1
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Flores-Holguín N, Abbas A, Glossman-Mitnik D. Influence on the reactivity properties of the substitution by different halogens on the conjugated backbone of the 1,3,5-triaryl-2-pyrazoline skeleton in relation to the increasing alkyloxy chain length: a conceptual density functional theory study. J Mol Model 2020; 26:174. [PMID: 32524215 DOI: 10.1007/s00894-020-04420-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 05/12/2020] [Indexed: 10/24/2022]
Abstract
A series of non-substituted 1,3,5-triaryl-2-pyrazolines and pyrazolines substituted with Fluoro (-F), Chloro (-Cl) and Bromo (-Br) groups at the 3-aryl position were studied. All calculations were done using the conceptual framework of density functional theory. The geometries and reactivity properties were analyzed according to an increase from one to twelve alkyl units in the 5-aryl of 2-pyrazoline ring. In order to be able to apply the particular methodology named KID procedure (for Koopmans in DFT), the KID descriptors were calculated and the results showed that the use of this approximation (Koopmans' theorem in DFT studies) is feasible. The results for the geometries determined that the increase of the chain with alkyl units does not affect the geometry of the systems. However, the solvation energy also calculated is affected by this increase in the allyl chain length. Due to this, as the chains increases, the solubility of the molecular systems diminishes. The chemical reactivity properties were determined by calculating the descriptors that arise from conceptual DFT and it could be demonstrated that they are not affected by the chain growth. Slight differences were found due to the different halogen substitutions. Finally, it could be observed that all the pyrazolines present an important electrophilic behavior. Graphical Abstract Properties changes in relation to the increasing alkyloxy chain length and halogens presence.
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Affiliation(s)
- Norma Flores-Holguín
- Laboratorio Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, 31136, Chihuahua, Chih, Mexico.
| | - Asghar Abbas
- Department of Chemistry, Faculty of Sciences, University of Chakwal, Chakwal, 48800, Pakistan
| | - Daniel Glossman-Mitnik
- Laboratorio Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, 31136, Chihuahua, Chih, Mexico
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2
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Wazzan NA. Investigation on the performance of PCM/TD-DFT functionals (standard pure, hybrid and long-range corrected) in simulating the absorption and emission spectra of 1-(2,5-dimethylfuran-3-yl)-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-one dye in different solvents. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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3
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Xing D, Hou Y, Niu H. Synthesis and fluorescence properties of some difluoroboron β-diketonate complexes and composite containing PMMA. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:71-77. [PMID: 29223056 DOI: 10.1016/j.saa.2017.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 11/07/2017] [Accepted: 12/01/2017] [Indexed: 06/07/2023]
Abstract
A series of difluoroboron β-diketonate complexes, containing the indon-β-diketonate ligand carrying methyl or methoxyl substituents was synthesized. The crystal structures of the complexes were confirmed by single crystal X-ray diffraction studies. The fluorescence properties of compounds were studied in solution state, solid state and on PMMA polymer matrix. The photophysical data of compounds 2a-2d exhibited strong fluorescence and photostability under the ultraviolet light (Hg lamp). The complex 2b showed higher fluorescence intensity in solution state as compared to other complexes of the series. The complexes 2c and 2d showed higher fluorescence intensity in the solid state, which are ascribed to the stronger π-π interactions between ligands in the solid state. The introduction of methoxyl or methyl groups on the benzene rings enhanced the absorption intensity, emission intensity, quantum yields and fluorescence lifetimes due to their electron-donating nature. Furthermore, the complex 2b was doped into the PMMA to produce hybrid materials, where the PMMA matrix acted as sensitizer for the central boron ion to enhance the fluorescence emission intensity and quantum yields.
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Affiliation(s)
- Dongye Xing
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China
| | - Yanjun Hou
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China.
| | - Haijun Niu
- Key Laboratory of Functional Inorganic Material Chemistry, Heilongjiang University, Harbin 150080, PR China.
