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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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Peng Y, Da X, Zhou W, Xu Y, Liu X, Wang X, Zhou Q. A photo-degradable BODIPY-modified Ru(II) photosensitizer for safe and efficient PDT under both normoxic and hypoxic conditions. Dalton Trans 2024; 53:3579-3588. [PMID: 38314620 DOI: 10.1039/d3dt04063a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
Photodynamic therapy (PDT) is promising for cancer treatment but still suffers from some limitations. For instance, PDT based on 1O2 generation (in a type-II mechanism) is heavily dependent on high oxygen concentrations and will be significantly depressed in hypoxic tumors. In addition, the residual photosensitizers after PDT treatment may cause severe side-effects under light irradiation. To solve these problems, herein a BODIPY (boron dipyrromethene)-modified Ru(II) complex [Ru(dip)2(tpy-BODIPY)]2+ (complex 1, dip = 4,7-diphenyl-1,10-phenanthroline, tpy = 2,2':6',2''-terpyridine) was designed and synthesized. Complex 1 exhibited both high singlet oxygen quantum yield (Φ = 0.7 in CH3CN) and excellent superoxide radical (O2˙-) generation, and thus demonstrated efficient PDT activity under both normoxic and hypoxic conditions. Moreover, complex 1 is photo-degradable in water, and greatly loses its ROS generation ability after PDT treatment. These novel properties of complex 1 make it promising for efficient PDT under both normoxic and hypoxic conditions with reduced side-effects.
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Affiliation(s)
- Yatong Peng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xuwen Da
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
| | - Wanpeng Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yunli Xu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiulian Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xuesong Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Qianxiong Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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Bhattacharya S, Pal P, Baitalik S. Design of molecular sensors and switches based on luminescent ruthenium-terpyridine complexes bearing active methylene and triphenylphosphonium motifs as anion recognition sites: experimental and DFT/TD-DFT investigation. Dalton Trans 2024; 53:1307-1321. [PMID: 38115813 DOI: 10.1039/d3dt03681b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Synthesis, characterization and thorough investigation of the photophysical and electrochemical properties of a new category of emissive homo- and heteroleptic Ru(II)-complexes derived from the [4'-(p-triphenylphosphonium methyl phenyl)-2,2':6',2''-terpyridine]bromide (tpy-PhCH2PPh3Br) ligand have been executed in this work. Incorporation of the PhCH2PPh3+Br- group at the terpyridine motif appropriately adjusts the triplet metal-to-ligand charge transfer (3MLCT) and metal-centered (3MC) excited states so that the complexes luminesce at room temperature (RT) having lifetimes within the range of 6.82-9.63 ns. The RT emission characteristics of the complexes get further enhanced via aggregation phenomena through the use of different solvent/non-solvent mixtures (DMSO/H2O and DMSO/PhCH3 mixtures). Temperature dependent emission spectral measurements indicate that the emission intensity, quantum yield and lifetime increase upon dropping down the temperature, thereby designated as the on-state, while the increase of temperature causes a reduction of the said properties, indicating the off-state and the process is fully reversible. Taking advantage of the active methylene group coupled with a phosphonium motif, anion sensing characteristics of the complexes are investigated systematically in DMSO through the use of various optical channels and spectroscopic tools. The complexes are very much sensitive to fluoride and to a lesser extent acetate and dihydrogen phosphate among the studied anions. In essence, the complexes function as sensors for temperature and fluoride ion. Computational investigations were also executed via density functional theory (DFT) and time-dependent (TD)-DFT to obtain a clear understanding of the electronic structures of the metalloreceptors, appropriate assignment of the spectral bands and their mode of interaction with selected anions.
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Affiliation(s)
- Sohini Bhattacharya
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
| | - Poulami Pal
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & B Raja S C Mullick Road, Kolkata 700032, India
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
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Matsumoto W, Naito M, Danjo H. Preparation of spiroborate supramolecular and peapod polymers containing a photoluminescent ruthenium(ii) complex. RSC Adv 2023; 13:25002-25006. [PMID: 37622015 PMCID: PMC10445220 DOI: 10.1039/d3ra03940d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023] Open
Abstract
The immobilization of functional metal complexes onto polymer supports remains one of the most important research areas. In this study, we prepared spiroborate supramolecular and peapod polymers containing a cationic photoluminescent ruthenium(ii) complex. The supramolecular polymer was obtained by mixing spiroborate cyclic trimer bearing homoallyl group and a ruthenium(ii) tris(bipyridyl) complex, and was further converted into the corresponding peapod polymer by olefin metathesis polymerization. The structure of these polymers was determined by 1H NMR, dynamic light scattering, inductively coupled plasma-atomic emission spectroscopy, energy dispersive X-ray analyses, and atomic force microscopy. The absorption and emission behaviors of the ruthenium(ii) complex were almost the same for the free form and the supramolecular polymer in the mixed solvent of N,N-dimethylformamide and chloroform, although the emission intensity decreased when the chloroform portion was increased. On the other hand, the hypsochromism was observed upon the emission of the ruthenium(ii) complex in the peapod polymer, probably due to the rigidochromic effect of the tight encapsulation by the peapod structure.
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Affiliation(s)
- Wako Matsumoto
- Graduate School of Natural Science, Konan University 8-9-1 Okamoto, Higashinada Kobe 658-8501 Japan
| | - Muneyuki Naito
- Department of Chemistry, Konan University 8-9-1 Okamoto, Higashinada Kobe 658-8501 Japan
| | - Hiroshi Danjo
- Department of Chemistry, Konan University 8-9-1 Okamoto, Higashinada Kobe 658-8501 Japan
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Deb S, Sahoo A, Mondal P, Baitalik S. Analysis and prediction of anion- and temperature responsive behaviours of luminescent Ru(II)-terpyridine complexes by using Boolean, fuzzy logic, artificial neural network and adapted neuro fuzzy inference models. Dalton Trans 2022; 51:15601-15613. [PMID: 36169624 DOI: 10.1039/d2dt02611b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anion- and temperature responsive behaviors of three luminescent Ru(II)-terpyridine complexes are utilized here to demonstrate multiple Boolean (BL) and fuzzy logic (FL) operations. Taking advantage of the imidazole NH protons, anion-promoted alteration of the photophysical characteristics of the complexes was thoroughly investigated via absorption, and emission spectral and lifetime measurements. In their free state, the complexes display luminescence representing the "on-state", whereas quenching of luminescence is observed with anions demonstrating the "off-state". Likewise, lowering of temperature induces a substantial increase of luminescence and lifetime demonstrating the "on-state", while the increase of temperature induces a significant decrease of emission intensity and lifetime indicating the "off-state" and the process is reversible in both cases. The complexes thus can act as anion- and temperature-responsive molecular switches. The spectral signatures of the complexes under the influence of anions and temperature were employed to mimic multiple BL and FL functions. Performing very detailed sensing studies by varying the analyte concentration within a wide domain is very tedious, time-consuming and expensive. In order to overcome the lacuna, we implemented machine learning and soft computing tools such as artificial neural networks (ANNs), fuzzy-logic and adaptive neuro-fuzzy inference system (ANFIS) to predict the experimental anion sensing data of the complexes.
