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Arshad MN, Naegele JR. Aberrant adult neurogenesis in intractable epilepsy: can GABAergic progenitor transplantation normalize this process? Neural Regen Res 2024; 19:1419-1420. [PMID: 38051876 PMCID: PMC10883487 DOI: 10.4103/1673-5374.387994] [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] [Received: 02/22/2023] [Accepted: 09/15/2023] [Indexed: 12/07/2023] Open
Affiliation(s)
- Muhammad N Arshad
- Department of Biology, Wesleyan University, Middletown, CT, USA
- Department of Neuroscience, Tufts University School of Medicine, Boston, MA, USA
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Arshad MN, Pinto A, van Praag H, Naegele JR. Altered connectomes of adult-born granule cells following engraftment of GABAergic progenitors in the mouse hippocampus. Prog Neurobiol 2023; 226:102450. [PMID: 37061022 DOI: 10.1016/j.pneurobio.2023.102450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 09/23/2022] [Revised: 03/25/2023] [Accepted: 04/12/2023] [Indexed: 04/17/2023]
Abstract
Adult neurogenesis occurs in the dentate gyrus (DG) of the rodent hippocampus throughout life, producing new granule cells (GCs) that migrate from a stem cell niche called the subgranular zone (SGZ) into the adjacent granule cell layer (GCL). Seizures associated with temporal lobe epilepsy alter adult neurogenesis and promote the formation of hyperexcitable circuits. Stem cell therapies for treating intractable seizure disorders are based on the premise that transplantation of GABAergic interneurons will strengthen inhibitory connections within the hippocampus and reduce hyperexcitability. Grafts of medial ganglionic eminence (MGE)-derived fetal GABAergic progenitors into the DG of adult mice with pilocarpine-induced TLE have been shown to suppress spontaneous recurrent seizures. In addition, the transplanted cells formed functional inhibitory synaptic connections with hippocampal neurons, including adult-born GCs. However, it is unknown whether MGE grafts change adult-born GC connectivity. To address this question, we compared the first-order monosynaptic inputs to adult-born GCs in TLE mice with or without MGE-derived interneuron grafts. Here we show that TLE increased excitatory inputs from endogenous hippocampal, entorhinal cortex, and medial septum/diagonal band neurons onto adult-born GCs. In contrast, in TLE mice with grafts, these excitatory inputs were reduced, coinciding with transplanted GABAergic interneuron innervation of adult-born GCs. These findings indicate that GABAergic interneuron transplantation into the dentate gyrus may prevent epilepsy-associated alterations in the connectivity of adult-born GCs.
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Affiliation(s)
- Muhammad N Arshad
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
| | - Alejandro Pinto
- Stiles-Nicholson Brain Institute and Charles E. Schmidt College of Biomedical Sciences, Florida Atlantic University, Jupiter, FL, 33458, USA.
| | - Henriette van Praag
- Stiles-Nicholson Brain Institute and Charles E. Schmidt College of Biomedical Sciences, Florida Atlantic University, Jupiter, FL, 33458, USA.
