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Palion-Gazda J, Kwiecień A, Choroba K, Penkala M, Kryczka A, Machura B. The Role of Intraligand Charge Transfer Processes in Iridium(III) Complexes with Morpholine-Decorated 4'-Phenyl-2,2':6',2″-terpyridine. Molecules 2024; 29:3074. [PMID: 38999026 PMCID: PMC11243112 DOI: 10.3390/molecules29133074] [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: 06/03/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/14/2024] Open
Abstract
To investigate the impact of the electron-donating morpholinyl (morph) group on the ground- and excited-state properties of two different types of Ir(III) complexes, [IrCl3(R-C6H4-terpy-κ3N)] and [Ir(R-C6H4-terpy-κ3N)2](PF6)3, the compounds [IrCl3(morph-C6H4-terpy-κ3N)] (1A), 4[Ir(morph-C6H4-terpy-κ3N)2](PF6)3 (2A), [IrCl3(Ph-terpy-κ3N)] (1B) and [Ir(Ph-terpy-κ3N)2](PF6)3 (2B) were obtained. Their photophysical properties were comprehensively investigated with the aid of static and time-resolved spectroscopic methods accompanied by theoretical DFT/TD-DFT calculations. In the case of bis-terpyridyl iridium(III) complexes, the attachment of the morpholinyl group induced dramatic changes in the absorption and emission characteristics, manifested by the appearance of a new, very strong visible absorption tailing up to 600 nm, and a significant bathochromic shift in the emission of 2A relative to the model chromophore. The emission features of 2A and 2B were found to originate from the triplet excited states of different natures: intraligand charge transfer (3ILCT) for 2A and intraligand with a small admixture of metal-to-ligand charge transfer (3IL-3MLCT) for 2B. The optical properties of the mono-terpyridyl iridium(III) complexes were less significantly impacted by the morpholinyl substituent. Based on UV-Vis absorption spectra, emission wavelengths and lifetimes in different environments, transient absorption studies, and theoretical calculations, it was demonstrated that the visible absorption and emission features of 1A are governed by singlet and triplet excited states of a mixed MLLCT-ILCT nature, with a dominant contribution of the first component, that is, metal-ligand-to-ligand charge transfer (MLLCT). The involvement of ILCT transitions was reflected by an enhancement of the molar extinction coefficients of the absorption bands of 1A in the range of 350-550 nm, and a small red shift in its emission relative to the model chromophore.
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Affiliation(s)
- Joanna Palion-Gazda
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Aleksandra Kwiecień
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Katarzyna Choroba
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Mateusz Penkala
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Anna Kryczka
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Barbara Machura
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
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Wee-Léonard MV, Elias B, Troian-Gautier L. Photoinduced One-Electron Chloride Oxidation in Water Using a Pentacationic Ir(III) Photosensitizer. J Am Chem Soc 2024. [PMID: 38621164 DOI: 10.1021/jacs.4c00478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
A novel iridium(III) photosensitizer containing pyridinium-decorated terpyridines has been used for the photo-oxidation of chloride in water. Despite its abundance, the very positive one-electron reduction potential (E° Cl•/- = 2.1-2.4 V vs NHE) restricted its use in energy conversion schemes and artificial photosynthesis. The kinetics of the photoinduced electron transfer process were investigated through Stern-Volmer quenching experiments and nanosecond transient absorption spectroscopy, which provided unambiguous evidence that photoinduced chloride oxidation occurred with a quenching rate constant kq = 5.0 × 1010 M-1 s-1. Complementary spectroelectrochemistry and photolysis experiments confirmed the formation of the reduced photosensitizer and showcased the redox and photostability of the Ir(III) photosensitizer that holds great promise for the HX splitting approach.
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Affiliation(s)
- Milan Vander Wee-Léonard
- UCLouvain, Institute of Condensed Matter and Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Benjamin Elias
- UCLouvain, Institute of Condensed Matter and Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Ludovic Troian-Gautier
- UCLouvain, Institute of Condensed Matter and Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, 1348 Louvain-la-Neuve, Belgium
- Wel Research Institute, Avenue Pasteur 6, 1300 Wavre, Belgium
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Ahmad MG, Balamurali MM, Chanda K. Click-derived multifunctional metal complexes for diverse applications. Chem Soc Rev 2023; 52:5051-5087. [PMID: 37431583 DOI: 10.1039/d3cs00343d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
The Click reaction that involves Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) serves as the most potent and highly dependable tool for the development of many complex architectures. It has paved the way for the synthesis of numerous drug molecules with enhanced synthetic flexibility, reliability, specificity and modularity. It is all about bringing two different molecular entities together to achieve the required molecular properties. The utilization of Click chemistry has been well demonstrated in organic synthesis, particularly in reactions that involve biocompatible precursors. In pharmaceutical research, Click chemistry is extensively utilized for drug delivery applications. The exhibited bio-compatibility and dormancy towards other biological components under cellular environments makes Click chemistry an identified boon in bio-medical research. In this review, various click-derived transition metal complexes are discussed in terms of their applications and uniqueness. The scope of this chemistry towards other streams of applied sciences is also discussed.
