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Nayek P, Mal P. Mimicking Ozonolysis via Mechanochemistry: Internal Alkynes to 1,2-Diketones using H 5IO 6. Chemistry 2024; 30:e202401027. [PMID: 38634437 DOI: 10.1002/chem.202401027] [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: 03/13/2024] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 04/19/2024]
Abstract
Utilizing periodic acid as an environmentally benign oxidizing agent, this study introduces a novel mechanochemical method that mimics ozonolysis to convert internal alkynes into 1,2-diketones, showcasing effective emulation of ozone's reactivity. Notably, this oxidation occurs at room temperature in aerobic conditions, eliminating the need for toxic transition metals, hazardous oxidants, or expensive solvents. Through control experiments validating the mechanism, substantial evidence supports a concerted reaction pathway. This progress marks a significant stride toward cleaner and more efficient chemical synthesis, mitigating the environmental impact of conventional processes. Assessing the green chemistry metrics in both solvent-free and previously reported solvent-based methods, our eco-friendly protocol demonstrates an E-factor of 7.40, a 51.7 % atom economy, a 45.5 % atom efficiency, 100 % carbon efficiency, and 11.9 % reaction mass efficiency when solvents are not used.
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Affiliation(s)
- Pravat Nayek
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, 752050, India
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2
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Bhardwaj A, Mudasar Hussain C, Dewangan P, Mukhopadhyay P. Naphthalene diimide-Annulated Heterocyclic Acenes: Synthesis, Electrochemical and Semiconductor Properties and their Multifaceted Applications. Chemistry 2024; 30:e202400208. [PMID: 38454793 DOI: 10.1002/chem.202400208] [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: 01/17/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/09/2024]
Abstract
Acenes and Naphthalene Diimides (NDIs) stand as distinguished classes of organic compounds, each possessing unique and intriguing properties that have garnered significant attention across various scientific disciplines. Acenes, characterized by linearly fused aromatic rings, have captivated researchers due to their diverse electronic structures and promising applications in materials science. On the other hand, NDIs, known for their distinctive electron-accepting properties, exhibit remarkable versatility in fields ranging from organic electronics, supramolecular to spin chemistry. In this review, we navigate through the fascinating realms of both acenes and NDIs before converging our focus on the highly diverse and distinctive subgroup of NDI-annulated heterocyclic acenes. This potentially important subgroup, has emerged as a subject of intense investigation, encapsulating their fascinating synthesis, optical and electrochemical characteristics, and multifaceted applications that span the realms of chemistry, physics, and biology. Through the exploration of their synthetic strategies, unique properties, and diverse applications, this review aims to offer a comprehensive understanding of the pivotal role played by NDI-based heterocyclic acenes in contemporary multidisciplinary research and technological innovation.
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Affiliation(s)
- Abhishek Bhardwaj
- Supramolecular and Material Chemistry Lab, School of Physical sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Ch Mudasar Hussain
- Supramolecular and Material Chemistry Lab, School of Physical sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pratik Dewangan
- Supramolecular and Material Chemistry Lab, School of Physical sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab, School of Physical sciences, Jawaharlal Nehru University, New Delhi, 110067, India
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3
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El-Assaad TH, McGrath DV. Nonsymmetric Pyrene-Fused Pyrazaacenes via Green Oxidation of 2,7-Di- tert-butylpyrene. J Org Chem 2024; 89:1989-1992. [PMID: 38232773 DOI: 10.1021/acs.joc.3c01796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
We disclose a four-step oxidize-condense-oxidize-condense synthesis pathway to prepare nonsymmetric pyrene-fused pyrazaacenes (PPAs) using our recently discovered oxidation conditions for 2,7-di-tert-butylpyrene. The new pathway results in marked improvements in yields and simplifies purification as compared with the sequential condensation strategy previously employed to make these compounds.
