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Kausar Z, Mansha A, Asim S. Effect of Chloride, Sulfate, and Ferrate Salts on Electronic Energy Levels of Anthracene Proving it a Potential Candidate as an ON and ON-OFF UV-Vis Sensor. J Fluoresc 2024; 34:1365-1378. [PMID: 37530932 DOI: 10.1007/s10895-023-03363-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 07/19/2023] [Indexed: 08/03/2023]
Abstract
Anthracene molecule possesses remarkable optical activity and till today this molecule is of special interest of scientists. Present study is focused on the study of effects of Chloride, Sulfate, Nitrate and Ferrate salts on absorption and emission spectra of targeted fluorophore in carbontetrachloride, chloroform, dichloromethane and methanol. Prominent solvatochromic effects shows dependence of HOMO-LUMO orbitals on solvent polarity. Anthracene molecules exhibits changes in absorption and emission spectra, and show both ON and ON-OFF behavior on addition of said ions. Based on experimental results it was concluded that fluorophore molecule could be used more effectively as UV-Visible (UV-V) sensors in comparison to the emission sensor.
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Affiliation(s)
- Zakia Kausar
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan
| | - Asim Mansha
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Sadia Asim
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan.
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2
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Jayabharathi J, Thanikachalam V, Thilagavathy S. Phosphorescent organic light-emitting devices: Iridium based emitter materials – An overview. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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3
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Taimoory SM, Yu X, Beyeh NK, Nasri S, Trant JF. Divalent Benzimidazolium-Based Axles for Self-Reporting Pseudorotaxanes. J Org Chem 2022; 87:15783-15795. [PMID: 36377941 DOI: 10.1021/acs.joc.2c01758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mono- and (bis)benzimidazoliums were evaluated both experimentally and computationally for their potential as pseudopolyrotaxane axle building blocks. Their aggregation and photophysical behavior, along with their potential to form a [2]pseudorotaxane with dibenzyl-24-crown-8, was studied through the synergistic application of 1D/2D and diffusion-ordered NMR spectroscopy, mass spectrometry, ultraviolet-visible and fluorescence spectroscopy, and time-dependent density functional theory. Their photophysical behavior was measured and modeled as a function of protonation state, solvent, and concentration. The axles show strong solvochromaticism and a very pronounced concentration-dependent optical profile, including self-quenching when a pseudorotaxane is formed. This axle with multiple recognition sites has the potential to form pseudorotaxanes with tunable optical behavior.
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Affiliation(s)
- S Maryamdokht Taimoory
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave., Windsor, ON N9B 3P4, Canada.,Department of Chemistry, University of Michigan, 930 N. University Ave., 2006B, Ann Arbor, Michigan 48109, United States
| | - Xiao Yu
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave., Windsor, ON N9B 3P4, Canada
| | - Ngong Kodiah Beyeh
- Department of Chemistry, Oakland University, 146 Library Drive, Rochester, Michigan 48309-4479, United States
| | - Sarah Nasri
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave., Windsor, ON N9B 3P4, Canada
| | - John F Trant
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave., Windsor, ON N9B 3P4, Canada
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4
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Cao Y, Shang C, Zheng Z, Sun C. Substituent derivatives of benzothiazole-based fluorescence probes for hydrazine with conspicuous luminescence properties: A theoretical study. Spectrochim Acta A Mol Biomol Spectrosc 2022; 279:121449. [PMID: 35660153 DOI: 10.1016/j.saa.2022.121449] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/02/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
In the present work, four probe molecules for detecting hydrazine have been designed based on the 2-(4-Acetoxy-3-benzothiazole-2-yl-phenyl)-4-methyl-thiazole- 5-carboxylic acid ethyl ester (HP1) to investigate the influence of the amino and cyano groups on the excited-state intramolecular proton transfer (ESIPT) behavior and photophysical properties. The changes in hydrogen bond strength indicate that the intramolecular hydrogen bond of all probe products is enhanced upon photoexcitation. Frontier molecular orbitals (FMOs) and natural bond orbital (NBO) reveal the driving force of ESIPT. In addition, the potential energy curves and transition state theory explain the reason for the single fluorescence phenomenon in the experiment. The simulated absorption and fluorescence spectra of HP1 and its product (HPP1) are completely consistent with the experimental results, which also verify the viewpoint. Meanwhile the cyano derivative HPP4 exhibits a larger Stokes-shift (201 nm) than that of HPP1 (145 nm) and has the same low energy barrier as HPP1. These excellent properties allow HPP4 to be a fluorescent probe with superior performance than the original molecule. In conclusion, this work can provide a theoretical basis for the design and synthesis of more sensitive fluorescent probes for the detection of hydrazine.
