1
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Wang X, Rüttger F, Kretsch J, Kreyenschmidt A, Herbst-Irmer R, Stalke D. Boron bis-(4-methylbenzoxazol-2-yl)-methanide complexes. Dalton Trans 2024; 53:8264-8268. [PMID: 38656395 DOI: 10.1039/d4dt00522h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Boron compounds have attracted the attention of chemists because of their unique catalytic properties and potential wider material applications. Although group 13 metal compounds, which are based on the bis-(benzoxazol-2-yl)-methane system (Box, ({NCOC6H4}2CH2)), have been reported in the last several years, boron containing Box compounds were still missing. Now we report their successful syntheses and spectroscopic characterisation in this work. The borane compound [({NCOC6H3}2CH)BH2] (1) and haloboranes [({NCOC6H3}2CH)BF2] (2), [({NCOC6H3}2CH)BCl2] (3) and [({NCOC6H3}2CH)BBr2] (4) were characterised in the solid state by single crystal X-ray diffraction and in solution by NMR techniques. In addition, the fluorescence properties of compounds 1-4 are communicated.
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Affiliation(s)
- Xiaobai Wang
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany.
| | - Franziska Rüttger
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany.
| | - Johannes Kretsch
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany.
| | - Anne Kreyenschmidt
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany.
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany.
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany.
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2
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Wang L, Cheng C, Li ZY, Guo X, Wu Q, Hao E, Jiao L. Nucleophilic Aromatic Substitution (S NAr) as an Approach to Challenging Nitrogen-Bridged BODIPY Oligomers. Org Lett 2024; 26:3026-3031. [PMID: 38602395 DOI: 10.1021/acs.orglett.4c00669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
A series of nitrogen-bridged BODIPY oligomers were synthesized via nucleophilic aromatic substitution (SNAr) as a convenient approach. Further transformations achieved novel α,α-aryl BODIPY dimers as well as a BODIPY hexamer efficiently. These BODIPY oligomers showed good photophysical properties, such as apparent absorption and emission both in visible and near-infrared regions. Interestingly, the high air and photothermal stability, strong NIR absorption, and high photothermal conversion rates of hexamer B6 suggest potential applications in photothermal therapy.
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Affiliation(s)
- Long Wang
- Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Cheng Cheng
- Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Zhong-Yuan Li
- Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Xing Guo
- Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Qinghua Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Erhong Hao
- Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Lijuan Jiao
- Anhui Laboratory of Molecule-Based Materials, The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
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3
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Röttger SH, Patalag LJ, Hasenmaile F, Milbrandt L, Butschke B, Jones PG, Werz DB. Linear Amine-Linked Oligo-BODIPYs: Convergent Access via Buchwald-Hartwig Coupling. Org Lett 2024; 26:3020-3025. [PMID: 38564714 DOI: 10.1021/acs.orglett.4c00827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
A convergent route toward nitrogen-bridged BODIPY oligomers has been developed. The synthetic key step is a Buchwald-Hartwig cross-coupling reaction of an α-amino-BODIPY and the respective halide. Not only does the selective synthesis provide control of the oligomer size, but the facile preparative procedure also enables easy access to these types of dyes. Furthermore, functionalized examples were accessible via brominated derivatives.