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4
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Zhang L, Liu J, Gao J, Zhang F, Ding L. High Solid Fluorescence of a Pyrazoline Derivative through Hydrogen Bonding. Molecules 2017; 22:molecules22081304. [PMID: 28777332 PMCID: PMC6152280 DOI: 10.3390/molecules22081304] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 11/30/2022] Open
Abstract
Pyrazoline and its derivatives often exhibit strong emissions in dilute solutions, but their emission intensity is often dramatically reduced in the solid state due to strong intermolecular interactions between neighboring molecules. In this report, we successfully synthesized a new pyrazoline 4-(3-(4-(decyloxy)phenyl)-1-(2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl)-4,5-dihydro-1H-pyrazol-5-yl)-N,N-diethylaniline (PPDPD), into which seven fluorine (F) atoms were incorporated. In the solid state, PPDPD emits a strong blue light at λmax 430 nm with a fluorescence quantum yield of up to 41.3%. Single-crystal analysis showed the presence of intra/intermolecular C-H···F bonds that may impede molecular motion and block the non-radiative decay channel. Compound PPDPD therefore shows high emission efficiency in the solid state.
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Affiliation(s)
- Liang Zhang
- School of Material Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Jie Liu
- State Key Laboratory of Crystal Materials, Shandong University, Shandong 250100, China.
| | - Junkuo Gao
- College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Feng Zhang
- School of Material Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Liang Ding
- School of Material Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
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5
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Ashraf S, Hameed S, Tahir MN, Naseer MM. Synthesis and crystal structure of bis-chalcone-derived fused-ring pyrazoline having an unusual substitution pattern. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-1995-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Gazzeh H, Boudriga S, Askri M, Khatyr A, Knorr M, Strohmann C, Golz C, Rousselin Y, Kubicki MM. Stoichiometry-controlled cycloaddition of nitrilimines with unsymmetrical exocyclic dienones: microwave-assisted synthesis of novel mono- and dispiropyrazoline derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra09703k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The Microwave-assisted 1,3-dipolar cycloaddition of (E,E)-1,3-bisarylidenetetral-2-ones with nitrilimines affords a series of mono- and dispiropyrazolines in good to excellent yields.
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Affiliation(s)
- Houda Gazzeh
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR
- Department of Chemistry
- Faculty of Science of Monastir
- 5000 Monastir
- Tunisia
| | - Sarra Boudriga
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR
- Department of Chemistry
- Faculty of Science of Monastir
- 5000 Monastir
- Tunisia
| | - Moheddine Askri
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR
- Department of Chemistry
- Faculty of Science of Monastir
- 5000 Monastir
- Tunisia
| | - Abderrahim Khatyr
- Institut UTINAM – UMR CNRS 6213
- Université de Franche-Comté
- 25030 Besançon
- France
| | - Michael Knorr
- Institut UTINAM – UMR CNRS 6213
- Université de Franche-Comté
- 25030 Besançon
- France
| | | | | | - Yoann Rousselin
- Institute of Molecular Chemistry – UMR CNRS 6302
- University of Bourgogne
- F-21078 Dijon
- France
| | - Marek M. Kubicki
- Institute of Molecular Chemistry – UMR CNRS 6302
- University of Bourgogne
- F-21078 Dijon
- France
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7
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Varghese B, Al-Busafi SN, Suliman FO, Al-Kindy SMZ. Study on the spectral and inclusion properties of a sensitive dye, 3-naphthyl-1-phenyl-5-(5-fluoro-2-nitrophenyl)-2-pyrazoline, in solvents and β-cyclodextrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:661-671. [PMID: 25448966 DOI: 10.1016/j.saa.2014.09.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 09/13/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
3-Naphthyl-1-phenyl-5-(5-fluoro-2-nitrophenyl)-2-pyrazoline (NPFP), a fluorogenic probe and its derivative NPFP-Phenylephrine were synthesized and their absorption and fluorescence properties were recorded in solvents of varying polarity. Spectroscopic studies reveal that, the solvatochromic behavior of the compounds depend not only on the polarity but also on the hydrogen-bonding properties of the solvents. The effects of β-cyclodextrin on the fluorescence properties of both compounds were studied. It was found that there is an enhancement in the fluorescence intensity of labeled drug (NPFP-Phenylephrine) in the presence of β-cyclodextrin. In the present study, the molecular motions of NPFP-Phenylephrine embedded in a β-cyclodextrin cavity have been investigated by fluorescence techniques in steady-state and time resolved modes.