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Affiliation(s)
- Tarek H El-Assaad
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Dominic V McGrath
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
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4
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Gogesch FS, Bauer L, Vollstädt FD, Linseis M, Senft L, Ivanović-Burmazović I, Winter RF. Pyrene fluorescence in 2,7-di(4-phenylethynyl)pyrene-bridged bis(alkenylruthenium) complexes. Dalton Trans 2023; 53:251-259. [PMID: 38037827 DOI: 10.1039/d3dt03114d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Complexes PyrDPE-RuCl and PyrDPE-Ruacac with a π-extended 2,7-di(4-phenylethynyl)pyrene linker undergo simultaneous one-electron oxidations of their {Ru}-styryl entities. The absence of an intervalence charge-transfer (IVCT) band at intermediate stages, where the mixed-valent, singly oxidized radical cation is present, and spin density confinement to the terminal styryl ruthenium site(s) are tokens of a lack of electronic coupling between the {Ru} entities across the π-conjugated linker. The close similarity of the linker-based π → π* bands in the complexes and the free ligand and their insensitivity towards oxidations at the terminal sites indicate that the central pyrenyl fluorophore is electronically decoupled from the electron-rich {Ru}-styryl termini. As a consequence, the complexes offer stable pyrene-based fluorescence emissions at 77 K, which are red-shifted from that of the linker.
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Affiliation(s)
- Franciska S Gogesch
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Lea Bauer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Florian D Vollstädt
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Laura Senft
- Fachbereich Chemie, Ludwig-Maximilian-Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Ivana Ivanović-Burmazović
- Fachbereich Chemie, Ludwig-Maximilian-Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
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5
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Luo H, Liu FZ, Liu Y, Chu Z, Yan K. Biasing Divergent Polycyclic Aromatic Hydrocarbon Oxidation Pathway by Solvent-Free Mechanochemistry. J Am Chem Soc 2023. [PMID: 37428958 DOI: 10.1021/jacs.3c00614] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Precise control in reaction selectivity is the goal in modern organic synthesis, and it has been widely studied throughout the synthetic community. In comparison, control of divergent reactivity of a given reagent under different reaction conditions is relatively less explored aspect of chemical selectivity. We herein report an unusual reaction between polycyclic aromatic hydrocarbons and periodic acid H5IO6 (1), where the product outcome is dictated by the choice of reaction conditions. That is, reactions under solution-based condition give preferentially C-H iodination products, while reactions under solvent-free mechanochemical condition provide C-H oxidation quinone products. Control experiments further indicated that the iodination product is not a reaction intermediate toward the oxidation product and vice versa. Mechanistic studies unveiled an in situ crystalline-to-crystalline phase change in 2 during ball-milling treatment, where we assigned it as a polymeric hydrogen-bond network of 1. We believe that this polymeric crystalline phase shields the more embedded electrophilic I═O group of 1 from C-H iodination and bias a divergent C-H oxidation pathway (with I═O) in the solid state. Collectively, this work demonstrates that mechanochemistry can be employed to completely switch a reaction pathway and unmask hidden reactivity of chemical reagents.
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Affiliation(s)
- Hao Luo
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Fang-Zi Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Yan Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Zhaoyang Chu
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - KaKing Yan
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
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6
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Wang XJ, Liu H, Zhang K, Yang D, Pan ZH, Wang CK, Fung MK, Ma D, Fan J. Using azaacene as an acceptor unit to construct an ultraefficient red fluorophore with an EQE over 40. MATERIALS HORIZONS 2023; 10:938-944. [PMID: 36598032 DOI: 10.1039/d2mh01322c] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Azaacenes, which have been known for a long time, are of scientific and practical importance in organic electronics. Azaacenes once shone as the luminophore in organic light-emitting diodes (OLEDs). However, due to the low exciton utilization efficiency and/or the aggregation induced quenching (ACQ) effect, N-heteroacene based OLEDs generally showed inferior device performance. In this work, azaacene has been revisited and applied as an acceptor for a red fluorophore (AZA-TPA), where the judicious connection pattern between donor and acceptor maximized the harvest of singlet and triplet excitons, resulting in a high photoluminescence efficiency of 94.6% in doped films (3 wt%). In addition, the linearly-fused polycyclic structure contributed to a high horizontal emitting dipole ratio (Θ‖ = 90%). As a result, an AZA-TPA-based OLED achieved an unprecedented external quantum efficiency of 41.30% at 610 nm. This work will pave a new path for the development of efficient N-heteroacene-based fluorophores.