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Affiliation(s)
- Sourav Deb
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
| | - Anik Sahoo
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
| | - Priyam Mondal
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
| | - Sujoy Baitalik
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
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Yoon S, Teets TS. Enhanced deep red to near-infrared (DR-NIR) phosphorescence in cyclometalated iridium( iii) complexes. Inorg Chem Front 2022. [DOI: 10.1039/d2qi02058k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Bis-cyclometalated iridium complexes with highly conjugated cyclometalating ligands and electron-rich ancillary ligands have exceptional quantum yields for deep-red to near-infrared phosphorescence.
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Affiliation(s)
- Sungwon Yoon
- University of Houston, Department of Chemistry, 3585 Cullen Blvd., Room 112, Houston, TX 77204-5003, USA
| | - Thomas S. Teets
- University of Houston, Department of Chemistry, 3585 Cullen Blvd., Room 112, Houston, TX 77204-5003, USA
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Nemati Bideh B, Shahroosvand H. New Molecularly Engineered Binuclear Ruthenium (II) Complexes for Highly Efficient Near-Infrared Light-Emitting Electrochemical Cell (NIR-LEC). Dalton Trans 2022; 51:3652-3660. [DOI: 10.1039/d1dt03212g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract: From practical point of view, the stability, response time and efficiency of near-infrared light-emitting electrochemical cell (NIR-LEC) are key factors. By using the high potential of chemical modification potential...
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Rupp MT, Shevchenko N, Hanan GS, Kurth DG. Enhancing the photophysical properties of Ru(II) complexes by specific design of tridentate ligands. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214127] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Paul A, Das S, Bar M, Baitalik S. Tuning of photo-redox behaviours and thermodynamic and kinetic aspects of intercomponent energy transfer in trimetallic complexes of Ru(II) and Os(II) by exploiting their second coordination sphere. Dalton Trans 2021; 50:14872-14883. [PMID: 34604872 DOI: 10.1039/d1dt02544a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper deals with a thorough investigation of pH-induced tuning of the ground and excited state photophysical as well as electrochemical behaviours of two series of our recently reported homo- and heterotrimetallic complexes of the type [(bpy)2Ru(d-HIm-t)M(t-HIm-d)Ru(bpy)2]6+ and [(bpy)2Os(d-HIm-t)M(t-HIm-d)Os(bpy)2]6+ (M = RuII and OsII) derived from a heteroditopic bpy-tpy (d-HIm-t) type bridging ligand through the exploitation of their second coordination sphere. A small bathochromic shift of the absorption and emission spectral band along with substantial alteration of emission intensity and lifetime of the triads is noted upon deprotonation of the NH motifs at elevated pH values. The lowering of the half wave potential of a M3+/M2+ couple is also observed upon removal of the NH protons. Both ground and excited state pKa values of the triads are estimated from their absorption/emission versus pH spectral profiles. In addition, the variation of the free energy change (ΔG) and the rate of intercomponent energy transfer (ken) in the triads upon stepwise deprotonation of the NH motifs are also addressed in the present study.
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Affiliation(s)
- Animesh Paul
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
| | - Soumi Das
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
| | - Manoranjan Bar
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
| | - Sujoy Baitalik
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
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Low-cost photo-switches based on stilbene-appended Zn(II)-terpyridine complexes. Photochem Photobiol Sci 2021; 20:1125-1145. [PMID: 34449076 DOI: 10.1007/s43630-021-00085-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/30/2021] [Indexed: 12/29/2022]
Abstract
We report herein the synthesis, characterization, photophysics, and photo-isomerization behaviors of three Zn(II)-terpyridine complexes of the type [Zn(tpy-pvp-X)2]2+ (X = H, Me, and NO2) covalently tethered with stilbene moiety. The complexes exhibit absorption bands stretching up to the edge of the visible domain due to ligand → ligand charge transfer (LLCT) transitions and strong emission at room temperature in the visible due to radiative deactivation of 3LLCT state having lifetime within 1.0-3.0 ns. The stilbene motifs in the complexes undergo trans to cis isomerization upon irradiating with UV and visible light accompanied by significant alteration of their absorption, emission, and 1H NMR spectral profiles. Apart from the variation of electron donating and electron withdrawing substituent (X), the isomerization studies were also carried out in three different solvents (DCM, MeCN, and DMSO) to further tune their kinetic and thermodynamic parameters. The rate, rate constant and quantum yield of isomerization were estimated in all the solvents. The reverse process (cis to trans) also occurs very slowly on keeping but could be accelerated upon heating. Trans to cis photoisomerization leads to quenching of emission in case of 1 and 2, whereas backward thermal cis to trans conversion leads to restoration of emission. By contrast, for the nitro-derivative (3) forward process induces emission enhancement, while backward process gives rise to emission quenching. In essence, "on-off" and "off-on" emission switching is feasible for 1 and 2, whereas "off-on" and "on-off" emission switching occurs in case of 3. Emission spectral responses upon successive action of photonic and thermal input lead to the fabrication of INHIBIT and IMPLICATION logic gates. DFT and TD-DFT computational investigations were also undertaken to visualize their electronic structures, correct assignment of the spectral bands, and mode of isomerization process.
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Nemati Bideh B, Shahroosvand H, Nazeeruddin MK. High-Efficiency Deep-Red Light-Emitting Electrochemical Cell Based on a Trinuclear Ruthenium(II)-Silver(I) Complex. Inorg Chem 2021; 60:11915-11922. [PMID: 34324327 DOI: 10.1021/acs.inorgchem.1c00852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Turn-on time is a key factor for lighting devices to be of practical application. To decrease the turn-on time value of a deep-red light-emitting electrochemical cells (DR-LECs), two novel approaches based on molecularly engineered ruthenium phenanthroimidazole complexes were introduced. First, we found that with the incorporation of ionic methylpyridinium group to phenanthroimidazole ligand, the turn-on time of the DR-LECs device was dramatically reduced, from 79 to 27 s. By complexation of ruthenium emitter with Ag+, the turn-on time was improved by 85%, and the EQE of DR-device was increased from 0.62 to 0.71%. These results open a new avenue in decreasing the turn-on time without adding ionic electrolytes, leading to an efficient LEC.
