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Maity A, Mishra VK, Dolai S, Mishra S, Patra SK. Design, Synthesis, and Characterization of Organometallic BODIPY-Ru(II) Dyads: Redox and Photophysical Properties with Singlet Oxygen Generation Capability†. Inorg Chem 2024; 63:4839-4854. [PMID: 38433436 DOI: 10.1021/acs.inorgchem.3c03610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
A series of Ru(II)-acetylide complexes (Ru1, Ru2, and Ru1m) with alkynyl-functionalized borondipyrromethene (BODIPY) conjugates were designed by varying the position of the linker that connects the BODIPY unit to the Ru(II) metal center through acetylide linkage at either the 2-(Ru1) and 2,6-(Ru2) or the meso-phenyl (Ru1m) position of the BODIPY scaffold. The Ru(II) organometallic complexes were characterized by various spectroscopic methods, including nuclear magnetic resonance (NMR) spectroscopy, infrared (IR) spectroscopy, CHN, and high-resolution mass spectrometry (HRMS) analyses. The Ru(II)-BODIPY conjugates exhibit fascinating electrochemical and photophysical properties. All BODIPY-Ru(II) complexes exhibit strong absorption (εmax = 29,000-72,000 M-1 cm-1) in the visible region (λmax = 502-709 nm). Fluorescence is almost quenched for Ru1 and Ru2, whereas Ru1m shows the residual fluorescence of the corresponding BODIPY core at 517 nm. The application of the BODIPY-Ru(II) dyads as nonporphyrin-based triplet photosensitizers was explored by a method involving the singlet oxygen (1O2)-mediated photo-oxidation of diphenylisobenzofuran. Effective π-conjugation between the BODIPY chromophore and Ru(II) center in the case of Ru1 and Ru2 was found to be necessary to improve intersystem crossing (ISC) and hence the 1O2-sensitizing ability. In addition, electrochemical studies indicate electronic interplay between the metal center and the redox-active BODIPY in the BODIPY-Ru(II) dyads.
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Affiliation(s)
- Apurba Maity
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Vipin Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Suman Dolai
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Sanjib K Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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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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Ganguly T, Pal P, Maity D, Baitalik S. Synthesis, characterization and emission switching behaviors of styrylphenyl-conjugated Ru(II)-terpyridine complexes via aggregation and trans–cis photoisomerization. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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Lin Z, Li Z, Xiao W, Kong L, Xu J, Xia Y, Zhu X, Zhang F, Ou YP. Terpyridine Ruthenium-Triarylamine Asymmetrical Mixed-Valence Systems: Syntheses, (Spectro) Electrochemistry and Theoretical Calculations. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Sil A, Roy SS, Mishra VK, Islam SN, Mishra S, Patra SK. Modulation of Electrochemical and Spectroscopic Properties in Ru(II)‐Terpyridyl End‐Capped Homobimetallic Organometallic Complexes by Varying π‐Conjugated Organic Spacers. ChemistrySelect 2022. [DOI: 10.1002/slct.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amit Sil
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sourav Saha Roy
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Vipin Kumar Mishra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sk Najmul Islam
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sabyashachi Mishra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
- Centre for Computational and Data Sciences Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sanjib K. Patra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
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Zych D. DFT/TD-DFT Framework of Mixed-Metal Complexes with Symmetrical and Unsymmetrical Bridging Ligands-Step-By-Step Investigations: Mononuclear, Dinuclear Homometallic, and Heterometallic for Optoelectronic Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7783. [PMID: 34947376 PMCID: PMC8709181 DOI: 10.3390/ma14247783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/01/2021] [Accepted: 12/09/2021] [Indexed: 12/21/2022]
Abstract
Recently, mono- and dinuclear complexes have been in the interest of scientists due to their potential application in optoelectronics. Herein, progressive theoretical investigations starting from mononuclear followed by homo- and heterometallic dinuclear osmium and/or ruthenium complexes with NCN-cyclometalating bridging ligands substituted by one or two kinds of heteroaryl groups (pyrazol-1-yl and 4-(2,2-dimethylpropyloxy)pyrid-2-yl) providing the short/long axial symmetry or asymmetry are presented. Step-by-step information about the particular part that built the mixed-metal complexes is crucial to understanding their behavior and checking the necessity of their eventual studies. Evaluation by using density functional theory (DFT) calculations allowed gaining information about the frontier orbitals, energy gaps, and physical parameters of complexes and their oxidized forms. Through time-dependent density functional theory (TD-DFT), calculations showed the optical properties, with a particular emphasis on the nature of low-energy bands. The presented results are a clear indication for other scientists in the field of chemistry and materials science.