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Affiliation(s)
- Md Gulzar Ahmad
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamilnadu, India.
| | - M M Balamurali
- Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology, Chennai campus, Chennai 600127, Tamilnadu, India.
| | - Kaushik Chanda
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamilnadu, India.
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Jacques A, Devaux A, Rubay C, Pennetreau F, Desmecht A, Robeyns K, Hermans S, Elias B. Polypyridine Iridium(III) and Ruthenium(II) Complexes for Homogeneous and Graphene‐Supported Photoredox Catalysis. ChemCatChem 2023. [DOI: 10.1002/cctc.202201672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Alexandre Jacques
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Alexandre Devaux
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Christophe Rubay
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Florence Pennetreau
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Antonin Desmecht
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Sophie Hermans
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
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5
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Bevernaegie R, Wehlin SAM, Elias B, Troian‐Gautier L. A Roadmap Towards Visible Light Mediated Electron Transfer Chemistry with Iridium(III) Complexes. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000255] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Robin Bevernaegie
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
- Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry, Materials and Catalysis (MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 box L4.01.02 1348 Louvain-la-Neuve Belgium
| | - Sara A. M. Wehlin
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
| | - Benjamin Elias
- Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry, Materials and Catalysis (MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 box L4.01.02 1348 Louvain-la-Neuve Belgium
| | - Ludovic Troian‐Gautier
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
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Maekawa M, Terada K, Oda S, Sugimoto K, Okubo T, Kuroda-Sowa T. Syntheses and structural characterizations of mononuclear Ir(III) hydride complexes with 2,2′:6′,2″-terpyridine in the κ2N,N' and κ3N,N',N″ coordination modes. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.119962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Lu C, Xu W, Shah H, Liu B, Xu W, Sun L, Qian SY, Sun W. In Vitro Photodynamic Therapy of Mononuclear and Dinuclear Iridium(III) Bis(terpyridine) Complexes. ACS APPLIED BIO MATERIALS 2020; 3:6865-6875. [PMID: 35019348 DOI: 10.1021/acsabm.0c00784] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Three mononuclear or dinuclear bis(terpyridine) (tpy) iridium(III) complexes bearing pyren-1-yl (pyr) group(s) were synthesized. Their photophysical properties in water and in vitro photodynamic therapy (PDT) effects toward the human lung epithelial cancer cell line A549 and the human epidermal skin cancer cell line A431 were investigated to evaluate the effects of dinuclear versus mononuclear complexes and the impact of the oligoether substituent at the ligand. All complexes possessed pyr-tpy ligand-associated charge transfer (1CT)/1π,π* absorption bands at 350-550 nm, with the dinuclear complex Ir3 showing the much enhanced absorptivity of this band. These complexes exhibited dual emission upon excitation at >430 nm in most cases, with the emitting states being ascribed to 1ILCT (intraligand charge transfer) and 3π,π*/3CT states, respectively. All complexes exhibited relatively weak to moderate cytotoxicity in the dark but high photocytotoxicity upon broadband visible light irradiation. Among them, the dinuclear complex Ir3 showed the highest intracellular reactive oxygen species (ROS) generation and PDT efficiency compared to its mononuclear counterpart Ir1. Introducing an oligoether substituent on one of the tpy ligands in Ir2 also improved its intracellular ROS generation and PDT efficacy compared to those induced by Ir1. Ir3 induced both mitochondrial dysfunction and lysosomal damage upon light activation toward both cell lines, whereas Ir1 and Ir2 caused both mitochondrial dysfunction and lysosomal damage in A431 cells but only lysosomal damage in A549 cells. The dominant cell death pathway induced by Ir1-Ir3 PDT is apoptosis.