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Affiliation(s)
- Yunjian Cao
- College of Science, Northeast Forestry University, Harbin 150040, China
| | - Changjiao Shang
- College of Science, Northeast Forestry University, Harbin 150040, China
| | - Zefei Zheng
- Aulin College, Northeast Forestry University, Harbin 150040, China
| | - Chaofan Sun
- College of Science, Northeast Forestry University, Harbin 150040, China.
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6
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J S, P R, S R. Solvent free synthesis and spectral analysis of 2,4-dimethyl-6-(1-phenyl-1H-benzimidazol-2-yl)phenol: on/off fluorescence, inter and intramolecular hydrogen bonding. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2076697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sivapriya J
- Department of Chemistry, St. Joseph’s Institute of Technology, Chennai, Tamilnadu, India
| | - Ravichandran P
- Department of Chemical Engineering, St. Joseph’s Institute of Technology, Chennai, Tamilnadu, India
| | - Renganathan S
- Department of Biotechnology, Anna University, Chennai, Tamil Nadu, India
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7
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Navamani P, Jayamoorthy K, Srinivasan N. Nano SiO 2 catalytic synthesis, NMR spectral studies, photophysical properties and theoretical studies of some styryl imidazole derivatives. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2070645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- P. Navamani
- Research and Development Center, Bharathiar University, Coimbatore, Tamilnadu, India
- Department of Chemistry, GGHSS, Uthiramerur Kanchipuram, Tamilnadu, India
| | - K. Jayamoorthy
- Department of Chemistry, St.Joseph's College of Engineering, Chennai, Tamilnadu, India
| | - N. Srinivasan
- Department of Chemistry, Pachaiyappa's College for Men, Kanchipuram, Tamilnadu, India
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8
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Nardi M, Bonacci S, Herrera Cano N, Oliverio M, Procopio A. The Highly Efficient Synthesis of 1,2-Disubstituted Benzimidazoles Using Microwave Irradiation. Molecules 2022; 27:1751. [PMID: 35268852 DOI: 10.3390/molecules27051751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 02/17/2022] [Accepted: 03/05/2022] [Indexed: 11/17/2022] Open
Abstract
The benzimidazole ring of the heterocyclic pharmacophores is one of the most widespread and studied systems in nature. The benzimidazole derivative synthesis study is a crucial point for the development of a clinically available benzimidazole-based drug. Here, we report a simple microwave assisted method for the synthesis of 1,2-disubstituted benzimidazoles. The combination of the molar ratio of N-phenyl-o-phenylenediamine:benzaldehyde (1:1) using microwave irradiation and only 1% mol of Er(OTf)3 provides an efficient and environmental mild access to a diversity of benzimidazoles under solvent-free conditions. The proposed method allows for the obtainment of the desired products in a short time and with very high selectivity.
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Zhong R, Xiong W, Zhang H, Zeng T, Gong S, Sun Q. Highly Efficient and Ambient-Temperature Synthesis of Benzimidazoles via Co(III)/Co(II)-Mediated Redox Catalysis. Catalysts 2022; 12:59. [DOI: 10.3390/catal12010059] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
An efficient method for ambient-temperature synthesis of a variety of 2-substituted and 1,2-disubstituted benzimidazoles from aldehyde and phenylenediamine substrates has been developed by utilizing Co(III)/Co(II)-mediated redox catalysis. The combination of only 1 mol% of Co(acac)2 and stoichiometric amount of hydrogen peroxide provides a fast, green, and mild access to a diversity of benzimidazoles under solvent-free conditions.
