1
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Lei J, Liu Y, Yin M, Li S, Wang Z, Chen Y. Coordination environment dependence of anticancer activity in cyclometalated bismuth(III) complexes with C,O-chelating ligands. J Inorg Biochem 2024; 256:112571. [PMID: 38669912 DOI: 10.1016/j.jinorgbio.2024.112571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024]
Abstract
In this paper, a series of cyclometalated bismuth(III) complexes bearing C,O-bidentate ligands were synthesized and characterized by techniques such as UV-vis, NMR, HRMS, and single crystal X-ray diffraction. Meanwhile, their cytotoxicities against various human cell lines, including colon cancer cells (HCT-116), breast cancer cells (MDA-MB-231), lung cancer cells (A549), gastric cancer cells (SGC-7901), and normal embryonic kidney cells (HEK-293) were assessed in vitro. Compared with the clinical cisplatin, most of the synthesized complexes possessed significantly higher degrees of anticancer activity and selectivity, giving a selectivity index of up to 71.3. The structure-activity relationship study revealed that the anticancer performance of these bismuth(III) species depends on the factors of coordination environment surrounding the metal center, such as coordination number, coordination bonding strength, lone 6s2 electron pair stereoactivity. The Annexin V-FITC/PI double staining assay results suggested that the coordination environment-dependent cytotoxicity is ascribable to apoptosis. Western blot analysis confirmed the proposal, as evidenced by the down-regulating level of Bcl-2 and the activation of caspase-3. Furthermore, the representative complexes Bi1, Bi4, Bi6, and Bi8 exhibited relatively lower inhibitory efficiency on human ovarian cancer cells (A2780) than on its cisplatin-resistant daughter cells (A2780/cis), thus demonstrating that such compounds are capable of circumventing the cisplatin-induced resistance. This investigation elucidated the excellent anticancer performance of C,O-coordinated bismuth(III) complexes and established the correlation between cytotoxic activity and coordination chemistry, which provides a practical basis for in-depth designing and developing bismuth-based chemotherapeutics.
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Affiliation(s)
- Jian Lei
- School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, PR China; Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Disease of the Ministry of Education, Key Laboratory for Tissue Engineering of Jiangxi Province, College of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Yongping Liu
- School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Mingming Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Shan Li
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Disease of the Ministry of Education, Key Laboratory for Tissue Engineering of Jiangxi Province, College of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Zixiu Wang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Disease of the Ministry of Education, Key Laboratory for Tissue Engineering of Jiangxi Province, College of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Yi Chen
- School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, PR China.
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2
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Zhao JS, Mu YF, Wu LY, Luo ZM, Velasco L, Sauvan M, Moonshiram D, Wang JW, Zhang M, Lu TB. Directed Electron Delivery from a Pb-Free Halide Perovskite to a Co(II) Molecular Catalyst Boosts CO 2 Photoreduction Coupled with Water Oxidation. Angew Chem Int Ed Engl 2024; 63:e202401344. [PMID: 38422378 DOI: 10.1002/anie.202401344] [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: 01/19/2024] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
The development of high-performance photocatalytic systems for CO2 reduction is appealing to address energy and environmental issues, while it is challenging to avoid using toxic metals and organic sacrificial reagents. We here immobilize a family of cobalt phthalocyanine catalysts on Pb-free halide perovskite Cs2AgBiBr6 nanosheets with delicate control on the anchors of the cobalt catalysts. Among them, the molecular hybrid photocatalyst assembled by carboxyl anchors achieves the optimal performance with an electron consumption rate of 300±13 μmol g-1 h-1 for visible-light-driven CO2-to-CO conversion coupled with water oxidation to O2, over 8 times of the unmodified Cs2AgBiBr6 (36±8 μmol g-1 h-1), also far surpassing the documented systems (<150 μmol g-1 h-1). Besides the improved intrinsic activity, electrochemical, computational, ex-/in situ X-ray photoelectron and X-ray absorption spectroscopic results indicate that the electrons photogenerated at the Bi atoms of Cs2AgBiBr6 can be directionally transferred to the cobalt catalyst via the carboxyl anchors which strongly bind to the Bi atoms, substantially facilitating the interfacial electron transfer kinetics and thereby the photocatalysis.