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Affiliation(s)
- Cuifen Lu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States.,Hubei Collaborative Innovation Center for Advanced Organochemical Materials and Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan 430062, P. R. China
| | - Wan Xu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Harshit Shah
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Wei Xu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Liya Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Steven Y Qian
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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Perales D, Ford SA, Salpage SR, Collins TS, Zeller M, Hanson K, Bart SC. Conversion of Trivalent Uranium Anilido to Tetravalent Uranium Imido Species via Oxidative Deprotonation. Inorg Chem 2020; 59:11910-11914. [PMID: 32806006 DOI: 10.1021/acs.inorgchem.0c01704] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Diana Perales
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Shannon A. Ford
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sahan R. Salpage
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Tyler S. Collins
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Matthias Zeller
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Kenneth Hanson
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Suzanne C. Bart
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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9
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Liu B, Jabed MA, Kilina S, Sun W. Synthesis, Photophysics, and Reverse Saturable Absorption of trans-Bis-cyclometalated Iridium(III) Complexes (C^N^C)Ir(R-tpy) + (tpy = 2,2':6',2″-Terpyridine) with Broadband Excited-State Absorption. Inorg Chem 2020; 59:8532-8542. [PMID: 32497429 DOI: 10.1021/acs.inorgchem.0c00961] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Extending the bandwidth of triplet excited-state absorption in transition-metal complexes is appealing for developing broadband reverse saturable absorbers. Targeting this goal, five bis-terdentate iridium(III) complexes (Ir1-Ir5) bearing trans-bis-cyclometalating (C^N^C) and 4'-R-2,2':6',2″-terpyridine (4'-R-tpy) ligands were synthesized. The effects of the structural variation in cyclometalating ligands and substituents at the tpy ligand on the photophysics of these complexes have been systematically explored using spectroscopic methods (i.e., UV-vis absorption, emission, and transient absorption spectroscopy) and time-dependent density functional theory (TDDFT) calculations. All complexes exhibited intensely structured 1π,π* absorption bands at <400 nm and broad charge transfer (1CT)/1π,π* transitions at 400-600 nm. Ligand structural variations exerted a very small effect on the energies of the 1CT/1π,π* transitions; however, they had a significant effect on the molar extinction coefficients of these absorption bands. All complexes emitted featureless deep red phosphorescence in solutions at room temperature and gave broad-band and strong triplet excited-state absorption ranging from the visible to the near-infrared (NIR) spectral regions, with both originating from the 3π,π*/3CT states. Although alteration of the ligand structures influenced the emission energies slightly, these changes significantly affected the emission lifetimes and quantum yields, transient absorption spectral features, and the triplet excited-state quantum yields of the complexes. Except for Ir3, the other four complexes all manifested reverse saturable absorption (RSA) upon nanosecond laser pulse excitation at 532 nm, with the decreasing trend of RSA following Ir2 ≈ Ir4 > Ir1 > Ir5 > Ir3. The RSA trend corresponded well with the strength of the excited-state and ground-state absorption differences (ΔOD) at 532 nm for these complexes.
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Affiliation(s)
- Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
| | - Mohammed A Jabed
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
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Liu B, Monro S, Li Z, Jabed MA, Ramirez D, Cameron CG, Colón K, Roque J, Kilina S, Tian J, McFarland SA, Sun W. A New Class of Homoleptic and Heteroleptic Bis(terpyridine) Iridium(III) Complexes with Strong Photodynamic Therapy Effects. ACS APPLIED BIO MATERIALS 2019; 2:2964-2977. [PMID: 31844844 PMCID: PMC6913535 DOI: 10.1021/acsabm.9b00312] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Six homo- or heteroleptic tricationic Ir(R1-tpy)(R2-tpy)3+ complexes (Ir1-Ir6, R1/R2 = Ph, 4'-N(CH3)2Ph, pyren-1-yl, or 4'-{2-[2-(2-methoxyethoxy)ethoxy]ethoxy}Ph, tpy = 2,2';6',2"-terpyridine) were synthesized and tested for photodynamic therapy (PDT) effects. The ground- and excited-state characteristics of these complexes were studied systematically via spectroscopic methods and quantum chemistry calculations. All complexes possessed intraligand charge transfer (1ILCT) / metal-to-ligand charge transfer (1MLCT) dominated transition(s) in their low-energy absorption bands, which red-shifted with the increased electron-releasing strength of the R1/R2 substituent. Five of the complexes exhibited ligand-centered 3 π,π*/3ILCT/3MLCT emission. With a stronger electron-releasing R1/R2 substituent, the degree of charge transfer contribution increased, leading to a decrease of the emission quantum yield. When the 4'-N(CH3)2Ph substituent was introduced on both tpy ligands, the emission of Ir3 was completely quenched. Our study on the transient absorption of these complexes demonstrated that they all possessed broadband triplet excited-state absorption in the 400-800 nm region. Pyrenyl substitution of one or more tpy ligands, as in Ir4 and Ir5, increased the lifetimes of the lowest triplet excited state and the singlet oxygen (1O2) production efficiencies. Ir1-Ir5 were nontoxic toward SK-MEL-28 cells, with photocytotoxicities that varied from 0.18 to 153 µM. Among them, Ir4 had the highest 1O2 quantum yield (0.81) in cell-free conditions, showing the largest photocytotoxicity against SK-MEL-28 cells for Ir(III) PSs to date, and was the most efficient generator of reactive oxygen species (ROS) in vitro. Ir4 possessed a very large phototherapeutic index (PI = dark EC50 / light EC50) of >1657, the largest reported for an Ir(III) complex photosensitizer upon broadband visible light (400-700 nm) activation. Ir4 also exhibited a very strong PDT effect toward MCF-7 breast cancer cells and its xenograft tumor model. Upon 450-nm light activation, Ir4 dramatically inhibited the xenograft tumor growth and exhibited negligible side effects upon PDT treatment.