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Xiong W, Peng X, Zhong R, Zheng J, Duo S, Gong S, Sun H, Sun Q. Construction of a Clock Catalytic System: Highly Efficient and Self‐Indicating Synthesis of Benzoheterocycles at Ambient Temperature. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wu‐Lin Xiong
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University 605 Fenglin Ave Nanchang, Jiangxi 330013 P. R. China
| | - Xiao‐Chong Peng
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University 605 Fenglin Ave Nanchang, Jiangxi 330013 P. R. China
| | - Ren‐Yuan Zhong
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University 605 Fenglin Ave Nanchang, Jiangxi 330013 P. R. China
| | - Jianwei Zheng
- Department of Chemistry Northeastern University NO. 3–11, Wenhua Rd Shenyang, Liaoning 110819 P. R. China
| | - Shuwang Duo
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University 605 Fenglin Ave Nanchang, Jiangxi 330013 P. R. China
| | - Shan‐Shan Gong
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University 605 Fenglin Ave Nanchang, Jiangxi 330013 P. R. China
| | - Hong‐bin Sun
- Department of Chemistry Northeastern University NO. 3–11, Wenhua Rd Shenyang, Liaoning 110819 P. R. China
| | - Qi Sun
- Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University 605 Fenglin Ave Nanchang, Jiangxi 330013 P. R. China
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11
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Mondal S, Dey S. Strategy to Design a Flexible and Macromolecular Sensor to Bind Cd 2+ Ions: A Complete Photophysical Analysis and Bio-Imaging Study. ACS Omega 2021; 6:27936-27945. [PMID: 34722993 PMCID: PMC8552341 DOI: 10.1021/acsomega.1c03793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
A novel triazole-bridged coumarin-benzimidazole-conjugated fluorescence sensor (4) has been developed for selective detection of Cd2+ over other competitive metal ions. The sensor exhibited quick "turn-on" responses upon interaction with a very low level of Cd2+ (14 nM). The photophysical changes in the complexation of Cd2+ with sensor 4 have been explained through the excited-state intramolecular proton transfer mechanism. The involvement of benzimidazole and triazole moieties in Cd2+ binding was confirmed by different spectroscopic techniques such as UV-vis, Fourier transform infrared, nuclear magnetic resonance, and ESI mass. The diameter of the circular shape of the sensor decreased upon complexation with Cd2+, which was confirmed by field-emission scanning electron microscopy. Furthermore, the quantum chemical (density functional theory) calculation supported the mechanism of interactions and the mode of binding of 4 toward Cd2+. The sensor was more effective for finding Cd2+ in two living cells, C6 (rat glial cell) and Hep G2 (human liver cell).