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Affiliation(s)
- Babak Nemati Bideh
- Group for Molecular Engineering of Advanced Functional Materials (GMA), Chemistry Department, University of Zanjan, Zanjan 45371-38791, Iran
| | - Hashem Shahroosvand
- Group for Molecular Engineering of Advanced Functional Materials (GMA), Chemistry Department, University of Zanjan, Zanjan 45371-38791, Iran
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1951 Sion, Switzerland
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Deb S, Sahoo A, Ahmed T, Baitalik S. Stimuli-Responsive Molecular Switches and Logic Devices Based on Ru(II)-Terpyridyl-Imidazole Coordination Motif. J Phys Chem B 2021; 125:8919-8931. [PMID: 34323072 DOI: 10.1021/acs.jpcb.1c05305] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report herein the synthesis, photophysics, and electrochemistry of three Ru(II)-terpyridine complexes derived from a new terpyridyl-imidazole ligand (tpy-HImzPh3F2) and study their pH- and temperature-responsive behaviors toward the fabrication of molecular switches. The complexes emitted at room temperature (RT) have a lifetime within the 4.5-49.0 ns domain, depending on the auxiliary ligand and the solvent used. In the acidic region, the complexes exhibit emission, indicating the "on-state", while in the basic condition, the emission is totally quenched, indicating the "off-state". Similarly, when the temperature is lowered, the emission intensity and lifetime are enhanced, demonstrating the on-state, while increase of temperature leads to quenching of the emission intensity and lifetime, designated as the off-state. In both cases, the process is reversible. The bathochromic shift of the spectral band together with the emission quenching and lowering of the Ru3+/Ru2+ potential is also observed upon deprotonation at elevated pH. In addition, systematic variation of the absorption spectral behaviors upon variation of pH helps in evaluation of the pKa's of the complexes. In essence, the complexes can act as switches emanated from a huge change in their absorption, emission, and redox behaviors as a function of their acidity/basicity (pH) and temperature. Moreover, their emission spectral responses as a function of pH and temperature were utilized for the fabrication of two-input binary logic gates. Density-functional theory (DFT) and time-dependent density-functional theory (TD-DFT) computations are performed for appropriate interpretation of the spectral bands.
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Affiliation(s)
- Sourav Deb
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Anik Sahoo
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Toushique Ahmed
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Sujoy Baitalik
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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Deb S, Sahoo A, Pal P, Baitalik S. Exploitation of the Second Coordination Sphere to Promote Significant Increase of Room-Temperature Luminescence Lifetime and Anion Sensing in Ruthenium-Terpyridine Complexes. Inorg Chem 2021; 60:6836-6851. [PMID: 33885303 DOI: 10.1021/acs.inorgchem.1c00821] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper deals with the synthesis, characterization, and photophysical behaviors of three Ru(II)-terpyridine complexes derived from a terpyridyl-imidazole ligand (tpy-HImzPh3Me2), wherein a terpyridine moiety has been coupled with a dimethylbenzil unit through a phenylimidazole spacer. The three complexes display strong emission at RT having excited-state lifetimes in the range of 2.3-43.7 ns, depending upon the co-ligand present and the solvents used. Temperature-dependent emission spectral measurements have demonstrated that the energy separation between emitting metal-to-ligand charge transfer state and non-emitting metal-centered state is increased relative to that of [Ru(tpy)2]2+. In contrast to our previously studied Ru(II) complexes containing similar terpyridyl-imidazole motif but differing by peripheral methyl groups, significant enhancement of RT emission intensity and quantum yield and remarkable increase of emission lifetime occur for the present complexes upon protonation of the imidazole nitrogen(s) with perchloric acid. Additionally, by exploiting imidazole NH motif(s), we have examined their anion recognition behaviors in organic and aqueous media. Interestingly, the complexes are capable of visually recognizing cyanide ions in aqueous medium up to the concentration limit of 10-8 M. Computational studies involving density functional theory (DFT) and time-dependent DFT methods have been carried out to obtain insights into their electronic structures and to help with the assignment of absorption and emission bands.
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Affiliation(s)
- Sourav Deb
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Anik Sahoo
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Poulami Pal
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Sujoy Baitalik
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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Choroba K, Maroń A, Switlicka A, Szłapa-Kula A, Siwy M, Grzelak J, Maćkowski S, Pedzinski T, Schab-Balcerzak E, Machura B. Carbazole effect on ground- and excited-state properties of rhenium(i) carbonyl complexes with extended terpy-like ligands. Dalton Trans 2021; 50:3943-3958. [PMID: 33645614 DOI: 10.1039/d0dt04340k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The ground- and excited-state properties of three novel complexes [ReCl(CO)3(Ln-κ2N)] bearing 2,2':6',2''-terpyridine, 2,6-di(thiazol-2-yl)pyridine and 2,6-di(pyrazin-2-yl)pyridine functionalized with 9-carbazole attached to the central pyridine ring of the triimine core via phenylene linkage were investigated by spectroscopic and electrochemical methods and were simulated using density functional theory (DFT) and time-dependent DFT. To get a deeper and broader understanding of structure-property relationships, the designed Re(i) carbonyl complexes were compared with previously reported analogous systems - without any groups attached to the phenyl ring and bearing pyrrolidine instead of 9-carbazole. The results indicated that attachment of the N-carbazolyl substituent to the triimine core has less influence on the nature of the triplet excited state of [ReCl(CO)3(Ln-κ2N)] than the pyrrolidine group. Additionally, the impact of the ligand structural modifications on the light emission of the Re(i) complexes under external voltage was preliminarily examined with electroluminescence spectra of diodes containing the synthesized new molecules in an active layer.
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Affiliation(s)
- Katarzyna Choroba
- Institute of Chemistry, University of Silesia, 9th Szkolna St., 40-006 Katowice, Poland.
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Pal P, Ganguly T, Das S, Baitalik S. pH-Responsive colorimetric, emission and redox switches based on Ru(ii)-terpyridine complexes. Dalton Trans 2021; 50:186-196. [PMID: 33290452 DOI: 10.1039/d0dt03537h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have undertaken a thorough investigation on pH-responsive optical and redox switching behaviors of our recently reported trans form of bis-tridentate Ru(ii) luminophores, [(H2pbbzim)Ru(tpy-pvp-X)]2+ where X = H, Me, Cl, NO2, and Ph. The complexes possess two benzimidazole protons in their second coordination sphere, which became acidic upon coordinating influence of Ru2+ and could be successively deprotonated with the increase of pH. The effect of pH on photophysical and electrochemical behaviours of the complexes was thoroughly studied. Substantial quenching of emission together with the red-shift of both absorption (color change) and emission bands is noticed for all complexes upon dissociation of NH protons. Absorption vs. pH data were employed for determination of ground-state pKa values, while excited-state pKa (pKa*) values were estimated by employing the Förster cycle based equation. The electronic nature of X induces a small but finite effect on the pKa values and a linear correlation is found by plotting pKavs. Hammett σp parameters of X. Proton-coupled electrochemical behaviours were investigated within the pH range of 1-10. From the E1/2vs. pH plot, acid dissociation constants in different protonation states of the complexes were estimated in both Ru2+ and Ru3+ states. Compared with their protonated forms which exhibit reversible oxidation within 0.91-0.95 V, the oxidation potential of the doubly deprotonated forms shifted remarkably to the cathodic region (0.61-0.66 V). In essence, the present complexes act as potential pH-responsive colorimetric, emission and redox switches.