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Affiliation(s)
- Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Susan Monro
- Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, NS B4P 2R6, Canada
| | - Zhike Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (MOE), Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, P. R. China
| | - Mohammed A. Jabed
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Daniel Ramirez
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Colin G. Cameron
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - Katsuya Colón
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - John Roque
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Jian Tian
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (MOE), Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, P. R. China
| | - Sherri A. McFarland
- Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, NS B4P 2R6, Canada
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
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Ma Y, Zhang S, Wei H, Dong Y, Shen L, Liu S, Zhao Q, Liu L, Wong WY. Enhanced singlet oxygen generation of a soft salt through efficient energy transfer between two ionic metal complexes. Dalton Trans 2018; 47:5582-5588. [DOI: 10.1039/c8dt00720a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A novel soft salt based photosensitizer was successfully developed for application in photodynamic therapy of cancer cells for the first time.
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Affiliation(s)
- Yun Ma
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
- Institute of Molecular Functional Materials and Department of Chemistry
| | - Shujun Zhang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
| | - Huanjie Wei
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
| | - Yafang Dong
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
| | - Liang Shen
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
| | - Shujuan Liu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Nanjing University of Posts & Telecommunications (NJUPT)
- Nanjing 210023
- P. R. China
| | - Li Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- School of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials and Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- P. R. China
- Department of Applied Biology and Chemical Technology
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Chi Y, Chang TK, Ganesan P, Rajakannu P. Emissive bis-tridentate Ir(III) metal complexes: Tactics, photophysics and applications. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.11.016] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Metalloreceptors of the type L-M-L [L = (4′-(2-pyridyl)-2,2′:6′,2″-terpyridine), M = Co(II), Cu(II), Zn(II)] for the recognition of Fe 2+ ions. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.06.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Phosphorescent Neutral Iridium (III) Complexes for Organic Light-Emitting Diodes. Top Curr Chem (Cham) 2017; 375:39. [DOI: 10.1007/s41061-017-0126-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 02/22/2017] [Indexed: 11/26/2022]
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Kumar S, Hisamatsu Y, Tamaki Y, Ishitani O, Aoki S. Design and Synthesis of Heteroleptic Cyclometalated Iridium(III) Complexes Containing Quinoline-Type Ligands that Exhibit Dual Phosphorescence. Inorg Chem 2016; 55:3829-43. [DOI: 10.1021/acs.inorgchem.5b02872] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Yusuke Tamaki
- Department
of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro-Ku, Tokyo 152-8550, Japan
| | - Osamu Ishitani
- Department
of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro-Ku, Tokyo 152-8550, Japan
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16
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Mondal PC, Manna AK. Synthesis of heteroleptic terpyridyl complexes of Fe(ii) and Ru(ii): optical and electrochemical studies. NEW J CHEM 2016. [DOI: 10.1039/c5nj03106k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Heteroleptic terpyridyl complexes of Fe(ii) and Ru(ii) are synthesized. They are characterized using complimentary techniques and their optical and electrochemical properties are studied. A detailed computational study was also performed.