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Affiliation(s)
- Surajit Mondal
- Department of Chemistry, Indian
Institute of Technology (ISM), Dhanbad 826004, India
| | - Swapan Dey
- Department of Chemistry, Indian
Institute of Technology (ISM), Dhanbad 826004, India
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12
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Affiliation(s)
- Bijan Mirabi
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Austin D. Marchese
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mark Lautens
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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13
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Hussein EM, Guesmi NE, Maji TK, Jassas RS, Alsimaree AA, Altass HM, Moussa Z, Pal SK, Ahmed SA. Synthesis and photophysical properties of benzimidazoles grafted pyrazole-containing pyrene or fluorene moiety: A combined spectroscopic and computational study. J Photochem Photobiol A Chem 2021; 419:113465. [DOI: 10.1016/j.jphotochem.2021.113465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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14
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Jayamoorthy K, Saravanan P, Rao VS, Rajagopalan NR, Rengarajan S, Nisha P. Carbon nanotubes functionalized with newly synthesized benzimidazole derivative for corrosion inhibition on the nickel alloy surface in a sulfuric acidic medium. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1984534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K. Jayamoorthy
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - P. Saravanan
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - Vaddi Seshagiri Rao
- Department of Mechanical Engineering, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - N. R. Rajagopalan
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - Sathish Rengarajan
- Department of Mechanical Engineering, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - P. Nisha
- Department of Electrical and Electronics Engineering, Easwari Engineering College, Chennai, Tamil Nadu, India
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15
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Sathyanarayana R, Kumar V, Pujar G, Poojary B, Shankar MK, Yallappa S. Hydroxy-benzimidazoles as blue-green emitters: Synthesis, structural and DFT studies. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Abstract
Ion sensor properties of 4-(1-(4-hydroxy-3-methoxybenzyl)-1H-benzo[d]imidazol-2-yl)-2-methoxyphenol (L) in acetonitrile-water (1 : 1) were evaluated by fluorescence spectrometry. Pronounced quenching in the fluorescence spectra of the ligand was only observed for the Cu2+ ion among many metal ions. Linear fluorescence responses of the ligand at 360 nm as the function of the Cu2+ concentration were used for the determination of the Cu2+ ion in spiked tap water samples. Recovery values (R%) were satisfactory, and relative standard deviation (RSD%) was below 5.00 in intraday and interday measurements. Detection and quantification limits were 0.28 and 0.84 μg/L, respectively. The assay based on external calibration only took a few minutes.
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Singhal D, Althagafi I, Kumar A, Yadav S, Prasad AK, Pratap R. Thieno[3,2-c]pyran: an ESIPT based fluorescence “turn-on” molecular chemosensor with AIE properties for the selective recognition of Zn2+ ion. NEW J CHEM 2020. [DOI: 10.1039/d0nj02236e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Thieno[3,2-c]pyran was synthesized as a fluorescent turn-on chemosensor for the selective recognition of Zn2+ ions with a low detection limit (0.67 μM), and it also exhibited AIE properties.
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Affiliation(s)
- Divya Singhal
- Department of Chemistry
- University of Delhi, North Campus
- Delhi-110007
- India
| | | | - Ashish Kumar
- Department of Chemistry
- University of Delhi, North Campus
- Delhi-110007
- India
| | - Saroj Yadav
- Department of Chemistry
- University of Delhi, North Campus
- Delhi-110007
- India
| | - Ashok K. Prasad
- Department of Chemistry
- University of Delhi, North Campus
- Delhi-110007
- India
| | - Ramendra Pratap
- Department of Chemistry
- University of Delhi, North Campus
- Delhi-110007
- India
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18
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Urban M, Durka K, Górka P, Wiosna-Sałyga G, Nawara K, Jankowski P, Luliński S. The effect of locking π-conjugation in organoboron moieties in the structures of luminescent tetracoordinate boron complexes. Dalton Trans 2019; 48:8642-8663. [PMID: 31123739 DOI: 10.1039/c9dt01332f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 8 luminescent borafluorene complexes were extensively studied both experimentally and theoretically in order to elucidate the effect of organoboron moiety rigidification on the physicochemical properties of these compounds. Due to the spiro geometry of the boron atom, borafluorene and ligand units are perpendicularly aligned, which considerably affects the flexibility of the molecule as well as its solid-state structure. Through comparative analysis with close diphenyl analogues, we show how these structural features influence the thermal, photoluminescent and charge mobility behaviour of the studied compounds. Crystal structural analysis revealed that the molecules are connected mostly through C-HO and C-Hπ interactions formed between perpendicularly aligned borafluorene and ligand moieties from neighboured molecules, serving as a complementary donor and acceptor of electron density, respectively. This also efficiently prevents molecules from engaging in unfavoured π-stacking contact. Furthermore, structural analysis suggests that borafluorene complexes possess a considerable degree of flexibility due to OBN heterocycle distortions and mutual borafluorene-ligand plane movements. The magnitude of these effects strictly depends on the ligand structure and may lead either to enhancing or lowering the quantum yield value with respect to BPh2 analogues, while the absorption and emission wavelength are slightly affected. The measured photophysical parameters for solid-state samples showed that the studied complexes are much better emitters in their crystalline states that in amorphous films. The TD-DFT and NTO calculations revealed a significant change in frontier molecular distribution, with the HOMO localized on the borafluorene moiety. However, as the HOMO-LUMO transition is geometrically not favoured, excitation occurred from HOMO-1 localized on the ligand. Finally, aggregation effects were discussed based on supramolecular arrangements in crystal structures and charge transfer rates obtained from theoretical calculations in the framework of the Marcus-Hush approximation. They suggest that borafluorene complexes are much better electron carriers with respect to non-annulated BPh2 complexes.