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Affiliation(s)
- Poulami Pal
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
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16
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Liu B, Gao Y, Jabed MA, Kilina S, Liu G, Sun W. Lysosome Targeting Bis-terpyridine Ruthenium(II) Complexes: Photophysical Properties and In Vitro Photodynamic Therapy. ACS APPLIED BIO MATERIALS 2020; 3:6025-6038. [DOI: 10.1021/acsabm.0c00647] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Yibo Gao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P. R. China
| | - Mohammed A. Jabed
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Guoquan Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P. R. China
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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17
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Moll J, Wang C, Päpcke A, Förster C, Resch‐Genger U, Lochbrunner S, Heinze K. Green-Light Activation of Push-Pull Ruthenium(II) Complexes. Chemistry 2020; 26:6820-6832. [PMID: 32162414 PMCID: PMC7318647 DOI: 10.1002/chem.202000871] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/09/2020] [Indexed: 11/07/2022]
Abstract
Synthesis, characterization, electrochemistry, and photophysics of homo- and heteroleptic ruthenium(II) complexes [Ru(cpmp)2 ]2+ (22+ ) and [Ru(cpmp)(ddpd)]2+ (32+ ) bearing the tridentate ligands 6,2''-carboxypyridyl-2,2'-methylamine-pyridyl-pyridine (cpmp) and N,N'-dimethyl-N,N'-dipyridin-2-ylpyridine-2,6-diamine (ddpd) are reported. The complexes possess one (32+ ) or two (22+ ) electron-deficient dipyridyl ketone fragments as electron-accepting sites enabling intraligand charge transfer (ILCT), ligand-to-ligand charge transfer (LL'CT) and low-energy metal-to-ligand charge transfer (MLCT) absorptions. The latter peak around 544 nm (green light). Complex 22+ shows 3 MLCT phosphorescence in the red to near-infrared spectral region at room temperature in deaerated acetonitrile solution with an emission quantum yield of 1.3 % and a 3 MLCT lifetime of 477 ns, whereas 32+ is much less luminescent. This different behavior is ascribed to the energy gap law and the shape of the parasitic excited 3 MC state potential energy surface. This study highlights the importance of the excited-state energies and geometries for the actual excited-state dynamics. Aromatic and aliphatic amines reductively quench the excited state of 22+ paving the way to photocatalytic applications using low-energy green light as exemplified with the green-light-sensitized thiol-ene click reaction.
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Affiliation(s)
- Johannnes Moll
- Department of ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Cui Wang
- Division 1.2 BiophotonicsFederal Institute for Materials Research and Testing (BAM)Richard Willstätter-Straße 1112489BerlinGermany
- Institut für Chemie und BiochemieFreie Universität BerlinArnimallee 2214195BerlinGermany
| | - Ayla Päpcke
- Institute for Physics and Department of Life, Light and MatterUniversity of Rostock18051RostockGermany
| | - Christoph Förster
- Department of ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Ute Resch‐Genger
- Division 1.2 BiophotonicsFederal Institute for Materials Research and Testing (BAM)Richard Willstätter-Straße 1112489BerlinGermany
| | - Stefan Lochbrunner
- Institute for Physics and Department of Life, Light and MatterUniversity of Rostock18051RostockGermany
| | - Katja Heinze
- Department of ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
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18
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Franklin LM, Walker SM, Hill G. A DFT study of isolated histidine interactions with metal ions (Ni 2+, Cu 2+, Zn 2+) in a six-coordinated octahedral complex. J Mol Model 2020; 26:116. [PMID: 32377871 DOI: 10.1007/s00894-020-04389-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 04/22/2020] [Indexed: 10/24/2022]
Abstract
Understanding the role that metal ions play in biological and material processes is critical to addressing a number of diseases and problems facing society today. There have been a number of studies that have begun to approach this concern from a myriad of different perspectives. However, there is still a considerable lack of understanding concerning the mechanisms and structures of metal-related problems, specifically biological and medical-related issues. Understanding the mechanism of ingestion and uptake of metals into the human body is critical to addressing many diseases such as Alzheimer's and certain types of cancers. Using computational techniques, this work adds to the overall understanding of metal interactions with proteins by focusing on metal ion interactions with the amino acid, histidine, one of the most common sites of metal attachment. In this work, the geometries of single and dual histidines attached to Ni2+, Cu2+, and Zn2+ ions at B3LYP/6-311G(d) are presented. The results show stable octahedral complexes associated with each of the metal ions. Free energy calculations suggest that all three complexes are spontaneous in the formation of the dual histidine-metal complexes. Nickel and copper are spontaneous in the formation of the single histidine complex, although the copper complex undergoes slight geometric changes. Zinc is found to be nonspontaneous in forming the single histidine complex. Finally, the reduction potential of the single histidine-metal complex is presented. All of the complexes show positive reduction potentials. However, the nickel and copper complexes undergo geometrical changes to adopt a square planar conformation. Graphical abstract The impact of metal ions in biological systems is of great importance to understanding a diverse number of diseases. By understanding the fundamentals of select ions complexed with histidines, greater understanding of the mechanisms of actions these ions play in health may be elucidated. This work presents initial structures and thermodynamics of histidine complexes with nickel, copper, and zinc metal ions.
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Affiliation(s)
- Latasha M Franklin
- Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, Jackson, MS, 39217, USA
| | - Sharnek M Walker
- Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, Jackson, MS, 39217, USA
| | - Glake Hill
- Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, Jackson, MS, 39217, USA.
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19
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Maroń AM, Szlapa-Kula A, Matussek M, Kruszynski R, Siwy M, Janeczek H, Grzelak J, Maćkowski S, Schab-Balcerzak E, Machura B. Photoluminescence enhancement of Re(i) carbonyl complexes bearing D-A and D-π-A ligands. Dalton Trans 2020; 49:4441-4453. [PMID: 32181459 DOI: 10.1039/c9dt04871e] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Three Re(i) carbonyl complexes [ReCl(CO)3(Ln)] bearing 2,2'-bipyridine, 2,2':6',2''-terpyridine, and 1,10-phenanthroline functionalized with diphenylamine/or triphenylamine units (L1-L3) were synthesized to explore the impact of highly electron donating units appended to the imine ligand on the thermal and optoelectronic properties of Re(i) systems. Additionally, for comparison, the ligands L1-3 and parent complexes [ReCl(CO)3(bipy)], [ReCl(CO)3(phen)] and [ReCl(CO)3(terpy-κ2N)] were investigated. The thermal stability was evaluated by differential scanning calorimetry. The ground- and excited-state electronic properties of the Re(i) complexes were studied by cyclic voltammetry and differential pulse voltammetry, absorption and emission spectroscopy, as well as using density-functional theory (DFT). The majority of the compounds form amorphous molecular materials with high glass transition temperatures above 100 °C. Compared to the unsubstituted complexes [ReCl(CO)3(bipy)], [ReCl(CO)3(phen)] and [ReCl(CO)3(terpy-κ2N)], the HOMO-LUMO gap of the corresponding Re(i) systems bearing modified imine ligands is reduced, and the decrease in the value of the ΔEH-L is mainly caused by the increase in HOMO energy level. In relation to the parent complexes, all designed Re(i) carbonyls were found to show enhanced photoluminescence, both in solution and in solid state. The investigated ligands and complexes were also preliminarily tested as luminophores in light emitting diodes with the structures ITO/PEDOT:PSS/compound/Al and ITO/PEDOT:PSS/PVK:PBD:compound/Al. The pronounced effect of the ligand chemical structure on electroluminescence ability was clearly visible.