| | - Janice R Naegele
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
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Arshad MN, Naegele JR. Correction notice: Measurements of Proline and Malondialdehyde Contents and Antioxidant Enzyme Activities in Leaves of Drought Stressed Cotton. Bio Protoc 2023; 5:e4752. [PMID: 36909294 PMCID: PMC9999191 DOI: 10.21769/bioprotoc.4752] [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] [Received: 10/13/2015] [Revised: 01/11/2016] [Accepted: 07/25/2016] [Indexed: 03/07/2023] Open
Affiliation(s)
- Muhammad N Arshad
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Middletown, CT, 06459, USA
| | - Janice R Naegele
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Middletown, CT, 06459, USA
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Arshad MN, Naegele JR. Correction notice: Induction of Temporal Lobe Epilepsy in Mice with Pilocarpine. Bio Protoc 2023; 5:e4753. [PMID: 36909293 PMCID: PMC9999190 DOI: 10.21769/bioprotoc.4753] [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] [Received: 09/12/2019] [Revised: 11/10/2019] [Accepted: 01/18/2020] [Indexed: 03/07/2023] Open
Affiliation(s)
- Muhammad N Arshad
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Middletown, CT, 06459, USA
| | - Janice R Naegele
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Middletown, CT, 06459, USA
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Arshad MN, Oppenheimer S, Jeong J, Buyukdemirtas B, Naegele JR. Hippocampal transplants of fetal GABAergic progenitors regulate adult neurogenesis in mice with temporal lobe epilepsy. Neurobiol Dis 2022; 174:105879. [PMID: 36183946 DOI: 10.1016/j.nbd.2022.105879] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/21/2022] [Accepted: 09/28/2022] [Indexed: 11/20/2022] Open
Abstract
GABAergic interneurons play a role in regulating adult neurogenesis within the dentate gyrus (DG) of the hippocampus. Neurogenesis occurs within a stem cell niche in the subgranular zone (SGZ) of the DG. In this niche, populations of neural progenitors give rise to granule cells that migrate radially into the granule cell layer of the DG. Altered neurogenesis in temporal lobe epilepsy (TLE) is linked to a transient increase in the proliferation of new neurons and the abnormal inversion of Type 1 progenitors, resulting in ectopic migration of Type 3 progenitors into the hilus of the DG. These ectopic cells mature into granule cells in the hilus that become hyperexcitable and contribute to the development of spontaneous recurrent seizures. To test whether grafts of GABAergic cells in the DG restore synaptic inhibition, prior work focused on transplanting GABAergic progenitors into the hilus of the DG. This cell-based therapeutic approach was shown to alter the disease phenotype by ameliorating spontaneous seizures in mice with pilocarpine-induced TLE. Prior optogenetic and immunohistochemical studies demonstrated that the transplanted GABAergic interneurons increased levels of synaptic inhibition by establishing inhibitory synaptic contacts with adult-born granule cells, consistent with the observed suppression of seizures. Whether GABAergic progenitor transplantation into the DG ameliorates underlying abnormalities in adult neurogenesis caused by TLE is not known. As a first step to address this question, we compared the effects of GABAergic progenitor transplantation on Type 1, Type 2, and Type 3 progenitors in the stem cell niche using cell type-specific molecular markers in naïve, non-epileptic mice. The progenitor transplantation increased GABAergic interneurons in the DG and led to a significant reduction in Type 2 progenitors and a concomitant increase in Type 3 progenitors. Next, we compared the effects of GABAergic interneuron transplantation in epileptic mice. Transplantation of GABAergic progenitors resulted in reductions in inverted Type 1, Type 2, and hilar ectopic Type 3 cells, concomitant with an increase in the radial migration of Type 3 progenitors into the GCL (Granule Cell Layer). Thus, in mice with Pilocarpine induced TLE, hilar transplants of GABA interneurons may reverse abnormal patterns of adult neurogenesis, an outcome that may ameliorate seizures.
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Affiliation(s)
- Muhammad N Arshad
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
| | - Simon Oppenheimer
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
| | - Jaye Jeong
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
| | - Bilge Buyukdemirtas
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
| | - Janice R Naegele
- Hall-Atwater Laboratory, Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT 06459-0170, USA.