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Affiliation(s)
| | - Arun Kumar Manna
- Department of Materials and Interfaces
- Weizmann Institute of Science
- Rehovot-7610001
- Israel
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17
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Wu Z, Mu J, Wang Q, Chen X, Jensen L, Yi C, Li MJ. Hydroxyl and amino functionalized cyclometalated Ir(III) complexes: Synthesis, characterization and cytotoxicity studies. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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Kando A, Hisamatsu Y, Ohwada H, Itoh T, Moromizato S, Kohno M, Aoki S. Photochemical Properties of Red-Emitting Tris(cyclometalated) Iridium(III) Complexes Having Basic and Nitro Groups and Application to pH Sensing and Photoinduced Cell Death. Inorg Chem 2015; 54:5342-57. [DOI: 10.1021/acs.inorgchem.5b00369] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Aya Kando
- Faculty
of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yosuke Hisamatsu
- Faculty
of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Hiroki Ohwada
- Faculty
of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Taiki Itoh
- Faculty
of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Shinsuke Moromizato
- Faculty
of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Masahiro Kohno
- Graduate
School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Shin Aoki
- Faculty
of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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19
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Fu WW, Zhang FX, Kuang DZ, Liu Y, Yang YQ. Syntheses, crystal structures and luminescence of zinc(II) and cadmium(II) complexes with 4′-substituted 2,2′:6′,2″-terpyridines. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1019486] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Wei-Wei Fu
- Key Laboratory of Functional Organometallic Materials of Hunan Province College, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, China
| | - Fu-Xing Zhang
- Key Laboratory of Functional Organometallic Materials of Hunan Province College, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, China
| | - Dai-Zhi Kuang
- Key Laboratory of Functional Organometallic Materials of Hunan Province College, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, China
| | - Yang Liu
- Key Laboratory of Functional Organometallic Materials of Hunan Province College, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, China
| | - Ying-Qun Yang
- Key Laboratory of Functional Organometallic Materials of Hunan Province College, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, China
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20
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Ni X, Li T, Song Q. The electrochemiluminescence of an iridium complex induced by hydroxide and ethoxide ions in organic solvents. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Jacques A, Kirsch-De Mesmaeker A, Elias B. Selective DNA purine base photooxidation by bis-terdentate iridium(III) polypyridyl and cyclometalated complexes. Inorg Chem 2014; 53:1507-12. [PMID: 24446771 DOI: 10.1021/ic402476b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two bis-terdentate iridium(III) complexes with polypyridyl and cyclometalated ligands have been prepared and characterized. Their spectroscopic and electrochemical properties have been studied, and a photophysical scheme addressing their properties is proposed. Different types of excited states have been considered to account for the deactivation processes in each complex. Interestingly, in the presence of mono- or polynucleotides, a photoinduced electron-transfer process from a DNA purine base (i.e., guanine or adenine) to the excited complex is shown through luminescence quenching experiments. For the first time, this work reports evidence for selective DNA purine bases oxidation by excited iridium(III) bis-terdentate complexes.
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Affiliation(s)
- Alexandre Jacques
- Institut de la Matière Condensée et des Nanosciences, Université Catholique de Louvain , Place Louis Pasteur 2, Box L4.01.02, B-1348 Louvain-la-Neuve, Belgium
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22
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Majumdar P, Yuan X, Li S, Le Guennic B, Ma J, Zhang C, Jacquemin D, Zhao J. Cyclometalated Ir(iii) complexes with styryl-BODIPY ligands showing near IR absorption/emission: preparation, study of photophysical properties and application as photodynamic/luminescence imaging materials. J Mater Chem B 2014; 2:2838-2854. [DOI: 10.1039/c4tb00284a] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Heteroleptic C^N cyclometalated iridium(iii) complexes showing strong NIR absorption were prepared.