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Affiliation(s)
- Anna M Maroń
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia, 9th Szkolna Street, 40006, Katowice, Poland.
| | - Agata Szlapa-Kula
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia, 9th Szkolna Street, 40006, Katowice, Poland.
| | - Marek Matussek
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia, 9th Szkolna Street, 40006, Katowice, Poland.
| | - Rafal Kruszynski
- Institute of General and Ecological Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Mariola Siwy
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland
| | - Justyna Grzelak
- Nanophotonics Group, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, 5 Grudziadzka Str., 87-100, Torun, Poland
| | - Sebastian Maćkowski
- Nanophotonics Group, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, 5 Grudziadzka Str., 87-100, Torun, Poland
| | - Ewa Schab-Balcerzak
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia, 9th Szkolna Street, 40006, Katowice, Poland. and Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Str., 41-819, Zabrze, Poland
| | - Barbara Machura
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia, 9th Szkolna Street, 40006, Katowice, Poland.
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20
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Experimental and theoretical exploration of photophysics and trans-cis photoisomerization of styrylbenzene conjugated terpyridine complexes of Ru(II): Strong effect of deprotonation from second coordination sphere. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112409] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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21
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Kleoff M, Suhr S, Sarkar B, Zimmer R, Reissig H, Marin‐Luna M, Zipse H. Efficient Syntheses of New Super Lewis Basic Tris(dialkylamino)‐Substituted Terpyridines and Comparison of Their Methyl Cation Affinities. Chemistry 2019; 25:7526-7533. [DOI: 10.1002/chem.201900450] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/27/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Merlin Kleoff
- Institut für Chemie und BiochemieFreie Universität Berlin Takustr. 3 14195 Berlin Germany
| | - Simon Suhr
- Institut für Chemie und BiochemieFreie Universität BerlinAnorganische Chemie Fabeckstr. 34–36 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und BiochemieFreie Universität BerlinAnorganische Chemie Fabeckstr. 34–36 14195 Berlin Germany
| | - Reinhold Zimmer
- Institut für Chemie und BiochemieFreie Universität Berlin Takustr. 3 14195 Berlin Germany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und BiochemieFreie Universität Berlin Takustr. 3 14195 Berlin Germany
| | - Marta Marin‐Luna
- Department ChemieLudwig-Maximilians-Universität München Butenandtstr. 5–13 81377 München Germany
| | - Hendrik Zipse
- Department ChemieLudwig-Maximilians-Universität München Butenandtstr. 5–13 81377 München Germany
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22
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Luis ET, Iranmanesh H, Beves JE. Photosubstitution reactions in ruthenium(II) trisdiimine complexes: Implications for photoredox catalysis. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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23
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Alig L, Fritz M, Schneider S. First-Row Transition Metal (De)Hydrogenation Catalysis Based On Functional Pincer Ligands. Chem Rev 2018; 119:2681-2751. [PMID: 30596420 DOI: 10.1021/acs.chemrev.8b00555] [Citation(s) in RCA: 493] [Impact Index Per Article: 82.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The use of 3d metals in de/hydrogenation catalysis has emerged as a competitive field with respect to "traditional" precious metal catalyzed transformations. The introduction of functional pincer ligands that can store protons and/or electrons as expressed by metal-ligand cooperativity and ligand redox-activity strongly stimulated this development as a conceptual starting point for rational catalyst design. This review aims at providing a comprehensive picture of the utilization of functional pincer ligands in first-row transition metal hydrogenation and dehydrogenation catalysis and related synthetic concepts relying on these such as the hydrogen borrowing methodology. Particular emphasis is put on the implementation and relevance of cooperating and redox-active pincer ligands within the mechanistic scenarios.
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Affiliation(s)
- Lukas Alig
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Maximilian Fritz
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Sven Schneider
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
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24
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The role of the anion in the charge transfer properties of mixed-valent biferrocene. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Pal P, Mukherjee S, Maity D, Baitalik S. Synthesis, Photophysics, and Switchable Luminescence Properties of a New Class of Ruthenium(II)-Terpyridine Complexes Containing Photoisomerizable Styrylbenzene Units. ACS OMEGA 2018; 3:14526-14537. [PMID: 31458137 PMCID: PMC6645016 DOI: 10.1021/acsomega.8b01927] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/19/2018] [Indexed: 06/10/2023]
Abstract
We report here the synthesis and structural characterization of a new class of homoleptic terpyridine complexes of Ru(II) containing styrylbenzene moieties to improve room-temperature luminescence properties. Solid-state structure determination of 2 was done through single-crystal X-ray diffraction. Tuning of photophysical properties was done by incorporating both electron-donating and electron-withdrawing substituents in the ligand. The complexes exhibit strong emission having lifetimes in the range of 10.0-158.5 ns, dependent on the substituent and the solvent. Good correlations were also observed between Hammett σp parameters with the lifetimes of the complexes. Styrylbenzene moieties in the complexes induce trans-trans to trans-cis isomerization accompanied by huge alteration of their spectral profiles upon treating with UV light. Reversal of trans-cis to trans-trans forms was also achieved on interacting with visible light. Change from trans-trans to the corresponding trans-cis form leads to emission quenching, whereas trans-cis to the corresponding trans-trans form leads to restoration of emission. In essence, "on-off" and "off-on" photoswitching of luminescence was observed. Calculations involving density functional theory (DFT) and time-dependent-DFT methods were performed to understand the electronic structures as well as for appropriate assignment of the absorption and emission bands.
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Affiliation(s)
- Poulami Pal
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Shruti Mukherjee
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Dinesh Maity
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
- Department
of Chemistry, Katwa College, Purba Bardhaman, West Bengal 713130, India
| | - Sujoy Baitalik
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
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26
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Bar M, Deb S, Paul A, Baitalik S. Stimuli-Responsive Luminescent Bis-Tridentate Ru(II) Complexes toward the Design of Functional Materials. Inorg Chem 2018; 57:12010-12024. [PMID: 30238750 DOI: 10.1021/acs.inorgchem.8b01562] [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
We report here the synthesis, characterization, and photophysics of two bis-tridentate Ru(II) complexes based on a heteroditopic ligand and thoroughly studied their stimuli-responsive behaviors toward the design of functional materials. Both complexes display emission at room temperature having lifetimes in the range of 0.5-70.0 ns, depending on coligand and solvent. Substantial modulations of absorption and emission spectral behaviors of the complexes were done upon interaction with anions, and anion-induced changes in the properties lead to recognition of selected anions in both organic and aqueous media. Photophysical properties of the complexes were also tuned by changing the pH of the medium, and p Ka values in both ground and excited states were determined. The presence of free pyridine-imidazole motifs in the complexes leads to substantial modulation of the optical properties and switching of the emission properties upon interaction with selected cations as well as with protons. Fe2+, Co2+, Ni2+, and Cu2+ trigger emission quenching, while Zn2+ induces finite enhancement of the emission intensity in the complexes. In essence, modulation of the optical properties and switching of luminescence properties of the complexes were accomplished by a variety of the external stimuli such as anions, cations, protons, and pH, as well as solvent polarity. Importantly, the optical outputs in response to an appropriate set of stimuli were utilized to mimic the functions of two-input IMPLICATION, NOR, and XNOR logic gates.
