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Zeng CY, Deng WJ, Zhao KQ, Redshaw C, Donnio B. Phenanthrothiophene-Triazine Star-Shaped Discotic Liquid Crystals: Synthesis, Self-Assembly, and Stimuli-Responsive Fluorescence Properties. Chemistry 2024; 30:e202400296. [PMID: 38427538 DOI: 10.1002/chem.202400296] [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: 01/23/2024] [Revised: 03/01/2024] [Accepted: 03/01/2024] [Indexed: 03/03/2024]
Abstract
Lipophilic biphenylthiophene- and phenanthrothiophene-triazine compounds, BPTTn and CPTTn, respectively, were prepared by a tandem procedure involving successive Suzuki-Miyaura coupling and Scholl cyclodehydrogenation reactions. These compounds display photoluminescence in solution and in thin film state, solvatochromism with increasing solvent's polarity, as well as acidochromism and metal ion recognition stimuli-responsive fluorescence. Protonation of BPTT10 and CPTT10 by trifluoroacetic acid results in fluorescence quenching, which is reversibly restored once treated with triethylamine (ON-OFF switch). DFT computational studies show that intramolecular charge transfer (ICT) phenomena occurs for both molecules, and reveal that protonation enhances the electron-withdrawing ability of the triazine core and reduces the band gap. This acidochromic behavior was applied to a prototype fluorescent anti-counterfeiting device. They also specifically recognize Fe3+ through coordination, and the recognition mechanism is closely related to the photoinduced electron transfer between Fe3+ and BPTT10/CPTT10. CPTTn self-assemble into columnar rectangular (Colrec) mesophase, which can be modulated by oleic acid via the formation of a hydrogen-bonded supramolecular liquid crystal hexagonal Colhex mesophase. Finally, CPTTn also form organic gels in alkanes at low critical gel concentration (3.0 mg/mL). Therefore, these star-shaped triazine molecules possess many interesting features and thus hold great promises for information processing, liquid crystal semiconductors and organogelators.
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Affiliation(s)
- Chong-Yang Zeng
- College of Chemistry and Materials Science, Sichuan Normal University, 610066, Chengdu, China
| | - Wen-Jing Deng
- College of Chemistry and Materials Science, Sichuan Normal University, 610066, Chengdu, China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, 610066, Chengdu, China
| | - Carl Redshaw
- Department of Chemistry, University of Hull, School of Natural Sciences, Hull, HU6 7RX, UK
| | - Bertrand Donnio
- Institut de Chimie et Physique des Matériaux de Strasbourg, UMR 7504, CNRS-University of Strasbourg, 67034, Strasbourg, France
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Alshubramy MA, Alotaibi FS, Alkahtani HM, Alamry KA, Hussein MA. C3-Symmetric ligands in drug design: An overview of the challenges and opportunities ahead. Bioorg Med Chem Lett 2024; 103:129702. [PMID: 38490620 DOI: 10.1016/j.bmcl.2024.129702] [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: 01/02/2024] [Revised: 02/10/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
C3-symmetry is a type of star-shaped molecule consisting of a central core and three symmetrically attached chains. These molecules are used in drug discovery due to their unique three-fold rotational symmetry, which allows for specific binding interactions and improved molecular recognition. In this text, we provide an overview of synthetic approaches with C3-symmetry as a pharmaceutical tool: progress, challenges, and opportunities. C3-symmetric ligands offer both challenges and opportunities in drug design. Their unique symmetry can enhance binding interactions, but careful consideration of rigidity, synthetic complexity, and target compatibility is crucial. Further research and advancements in synthetic methods and modeling tools will likely drive their exploration in drug discovery, leading to the discovery of potent C3-symmetric ligands.
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Affiliation(s)
- Maha A Alshubramy
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Faez S Alotaibi
- Department of Chemistry, College of Science, Qassim University Buraidah 51452, Saudi Arabia
| | - Hamad M Alkahtani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Khalid A Alamry
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mahmoud A Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt.