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Affiliation(s)
- Dawid Zych
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
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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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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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Affiliation(s)
- Yu‐Wu Zhong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049 China
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Liu ZN, He CX, Yin HJ, Yu SW, Xu JB, Dong JW, Liu Y, Xia SB, Cheng FX. Novel Ru(II)/Os(II)‐Exchange Homo‐ and Heterometallic Polypyridyl Complexes with Effective Energy Transfer. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zi Ning Liu
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Chi Xian He
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Hong Ju Yin
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Shi Wen Yu
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Jian Bin Xu
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Jian Wei Dong
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Yan Liu
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Shu Biao Xia
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
| | - Fei Xiang Cheng
- College of Chemistry and Environment Science Qujing Normal University 655011 Qujing P. R. China
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Zych D, Slodek A. Double NCN-cyclometalating pyrene derivatives with two kinds of substituents – Experimental and theoretical investigations. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Sil A, Ghosh U, Mishra VK, Mishra S, Patra SK. Synthesis, Structure, Electrochemical, and Spectroscopic Properties of Hetero-Bimetallic Ru(II)/Fe(II)-Alkynyl Organometallic Complexes. Inorg Chem 2019; 58:1155-1166. [PMID: 30614701 DOI: 10.1021/acs.inorgchem.8b02440] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amit Sil
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Utsav Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Vipin Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Sanjib K. Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
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Zych D, Slodek A, Matuszczyk D, Golba S. Comprehensive Study of Mononuclear Osmium Complexes with Various Pyrene Ligands. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801199] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dawid Zych
- Physics and Chemistry; University of Silesia; Szkolna 9 40-007 Katowice Poland
| | - Aneta Slodek
- Physics and Chemistry; University of Silesia; Szkolna 9 40-007 Katowice Poland
| | - Daniel Matuszczyk
- Physics and Chemistry; University of Silesia; Szkolna 9 40-007 Katowice Poland
| | - Sylwia Golba
- Institute of Materials Science; University of Silesia; 75 Pulku Piechoty 1A, 41- 500 Chorzow Poland
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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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Sil A, Roy Chowdhury S, Mishra S, Patra SK. Synthesis, structure, and photophysical and electrochemical properties of Ru(ii) complexes of arylene-vinylene terpyridyl conjugates. Dalton Trans 2018; 47:9877-9888. [PMID: 29998273 DOI: 10.1039/c8dt00881g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A series of arylene-vinylene π-conjugated terpyridyl ruthenium(ii) complexes, [Ru(PPh3)2Cl(tpy-C6H4-CH[double bond, length as m-dash]CH-Ar)][PF6] (1-4; tpy = 2,2':6',2''-terpyridyl, where Ar = phenyl, tolyl, 1-naphthyl and 9-anthracenyl as substituents at the 4' position of tpy), have been synthesized and characterized by multinuclear NMR, IR, HRMS and single crystal X-ray crystallography. The influence of the electronic nature of arylene groups on their photophysical and electrochemical properties has been investigated to understand the electronic interaction between the metal-organic redox centers. Furthermore, a σ-donor phenylacetylide group has been incorporated to accomplish [Ph-C[triple bond, length as m-dash]C-Ru(PPh3)2(tpy-C6H4-CH[double bond, length as m-dash]CH-Ar)][PF6] (5-8) complexes by the substitution of a coordinated chloride ligand and to investigate the change in their redox and photophysical properties. DFT studies have been performed to gain an insight into their electronic properties by determining the HOMO-LUMO energy levels and frontier molecular orbitals of all the synthesized Ru(ii) complexes.