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Affiliation(s)
- Manoranjan Bar
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
| | - Sourav Deb
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
| | - Animesh Paul
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
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27
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28
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Otto S, Förster C, Wang C, Resch-Genger U, Heinze K. A Strongly Luminescent Chromium(III) Complex Acid. Chemistry 2018; 24:12555-12563. [DOI: 10.1002/chem.201802797] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/02/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Sven Otto
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Materials Science in Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Christoph Förster
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Cui Wang
- Division 1.2 Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard Willstätter-Straße 11 12489 Berlin Germany
- Institut für Chemie und Biochemie; Freie Universität Berlin; 14195 Berlin Germany
| | - Ute Resch-Genger
- Division 1.2 Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard Willstätter-Straße 11 12489 Berlin Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
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29
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Metallo-Supramolecular Polymers Made of Cobalt and 3,4-Propylenedioxythiophene-Bisterpyridine Complexes for Electrochromic Applications. Macromol Res 2018. [DOI: 10.1007/s13233-018-6107-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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30
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Pal P, Mukherjee S, Maity D, Baitalik S. Synthesis, Structural Characterization, and Luminescence Switching of Diarylethene-Conjugated Ru(II)-Terpyridine Complexes by trans-cis Photoisomerization: Experimental and DFT/TD-DFT Investigation. Inorg Chem 2018; 57:5743-5753. [PMID: 29701476 DOI: 10.1021/acs.inorgchem.7b03096] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We synthesized and thoroughly characterized a new family of diarylethene-conjugated mononuclear Ru(II)-terpyridine complexes and investigated in detail their photophysical, electrochemical, and spectroelectrochemical behaviors. Interestingly, the compounds show moderately strong room-temperature luminescence predominantly from their 3MLCT state with luminescence lifetime varying between 8.43 and 22.82 ns. Because of the presence of diarylethene unit, all the monometallic complexes underwent trans-to-cis photoisomerization upon interaction with UV light with substantial changes in their absorption and luminescence spectra. Reverting back from the cis to the trans form is also made possible upon treatment with visible light or by heat. Trans-to-cis isomerization leads to almost complete quenching of luminescence, while backward cis-to-trans isomerization gives rise to restoration of the original luminescence for all the complexes. Thus, "on-off" and "off-on" emission switching was made possible upon successive interaction of the complexes with UV and visible light. Computational investigation involving density functional theory (DFT) and time-dependent DFT methods was done for proper assignment of the experimental absorption and emission spectral bands in the complexes. Finally, experimentally observed trend on the absorption and emission spectral behaviors of the complexes upon photoisomerization was also compared with the calculated results.
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Affiliation(s)
- Poulami Pal
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
| | - Shruti Mukherjee
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
| | - Dinesh Maity
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section , Jadavpur University , Kolkata 700032 , India
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31
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Rapp TL, Highley CB, Manor BC, Burdick JA, Dmochowski IJ. Ruthenium-Crosslinked Hydrogels with Rapid, Visible-Light Degradation. Chemistry 2018; 24:2328-2333. [PMID: 29161461 PMCID: PMC5915374 DOI: 10.1002/chem.201704580] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Indexed: 11/08/2022]
Abstract
Incorporation of photoresponsive molecules within soft materials can provide spatiotemporal control over bulk properties and address challenges in targeted delivery and mechanical variability. However, the kinetics of in situ photochemical reactions are often slow and typically employ ultraviolet wavelengths. Here, we present a novel photoactive crosslinker Ru(bipyridine)2 (3-pyridinaldehyde)2 (RuAldehyde), which was reacted with hydrazide-functionalized hyaluronic acid to form hydrogels capable of encapsulating protein cargo. Visible light irradiation (400-500 nm) initiated rapid ligand exchange on the ruthenium center, which degraded the hydrogel within seconds to minutes, depending on gel thickness. An exemplar enzyme cargo, TEM1 β-lactamase, was loaded into and photoreleased from the Ru-hydrogel. To expand their applications, Ru-hydrogels were also processed into microgels using a microfluidic platform.
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Affiliation(s)
- Teresa L Rapp
- Department of Chemistry, University of Pennsylvania, 231 S 34th St., Philadelphia, PA, USA
| | - Christopher B Highley
- Department of Bioengineering, University of Pennsylvania, 210 S 33rd St, Philadelphia, PA, USA
| | - Brian C Manor
- Department of Chemistry, University of Pennsylvania, 231 S 34th St., Philadelphia, PA, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, 210 S 33rd St, Philadelphia, PA, USA
| | - Ivan J Dmochowski
- Department of Chemistry, University of Pennsylvania, 231 S 34th St., Philadelphia, PA, USA
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32
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Aghazada S, Zimmermann I, Ren Y, Wang P, Nazeeruddin MK. Bis-Tridentate-Cyclometalated Ruthenium Complexes with Extended Anchoring Ligand and Their Performance in Dye-Sensitized Solar Cells. ChemistrySelect 2018. [DOI: 10.1002/slct.201703138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sadig Aghazada
- Group for Molecular Engineering of Functional Materials; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL); CH-1950 Sion Switzerland
| | - Iwan Zimmermann
- Group for Molecular Engineering of Functional Materials; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL); CH-1950 Sion Switzerland
| | - Yameng Ren
- Center for Chemistry of Novel & High-performance Materials; Department of Chemistry; Zhejiang University, 310028, Hangzhou, China
- Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 130022 Changchun China
| | - Peng Wang
- Center for Chemistry of Novel & High-performance Materials; Department of Chemistry; Zhejiang University, 310028, Hangzhou, China
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL); CH-1950 Sion Switzerland
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33
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Wang C, Otto S, Dorn M, Kreidt E, Lebon J, Sršan L, Di Martino-Fumo P, Gerhards M, Resch-Genger U, Seitz M, Heinze K. Deuterierter molekularer Rubin mit Rekord-Lumineszenzquantenausbeute. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711350] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cui Wang
- Fachbereich Biophotonik; Bundesanstalt für Materialforschung und -prüfung (BAM); Richard-Willstätter-Str. 11 12489 Berlin Deutschland
- Institut für Chemie und Biochemie; Freie Universität Berlin; 14195 Berlin Deutschland
| | - Sven Otto
- Institut für Anorganische Chemie und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
- Graduiertenschule Materials Science in Mainz - MAINZ; Staudingerweg 9 55128 Mainz Deutschland
| | - Matthias Dorn
- Institut für Anorganische Chemie und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Elisabeth Kreidt
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Jakob Lebon
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Laura Sršan
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Patrick Di Martino-Fumo
- Department of Chemistry and Research Center Optimas; Universität Kaiserslautern; Erwin-Schrödinger-Str. 67663 Kaiserslautern Deutschland
| | - Markus Gerhards