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Affiliation(s)
- Xiao-Jing Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Han Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Kai Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Dezhi Yang
- Institute of Polymer Optoelectronic Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
| | - Ze-Hui Pan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Chuan-Kui Wang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Man-Keung Fung
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Dongge Ma
- Institute of Polymer Optoelectronic Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
| | - Jian Fan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China.
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002, China
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7
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Wu Z, Hippchen N, Han J, Ji L, Friedrich A, Krummenacher I, Braunschweig H, Krebs J, Moos M, Biegger P, Tverskoy O, Maier S, Lambert C, Dreuw A, Marder TB, Freudenberg J, Bunz UHF. The Radical Anion and Dianion of Benzo[3,4]cyclobuta[1,2- b]phenazine. J Org Chem 2023. [PMID: 36802620 DOI: 10.1021/acs.joc.2c02279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
We present the reduction of two azaacenes (a benzo-[3,4]cyclobuta[1,2-b]phenazine and a benzo[3,4]cyclobuta[1,2-b]naphtho[2,3-i]phenazine derivative), featuring a single cyclobutadiene unit, to their radical anions and dianions. The reduced species were produced using potassium naphthalenide in the presence of 18-crown-6 in THF. Crystal structures of the reduced representatives were obtained and their optoelectronic properties evaluated. Charging these 4n Hückel systems gives dianionic 4n + 2 π-electron systems with increased antiaromaticity, according to NICS(1.7)zz calculations, featuring unusually red-shifted absorption spectra.
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Affiliation(s)
- Zhu Wu
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Nikolai Hippchen
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Jie Han
- Interdisziplinares Zentrum für Wissenschaftliches Rechnen and Physikalisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Lei Ji
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Ivo Krummenacher
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Johannes Krebs
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Michael Moos
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Philipp Biegger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Olena Tverskoy
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Steffen Maier
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Andreas Dreuw
- Interdisziplinares Zentrum für Wissenschaftliches Rechnen and Physikalisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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8
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Borissov A, Maurya YK, Moshniaha L, Wong WS, Żyła-Karwowska M, Stępień M. Recent Advances in Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds. Chem Rev 2022; 122:565-788. [PMID: 34850633 PMCID: PMC8759089 DOI: 10.1021/acs.chemrev.1c00449] [Citation(s) in RCA: 208] [Impact Index Per Article: 104.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 12/21/2022]
Abstract
This review surveys recent progress in the chemistry of polycyclic heteroaromatic molecules with a focus on structural diversity and synthetic methodology. The article covers literature published during the period of 2016-2020, providing an update to our first review of this topic (Chem. Rev. 2017, 117 (4), 3479-3716).
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Affiliation(s)
| | | | | | | | | | - Marcin Stępień
- Wydział Chemii, Uniwersytet
Wrocławski, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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9
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Putta A, Gairhe S, Yao F, Sun H. Stereo-electronic effect of perfluoropropyl group on solid state molecular packing of isomeric dibenzo [a,c]phenazine derivatives. CrystEngComm 2022. [DOI: 10.1039/d2ce00019a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here the synthesis, characterization, and crystal structures of three perfluoropropylated dibenzo [a,c]phenazine constitutional isomers where the only differences among them are the position of perfluoropropyl substituents. The crystal...