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Affiliation(s)
- Amit Sil
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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Zych D, Slodek A, Golba S, Krompiec S. Cyclometalated Ruthenium, Osmium, and Iridium Complexes Bridged by an NCN–Pyrene–NCN Derivative – Synthesis and Comparison of Optical, Thermal, and Electrochemical Properties. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dawid Zych
- Institute of Chemistry Faculty of Mathematics Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
| | - Aneta Slodek
- Institute of Chemistry Faculty of Mathematics Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
| | - Sylwia Golba
- Institute of Materials Science University of Silesia 75 Pulku Piechoty 1A 41‐500 Chorzow Poland
| | - Stanisław Krompiec
- Institute of Chemistry Faculty of Mathematics Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
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17
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Mondal S, Schwederski B, Frey W, Fiedler J, Záliš S, Kaim W. At the Borderline between Metal–Metal Mixed Valency and a Radical Bridge Situation: Four Charge States of a Diruthenium Complex with a Redox-Active Bis(mer-tridentate) Ligand. Inorg Chem 2018. [DOI: 10.1021/acs.inorgchem.8b00173] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Sudipta Mondal
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Brigitte Schwederski
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Jan Fiedler
- The Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry, Dolejškova 3, 18223 Prague, Czech Republic
| | - Stanislav Záliš
- The Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry, Dolejškova 3, 18223 Prague, Czech Republic
| | - Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
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Shao JY, Gong ZL, Zhong YW. Bridged cyclometalated diruthenium complexes for fundamental electron transfer studies and multi-stage redox switching. Dalton Trans 2018; 47:23-29. [PMID: 29230470 DOI: 10.1039/c7dt04168c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four bridged cyclometalated diruthenium systems are highlighted in this Frontier article, including strongly-coupled diruthenium complexes with a short phen-1,4-diyl or a planar pyren-2,7-diyl bridge, redox asymmetric diruthenium complexes characterized by different terminal ligands on the two ends, diruthenium complexes with a urea bridge that allows modulating the degree of electronic coupling, and those with a redox-active amine bridge with varying electronic structures. These complexes posess redox couples with low potentials and intense intervalence charge transfer absorptions in the near-infrared region in the one-electron-oxidized mixed-valent state. They are appealing not only for providing a platform for fundamental electron transfer studies but also as molecular materials with multi-stage redox switching properties.
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Affiliation(s)
- Jiang-Yang Shao
- CAS Key Laboratory of Photochemistry, CAS Research/Education Centre for Excellencet in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhong-Liang Gong
- CAS Key Laboratory of Photochemistry, CAS Research/Education Centre for Excellencet in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yu-Wu Zhong
- CAS Key Laboratory of Photochemistry, CAS Research/Education Centre for Excellencet in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China and University of Chinese Academy of Sciences, Beijing 100049, China.