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Babgi BA, Bawazeer M, Alzaidi NA, Arshad MN, Jedidi A, Bataweel NM, Al-Hejin AM, Hussien MA. Synthesis, characterization, theoretical, and antimicrobial studies of indenoquinoxalin-based ligands and their reactions with CuBr(PPh3)3. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130309] [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: 11/27/2022]
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Alsaedi S, Babgi BA, Abdellattif MH, Arshad MN, Emwas AHM, Jaremko M, Humphrey MG, Asiri AM, Hussien MA. DNA-Binding and Cytotoxicity of Copper(I) Complexes Containing Functionalized Dipyridylphenazine Ligands. Pharmaceutics 2021; 13:pharmaceutics13050764. [PMID: 34065613 PMCID: PMC8161420 DOI: 10.3390/pharmaceutics13050764] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023] Open
Abstract
A set of copper(I) coordination compounds with general formula [CuBr(PPh3)(dppz-R)] (dppz-R = dipyrido[3,2-a:2’,3’-c]phenazine (Cu-1), 11-nitrodipyrido[3,2-a:2’,3’-c]phenazine (Cu-2), 11-cyanodipyrido[3,2-a:2’,3’-c]phenazine (Cu-3), dipyrido[3,2-a:2’,3’-c]phenazine-11-phenone (Cu-4), 11,12-dimethyldipyrido[3,2-a:2’,3’-c]phenazine (Cu-5)) have been prepared and characterized by elemental analysis, 1H-NMR and 31P-NMR spectroscopies as well as mass spectrometry. The structure of Cu-1 was confirmed by X-ray crystallography. The effect of incorporating different functional groups on the dppz ligand on the binding into CT-DNA was evaluated by absorption spectroscopy, fluorescence quenching of EtBr-DNA adducts, and viscosity measurements. The functional groups affected the binding modes and hence the strength of binding affinities, as suggested by the changes in the relative viscosity. The differences in the quenching constants (Ksv) obtained from the fluorescence quenching assay highlight the importance of the functional groups in altering the binding sites on the DNA. The molecular docking data support the DNA-binding studies, with the sites and mode of interactions against B-DNA changing with the different functional groups. Evaluation of the anticancer activities of the five copper compounds against two different cancer cell lines (M-14 and MCF-7) indicated the importance of the functional groups on the dppz ligand on the anticancer activities. Among the five copper complexes, the cyano-containing complex (Cu-3) has the best anticancer activities.
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Affiliation(s)
- Sammar Alsaedi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (S.A.); (A.M.A.); (M.A.H.)
| | - Bandar A. Babgi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (S.A.); (A.M.A.); (M.A.H.)
- Correspondence: ; Tel.: +966-555563702
| | - Magda H. Abdellattif
- Chemistry Department, Deanship of Scientific Research, College of Sciences, Taif University, Al-Haweiah, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Muhammad N. Arshad
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Abdul-Hamid M. Emwas
- Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia;
| | - Mariusz Jaremko
- Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
| | - Mark G. Humphrey
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia;
| | - Abdullah M. Asiri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (S.A.); (A.M.A.); (M.A.H.)
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Mostafa A. Hussien
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (S.A.); (A.M.A.); (M.A.H.)
- Department of Chemistry, Faculty of Science, Port Said University, Port Said 42521, Egypt
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Arshad MN, Aaron GB, Naegele JR. Optogenetic Interrogation of ChR2-Expressing GABAergic Interneurons After Transplantation into the Mouse Brain. Methods Mol Biol 2021; 2191:235-259. [PMID: 32865749 DOI: 10.1007/978-1-0716-0830-2_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This paper describes research methods to investigate the development of synaptic connections between transplanted GABAergic interneurons and endogenous neurons in the adult mouse hippocampus. Our protocol highlights methods for retroviral labeling adult-born GCs, one of the few cell types in the adult brain to be continuously renewed throughout life. By precise targeting of the retrovirus, labeling of adult-born GCs can be combined with optogenetic stimulation of the transplanted cells and electrophysiology in brain slices, to test whether the GABAergic interneurons integrate and establish inhibitory synaptic connections with host brain neurons. Modifications to adult neurogenesis are an important contributing factor in the development and severity of TLE and seizures. When combined with retroviral labeling, the approaches we describe in this chapter can be used to determine whether transplantation modifies the process of adult neurogenesis or other properties of the hippocampus. These approaches are helping to define parameters for potential cell replacement therapies to be used in patients with intractable seizure disorders.
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Affiliation(s)
- Muhammad N Arshad
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Room 257, Hall-Atwater Laboratory, Middletown, CT, USA
| | - Gloster B Aaron
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Room 257, Hall-Atwater Laboratory, Middletown, CT, USA
| | - Janice R Naegele
- Department of Biology, Program in Neuroscience and Behavior, Wesleyan University, Room 257, Hall-Atwater Laboratory, Middletown, CT, USA.