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11
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Pyszka I, Kucybała Z, Jędrzejewska B. Effective Singlet Oxygen Sensitizers Based on the Phenazine Skeleton as Efficient Light Absorbers in Dye Photoinitiating Systems for Radical Polymerization of Acrylates. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3085. [PMID: 34200054 PMCID: PMC8200244 DOI: 10.3390/ma14113085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 12/15/2022]
Abstract
A series of dyes based on the phenazine skeleton were synthesized. They differed in the number of conjugated double bonds, the arrangement of aromatic rings (linear and/or angular system), as well as the number and position of nitrogen atoms in the molecule. These compounds were investigated as potential singlet oxygen sensitizers and visible light absorbers in dye photoinitiating systems for radical polymerization. The quantum yield of the singlet oxygen formation was determined by the comparative method based on the 1H NMR spectra recorded for the tested dyes in the presence of 2,3-diphenyl-p-dioxene before and after irradiation. The quantum yield of the triplet state formation was estimated based on the transient absorption spectra recorded using the nanosecond flash photolysis technique. The effectiveness of the dye photoinitiating system was characterized by the initial rate of trimethylolpropane triacrylate (TMPTA) polymerization. In the investigated photoinitiating systems, the sensitizer was an electron acceptor, whereas the co-initiator was an electron donor. The effectiveness of TMPTA photoinitiated polymerization clearly depended on the arrangement of aromatic rings and the number of nitrogen atoms in the modified phenazine structure as well as the quantum yield of the triplet state formation of the photosensitizer in the visible light region.
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Affiliation(s)
- Ilona Pyszka
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, 85-326 Bydgoszcz, Poland;
| | | | - Beata Jędrzejewska
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, 85-326 Bydgoszcz, Poland;
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12
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Wang Q, Gao W, Chen Y, Wang X, Zeng J, Liu Y, Ran H, Hu Z, Bai J, Feng X, Redshaw C, Chen Q, Hu J. Pyrene‐fused Dibenzoazatetracenes: Synthesis, Crystal Structures, Photophysical Properties and their Morphologies. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Qingsong Wang
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Wei Gao
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Yan Chen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Xiaohui Wang
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Jin Zeng
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Yiwei Liu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Huijuan Ran
- Shaanxi Key Laboratory for Advanced Energy Devices School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China
| | - Zhen Hu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Jie Bai
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Xing Feng
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Material and Energy Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Carl Redshaw
- Department of Chemistry University of Hull Cottingham Road Hull Yorkshire HU6 7RX UK
| | - Qing Chen
- Chinese Research Academy of Environmental Sciences No.8, Dayangfang Beiyuan Beijing P. R. China
| | - Jian‐Yong Hu
- Shaanxi Key Laboratory for Advanced Energy Devices School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China
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13
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Ueberricke L, Ciubotaru I, Ghalami F, Mildner F, Rominger F, Elstner M, Mastalerz M. Di- and Tetracyano-Substituted Pyrene-Fused Pyrazaacenes: Aggregation in the Solid State. Chemistry 2020; 26:11634-11642. [PMID: 32459010 PMCID: PMC7540477 DOI: 10.1002/chem.202002382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 05/26/2020] [Indexed: 01/23/2023]
Abstract
Five di- and tetracyano-substituted pyrene-fused pyrazaacenes were synthesized and studied as potential electron acceptors in the solid state. Single crystals of all compounds were grown and the crystal packing studied by DFT calculations (transfer integrals and reorganization energies) to get insight into possible use for semiconducting charge transport.
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Affiliation(s)
- Lucas Ueberricke
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Ioana Ciubotaru
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Farhad Ghalami
- Institut für Physikalische ChemieKarlsruher Institute of Technology (KIT)Kaiserstrasse 1276131KarlsruheGermany
| | - Felix Mildner
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Marcus Elstner
- Institut für Physikalische ChemieKarlsruher Institute of Technology (KIT)Kaiserstrasse 1276131KarlsruheGermany
| | - Michael Mastalerz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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14
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Chen C, Ruan H, Feng Z, Fang Y, Tang S, Zhao Y, Tan G, Su Y, Wang X. Crystalline Diradical Dianions of Pyrene-Fused Azaacenes. Angew Chem Int Ed Engl 2020; 59:11794-11799. [PMID: 32304152 DOI: 10.1002/anie.202001842] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Indexed: 01/09/2023]
Abstract
Although diradicals and azaacenes have been greatly attractive in fundamental chemistry and functional materials, the isolable diradical dianions of azaacenes are still unknown. Herein, we describe the first isolation of pyrene-fused azaacene diradical dianion salts [(18-c-6)K(THF)2 ]+ [(18-c-6)K]+ ⋅12-.. and [(18-c-6)K(THF)]2+ ⋅22-.. by reduction of the neutral pyrene-fused azaacene derivatives 1 and 2 with excess potassium graphite in THF in the presence of 18-crown-6. Their electronic structures were investigated by various experiments, in conjunction with theoretical calculations. It was found that both dianions are open-shell singlets in the ground state and their triplet states are thermally readily accessible owing to the small singlet-triplet energy gap. This work provides the first examples of crystalline diradical dianions of azaacenes with considerable diradical character.
