5088-92. [DOI: 10.1002/anie.201500156] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 02/11/2015] [Indexed: 11/12/2022]
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44
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Shen X, Yan B. Photoactive rare earth complexes for fluorescence tuning and sensing cations (Fe3+) and anions (Cr2O72−). RSC Adv 2015. [DOI: 10.1039/c4ra14174a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A series of photoactive rare earth coordination polymer materials RE/Ad/BPDC (Ad = adeninate, BPDC = biphenyl-4,4′-dicarboxylate) with tunable multi-color luminescence are synthesized. Y0.99Eu0.01/Ad/BPDC has a selective fluorescence quenching effect for Fe3+ and Cr2O72−.
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Affiliation(s)
- Xiang Shen
- Department of Chemistry
- Tongji University
- Shanghai 200092
- P. R. China
| | - Bing Yan
- Department of Chemistry
- Tongji University
- Shanghai 200092
- P. R. China
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45
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Parida MR, Aly SM, Alarousu E, Sridharan A, Nagaraju DH, Alshareef HN, Mohammed OF. To what extent can charge localization influence electron injection efficiency at graphene–porphyrin interfaces? Phys Chem Chem Phys 2015; 17:14513-7. [DOI: 10.1039/c5cp02362a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With careful control of the charge localization of the TMPyP cavity using β-cyclodextrin as an external cage, we successfully improved the interfacial-electron injection efficiency from cationic TMPyP to GC by 120% compared to TMPyP alone.
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Affiliation(s)
- Manas R. Parida
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Shawkat M. Aly
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Erkki Alarousu
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Aravindan Sridharan
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Doddahalli H. Nagaraju
- Materials Science and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Saudi Arabia
| | - Husam N. Alshareef
- Materials Science and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Saudi Arabia
| | - Omar F. Mohammed
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
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46
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Qin JH, Ma B, Liu XF, Lu HL, Dong XY, Zang SQ, Hou H. Ionic liquid directed syntheses of water-stable Eu– and Tb–organic-frameworks for aqueous-phase detection of nitroaromatic explosives. Dalton Trans 2015; 44:14594-603. [DOI: 10.1039/c5dt02054a] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ionic liquid directed syntheses of water-stable Eu– and Tb–organic-frameworks for aqueous-phase detection of nitroaromatic explosives.
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Affiliation(s)
- Jian-Hua Qin
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- College of Chemistry and Chemical Engineering
| | - Bing Ma
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiao-Fei Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Hong-Lin Lu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xi-Yan Dong
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Shuang-Quan Zang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Hongwei Hou
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
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Ahmed GH, Aly SM, Usman A, Eita MS, Melnikov VA, Mohammed OF. Quantum confinement-tunable intersystem crossing and the triplet state lifetime of cationic porphyrin–CdTe quantum dot nano-assemblies. Chem Commun (Camb) 2015; 51:8010-3. [DOI: 10.1039/c5cc01542a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We show the possibility of modulating the triplet-state lifetime of cationic porphyrins on the surface of CdTe quantum dots.
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Affiliation(s)
- Ghada H. Ahmed
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Shawkat M. Aly
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Anwar Usman
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Mohamed S. Eita
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Vasily A. Melnikov
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Omar F. Mohammed
- Solar and Photovoltaics Engineering Research Center
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
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48
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Aly SM, Usman A, AlZayer M, Hamdi GA, Alarousu E, Mohammed OF. Solvent-Dependent Excited-State Hydrogen Transfer and Intersystem Crossing in 2-(2′-Hydroxyphenyl)-Benzothiazole. J Phys Chem B 2014; 119:2596-603. [DOI: 10.1021/jp508777h] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shawkat M. Aly
- Solar and Photovoltaics Engineering
Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Anwar Usman
- Solar and Photovoltaics Engineering
Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Maytham AlZayer
- Solar and Photovoltaics Engineering
Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Ghada A. Hamdi
- Solar and Photovoltaics Engineering
Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Erkki Alarousu
- Solar and Photovoltaics Engineering
Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F. Mohammed
- Solar and Photovoltaics Engineering
Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
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49
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Aly SM, Goswami S, Alsulami QA, Schanze KS, Mohammed OF. Ultrafast Photoinduced Electron Transfer in a π-Conjugated Oligomer/Porphyrin Complex. J Phys Chem Lett 2014; 5:3386-3390. [PMID: 26278449 DOI: 10.1021/jz5018174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Controlling charge transfer (CT), charge separation (CS), and charge recombination (CR) at the donor-acceptor interface is extremely important to optimize the conversion efficiency in solar cell devices. In general, ultrafast CT and slow CR are desirable for optimal device performance. In this Letter, the ultrafast excited-state CT between platinum oligomer (DPP-Pt(acac)) as a new electron donor and porphyrin as an electron acceptor is monitored for the first time using femtosecond (fs) transient absorption (TA) spectroscopy with broad-band capability and 120 fs temporal resolution. Turning the CT on/off has been shown to be possible either by switching from an organometallic oligomer to a metal-free oligomer or by controlling the charge density on the nitrogen atom of the porphyrin meso unit. Our time-resolved data show that the CT and CS between DPP-Pt(acac) and cationic porphyrin are ultrafast (approximately 1.5 ps), and the CR is slow (ns time scale), as inferred from the formation and the decay of the cationic and anionic species. We also found that the metallic center in the DPP-Pt(acac) oligomer and the positive charge on the porphyrin are the keys to switching on/off the ultrafast CT process.
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Affiliation(s)
- Shawkat M Aly
- †Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Subhadip Goswami
- ‡Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Qana A Alsulami
- †Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Kirk S Schanze
- ‡Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Omar F Mohammed
- †Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
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