- Department of Chemistry and Research Center Optimas; Universität Kaiserslautern; Erwin-Schrödinger-Str. 67663 Kaiserslautern Deutschland
| | - Ute Resch-Genger
- Fachbereich Biophotonik; Bundesanstalt für Materialforschung und -prüfung (BAM); Richard-Willstätter-Str. 11 12489 Berlin Deutschland
| | - Michael Seitz
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Katja Heinze
- Institut für Anorganische Chemie und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
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34
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Wang C, Otto S, Dorn M, Kreidt E, Lebon J, Sršan L, Di Martino-Fumo P, Gerhards M, Resch-Genger U, Seitz M, Heinze K. Deuterated Molecular Ruby with Record Luminescence Quantum Yield. Angew Chem Int Ed Engl 2018; 57:1112-1116. [DOI: 10.1002/anie.201711350] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Indexed: 01/29/2023]
Affiliation(s)
- Cui Wang
- Division Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
- Institut für Chemie und Biochemie; Freie Universität Berlin; 14195 Berlin Germany
| | - Sven Otto
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Materials Science in Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Matthias Dorn
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Elisabeth Kreidt
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Jakob Lebon
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Laura Sršan
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Patrick Di Martino-Fumo
- Department of Chemistry and Research Center Optimas; University Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Markus Gerhards
- Department of Chemistry and Research Center Optimas; University Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Ute Resch-Genger
- Division Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
| | - Michael Seitz
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
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35
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Otto S, Moll J, Förster C, Geißler D, Wang C, Resch-Genger U, Heinze K. Three-in-One Crystal: The Coordination Diversity of Zinc Polypyridine Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700948] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sven Otto
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Materials Science in Mainz; 55128 Mainz Germany
| | - Johannes Moll
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Christoph Förster
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Daniel Geißler
- Division 1.10 Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
| | - Cui Wang
- Division 1.10 Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
- Freie Universität Berlin; 14195 Berlin Germany
| | - Ute Resch-Genger
- Division 1.10 Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
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36
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Synthesis, structural characterization and catalytic activity of indenyl complexes of ruthenium bearing fluorinated phosphine ligands. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.03.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Singh P, Rana PJS, Kar P. Effect of electron withdrawing substituent and extended π- conjugation on photophysical properties of Ruthenium polyterpyridine D-P-A complexes and interfacial studies with semiconducting TiO 2 nanoparticle: Experimental and computational evidences. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.06.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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Ponseca CS, Chábera P, Uhlig J, Persson P, Sundström V. Ultrafast Electron Dynamics in Solar Energy Conversion. Chem Rev 2017; 117:10940-11024. [DOI: 10.1021/acs.chemrev.6b00807] [Citation(s) in RCA: 211] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Carlito S. Ponseca
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Pavel Chábera
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Jens Uhlig
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Petter Persson
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Villy Sundström
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
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39
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Wu SH, Shao JY, Dai X, Cui X, Su H, Zhong YW. Synthesis and Characterization of Tris(bidentate) Ruthenium Complexes of Di(pyrid-2-yl)(methyl)amine. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700291] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Si-Hai Wu
- School of Biomedical Sciences; Huaqiao University; 362021 Quanzhou Fujian China
| | - Jiang-Yang Shao
- Beijing National Laboratory for Molecular Sciences; CAS Research/Education Center for Excellence in Molecular Sciences; Chinese Academy of Sciences; 100190 Beijing China
| | - Xiaojuan Dai
- Beijing National Laboratory for Molecular Sciences; CAS Research/Education Center for Excellence in Molecular Sciences; Chinese Academy of Sciences; 100190 Beijing China
- University of Chinese Academy of Sciences; 100049 Beijing China
| | - Xiuling Cui
- School of Biomedical Sciences; Huaqiao University; 362021 Quanzhou Fujian China
| | - Hongmei Su
- Beijing National Laboratory for Molecular Sciences; CAS Research/Education Center for Excellence in Molecular Sciences; Chinese Academy of Sciences; 100190 Beijing China
- University of Chinese Academy of Sciences; 100049 Beijing China
- College of Chemistry; Beijing Normal University; 100875 Beijing China
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences; CAS Research/Education Center for Excellence in Molecular Sciences; Chinese Academy of Sciences; 100190 Beijing China
- University of Chinese Academy of Sciences; 100049 Beijing China
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40
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Mondal D, Biswas S, Paul A, Baitalik S. Luminescent Dinuclear Ruthenium Terpyridine Complexes with a Bis-Phenylbenzimidazole Spacer. Inorg Chem 2017; 56:7624-7641. [PMID: 28654273 DOI: 10.1021/acs.inorgchem.6b02937] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A conjugated bis-terpyridine bridging ligand, 2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-6-(2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-1H-benzo[d]imidazol-6-yl)-1H-benzo[d] imidazole (tpy-BPhBzimH2-tpy), was designed in this work by covalent coupling of 3,3'-diaminobenzidine and two 4'-(p-formylphenyl)-2,2':6',2″-terpyridine units to synthesize a new series of bimetallic Ru(II)-terpyridine light-harvesting complexes. Photophysical and electrochemical properties were modulated by the variation of the terminal ligands in the complexes. The new compounds were thoroughly characterized by 1H NMR spectroscopy, high-resolution mass spectrometry, and elemental analysis. Absorption spectra of the complexes consist of very strong ligand-centered π-π* and n-π* transitions in the UV, metal-to-ligand, and intraligand charge transfer bands in the visible regions. Steady-state and time-resolved emission spectral measurements indicate that the complexes exhibit moderately intense luminescence at room temperature within the spectral domain of 653-687 nm having luminescence lifetimes in the range between 6.3 and 55.2 ns, depending upon terminal tridentate ligand and solvent. Variable-temperature luminescence measurements suggest substantial increase of the energy gap between luminescent 3metal-to-ligand charge transfer state and nonluminescent 3metal centered in the complexes compared to the parent [Ru(tpy)2]2+. Each of the three bimetallic complexes exhibits only one reversible couple in the positive potential window with almost no detectable splitting corresponding to simultaneous oxidation of the two remote Ru centers. All the complexes possess a number of imidazole NH protons, which became sufficiently acidic upon metal ion coordination. By utilizing these NH protons, we thoroughly studied anion recognition properties of the complexes in pure organic as well as predominantly aqueous media through multiple optical channels and spectroscopic methods. Finally computation investigations employing density functional theory (DFT) and time-dependent DFT were done to examine the electronic structures of the complexes and accurate assignment of experimentally observed optical spectral bands.