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Kumar K, Sharma D, Thakur D, Karmakar A, Yang HW, Jayakumar J, Banik S, Jou JH, Ghosh S. Sterically Crowded Donor-Rich Imidazole Systems as Hole Transport Materials for Solution-Processed OLEDs. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5137-5150. [PMID: 38412064 DOI: 10.1021/acs.langmuir.3c03059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Imidazole, being an interesting dinitrogenic five-membered heterocyclic core, has been widely explored during the last several decades for developing various fascinating materials. Among the different domains where imidazole-based materials find wide applications, the area of optoelectronics has seen an overwhelming growth of functional imidazole derivatives developed through remarkable design and synthesis strategies. The present work reports a design approach for integrating bulky donor units at the four terminals of an imidazole core, leading to the development of sterically populated imidazole-based molecular platforms with interesting structural features. Rationally chosen starting substrates led to the incorporation of a bulky donor at the four terminals of the imidazole core. In addition, homo- and cofunctional molecular systems were synthesized through a suitable combination of initial ingredients. Our approach was extended to develop a series of four molecular systems, i.e., Cz3PhI, Cz4I, Cz3PzI, and TPA3CzI, containing carbazole, phenothiazine, and triphenylamine as known efficient donors at the periphery. Given their interesting structural features, three sterically crowded molecules (Cz4I, Cz3PzI, and TPA3CzI) were screened by using DFT and TD-DFT calculations to investigate their potential as hole transport materials (HTMs) for optoelectronic devices. The theoretical studies on several aspects including hole reorganization and exciton binding energies, ionization potential, etc., revealed their potential as possible candidates for the hole transport layer of OLEDs. Single-crystal analysis of Cz3PhI and Cz3PzI established interesting structural features including twisted geometries, which may help attain high triplet energy. Finally, the importance of theoretical predictions was established by fabricating two solution-process green phosphorescent OLED devices using TPA3CzI and Cz3PzI as HTMs. The fabricated devices exhibited good EQE/PE and CE of ∼15%/56 lm/W/58 cd/A and ∼13%/47 lm/W/50 cd/A, respectively, at 100 cd/m2.
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Affiliation(s)
- Krishan Kumar
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175075, India
| | - Dipanshu Sharma
- Department of Materials Science and Engineering, National Tsing Hua University 101, Sec. 2, Guang-Fu Road, Hsinchu 30013, Taiwan, R.O.C
| | - Diksha Thakur
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175075, India
| | - Anirban Karmakar
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rosvisco Pais, Lisboa 1049-001, Portugal
| | - Hong-Wei Yang
- Department of Materials Science and Engineering, National Tsing Hua University 101, Sec. 2, Guang-Fu Road, Hsinchu 30013, Taiwan, R.O.C
| | - Jayachandran Jayakumar
- Department of Chemical Engineering, National Tsing Hua University, 101, Sec. 2, Guang-Fu Road, Hsinchu 30013, Taiwan, R.O.C
| | - Subrata Banik
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu 613401, India
| | - Jwo-Huei Jou
- Department of Materials Science and Engineering, National Tsing Hua University 101, Sec. 2, Guang-Fu Road, Hsinchu 30013, Taiwan, R.O.C
| | - Subrata Ghosh
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175075, India
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Rani Kumar N, Agrawal AR. Advances in the Chemistry of 2,4,6-Tri(thiophen-2-yl)-1,3,5-triazine. ChemistryOpen 2023; 12:e202200203. [PMID: 36599693 PMCID: PMC9812756 DOI: 10.1002/open.202200203] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/30/2022] [Indexed: 01/06/2023] Open
Abstract
Heterocyclic systems are now considered to be an integral part of material chemistry. Thiophene, selenophene, furan, pyrrole, carbazole, triazine and others are some such examples worth mentioning. 2,4,6-Tri(thiophen-2-yl)-1,3,5-triazine is a C3h -symmetric system with thiophene as the donor unit and s-triazine as the acceptor unit. This review gives an insight into the advances made in the thienyl-triazine chemistry over the past two to three decades. The synthetic pathways for arriving at this system and all its important derivatives are provided. The major focus is on the materials synthesized using the thienyl-triazine system, including star molecules, linear and hyperbranched polymers, porous materials and their diverse applications. This review will play a catalytic role for new dimensions to be explored in thienyl-triazine chemistry.