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Affiliation(s)
- Mateusz Urban
- Department of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Krzysztof Durka
- Department of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Patrycja Górka
- Department of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Gabriela Wiosna-Sałyga
- Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Krzysztof Nawara
- Faculty of Mathematics and Science, Cardinal Stefan Wyszyński University, Dewajtis 5, 01-815 Warsaw, Poland
| | - Piotr Jankowski
- Department of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Sergiusz Luliński
- Department of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
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Barwiolek M, Wojtczak A, Kozakiewicz A, Szczesny R, Babinska M, Skowronski L, Szlyk E. New highly fluorescent silver complexes and their thin films obtained by spin coating method. NEW J CHEM 2018. [DOI: 10.1039/c8nj03801e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thin, fluorescent films of novel silver(i) complexes were produced using a spin coating method.
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Affiliation(s)
- Magdalena Barwiolek
- Faculty of Chemistry
- Nicolas Copernicus University in Torun
- 87-100 Torun
- Poland
| | - Andrzej Wojtczak
- Faculty of Chemistry
- Nicolas Copernicus University in Torun
- 87-100 Torun
- Poland
| | - Anna Kozakiewicz
- Faculty of Chemistry
- Nicolas Copernicus University in Torun
- 87-100 Torun
- Poland
| | - Robert Szczesny
- Faculty of Chemistry
- Nicolas Copernicus University in Torun
- 87-100 Torun
- Poland
| | - Magdalena Babinska
- Faculty of Chemistry
- Nicolas Copernicus University in Torun
- 87-100 Torun
- Poland
| | - Lukasz Skowronski
- Institute of Mathematics and Physics
- UTP University of Science and Technology
- 85-796 Bydgoszcz
- Poland
| | - Edward Szlyk
- Faculty of Chemistry
- Nicolas Copernicus University in Torun
- 87-100 Torun
- Poland
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20
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Sharma R, Bali A, Chaudhari BB. Synthesis of methanesulphonamido-benzimidazole derivatives as gastro-sparing antiinflammatory agents with antioxidant effect. Bioorg Med Chem Lett 2017; 27:3007-13. [DOI: 10.1016/j.bmcl.2017.05.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/12/2017] [Accepted: 05/05/2017] [Indexed: 01/07/2023]
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21
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Rajasekar TS, Navamani P, Jayamoorthy K, Srinivasan N. 2-(4,5-Dimethyl-1-m-tolyl-1H-imidazol-2-yl)phenol as Efficient Chemosensor for On–Off Fluorescence System: Catalytic Synthesis and NMR Spectral Studies. J Inorg Organomet Polym Mater 2017; 27:962-7. [DOI: 10.1007/s10904-017-0543-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Uslu A, Tümay SO, Şenocak A, Yuksel F, Özcan E, Yeşilot S. Imidazole/benzimidazole-modified cyclotriphosphazenes as highly selective fluorescent probes for Cu2+: synthesis, configurational isomers, and crystal structures. Dalton Trans 2017; 46:9140-9156. [DOI: 10.1039/c7dt01134b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a comprehensive work and discuss the fluoroprobe properties of synthesized compounds for copper ion detection with a stereochemical approach using X-ray crystallographic analysis results.