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Affiliation(s)
- Chao Chen
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
| | - Huapeng Ruan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
| | - Zhongtao Feng
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
| | - Yong Fang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
| | - Shuxuan Tang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
| | - Gengwen Tan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yuanting Su
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Xinping Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, P. R. China
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15
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Chen C, Ruan H, Feng Z, Fang Y, Tang S, Zhao Y, Tan G, Su Y, Wang X. Crystalline Diradical Dianions of Pyrene‐Fused Azaacenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Chao Chen
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Huapeng Ruan
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Zhongtao Feng
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Yong Fang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Shuxuan Tang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Gengwen Tan
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China
| | - Yuanting Su
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China
| | - Xinping Wang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
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16
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Dayaker G, Tan D, Biggins N, Shelam A, Do JL, Katsenis AD, Friščić T. Catalytic Room-Temperature C-N Coupling of Amides and Isocyanates by Using Mechanochemistry. CHEMSUSCHEM 2020; 13:2966-2972. [PMID: 32222112 DOI: 10.1002/cssc.201902576] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 03/13/2020] [Indexed: 06/10/2023]
Abstract
A mechanochemical route is developed for room-temperature and solvent-free derivatization of different types of amides into carbamoyl isatins (up to 96 % conversion or yield), benzamides (up to 81 % yield), and imides (up to 92 % yield). In solution, this copper-catalyzed coupling either does not take place or requires high temperatures at which it may also be competing with alternative thermal reactivity, highlighting the beneficial role of mechanochemistry for this reaction. Such behavior resembles the previously investigated coupling with sulfonamide substrates, suggesting that this type of C-N coupling is an example of a mechanochemically favored reaction, for which mechanochemistry appears to be a favored environment over solution.
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Affiliation(s)
- Gandrath Dayaker
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
| | - Davin Tan
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
| | - Naomi Biggins
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
| | - Asha Shelam
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
| | - Jean-Louis Do
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
| | - Athanassios D Katsenis
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
| | - Tomislav Friščić
- Department of Chemistry, McGill University, FRQNT Centre for Green Chemistry and Catalysis (CCVC/CGCC), 801 Sherbrooke St. W., H31 0B8, Montreal, Canada
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17
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Kaur L, Deol H, Kumar M, Bhalla V. Integrating CuO-Fe 2 O 3 Nanocomposites and Supramolecular Assemblies of Phenazine for Visible-Light Photoredox Catalysis. Chem Asian J 2020; 15:892-898. [PMID: 32031324 DOI: 10.1002/asia.201901687] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/06/2020] [Indexed: 12/16/2022]
Abstract
A photoredox catalytic ensemble consisting of CuO-Fe2 O3 nanocomposites and oligomeric derivative of phenazine has been developed. The prepared system acts as an efficient photoredox catalyst for C-N bond formation reaction via SET mechanism under 'green' conditions (aerial environment, mixed aqueous media, recyclable), requiring less equivalents of base and amine substrate. The present study demonstrates the significant role of supramolecular assemblies as photooxidants and reductants upon irradiation and their important contribution towards the activation of the metallic centre through energy transfer and electron transfer pathways. The potential of oligomer 4: CuO-Fe2 O3 has also been explored for C-C bond formation reactions via the Sonogashira protocol.