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Zych D, Slodek A, Pająk M, Krompiec S, Spólnik G, Danikiewicz W. Mono‐ and Diruthenium, Symmetrical and Unsymmetrical Complexes Bridged by Pyrene Derivatives: Experimental and Theoretical Studies. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700621] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dawid Zych
- Institute of Chemistry Faculty of Mathematics, Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
| | - Aneta Slodek
- Institute of Chemistry Faculty of Mathematics, Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
| | - Michał Pająk
- Institute of Chemistry Faculty of Mathematics, Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
| | - Stanisław Krompiec
- Institute of Chemistry Faculty of Mathematics, Physics and Chemistry University of Silesia Szkolna 9 40‐007 Katowice Poland
| | - Grzegorz Spólnik
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01‐224 Warszawa 42 Poland
| | - Witold Danikiewicz
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01‐224 Warszawa 42 Poland
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Li ZJ, Shao JY, Zhong YW. Near-Infrared and Two-Wavelength Electrochromism Based on Nanocrystalline TiO2 Films Functionalized with Ruthenium-Amine Conjugated Complexes. Inorg Chem 2017; 56:8538-8546. [PMID: 28654287 DOI: 10.1021/acs.inorgchem.7b01297] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhi-Juan Li
- Beijing National
Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry,
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Science, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing 100190, China
- University of Chinese Academy of Science, Beijing 100049, China
| | - Jiang-Yang Shao
- Beijing National
Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry,
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Science, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing 100190, China
| | - Yu-Wu Zhong
- Beijing National
Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry,
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Science, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing 100190, China
- University of Chinese Academy of Science, Beijing 100049, China
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21
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Zhang J, Guo SZ, Dong YB, Rao L, Yin J, Yu GA, Hartl F, Liu SH. Multistep Oxidation of Diethynyl Oligophenylamine-Bridged Diruthenium and Diiron Complexes. Inorg Chem 2017; 56:1001-1015. [PMID: 28045545 DOI: 10.1021/acs.inorgchem.6b02809] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Homo-dinuclear nonlinear complexes [{M(dppe)Cp*}2{μ-(-C≡C)2X}] (dppe = 1,2-bis(diphenylphosphino)ethane; Cp* = η5-C5Me5; X = triphenylamine (TPA), M = Ru (1a) and Fe (1b); X = N,N,N',N'-tetraphenylphenylene-1,4-diamine (TPPD), M = Ru (2a)) were prepared and characterized by 1H, 13C, and 31P NMR spectroscopy and single-crystal X-ray diffraction (1a, 2a). Attempts to prepare the diiron analogue of 2a were not successful. Experimental data obtained from cyclic voltammetry, square wave voltammetry, UV-vis-NIR (NIR = near-infrared) spectro-electrochemistry, and very informative IR spectro-electrochemistry in the C≡C stretching region, combined with density functional theory calculations, afford to make an emphasizing assessment of the close association between the metal-ethynyl termini and the oligophenylamine bridge core as well as their respective involvement in sequential one-electron oxidations of these complexes. The anodic behavior of the homo-bimetallic complexes depends strongly both on the metal center and the length of the oligophenylamine bridge core. The poorly separated first two oxidations of diiron complex 1b are localized on the electronically nearly independent Fe termini. In contrast, diruthenium complex 1a exhibits a significantly delocalized character and a marked electronic communication between the ruthenium centers through the diethynyl-TPA bridge. The ruthenium-ethynyl halves in 2a, separated by the doubly extended and more flexible TPPD bridge core, show a lower degree of electronic coupling, resulting in close-lying first two anodic waves and the NIR electronic absorption of [2a]+ with an indistinctive intervalence charge transfer character. Finally, the third anodic waves in the voltammetric responses of the homo-bimetallic complexes are associated with the concurrent exclusive oxidation of the TPA or TPPD bridge cores.
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Affiliation(s)
- Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Shen-Zhen Guo
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Yu-Bao Dong
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Li Rao
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Jun Yin
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Guang-Ao Yu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - František Hartl
- Department of Chemistry, University of Reading , Whiteknights, Reading RG6 6AD, U.K
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
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22
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Bhattacharyya S, Purkait K, Mukherjee A. Ruthenium(ii) p-cymene complexes of a benzimidazole-based ligand capable of VEGFR2 inhibition: hydrolysis, reactivity and cytotoxicity studies. Dalton Trans 2017. [DOI: 10.1039/c7dt00938k] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ru(ii)-p-Cymene complexes of a bispyrazole-benzimidazole ligand inhibit vascular endothelial growth factor 2, reduce the cellular glutathione pool and inhibit cell migration.