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Affiliation(s)
- Neha Rani Kumar
- Department of Chemistry Dhemaji CollegeDhemaji787057, AssamIndia
| | - Abhijeet R. Agrawal
- Institute of ChemistryThe Hebrew University of Jerusalem Edmond J. Safra CampusJerusalem91904Israel
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Park HK, Ham MG, Kim YJ, Takeuchi K, Choi JC. Star-shaped Pd(II) and Pt(II) complexes containing C 3-symmetric conjugated thiophenes: Synthesis, characterization, and chemical reactions with organic unsaturated molecules. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2046269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Hee Kwon Park
- Department of Chemistry, Kangnung-Wonju National University, Gangneung, Korea
| | - Min Gyu Ham
- Department of Chemistry, Kangnung-Wonju National University, Gangneung, Korea
| | - Yong-Joo Kim
- Department of Chemistry, Kangnung-Wonju National University, Gangneung, Korea
| | - Katsuhiko Takeuchi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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Muraoka H, Ogawa S. Synthesis and Photophysical Properties of Star-Shaped (D-π)<sub>3</sub>-A Molecules with an <i>N</i>-Heteroaromatic Core. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroki Muraoka
- Department of Chemistry and Biological Sciences, Faculty of Science and Engineering, Iwate University
| | - Satoshi Ogawa
- Department of Chemistry and Biological Sciences, Faculty of Science and Engineering, Iwate University
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Bashiri M, Jarrahpour A, Rastegari B, Iraji A, Irajie C, Amirghofran Z, Malek-Hosseini S, Motamedifar M, Haddadi M, Zomorodian K, Zareshahrabadi Z, Turos E. Synthesis and evaluation of biological activities of tripodal imines and β-lactams attached to the 1,3,5-triazine nucleus. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02592-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Goryunkov AA, Asfandiarov NL, Muftakhov MV, Ioffe IN, Solovyeva VA, Lukonina NS, Markov VY, Rakhmeyev RG, Pshenichnyuk SA. Dissociative Electron Attachment to 2,3,6,7,10,11-Hexabromotriphenylene. J Phys Chem A 2020; 124:690-694. [PMID: 31914729 DOI: 10.1021/acs.jpca.9b11088] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2,3,6,7,10,11-Hexabromotriphenylene (HBTP) and 2,3,6,7,10-pentabromotriphenylene (PBTP) were investigated by means of dissociative electron attachment spectroscopy (DEAS). The dominant decay channel of the transient molecular negative ions consists of elimination of Br- with resonances in the low electron energy region. Formation of long-lived parent anions with autodetachment lifetime τa = 310 μs is observed at thermal electron energies. The adiabatic electron affinities, EAa = 1.12 ± 0.1 eV in HBTP and 1.09 ± 0.1 eV in PBTP, evaluated using a simple Arrhenius approach are in good agreement with those predicted by DFT (XYG3/Def2-TZVPP//PBE0/Def2-TZVPP) calculations.
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Affiliation(s)
- Alexey A Goryunkov
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119991 , Russia
| | - Nail L Asfandiarov
- Institute of Molecule and Crystal Physics , Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences , Prospekt Octyabrya, 151 , Ufa 450075 , Russia
| | - Mars V Muftakhov
- Institute of Molecule and Crystal Physics , Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences , Prospekt Octyabrya, 151 , Ufa 450075 , Russia
| | - Ilya N Ioffe
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119991 , Russia
| | - Vera A Solovyeva
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119991 , Russia
| | - Natalia S Lukonina
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119991 , Russia
| | - Vitaliy Yu Markov
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119991 , Russia
| | - Rustam G Rakhmeyev
- Institute of Molecule and Crystal Physics , Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences , Prospekt Octyabrya, 151 , Ufa 450075 , Russia
| | - Stanislav A Pshenichnyuk
- Institute of Molecule and Crystal Physics , Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences , Prospekt Octyabrya, 151 , Ufa 450075 , Russia
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Diab HM, Salem ME, Abdelhamid IA, Elwahy AHM. Synthesis of novel star-shaped molecules based on a 1,3,5-triazine core linked to different heterocyclic systems as novel hybrid molecules. RSC Adv 2020; 10:44066-44078. [PMID: 35517173 PMCID: PMC9058422 DOI: 10.1039/d0ra09025e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/02/2020] [Indexed: 12/12/2022] Open
Abstract
The synthesis of novel star-shaped compounds based on an s-triazine core and linked to hexahydroacridinediones, pyrimido[4,5-b]quinolones, 1H-isoquinolino[2,1-a]quinolines, tetrahydro-4H-chromenes, dihydropyrano[2,3-c]pyrazoles, thiazole, or benzothiazole as new hybrid molecules through Michael and Hantzsch reactions is reported. For this purpose, 2,4,6-tris(4-formylphenoxy)benzaldehyde was used as a versatile precursor. The synthesis of novel star-shaped compounds based on an s-triazine core and linked to different heterocycles as new hybrid molecules through Michael and Hantzsch reactions is reported.![]()
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Affiliation(s)
- Hadeer M. Diab
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
| | - Mostafa E. Salem
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
| | | | - Ahmed H. M. Elwahy
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
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