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Affiliation(s)
- Lovjot Kaur
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Harnimarta Deol
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Manoj Kumar
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Vandana Bhalla
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
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18
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Merz J, Dietz M, Vonhausen Y, Wöber F, Friedrich A, Sieh D, Krummenacher I, Braunschweig H, Moos M, Holzapfel M, Lambert C, Marder TB. Synthesis, Photophysical and Electronic Properties of New Red-to-NIR Emitting Donor-Acceptor Pyrene Derivatives. Chemistry 2020; 26:438-453. [PMID: 31593316 PMCID: PMC6973242 DOI: 10.1002/chem.201904219] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Indexed: 02/03/2023]
Abstract
We synthesized new pyrene derivatives with strong bis(para-methoxyphenyl)amine donors at the 2,7-positions and n-azaacene acceptors at the K-region of pyrene. The compounds possess a strong intramolecular charge transfer, leading to unusual properties such as emission in the red to NIR region (700 nm), which has not been reported before for monomeric pyrenes. Detailed photophysical studies reveal very long intrinsic lifetimes of >100 ns for the new compounds, which is typical for 2,7-substituted pyrenes but not for K-region substituted pyrenes. The incorporation of strong donors and acceptors leads to very low reduction and oxidation potentials, and spectroelectrochemical studies show that the compounds are on the borderline between localized Robin-Day class-II and delocalized Robin-Day class-III species.
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Affiliation(s)
- Julia Merz
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Maximilian Dietz
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Yvonne Vonhausen
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Frederik Wöber
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Daniel Sieh
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Ivo Krummenacher
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Braunschweig
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Michael Moos
- Institut für Organische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Marco Holzapfel
- Institut für Organische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Christoph Lambert
- Institut für Organische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Todd B. Marder
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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19
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Guo BB, Azam M, AlResayes SI, Lin YJ, Jin GX. Discrete Supramolecular Stacks Based on Multinuclear Tweezer-Type Rhodium Complexes. Chemistry 2020; 26:558-563. [PMID: 31692129 DOI: 10.1002/chem.201904580] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/03/2019] [Indexed: 12/14/2022]
Abstract
By taking advantage of self-complementary π-π stacking and CH-π interactions, a series of discrete quadruple stacks were constructed through the self-aggregation of U-shaped dirhodium metallotweezer complexes featuring various planar polyaromatic ligands. By altering the conjugate stacking strength and bridging ligands, assemblies with a range of topologies were obtained, including a binuclear D-shaped macrocycle, tetranuclear open-ended cagelike frameworks, and duplex metallotweezer stacking structures. Furthermore, a rare stacking interaction resulting in selective C-H activation was observed during the self-assembly process of these elaborate architectures.
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Affiliation(s)
- Bei-Bei Guo
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai, 200433, P.R. China
| | - Mohammad Azam
- Department of Chemistry, College of Science, King Saud University, PO BOX 2455, Riyadh, 11451, KSA
| | - Saud I AlResayes
- Department of Chemistry, College of Science, King Saud University, PO BOX 2455, Riyadh, 11451, KSA
| | - Yue-Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai, 200433, P.R. China
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai, 200433, P.R. China
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20
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Galmiche L, Allain C, Le T, Guillot R, Audebert P. Renewing accessible heptazine chemistry: 2,5,8-tris(3,5-diethyl-pyrazolyl)-heptazine, a new highly soluble heptazine derivative with exchangeable groups, and examples of newly derived heptazines and their physical chemistry. Chem Sci 2019; 10:5513-5518. [PMID: 31293735 PMCID: PMC6549597 DOI: 10.1039/c9sc00665f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 04/23/2019] [Indexed: 12/28/2022] Open
Abstract
We have prepared 2,5,8-tris(3,5-diethyl-pyrazolyl)-heptazine, the first highly soluble heptazine derivative possessing easily exchangeable leaving groups. We present its original synthesis employing mechanochemistry, along with a few examples of its versatile reactivity. It is, in particular, demonstrated that the pyrazolyl leaving groups can be replaced by several secondary or primary amino substituents or by three aryl- or benzyl-thiol substituents. In addition to being a synthetic platform, 2,5,8-tris(3,5-diethyl-pyrazolyl)-heptazine is fluorescent and electroactive, and its attractive properties, as well as those of the derived heptazines, are briefly presented.