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Affiliation(s)
- Jin-Shuang Zhao
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Yan-Fei Mu
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Li-Yuan Wu
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Zhi-Mei Luo
- School of Chemical Engineering and Technology, Sun Yat-sen University, 519082, Zhuhai, China
| | - Lucia Velasco
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz, 3, 28049, Madrid, Spain
| | - Maxime Sauvan
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz, 3, 28049, Madrid, Spain
| | - Dooshaye Moonshiram
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz, 3, 28049, Madrid, Spain
| | - Jia-Wei Wang
- School of Chemical Engineering and Technology, Sun Yat-sen University, 519082, Zhuhai, China
| | - Min Zhang
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Tong-Bu Lu
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, 300384, Tianjin, China
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3
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Wang JW, Ma F, Jin T, He P, Luo ZM, Kupfer S, Karnahl M, Zhao F, Xu Z, Jin T, Lian T, Huang YL, Jiang L, Fu LZ, Ouyang G, Yi XY. Homoleptic Al(III) Photosensitizers for Durable CO 2 Photoreduction. J Am Chem Soc 2023; 145:676-688. [PMID: 36538810 DOI: 10.1021/jacs.2c11740] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Exploiting noble-metal-free systems for high-performance photocatalytic CO2 reduction still presents a key challenge, partially due to the long-standing difficulties in developing potent and durable earth-abundant photosensitizers. Therefore, based on the very cheap aluminum metal, we have deployed a systematic series of homoleptic Al(III) photosensitizers featuring 2-pyridylpyrrolide ligands for CO2 photoreduction. The combined studies of steady-state and time-resolved spectroscopy as well as quantum chemical calculations demonstrate that in anerobic CH3CN solutions at room temperature, visible-light excitation of the Al(III) photosensitizers leads to an efficient population of singlet excited states with nanosecond-scale lifetimes and notable emission quantum yields (10-40%). The results of transient absorption spectroscopy further identified the presence of emissive singlet and unexpectedly nonemissive triplet excited states. More importantly, the introduction of methyl groups at the pyrrolide rings can greatly improve the visible-light absorption, reducing power, and durability of the Al(III) photosensitizers. With triethanolamine, BIH (1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole), and an Fe(II)-quaterpyridine catalyst, the most methylated Al(III) photosensitizer achieves an apparent quantum efficiency of 2.8% at 450 nm for selective (>99%) CO2-to-CO conversion, which is nearly 28 times that of the unmethylated one (0.1%) under identical conditions. The optimal system realizes a maximum turnover number of 10250 and higher robustness than the systems with Ru(II) and Cu(I) benchmark photosensitizers. Quenching experiments using fluorescence spectroscopy elucidate that the photoinduced electron transfer in the Al(III)-sensitized system follows a reductive quenching pathway. The remarkable tunability and cost efficiency of these Al(III) photosensitizers should allow them as promising components in noble-metal-free systems for solar fuel conversion.
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Affiliation(s)
- Jia-Wei Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Tarragona43007, Spain
| | - Fan Ma
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Piao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Zhi-Mei Luo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Tarragona43007, Spain
| | - Stephan Kupfer
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, Jena07743, Germany
| | - Michael Karnahl
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Braunschweig38106, Germany
| | - Fengyi Zhao
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Zihao Xu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College, Shantou515041, China
| | - Long Jiang
- KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou510275, China
| | - Li-Zhi Fu
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Gangfeng Ouyang
- KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou510275, China
| | - Xiao-Yi Yi
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
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4
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Lei Y, Jiang J, Li X, Li Q, Li C. A nine‐coordinated bismuth(III) Schiff‐base complex: Design, synthesis, computational studies, and antimicrobial activity. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yan‐Hua Lei
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds and Applications, College of Chemical Biology and Environmental Engineering Xiangnan University Chenzhou Hunan Province China
| | - Jian‐Hong Jiang
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds and Applications, College of Chemical Biology and Environmental Engineering Xiangnan University Chenzhou Hunan Province China
| | - Xu Li
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds and Applications, College of Chemical Biology and Environmental Engineering Xiangnan University Chenzhou Hunan Province China
| | - Qiang‐Guo Li
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds and Applications, College of Chemical Biology and Environmental Engineering Xiangnan University Chenzhou Hunan Province China
| | - Chuan‐Hua Li
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds and Applications, College of Chemical Biology and Environmental Engineering Xiangnan University Chenzhou Hunan Province China
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5
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Maurer LA, Pearce OM, Maharaj FDR, Brown NL, Amador CK, Damrauer NH, Marshak MP. Open for Bismuth: Main Group Metal-to-Ligand Charge Transfer. Inorg Chem 2021; 60:10137-10146. [PMID: 34181403 DOI: 10.1021/acs.inorgchem.0c03818] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The synthesis, characterization, and photophysical properties of 4- and 6-coordinate Bi3+ coordination complexes are reported. Bi(bzq)3 (1) and [Bi(bzq)2]Br (2) (bzq = benzo[h]quinoline) are synthesized by reaction of 9-Li-bzq with BiCl3 and BiBr3, respectively. Absorption spectroscopy, electrochemistry, and DFT studies suggest that 1 has 42% Bi 6s character in its highest-occupied molecular orbital (HOMO) as a result of six σ* interactions with the bzq ligands. Excitation of 1 at 450 nm results in a broad emission feature at 520 nm, which is rationalized as a metal-to-ligand charge transfer (MLCT) and phosphorescent emission resulting from bismuth-mediated intersystem crossing (ISC) to a triplet excited state. This excited state revealed a 35 μs lifetime and was quenched in the presence of oxygen. These results demonstrate that useful optoelectronic properties of Bi3+ can be accessed through hypercoordination with covalent organobismuth interactions that mimic the electronic structure of lead perovskites.