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Affiliation(s)
- Sudipta Bhattacharyya
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- Nadia-741246
- India
| | - Kallol Purkait
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- Nadia-741246
- India
| | - Arindam Mukherjee
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- Nadia-741246
- India
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23
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24
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Shao JY, Yao CJ, Cui BB, Gong ZL, Zhong YW. Electropolymerized films of redox-active ruthenium complexes for multistate near-infrared electrochromism, ion sensing, and information storage. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.05.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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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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26
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Tang JH, Yao CJ, Cui BB, Zhong YW. Ruthenium-Amine Conjugated Organometallic Materials for Multistate Near-IR Electrochromism and Information Storage. CHEM REC 2016; 16:754-67. [DOI: 10.1002/tcr.201500252] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Jian-Hong Tang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; 2 Bei Yi Jie Zhong Guan Cun Beijing 100190 P. R. China
| | - Chang-Jiang Yao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; 2 Bei Yi Jie Zhong Guan Cun Beijing 100190 P. R. China
| | - Bin-Bin Cui
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; 2 Bei Yi Jie Zhong Guan Cun Beijing 100190 P. R. China
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; 2 Bei Yi Jie Zhong Guan Cun Beijing 100190 P. R. China
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27
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Synthesis, crystal structure and electronic properties of [3.3]metaparacyclophane-bridged bimetallic ruthenium alkynyl complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Zhang J, Sun CF, Zhang MX, Hartl F, Yin J, Yu GA, Rao L, Liu SH. Asymmetric oxidation of vinyl- and ethynyl terthiophene ligands in triruthenium complexes. Dalton Trans 2016; 45:768-82. [DOI: 10.1039/c5dt04083c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Newly synthesized open-triangle triruthenium vinyl and ethynyl terthiophene complexes exhibit stepwise laterally localized oxidation processes, as revealed by UV-vis-NIR and IR spectroelectrochemistry.
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Affiliation(s)
- Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Chao-Fang Sun
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Ming-Xing Zhang
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - František Hartl
- Department of Chemistry
- University of Reading
- Reading RG6 6AD
- UK
| | - Jun Yin
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Guang-Ao Yu
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Li Rao
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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29
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Kurata R, Tanaka K, Ito A. Isolation and Characterization of Persistent Radical Cation and Dication of 2,7-Bis(dianisylamino)pyrene. J Org Chem 2015; 81:137-45. [PMID: 26690970 DOI: 10.1021/acs.joc.5b02425] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Orbital interaction between 2,7-pyrenylene and two nitrogen redox-active centers effectively reduces the energy difference between HOMO and HOMO-1, both of which were distributed over the two nitrogen centers. In fact, one- and two-electron oxidation of 2,7-bis(dianisylamino)pyrene 3 generated a persistent radical cation and a persistent dication, respectively, and we succeeded in the isolation and single crystal X-ray structural analyses of all three oxidation states. The radical cation was considered as a spin and charge delocalized mixed-valence compound with a semiquinoidal structure. The dication was in an open-shell singlet state with a small singlet-triplet energy gap. The molecular and electronic structures for all three oxidation states of 3 were studied in comparison with the data reported for each oxidation state of closely related bis(triarylamine)s, of which structures were determined by X-ray crystallography.
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Affiliation(s)
- Ryohei Kurata
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuyoshi Tanaka
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Akihiro Ito
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
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30
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Cheng W, Wang X, Xia J. Synthesis and characterization of binuclear ruthenium vinyl complexes: effect of transannular substituents on their optoelectronic properties. TRANSIT METAL CHEM 2015. [DOI: 10.1007/s11243-015-9974-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Shao JY, Fu N, Yang WW, Zhang CY, Zhong YW, Lin Y, Yao J. Cyclometalated ruthenium(ii) complexes with bis(benzimidazolyl)benzene for dye-sensitized solar cells. RSC Adv 2015. [DOI: 10.1039/c5ra20294a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The length of alkyl chains on the benzimidazole rings of cyclometalated ruthenium dyes is critical to the DSSC performance.
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Affiliation(s)
- Jiang-Yang Shao
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Nianqing Fu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Wen-Wen Yang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chun-Yu Zhang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yuan Lin
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Jiannian Yao
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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