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Affiliation(s)
- Laurent Galmiche
- PPSM , ENS Cachan , CNRS , Université Paris-Saclay , 94235 Cachan , France .
| | - Clémence Allain
- PPSM , ENS Cachan , CNRS , Université Paris-Saclay , 94235 Cachan , France .
| | - Tuan Le
- PPSM , ENS Cachan , CNRS , Université Paris-Saclay , 94235 Cachan , France .
| | - Régis Guillot
- ICMMO , Université Paris Sud , CNRS , Université Paris-Saclay , 91405 Orsay , France
| | - Pierre Audebert
- PPSM , ENS Cachan , CNRS , Université Paris-Saclay , 94235 Cachan , France .
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21
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Chen M, Hu X, Liu J, Li B, Leung NLC, Viglianti L, Cheung TS, Sung HHY, Kwok RTK, Williams ID, Qin A, Lam JWY, Tang BZ. Rational design of red AIEgens with a new core structure from non-emissive heteroaromatics. Chem Sci 2018; 9:7829-7834. [PMID: 30429992 PMCID: PMC6194487 DOI: 10.1039/c8sc02810a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/20/2018] [Indexed: 12/17/2022] Open
Abstract
The development of new aggregation-induced emission (AIE) systems is a hot research topic, from which functional materials with diversified structures and properties are derived. Here, based on rare, non-emissive and highly electron-withdrawing heteroaromatics of 1,4,5,8-tetraazaanthracene (TAA), experimental and theoretical studies reveal that attaching phenyl rotors to TAA is crucial to creating a new N-type AIE core structure. Furthermore, by covalent attachment of electron-donating aromatic amines to the peripheries of the AIE core, red AIEgens could be obtained readily, which exhibit excellent photostability for long-term lysosome tracking. This work not only provides a new strategy to design heterocycle-containing AIEgens from non-emissive heteroaromatics but also stimulates more their applications as bio-imaging materials.
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Affiliation(s)
- Ming Chen
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Xianglong Hu
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
- MOE Key Laboratory of Laser Life Science , Institute of Laser Life Science , College of Biophotonics , South China Normal University , Guangzhou , 510631 , China
| | - Junkai Liu
- NFSC Center for Luminescence from Molecular Aggregates , SCUT-HKUST Joint Research Institute , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Baixue Li
- NFSC Center for Luminescence from Molecular Aggregates , SCUT-HKUST Joint Research Institute , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Nelson L C Leung
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Lucia Viglianti
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Tsz Shing Cheung
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Herman H Y Sung
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Ryan T K Kwok
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Ian D Williams
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Anjun Qin
- NFSC Center for Luminescence from Molecular Aggregates , SCUT-HKUST Joint Research Institute , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Jacky W Y Lam
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
| | - Ben Zhong Tang
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering , Research Center for Tissue Restoration and Reconstruction , Institute of Advanced Study , State Key Laboratory of Molecular Nanoscience , Division of Life Science and Diversion of Biomedical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon , Hong Kong , China .
- NFSC Center for Luminescence from Molecular Aggregates , SCUT-HKUST Joint Research Institute , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
- HKUST-Shenzhen Research Institute , Shenzhen 518057 , China
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22
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Affiliation(s)
- Martin Obst
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93040 Regensburg Germany
| | - Burkhard König
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93040 Regensburg Germany
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23
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Bhutia ZT, Das A, Biswas M, Chatterjee A, Banerjee M. 7-Oxa-4-thia-1-aza-bicyclo[3.2.1]octane 4,4-Dioxides: Mechanochemical Synthesis by Tandem Michael Addition-1,3-Dipolar Cycloaddition of Aldoximes and Evaluation of Antibacterial Activities. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701511] [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)
| | - Avijit Das
- Department of Biological Sciences; BITS; Goa Campus 403726 Pilani India
| | - Malabika Biswas
- Department of Biological Sciences; BITS; Goa Campus 403726 Pilani India
| | | | - Mainak Banerjee
- Department of Chemistry; BITS; Goa Campus 403726 Pilani India
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24
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Affiliation(s)
- Davin Tan
- Department of Chemistry; McGill University; 801 Sherbrooke St.W. H3A0B8 Montreal Canada
| | - Tomislav Friščić
- Department of Chemistry; McGill University; 801 Sherbrooke St.W. H3A0B8 Montreal Canada
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25
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Julien PA, Malvestiti I, Friščić T. The effect of milling frequency on a mechanochemical organic reaction monitored by in situ Raman spectroscopy. Beilstein J Org Chem 2017; 13:2160-2168. [PMID: 29114323 PMCID: PMC5669241 DOI: 10.3762/bjoc.13.216] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 09/18/2017] [Indexed: 12/27/2022] Open
Abstract
We provide the first in situ and real-time study of the effect of milling frequency on the course of a mechanochemical organic reaction conducted using a vibratory shaker (mixer) ball mill. The use of in situ Raman spectroscopy for real-time monitoring of the mechanochemical synthesis of a 2,3-diphenylquinoxaline derivative revealed a pronounced dependence of chemical reactivity on small variations in milling frequency. In particular, in situ measurements revealed the establishment of two different regimes of reaction kinetics at different frequencies, providing tentative insight into processes of mechanical activation in organic mechanochemical synthesis.