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Affiliation(s)
- Laura A Maurer
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Orion M Pearce
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Franklin D R Maharaj
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Niamh L Brown
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Camille K Amador
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Niels H Damrauer
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States.,Renewable and Sustainable Energy Institute, Boulder, Colorado 80309, United States
| | - Michael P Marshak
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States.,Renewable and Sustainable Energy Institute, Boulder, Colorado 80309, United States
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6
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Villamizar C. CP, Anzaldo B, Sharma P, Gutiérrez Pérez R, del Río-Portilla F, Toscano AR. Chiral Ferrocenyl-Bismuthines containing N/O donor pendant arm: Syntheses and molecular structures. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Amarne H, Helal W, Wang S. Synthesis, structure and density functional theory calculations of a novel photoluminescent trisarylborane-bismuth(III) complex. LUMINESCENCE 2019; 34:731-738. [PMID: 31251465 DOI: 10.1002/bio.3667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/12/2019] [Accepted: 05/28/2019] [Indexed: 11/09/2022]
Abstract
A novel trisarylborane-Bi(III) complex, tris(4-(dimesitylboryl)phenyl)bismuthine [Bi(PhBMes2 )3 ], in which (Ph = phenyl, and Mes = mesityl), was synthesized via the reaction of bismuth (III) chloride (BiCl3 ) with three equivalents of lithiated (4-bromophenyl)- dimesitylborane [BrPhBMes2 ]. The new trisarylbismuthine was characterized by elemental analysis, ultraviolet-visible (UV-vis) spectroscopy, and NMR (1 H and 13 C) spectroscopy. The molecular structure of Bi(PhBMes2 )3 in the solid state was determined using single-crystal X-ray diffraction analysis, which showed short intermolecular C-H···H-C contact. The complex is a fluorescent emitter (λmax = 395 nm) at room temperature and a phosphorescent emitter (λmax = 423 nm) at 77 K, which displayed a long lifetime of 495 ms. The UV-vis transitions were investigated using density function theory (DFT) and time-dependent (TD)-DFT calculations. Natural bond orbital analysis showed that the bismuth (III) center was mainly Lewis acidic in nature.
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Affiliation(s)
- Hazem Amarne
- Department of Chemistry, The University of Jordan, Amman, Jordan
| | - Wissam Helal
- Department of Chemistry, The University of Jordan, Amman, Jordan
| | - Suning Wang
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
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8
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Alexander OT, Duvenhage MM, Brink A, Swart HC, Müller P, Kroon RE, Visser HG. Synthesis, structures and luminescence properties of two gallium(III) complexes with 5,7-dimethyl-8-hydroxyquinoline. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1303487] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Orbett T. Alexander
- Department of Chemistry, University of the Free State, Bloemfontein, South Africa
| | - Mart M. Duvenhage
- Department of Physics, University of the Free State, Bloemfontein, South Africa
| | - Alice Brink
- Department of Chemistry, University of the Free State, Bloemfontein, South Africa
| | - Hendrik C. Swart
- Department of Physics, University of the Free State, Bloemfontein, South Africa
| | - Peter Müller
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - R. E. Kroon
- Department of Physics, University of the Free State, Bloemfontein, South Africa
| | - Hendrik G. Visser
- Department of Chemistry, University of the Free State, Bloemfontein, South Africa
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9
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Kambe T, Watanabe A, Imaoka T, Yamamoto K. Bismuth Complexes in Phenylazomethine Dendrimers: Controllable Luminescence and Emission in the Solid State. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tetsuya Kambe
- Laboratory for Chemistry and Life Science; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
- ERATO Japan Science and Technology (JST); 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
| | - Aiko Watanabe
- Laboratory for Chemistry and Life Science; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
- ERATO Japan Science and Technology (JST); 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
- ERATO Japan Science and Technology (JST); 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
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10
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Kambe T, Watanabe A, Imaoka T, Yamamoto K. Bismuth Complexes in Phenylazomethine Dendrimers: Controllable Luminescence and Emission in the Solid State. Angew Chem Int Ed Engl 2016; 55:13151-13154. [PMID: 27709815 DOI: 10.1002/anie.201607396] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Indexed: 11/07/2022]
Abstract
Dendritic phosphors were obtained by the stepwise integration of BiCl3 in phenylazomethine dendrimers. The bismuth-coordinated phenylazomethines displayed photoluminescence at 500-800 nm, and the intensity could be tuned by changing the stoichiometry of BiCl3 and the dendrimer. This phosphor did not show serious luminescence quenching even though the local concentration of BiCl3 in the dendrimer was as high as 20 M, and luminescence was also observed in the solid state. The absorption and emission properties could be reversibly switched by addition of a Lewis base or under electrochemical redox control, which induced the reversible complexation of BiCl3 in the dendrimer.