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Affiliation(s)
- Poulomi Majumdar
- State Key Laboratory of Fine Chemical
- School of Chemical Engineering
- Dalian University of Technology
- Dalian, P.R. China
| | - Xiaolin Yuan
- Center Laboratory
- Affiliated Zhongshan Hospital of Dalian University
- Dalian 116001, P.R. China
| | - Shengfu Li
- Center Laboratory
- Affiliated Zhongshan Hospital of Dalian University
- Dalian 116001, P.R. China
| | - Boris Le Guennic
- Institut des Sciences Chimiques de Rennes
- CNRS
- Université de Rennes 1
- 35042 Rennes Cedex, France
| | - Jie Ma
- State Key Laboratory of Fine Chemical
- School of Chemical Engineering
- Dalian University of Technology
- Dalian, P.R. China
| | - Caishun Zhang
- State Key Laboratory of Fine Chemical
- School of Chemical Engineering
- Dalian University of Technology
- Dalian, P.R. China
| | - Denis Jacquemin
- Laboratoire CEISAM
- UMR CNR 6230
- Université de Nantes
- 44322 Nantes Cedex 3, France
- Institut Universitaire de France
| | - Jianzhang Zhao
- State Key Laboratory of Fine Chemical
- School of Chemical Engineering
- Dalian University of Technology
- Dalian, P.R. China
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23
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Nakagawa A, Hisamatsu Y, Moromizato S, Kohno M, Aoki S. Synthesis and photochemical properties of pH responsive tris-cyclometalated iridium(III) complexes that contain a pyridine ring on the 2-phenylpyridine ligand. Inorg Chem 2013; 53:409-22. [PMID: 24341415 DOI: 10.1021/ic402387b] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In our previous publication, it was reported that fac-Ir(atpy)3 3 (atpy = 2-(5'-amino-4'-tolyl)pyridine), which contains three amino groups at the 5'-position of the atpy ligands, exhibits a pH-dependent change in the color of the emitted radiation. Aqueous solution of 3 shows a weak red emission (at around 613 nm) under neutral or basic conditions, but the emission color changes to green (at around 530 nm) under acidic conditions, where the NH2 group is protonated to become an electron-withdrawing (NH3)(+) group. In this manuscript, we report on the preparation of some new pH-responsive Ir(III) complexes; fac-Ir(4Pyppy)3 5 and fac-Ir(3Pyppy)3 6 that contain three pyridyl groups at the 5'-position of the 2-phenylpyridine (ppy) ligand, and Ir(4Pyppym)3 7 and Ir(3Pyppym)3 8 that contain a pyridyl group at the same position of the 2-phenylpyrimidine (ppym) ligand. The introduction of three pyridyl groups on iodinated Ir(ppy)3 and Ir(ppym)3 was achieved via Suzuki-Miyaura cross-coupling reaction assisted by microwave irradiation. Solutions of the acid-free Ir(III) complexes 5, 6, 7, and 8 showed a strong green emission (at around 500 nm) in dimethylsulfoxide (DMSO). Protonation of three pyridyl groups of 5 and 7 causes a significant red-shift in the emission wavelength (at around 600 nm) with a decrease in emission intensity. The pH-dependent emission change of these complexes is also discussed. The generation of singlet oxygen ((1)O2) by the photoirradiation of the Ir complexes 5 and 6 was evidenced by the decomposition of 1,3-diphenylisobenzofuran (DPBF), the oxidation of thioanisole, and the oxidation of 2,2,5,5-tetramethyl-3-pyrroline-3-carboxamide (TPC). The induction of necrosis-like cell death of HeLa-S3 cells upon photoirradiation of 5 at 465 nm is also reported.
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Affiliation(s)
- Akihiro Nakagawa
- Faculty of Pharmaceutical Sciences and ‡Center for Technologies against Cancer, Tokyo University of Science , 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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24
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You Y, Cho S, Nam W. Cyclometalated Iridium(III) Complexes for Phosphorescence Sensing of Biological Metal Ions. Inorg Chem 2013; 53:1804-15. [DOI: 10.1021/ic4013872] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Youngmin You
- Department of Advanced
Materials Engineering for Information and Electronics, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Korea
| | - Somin Cho
- Department of Bioinspired Science and Department
of Chemistry and Nano Science, Ewha Womans University, Daehyun-dong,
Seodaemun-gu, Seoul 120-750, Korea
| | - Wonwoo Nam
- Department of Bioinspired Science and Department
of Chemistry and Nano Science, Ewha Womans University, Daehyun-dong,
Seodaemun-gu, Seoul 120-750, Korea
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25
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Yang P, Wang MS, Shen JJ, Li MX, Wang ZX, Shao M, He X. Seven novel coordination polymers constructed by rigid 4-(4-carboxyphenyl)-terpyridine ligands: synthesis, structural diversity, luminescence and magnetic properties. Dalton Trans 2013; 43:1460-70. [PMID: 24212126 DOI: 10.1039/c3dt52500g] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Seven coordination polymers, namely [Mn(4-cptpy)2]n (1), [Co(4-cptpy)2]n (2), [Mn3(4-cptpy)6(H2O)]n·2nH2O (3), [Co(4-cptpy)(HCOO)(H2O)]n·nDMF (4), [Zn2(4-Hcptpy)2Cl4]n·2nC2H5OH·nH2O (5), [Co4(3-cptpy)4(HCOO)4(H2O)2]n (6), and [Mn(3-cptpy)2]n (7) (4-Hcptpy = 4-(4-carboxyphenyl)-4,2':6',4''-terpyridine; 3-Hcptpy = 4-(4-carboxyphenyl)-3,2':6',3''-terpyridine), have been synthesized under hydro(solvo)thermal conditions and structurally characterized. A general solvothermal method is proposed for preparing carboxylate complexes in DMF solution without any basic additive. 1 and 2 possess isostructural 3D metal-organic frameworks containing nanosized cavities. 3 is a beautiful 2D coordination polymer assembled by flower-like Mn3(4-cptpy)6(H2O) subunits. 4 and 6 both display 2D polymeric networks constructed from 4/3-cptpy(-) ligands, in which the formate ligands originate from the hydrolysis of DMF. 5 is a 1D 2(1) helical chain polymer. 7 shows a 2D network with a (3.6) two-nodal kgd topology. 4/3-Hcptpy ligands display seven types of coordination modes. The zinc complex 5 emits strong violet luminescence. 1 and 2 are both thermally stable below 440 °C and exhibit antiferromagnetic interactions.