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Affiliation(s)
- Aylin Uslu
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | | | - Ahmet Şenocak
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Fatma Yuksel
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Elif Özcan
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Serkan Yeşilot
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
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23
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Mekala R, Mani R, Rietveld IB, Jagdish P, Mathammal R, Jiang H. Crystal growth and physical properties of the organic salt benzimidazolium 3-nitrophthalate. CrystEngComm 2016. [DOI: 10.1039/c6ce01712f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Jayabharathi J, Kalaiarasi V, Thanikachalam V, Jayamoorthy K. Dynamics of Solvent Controlled ESIPT of π-Expanded Imidazole Derivatives - pH Effect. J Fluoresc 2014; 24:625-37. [PMID: 24399046 DOI: 10.1007/s10895-013-1336-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Accepted: 11/20/2013] [Indexed: 11/29/2022]
Abstract
A set of π-expanded imidazole derivatives employing excited state intramolecular proton transfer (ESIPT) was designed and synthesized. The relationship between the structure and photophysical properties were thoroughly elucidated by comparing with the analogue blocked with ESIPT functionality. The compound possessing an acidic NH function as part of an intramolecular hydrogen bond system has much higher fluorescence quantum yield and Stokes shift and the π-expansion strongly influences the optical properties. The occurrence of ESIPT for imidazole tosylamide derivatives were less affected by the hydrogen-bonding ability of the solvents compared to the unprotected amine. The low pKa values for the monocation ⇌ neutral equilibrium indicate the presence of intramolecular hydrogen bonding between the amino proton and tertiary nitrogen atom.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar, 608002, Tamilnadu, India.
| | - V Kalaiarasi
- Department of Chemistry, Annamalai University, Annamalainagar, 608002, Tamilnadu, India
| | - V Thanikachalam
- Department of Chemistry, Annamalai University, Annamalainagar, 608002, Tamilnadu, India
| | - K Jayamoorthy
- Department of Chemistry, Annamalai University, Annamalainagar, 608002, Tamilnadu, India
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Pina J, Seixas de Melo JS, Batista RMF, Costa SPG, Raposo MMM. Triphenylamine–Benzimidazole Derivatives: Synthesis, Excited-State Characterization, and DFT Studies. J Org Chem 2013; 78:11389-95. [DOI: 10.1021/jo401803u] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- João Pina
- Department of Chemistry, University of Coimbra, P3004-535 Coimbra, Portugal
| | | | - Rosa M. F. Batista
- Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Susana P. G. Costa
- Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - M. Manuela M. Raposo
- Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Jayabharathi J, Thanikachalam V, Kalaiarasi V, Jayamoorthy K. Optical properties of 1-(4,5-diphenyl-1-p-tolyl-1H-imidazol-2-yl)naphthalen-2-ol--ESIPT process. Spectrochim Acta A Mol Biomol Spectrosc 2013; 120:389-394. [PMID: 24211620 DOI: 10.1016/j.saa.2013.10.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 09/28/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
This article presents optical, electrochemical, and thermal properties of novel class of green fluorescent 1-(4,5-diphenyl-1-p-tolyl-1H-imidazol-2-yl)naphthalen-2-ol. Detailed photo physical and quantum chemical studies have been performed to elucidate the excited state intramolecular proton transfer (ESIPT) reaction leading a large stokes shifted fluorescence emission from the phototautomer. The results of quantum chemical investigations confirmed the intramolecular charge transfer characteristics of the ESIPT tautomers. The high photoluminescence quantum yield is ascribed to twisted chromophores due to phenyl substituents at 1,2-position of the imidazole ring which restricted intramolecular motion, leading to an optically allowed lowest optical transition without self quenching.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India.
| | - V Thanikachalam
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
| | - V Kalaiarasi
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
| | - K Jayamoorthy
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
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