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Affiliation(s)
- Tetsuya Kambe
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan.,ERATO Japan Science and Technology (JST), 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan
| | - Aiko Watanabe
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan.,ERATO Japan Science and Technology (JST), 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan. .,ERATO Japan Science and Technology (JST), 4259 Nagatsuta Midori-ku, Yokohama, 226-8503, Japan.
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11
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Kutudila P, Linguerri R, Al-Mogren MM, Pichon C, Condon S, Hochlaf M. First principle investigations of organobismuth palladium-catalyzed C–C coupling reaction: mechanism, chemoselectivity and solvent effects. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1935-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Zhang DW, Chen WT, Wang YF. Photoluminescence, semiconductive properties and theoretical calculation of a novel bismuth biimidazole compound. LUMINESCENCE 2016; 32:201-205. [PMID: 27352995 DOI: 10.1002/bio.3168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 05/09/2016] [Indexed: 11/09/2022]
Abstract
A novel bismuth biimidazole compound, [(BiCl4 )-(μ2 -Cl)2 -(BiCl4 )][(CH3 )4 -2,2'-biimidazole]2 (1) with the (CH3 )4 -2,2'-biimidazole moiety generated in situ, was successfully prepared under hydrothermal conditions and structurally characterized using a single-crystal X-ray diffraction technique. Compound 1 is characteristic of an isolated structure, consisting of [(BiCl4 )-(μ2 -Cl)2 -(BiCl4 )] and (CH3 )4 -2,2'-biimidazole moieties. Solid-state photoluminescence measurement reveals that it shows a strong emission in the blue region. Time-dependent density functional theory studies show that this emission is ascribed to metal-to-ligand charge transfer. The solid-state diffuse reflectance spectrum reveals the existence of an optical band gap of 2.09 eV, indicating that it is a semiconductor.
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Affiliation(s)
- Ding-Wa Zhang
- Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi, China
| | - Wen-Tong Chen
- Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi, China.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, China.,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Fuzhou, Fujian, China
| | - Yin-Feng Wang
- Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi, China
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13
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Imran M, Mix A, Neumann B, Stammler HG, Monkowius U, Bleckenwegner P, Mitzel NW. Synthesis, structural and photo-physical studies of bismuth(III) complexes with Janus scorpionate and co-ligands. Dalton Trans 2014; 43:10956-68. [PMID: 24906201 DOI: 10.1039/c4dt00668b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Some novel complexes of bismuth(III) with the Janus scorpionate ligand [HB(mtda(Me))3](-) (mtda(Me) = 2-mercapto-5-methyl-1,3,4-thiadiazolyl) were synthesised. Na[HB(mtda(Me))3] (1) was reacted with BiX3 (X = Cl, I, NO3) in the molar ratio 2 : 1 to afford the bismuth complexes {HB(mtda(Me))3}2BiCl (3), Na[{HB(mtda(Me))3}2BiI2] (4) and [{HB(mtda(Me))3}2Bi(NO3)]n (5). Two mixed complexes {HB(mtda(Me))3}Bi(phen)Cl2 (6) and {HB(mtda(Me))3}Bi(bipy)Cl2 (7) were obtained using Janus scorpionate as the primary ligand in the presence of 1,10-phenanthroline and 2,2'-bipyridyl, respectively, as co-ligands in the 1 : 1 ratio. The obtained complexes were characterised by (1)H, (13)C and diffusion NMR (DOSY), elemental analyses and mass spectrometry. Structures of the compounds NBu4[HB(mtda(Me))3] (2), 3, 4, 5, 6 and 7 were determined by single crystal X-ray diffraction. The molecular dynamic process in complex 3 was also studied by variable temperature NMR measurements. All bismuth complexes, except for the polymeric 5, are monomeric. Complexes 6 and 7 exhibit (B)H···Bi distances of 2.76(3) and 2.71(2) Å length, respectively. Compounds 2, 6 and 7 were screened for their luminescence activity. At 77 K in ethanol solution, complexes 6 and 7 exhibit phosphorescence from ligand-to-ligand charge transfer (LLCT) and the ligand-centred (LC) excited state, respectively.
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Affiliation(s)
- Muhammad Imran
- Universität Bielefeld, Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien, CM2, Universitätsstraße 25, 33615 Bielefeld, Germany.
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