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Affiliation(s)
- Beena Varghese
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman
| | - Saleh N Al-Busafi
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman
| | - FakhrEldin O Suliman
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman.
| | - Salma M Z Al-Kindy
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman.
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8
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Hameed A, Shafiq Z, Yaqub M, Hussain M, Hussain MA, Afzal M, Tahir MN, Naseer MM. Me3N-promoted synthesis of 2,3,4,4a-tetrahydroxanthen-1-one: preparation of thiosemicarbazone derivatives, their solid state self-assembly and antimicrobial properties. NEW J CHEM 2015. [DOI: 10.1039/c5nj01879j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thiosemicarbazones (5a–5j) have been synthesized from 2,3,4,4a-tetrahydroxanthen-1-one, obtained in high yield through Me3N-promoted domino Baylis–Hillman/oxa-Michael reaction. Their solid-state self-assembly and antimicrobial properties are studied.
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Affiliation(s)
- Aminah Hameed
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Zahid Shafiq
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Muhammad Yaqub
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Mazhar Hussain
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | | | - Muhammad Afzal
- Department of Chemistry
- University of Sargodha
- Sargodha
- Pakistan
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9
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Abbas A, Flores-Holguin N, Naseer MM. Structure-fluorescence relationship: interplay of non-covalent interactions in homologous 1,3,5-triaryl-2-pyrazolines. NEW J CHEM 2015. [DOI: 10.1039/c5nj00179j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new homologous 1,3,5-triaryl-2-pyrazolines have been synthesized to understand the interplay of non-covalent interactions in the context of a structure-fluorescence relationship.
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Affiliation(s)
- Asghar Abbas
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
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10
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Abbas A, Hussain S, Hafeez N, Naseer MM. Synthesis and spectral characterization of new homologous 1,3,5-triaryl-2-pyrazolines: Influence of alkyloxy chain length on fluorescence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:182-189. [PMID: 24945858 DOI: 10.1016/j.saa.2014.05.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 05/07/2014] [Accepted: 05/14/2014] [Indexed: 06/03/2023]
Abstract
Twelve new homologous 1,3,5-triaryl-2-pyrazolines (1c-12c) have been synthesized and characterized on the basis of their spectral (IR, (1)H and (13)C NMR and MS) data and microanalysis. The influence of alkyloxy chain length on absorption and fluorescence properties of 1c-12c was studied by UV-Vis and emission spectroscopy. For all the compounds, fluorescence was observed in the blue region of the visible spectrum. Furthermore, a strong influence of alkyloxy chain length was found on the emission intensity of 1,3,5-triaryl-2-pyrazolines, without causing any major blue- or red-shift in the emission wavelength (λmax(em)). The absorption and emission maxima (λmax(abs) and λmax(em)) for all the compounds were observed in the range of 408-416nm and 471-476nm, respectively. The effect of chloro-substituent present on the conjugated backbone of 1,3,5-triaryl-2-pyrazoline moiety is also discussed.
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Affiliation(s)
- Asghar Abbas
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Safdar Hussain
- Department of Forensic Medicine & Toxicology, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | - Noureen Hafeez
- Department of Forensic Medicine & Toxicology, Rawalpindi Institute of Health Sciences (RIHS), Bahria University, Islamabad, Pakistan
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11
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Abbas A, Kalsoom S, Hadda TB, Naseer MM. Evaluation of 4-alkoxychalcones as a new class of antiglycating agents: a combined experimental and docking study. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1752-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Anam F, Abbas A, Lo KM, Zia-ur-Rehman ZUR, Hameed S, Naseer MM. Homologous 1,3,5-triarylpyrazolines: synthesis, CH⋯π interactions guided self-assembly and effect of alkyloxy chain length on DNA binding properties. NEW J CHEM 2014. [DOI: 10.1039/c4nj00938j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, CH⋯π interactions-driven self-assembled structure and DNA binding properties (105–106M−1binding constants) of new homologous 1,3,5-triaryl-2-pyrazolines are reported.
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Affiliation(s)
- Faiza Anam
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320, Pakistan
| | - Asghar Abbas
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320, Pakistan
| | - Kong Mun Lo
- Department of Chemistry
- University of Malaya
- Kuala Lumpur 50603, Malaysia
| | | | - Shahid Hameed
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320, Pakistan
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