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Affiliation(s)
- Peng Yang
- Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, P. R. China.
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26
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Goldstein DC, Peterson JR, Cheng YY, Clady RGC, Schmidt TW, Thordarson P. Synthesis and luminescence properties of iridium(III) azide- and triazole-bisterpyridine complexes. Molecules 2013; 18:8959-75. [PMID: 23896620 PMCID: PMC6270445 DOI: 10.3390/molecules18088959] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 07/24/2013] [Accepted: 07/24/2013] [Indexed: 11/20/2022] Open
Abstract
We describe here the synthesis of azide-functionalised iridium(III) bisterpyridines using the “chemistry on the complex” strategy. The resulting azide-complexes are then used in the copper(I)-catalysed azide-alkyne Huisgen 1,3-dipolar cycloaddition “click chemistry” reaction to from the corresponding triazole-functionalised iridium(III) bisterpyridines. The photophysical characteristics, including lifetimes, of these compounds were also investigated. Interestingly, oxygen appears to have very little effect on the lifetime of these complexes in aqueous solutions. Unexpectedly, sodium ascorbate acid appears to quench the luminescence of triazole-functionalised iridium(III) bisterpyridines, but this effect can be reversed by the addition of copper(II) sulfate, which is known to oxidize ascorbate under aerobic conditions. The results demonstrate that iridium(III) bisterpyridines can be functionalized for use in “click chemistry” facilitating the use of these photophysically interesting complexes in the modification of polymers or surfaces, to highlight just two possible applications.
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Affiliation(s)
- Daniel C. Goldstein
- School of Chemistry, The University of New South Wales, NSW 2052, Australia; E-Mails: (D.C.G.); (J.R.P.)
| | - Joshua R. Peterson
- School of Chemistry, The University of New South Wales, NSW 2052, Australia; E-Mails: (D.C.G.); (J.R.P.)
| | - Yuen Yap Cheng
- School of Chemistry, The University of Sydney, NSW 2006, Australia; E-Mails: (Y.Y.C.), (R.G.C.C.); (T.W.S.)
| | - Raphael G. C. Clady
- School of Chemistry, The University of Sydney, NSW 2006, Australia; E-Mails: (Y.Y.C.), (R.G.C.C.); (T.W.S.)
| | - Timothy W. Schmidt
- School of Chemistry, The University of Sydney, NSW 2006, Australia; E-Mails: (Y.Y.C.), (R.G.C.C.); (T.W.S.)
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, NSW 2052, Australia; E-Mails: (D.C.G.); (J.R.P.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +61-2-9385-54478; Fax: +61-2-9385-6141
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27
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Hvasanov D, Mason AF, Goldstein DC, Bhadbhade M, Thordarson P. Optimising the synthesis, polymer membrane encapsulation and photoreduction performance of Ru(II)- and Ir(III)-bis(terpyridine) cytochrome c bioconjugates. Org Biomol Chem 2013; 11:4602-12. [PMID: 23715338 DOI: 10.1039/c3ob40620b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ruthenium(II) and iridium(III) bis(terpyridine) complexes were prepared with maleimide functionalities in order to site-specifically modify yeast iso-1 cytochrome c possessing a single cysteine residue available for modification (CYS102). Single X-ray crystal structures were solved for aniline and maleimide Ru(II) 3 and Ru(II) 4, respectively, providing detailed structural detail of the complexes. Light-activated bioconjugates prepared from Ru(II) 4 in the presence of tris(2-carboxyethyl)-phosphine (TCEP) significantly improved yields from 6% to 27%. Photoinduced electron transfer studies of Ru(II)-cyt c in bulk solution and polymer membrane encapsulated specimens were performed using EDTA as a sacrificial electron donor. It was found that membrane encapsulation of Ru(II)-cyt c in PS140-b-PAA48 resulted in a quantum efficiency of 1.1 ± 0.3 × 10(-3), which was a two-fold increase relative to the bulk. Moreover, Ir(III)-cyt c bioconjugates showed a quantum efficiency of 3.8 ± 1.9 × 10(-1), equivalent to a ∼640-fold increase relative to bulk Ru(II)-cyt c.