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Affiliation(s)
- Sebastian H Röttger
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institute of Organic Chemistry, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
| | - Lukas J Patalag
- TU Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Felix Hasenmaile
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institute of Organic Chemistry, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
| | - Lukas Milbrandt
- TU Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Burkhard Butschke
- Albert-Ludwigs-Universität Freiburg, Institute of Inorganic and Analytical Chemistry, Albertstr. 21, 79104 Freiburg im Breisgau, Germany
| | - Peter G Jones
- TU Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Daniel B Werz
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institute of Organic Chemistry, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
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4
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Guo X, Sheng W, Pan H, Guo L, Zuo H, Wu Z, Ling S, Jiang X, Chen Z, Jiao L, Hao E. Tuning Shortwave-Infrared J-aggregates of Aromatic Ring-Fused Aza-BODIPYs by Peripheral Substituents for Combined Photothermal and Photodynamic Therapies at Ultralow Laser Power. Angew Chem Int Ed Engl 2024; 63:e202319875. [PMID: 38225205 DOI: 10.1002/anie.202319875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
Achieving photothermal therapy (PTT) at ultralow laser power density is crucial for minimizing photo-damage and allowing for higher maximum permissible skin exposure. However, this requires photothermal agents to possess not just superior photothermal conversion efficiency (PCE), but also exceptional near-infrared (NIR) absorptivity. J-aggregates, exhibit a significant redshift and narrower absorption peak with a higher extinction coefficient. Nevertheless, achieving predictable J-aggregates through molecular design remains a challenge. In this study, we successfully induced desirable J-aggregation (λabs max : 968 nm, ϵ: 2.96×105 M-1 cm-1 , λem max : 972 nm, ΦFL : 6.2 %) by tuning electrostatic interactions between π-conjugated molecular planes through manipulating molecular surface electrostatic potential of aromatic ring-fused aza-BODIPY dyes. Notably, by controlling the preparation method for encapsulating dyes into F-127 polymer, we were able to selectively generate H-/J-aggregates, respectively. Furthermore, the J-aggregates exhibited two controllable morphologies: nanospheres and nanowires. Importantly, the shortwave-infrared J-aggregated nanoparticles with impressive PCE of 72.9 % effectively destroyed cancer cells and mice-tumors at an ultralow power density of 0.27 W cm-2 (915 nm). This phototherapeutic nano-platform, which generates predictable J-aggregation behavior, and can controllably form J-/H-aggregates and selectable J-aggregate morphology, is a valuable paradigm for developing photothermal agents for tumor-treatment at ultralow laser power density.
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Affiliation(s)
- Xing Guo
- Laboratory of Functionalized Molecular Solids, Ministry of Education Institution, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
| | - Wanle Sheng
- Laboratory of Functionalized Molecular Solids, Ministry of Education Institution, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
| | - Hongfei Pan
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Luying Guo
- Laboratory of Functionalized Molecular Solids, Ministry of Education Institution, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
| | - Huiquan Zuo
- Laboratory of Functionalized Molecular Solids, Ministry of Education Institution, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
| | - Zeyu Wu
- The Translational Research Institute for Neurological Disorders, Department of Neurosurgery, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, China
| | - Shizhang Ling
- The Translational Research Institute for Neurological Disorders, Department of Neurosurgery, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, China
| | - Xiaochun Jiang
- The Translational Research Institute for Neurological Disorders, Department of Neurosurgery, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, China
| | - Zhijian Chen
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Lijuan Jiao
- Laboratory of Functionalized Molecular Solids, Ministry of Education Institution, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
| | - Erhong Hao
- Laboratory of Functionalized Molecular Solids, Ministry of Education Institution, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
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5
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Bozzi ÍAO, Machado LA, Diogo EBT, Delolo FG, Barros LOF, Graça GAP, Araujo MH, Martins FT, Pedrosa LF, da Luz LC, Moraes ES, Rodembusch FS, Guimarães JSF, Oliveira AG, Röttger SH, Werz DB, Souza CP, Fantuzzi F, Han J, Marder TB, Braunschweig H, da Silva Júnior EN. Electrochemical Diselenation of BODIPY Fluorophores for Bioimaging Applications and Sensitization of 1 O 2. Chemistry 2024; 30:e202303883. [PMID: 38085637 DOI: 10.1002/chem.202303883] [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: 11/30/2023] [Indexed: 01/19/2024]
Abstract
We report a rapid, efficient, and scope-extensive approach for the late-stage electrochemical diselenation of BODIPYs. Photophysical analyses reveal red-shifted absorption - corroborated by TD-DFT and DLPNO-STEOM-CCSD computations - and color-tunable emission with large Stokes shifts in the selenium-containing derivatives compared to their precursors. In addition, due to the presence of the heavy Se atoms, competitive ISC generates triplet states which sensitize 1 O2 and display phosphorescence in PMMA films at RT and in a frozen glass matrix at 77 K. Importantly, the selenium-containing BODIPYs demonstrate the ability to selectively stain lipid droplets, exhibiting distinct fluorescence in both green and red channels. This work highlights the potential of electrochemistry as an efficient method for synthesizing unique emission-tunable fluorophores with broad-ranging applications in bioimaging and related fields.