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Affiliation(s)
- Debiprasad Mondal
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Sourav Biswas
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Animesh Paul
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
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41
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Otto S, Nauth AM, Ermilov E, Scholz N, Friedrich A, Resch-Genger U, Lochbrunner S, Opatz T, Heinze K. Photo-Chromium: Sensitizer for Visible-Light-Induced Oxidative C−H Bond Functionalization-Electron or Energy Transfer? CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700077] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sven Otto
- Institute of Inorganic and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Materials Science in Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Alexander M. Nauth
- Institute of Organic Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Eugenyi Ermilov
- Division 1.10; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Str. 11 12489 Berlin Germany
| | - Norman Scholz
- Division 1.10; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Str. 11 12489 Berlin Germany
| | - Aleksej Friedrich
- Institute of Physics, University of Rostock; Albert-Einstein-Str. 23 18059 Rostock Germany
| | - Ute Resch-Genger
- Division 1.10; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Str. 11 12489 Berlin Germany
| | - Stefan Lochbrunner
- Institute of Physics, University of Rostock; Albert-Einstein-Str. 23 18059 Rostock Germany
| | - Till Opatz
- Institute of Organic Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Katja Heinze
- Institute of Inorganic and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
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42
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Wirelike dinuclear ruthenium(II)polyterpyridine complexes based on D–P–A architecture: Experimental and theoretical investigation. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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43
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Ghasemi E, Alimardani E, Shams E, Koohmareh GA. Modification of glassy carbon electrode with iron-terpyridine complex and iron-terpyridine complex covalently bonded to ordered mesoporous carbon substrate: Preparation, electrochemistry and application to H 2 O 2 determination. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.01.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Lee YH, Shin JW, Sekimoto Y, Hayami S, Harrowfield J, Kim Y. Crystal Structure of a Heterometallic Luminophore: The RuII Complex of a Ferrocenyl-Terpyridine with a Flexible Linkage. Aust J Chem 2017. [DOI: 10.1071/ch16577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Crystal structure determination on the mixed ligand complex [Ru(tpy)(L1)](ClO4)2 (tpy = 2,2′:6′,2″-terpyridine; L1 = 4′-(ferrocenylmethylaminomethylphenyl)terpyridine) shows the ferrocenyl group to be located as remotely as possible from the RuII centre. This may explain the fact that emission from the RuII centre is detectable even at room temperature in solution.
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45
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Siewert B, Langerman M, Hontani Y, Kennis JTM, van Rixel VHS, Limburg B, Siegler MA, Talens Saez V, Kieltyka RE, Bonnet S. Turning on the red phosphorescence of a [Ru(tpy)(bpy)(Cl)]Cl complex by amide substitution: self-aggregation, toxicity, and cellular localization of an emissive ruthenium-based amphiphile. Chem Commun (Camb) 2017; 53:11126-11129. [DOI: 10.1039/c7cc02989f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Dodecylamide functionalization of [Ru(tpy)(bpy)Cl]Cl led to an emissive, self-assembling, and cytotoxic complex targeting membranes.
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Affiliation(s)
- B. Siewert
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
- Institute of Pharmacy
| | - M. Langerman
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
| | - Y. Hontani
- Department of Physics and Astronomy
- Vrije Universiteit
- De Boelelaan 1081
- 1081HV Amsterdam
- The Netherlands
| | - J. T. M. Kennis
- Department of Physics and Astronomy
- Vrije Universiteit
- De Boelelaan 1081
- 1081HV Amsterdam
- The Netherlands
| | - V. H. S. van Rixel
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
| | - B. Limburg
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
| | - M. A. Siegler
- Small Molecule X-ray Facility, Department of Chemistry Johns Hopkins University
- Baltimore
- USA
| | - V. Talens Saez
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
| | - R. E. Kieltyka
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
| | - S. Bonnet
- Leiden Institute of Chemistry
- Leiden University
- 233CC Leiden
- The Netherlands
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46
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Zhang Y, Hauke CE, Crawley MR, Schurr BE, Fulong CRP, Cook TR. Increasing phosphorescent quantum yields and lifetimes of platinum-alkynyl complexes with extended conjugation. Dalton Trans 2017; 46:9794-9800. [DOI: 10.1039/c7dt01817g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Designing platinum-alkynyl complexes to access a metallo-cumulene resonance form increases the quantum yield via increased rigidity.
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Affiliation(s)
- Yuzhen Zhang
- Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Cory E. Hauke
- Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Matthew R. Crawley
- Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Bradley E. Schurr
- Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Cressa Ria P. Fulong
- Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Timothy R. Cook
- Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
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47
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Liu LH, Wu D, Xia SH, Cui G. Theoretical study on photooxidation mechanism of ruthenium complex [Ru(II)-(bpy)2 (TMBiimH2 )](2+) with molecular oxygen. J Comput Chem 2016; 37:2212-9. [PMID: 27384925 DOI: 10.1002/jcc.24448] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 06/10/2016] [Accepted: 06/13/2016] [Indexed: 11/09/2022]
Abstract
Photoinduced reactions of ruthenium complexes with molecular oxygen have attracted a lot of experimental attention; however, the reaction mechanism remains elusive. In this work, we have used the density functional theory method to scrutinize the visible-light induced photooxidation mechanism of the ruthenium complex [Ru(II)-(bpy)2 (TMBiimH2 )](2+) (bpy: 2, 2-bipyridine and TMBiimH2 : 4, 5, 4, 5-tetramethyl-2, 2-biimidazole) initiated by the attack of molecular oxygen. The present computational results not only explain very well recent experiments, also provide new mechanistic insights. We found that: (1) the triplet energy transfer process between the triplet molecular oxygen and the metal-ligand charge transfer triplet state of the ruthenium complex, which leads to singlet molecular oxygen, is thermodynamically favorable; (2) the singlet oxygen addition process to the S0 ruthenium complex is facile in energy; (3) the chemical transformation from endoperoxide to epidioxetane intermediates can be either two- or one-step reaction (the latter is energetically favored). These findings contribute important mechanistic information to photooxidation reactions of ruthenium complexes with molecular oxygen. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Li-Hong Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Dan Wu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Shu-Hua Xia
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
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48
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Hommes P, Reissig HU. Synthesis and Photophysical Properties of Substituted 2,2′:6′,2′′-Terpyridine Derivatives and Analogous Compounds with a Central Thiophene Ring. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600215] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paul Hommes
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
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49
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Kreitner C, Mengel AKC, Lee TK, Cho W, Char K, Kang YS, Heinze K. Strongly Coupled Cyclometalated Ruthenium Triarylamine Chromophores as Sensitizers for DSSCs. Chemistry 2016; 22:8915-28. [DOI: 10.1002/chem.201601001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Christoph Kreitner
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Duesbergweg 10-14 55128 Mainz Germany), Fax: (+49) 6131-39-27-277
- Graduate School Materials Science in Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Andreas K. C. Mengel
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Duesbergweg 10-14 55128 Mainz Germany), Fax: (+49) 6131-39-27-277
| | - Tae Kyung Lee
- The Department of Energy Engineering and Center for; Next Generation Dye-Sensitized Solar Cells; Hanyang University; 222 Wangsimni-ro, Seongdong-gu Seoul 133-791 Korea
| | - Woohyung Cho
- The Department of Energy Engineering and Center for; Next Generation Dye-Sensitized Solar Cells; Hanyang University; 222 Wangsimni-ro, Seongdong-gu Seoul 133-791 Korea
| | - Kookheon Char
- The National Creative Research Initiative Center for Intelligent; Hybrids, School of Chemical and Biological Engineering, Seoul; National University; 1 Gwanak-ro, Gwanak-gu Seoul 151-744 Korea
| | - Yong Soo Kang
- The Department of Energy Engineering and Center for; Next Generation Dye-Sensitized Solar Cells; Hanyang University; 222 Wangsimni-ro, Seongdong-gu Seoul 133-791 Korea
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Duesbergweg 10-14 55128 Mainz Germany), Fax: (+49) 6131-39-27-277
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50
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Zhong YW, Gong ZL, Shao JY, Yao J. Electronic coupling in cyclometalated ruthenium complexes. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.01.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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