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Affiliation(s)
- David Hvasanov
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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28
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Xu J, Yang C, Tong B, Zhang Y, Liang L, Lu M. The effects of different solvents and excitation wavelength on the photophysical properties of two novel Ir(III) complexes based on phenylcinnoline ligand. J Fluoresc 2013; 23:865-75. [PMID: 23657473 DOI: 10.1007/s10895-013-1229-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 04/30/2013] [Indexed: 11/25/2022]
Abstract
Two novel cyclometalated iridium(III) complexes, Ir(pcl)2(pic) and Ir(pcl)2(fpic) (pcl: 3-phenylcinnoline, pic: picolinic acid, fpic: 5-fluoro-2-picolinic acid) were synthesized and characterized by FTIR, (1)H NMR spectroscopy, UV-vis, PL, and MALDI-TOF. These two Ir-complexes geometry were predicted using the Sparkle/PM6 model and suggested to a chemical environment of very low symmetry around the Ir ions (C 1). The PL spectrum of Ir(pcl)2(pic) and Ir(pcl)2(fpic) indicated that these complex belonged to red light emission, and maximum emission wavelength located at 647 and 641 nm, respectively. Most importantly, the effects of different solvents on their photoluminescent properties were detailed investigated. The results indicated that the polarity of solvent played an important role for their emission spectra. With introducing fluoro group to the pyridyl ring, the maximum emission wavelength of Ir(pcl)2(fpic) was blue shifted about 6 nm, and the quantum yield was slightly higher than that of Ir(pcl)2(pic). In addition, the thermal properties of these two Ir-complexes were measured by TGA, and results indicated that they had relative good thermal properties.
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Affiliation(s)
- Jing Xu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650, People's Republic of China
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29
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Ma L, Guo S, Sun J, Zhang C, Zhao J, Guo H. Green light-excitable naphthalenediimide acetylide-containing cyclometalated Ir(iii) complex with long-lived triplet excited states as triplet photosensitizers for triplet–triplet annihilation upconversion. Dalton Trans 2013; 42:6478-88. [DOI: 10.1039/c3dt32815e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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30
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Weng J, Mei Q, Jiang W, Fan Q, Tong B, Ling Q, Huang W. Effect of pH on the photophysical properties of two new carboxylic-substituted iridium(iii) complexes. Analyst 2013; 138:1689-99. [DOI: 10.1039/c2an36298h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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31
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Yang J, Hu RX, Zhang MB. Construction of monomers and chains assembled by 3d/4f metals and 4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Zhang N, Yang J, Hu RX, Zhang MB. Syntheses and Structures of Terpyridine-Metal Complexes. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200339] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Sun J, Wu W, Zhao J. Long-Lived Room-Temperature Deep-Red-Emissive Intraligand Triplet Excited State of Naphthalimide in Cyclometalated IrIII Complexes and its Application in Triplet-Triplet Annihilation-Based Upconversion. Chemistry 2012; 18:8100-12. [DOI: 10.1002/chem.201200224] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Indexed: 01/10/2023]
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Fang SM, Chen M, Yang XG, Wang C, Du M, Liu CS. An unusual (4,10)-connected 3-D metal–organic framework based on non-planar tricarboxyl tecton and tetracadmium(ii) secondary building units. CrystEngComm 2012. [DOI: 10.1039/c2ce25194a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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You Y, Nam W. Photofunctional triplet excited states of cyclometalated Ir(iii) complexes: beyond electroluminescence. Chem Soc Rev 2012; 41:7061-84. [DOI: 10.1039/c2cs35171d] [Citation(s) in RCA: 520] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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36
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Ma L, Guo H, Li Q, Guo S, Zhao J. Visible light-harvesting cyclometalated Ir(iii) complexes as triplet photosensitizers for triplet–triplet annihilation based upconversion. Dalton Trans 2012; 41:10680-9. [DOI: 10.1039/c2dt30955f] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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