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Affiliation(s)
- Ícaro A O Bozzi
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Luana A Machado
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Emilay B T Diogo
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Fábio G Delolo
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Luiza O F Barros
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Gabriela A P Graça
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Maria H Araujo
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Felipe T Martins
- Instituto de Química, Universidade Federal de Goiás, Goiânia, 74690-900, Brazil
| | - Leandro F Pedrosa
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal Fluminense, Volta Redonda, RJ, 27213-145, Brazil
| | - Lilian C da Luz
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91501-970, RS, Brazil
| | - Emmanuel S Moraes
- Universidade Estadual de Campinas (Unicamp), Cidade Universitária, 13083970 -, Campinas, SP, Brazil
| | - Fabiano S Rodembusch
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91501-970, RS, Brazil
| | - João S F Guimarães
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - André G Oliveira
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Sebastian H Röttger
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institute of Organic Chemistry, Albertstraße 21, 79104, Freiburg (Breisgau), Germany
| | - Daniel B Werz
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institute of Organic Chemistry, Albertstraße 21, 79104, Freiburg (Breisgau), Germany
| | - Cauê P Souza
- School of Chemistry and Forensic Science, University of Kent, Park Wood Rd, Canterbury, CT2 7NH, United Kingdom
| | - Felipe Fantuzzi
- School of Chemistry and Forensic Science, University of Kent, Park Wood Rd, Canterbury, CT2 7NH, United Kingdom
| | - Jianhua Han
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Todd B Marder
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Holger Braunschweig
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Eufrânio N da Silva Júnior
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
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6
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Wang Y, Ren J, Shuai Z. Minimizing non-radiative decay in molecular aggregates through control of excitonic coupling. Nat Commun 2023; 14:5056. [PMID: 37598183 PMCID: PMC10439946 DOI: 10.1038/s41467-023-40716-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 08/03/2023] [Indexed: 08/21/2023] Open
Abstract
The widely known "Energy Gap Law" (EGL) predicts a monotonically exponential increase in the non-radiative decay rate (knr) as the energy gap narrows, which hinders the development of near-infrared (NIR) emissive molecular materials. Recently, several experiments proposed that the exciton delocalization in molecular aggregates could counteract EGL to facilitate NIR emission. In this work, the nearly exact time-dependent density matrix renormalization group (TD-DMRG) method is developed to evaluate the non-radiative decay rate for exciton-phonon coupled molecular aggregates. Systematical numerical simulations show, by increasing the excitonic coupling, knr will first decrease, then reach a minimum, and finally start to increase to follow EGL, which is an overall result of two opposite effects of a smaller energy gap and a smaller effective electron-phonon coupling. This anomalous non-monotonic behavior is found robust in a number of models, including dimer, one-dimensional chain, and two-dimensional square lattice. The optimal excitonic coupling strength that gives the minimum knr is about half of the monomer reorganization energy and is also influenced by system size, dimensionality, and temperature.
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Affiliation(s)
- Yuanheng Wang
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Jiajun Ren
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, 100875, Beijing, People's Republic of China.
| | - Zhigang Shuai
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084, Beijing, People's Republic of China.
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, People's Republic of China.
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7
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van Vliet S, Hermens JGH, Fu Y, Pfeifer L, Feringa BL. Hydrazone-based boron difluoride complexes as triplet photosensitizers for singlet oxygen generation. Chem Commun (Camb) 2023; 59:884-887. [PMID: 36594230 DOI: 10.1039/d2cc05336e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Due to the highly selective nature of singlet oxygen as an oxidant, it has received considerable interest in various areas of (organic) chemistry. Two green light activated hydrazone-based boron difluoride triplet photosensitizers possessing high quantum yields for 1O2 formation are reported. These photostable complexes are promising in applications in synthesis and catalysis.
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Affiliation(s)
- Sven van Vliet
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Johannes G H Hermens
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Youxin Fu
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Lukas Pfeifer
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
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