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Affiliation(s)
- Patrick A Julien
- Department of Chemistry, McGill University, Montreal, QC, Canada
| | - Ivani Malvestiti
- Department of Chemistry, McGill University, Montreal, QC, Canada.,Departamento de Química Fundamental, Universidade Federal de Pernambuco, PE, Brazil
| | - Tomislav Friščić
- Department of Chemistry, McGill University, Montreal, QC, Canada
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26
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Ganschow M, Koser S, Hahn S, Rominger F, Freudenberg J, Bunz UHF. Dibenzobarrelene-Based Azaacenes: Emitters in Organic Light-Emitting Diodes. Chemistry 2017; 23:4415-4421. [DOI: 10.1002/chem.201605820] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Michael Ganschow
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Silke Koser
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Sebastian Hahn
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- InnovationLab GmbH; Speyerer Straße 4 69115 Heidelberg Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre for Advanced Materials; Ruprecht-Karls-Universität; Im Neuenheimer Feld 225 69120 Heidelberg Germany
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27
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Bhutia ZT, Prasannakumar G, Das A, Biswas M, Chatterjee A, Banerjee M. A Facile, Catalyst-Free Mechano-Synthesis of Quinoxalines and their In-Vitro Antibacterial Activity Study. ChemistrySelect 2017. [DOI: 10.1002/slct.201601672] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zigmee T. Bhutia
- Department of Chemistry, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403726 India
| | | | - Avijit Das
- Department of Biological Sciences, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403 726 India
| | - Malabika Biswas
- Department of Biological Sciences, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403 726 India
| | - Amrita Chatterjee
- Department of Chemistry, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403726 India
| | - Mainak Banerjee
- Department of Chemistry, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403726 India
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28
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Chen J, Chen Y, Wu Y, Wang X, Yu Z, Xiao L, Liu Y, Tian H, Yao J, Fu H. Modulated emission from dark triplet excitons in aza-acene compounds: fluorescence versus phosphorescence. NEW J CHEM 2017. [DOI: 10.1039/c6nj02747d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The enhanced charge-transfer interaction from DBP to TBP leads to higher energy triplet states, which reinforces reverse intersystem crossing.
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29
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Walsh JC, Williams KLM, Lungerich D, Bodwell GJ. Synthesis of Pyrene-4,5-dione on a 15 g Scale. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601198] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joshua C. Walsh
- Department of Chemistry; Memorial University of Newfoundland; 283 Prince Philip Drive A1B 3X7 St. John's NL Canada
| | - Kerry-Lynn M. Williams
- Department of Chemistry; Memorial University of Newfoundland; 283 Prince Philip Drive A1B 3X7 St. John's NL Canada
| | - Dominik Lungerich
- Department of Chemistry and Pharmacy; Interdisciplinary Centre for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg; Henkestrasse 42 91054 Erlangen Germany
| | - Graham J. Bodwell
- Department of Chemistry; Memorial University of Newfoundland; 283 Prince Philip Drive A1B 3X7 St. John's NL Canada
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