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Affiliation(s)
- Mohamed M. El-bendary
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Muhammad N. Arshad
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdullah M. Asiri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Nath I, Chakraborty J, Khan A, Arshad MN, Azum N, Rab MA, Asiri AM, Alamry KA, Verpoort F. Conjugated mesoporous polyazobenzene–Pd(II) composite: A potential catalyst for visible-light-induced Sonogashira coupling. J Catal 2019. [DOI: 10.1016/j.jcat.2019.07.031] [Citation(s) in RCA: 12] [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] [Indexed: 10/26/2022]
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El-bendary MM, Rüffer T, Arshad MN, Asiri AM. Synthesis and structure characterization of Pt(IV) and Cd(II) 1,10-phenanthroline complexes; fluorescence, antitumor and photocatalytic property. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.115] [Citation(s) in RCA: 5] [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: 10/26/2022]
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Rahman MM, Hussain MM, Arshad MN, Awual MR, Asiri AM. Arsenic sensor development based on modification with (E)-N′-(2-nitrobenzylidine)-benzenesulfonohydrazide: a real sample analysis. NEW J CHEM 2019. [DOI: 10.1039/c9nj01567a] [Citation(s) in RCA: 126] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
(E)-N′-(2-Nitrobenzylidene)-benzenesulfonohydrazide was prepared from 2-nitrobenzaldehyde and benzenesulfonylhydrazine by using a condensation method and applied as a selective As3+ sensor.
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Affiliation(s)
- Mohammed M. Rahman
- Chemistry Department, Faculty of Science, King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
- Center of Excellence for Advanced Materials Research, King Abdulaziz University
- Jeddah 21589
| | - Mohammad Musarraf Hussain
- Chemistry Department, Faculty of Science, King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
- Center of Excellence for Advanced Materials Research, King Abdulaziz University
- Jeddah 21589
| | - Muhammad N. Arshad
- Chemistry Department, Faculty of Science, King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
- Center of Excellence for Advanced Materials Research, King Abdulaziz University
- Jeddah 21589
| | - Md. Rabiul Awual
- Center of Excellence for Advanced Materials Research, King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
- Center of Excellence for Advanced Materials Research, King Abdulaziz University
- Jeddah 21589
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Hussain M, Rahman MM, Arshad MN, Asiri AM. Hg 2+ Sensor Development Based on ( E)- N'-Nitrobenzylidene-Benzenesulfonohydrazide (NBBSH) Derivatives Fabricated on a Glassy Carbon Electrode with a Nafion Matrix. ACS Omega 2017; 2:420-431. [PMID: 31457448 PMCID: PMC6641063 DOI: 10.1021/acsomega.6b00359] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 01/25/2017] [Indexed: 05/05/2023]
Abstract
Three novel derivatives of (E)-N'-nitrobenzylidene-benzenesulfonohydrazide (NBBSH) were synthesized by a condensation method from nitrobenzaldehyde and benzenesulfonylhydrazine reactants in low to moderate yields, which crystallized in methanol, acetone, ethyl acetate, and ethanol. NBBSH derivatives were totally characterized using various spectroscopic techniques, such as Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, proton nuclear magnetic resonance spectroscopy (1H NMR), and carbon-13 nuclear magnetic resonance (13C NMR) spectroscopy. The molecular structure of the NBBSH derivates was confirmed by the single crystal X-ray diffraction method and used for potential detection of a selective heavy metal ion, mercury (Hg2+), by a reliable I-V method. A thin coating of NBBSH derivatives was deposited on a glassy carbon electrode (surface area = 0.0316 cm2) with a binder (nafion) coating to modify a sensitive and selective Hg2+ sensor with a short response time in phosphate buffer. The modified cationic sensor exhibited enhanced chemical performances, such as higher sensitivity, linear dynamic range, limit of detection (LOD), reproducibility, and long-term stability toward Hg2+. The calibration curve was found to be linear over a wide range of Hg2+ concentrations (100.0 pM-100.0 mM). The sensitivity and LOD were considered to be ∼949.0 pA μM-1cm-2 and 10.0 ± 1.0 pM (S/N = 3), respectively. The sensor was applied to the selective measurement of Hg2+ in spiked water samples to give acceptable and satisfactory results.
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Pannipara M, Asiri AM, Alamry KA, Arshad MN, El-Daly SA. Synthesis, spectral behaviour and photophysics of donor-acceptor kind of chalcones: Excited state intramolecular charge transfer and fluorescence quenching studies. Spectrochim Acta A Mol Biomol Spectrosc 2015; 136 Pt C:1893-1902. [PMID: 25467684 DOI: 10.1016/j.saa.2014.10.105] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 10/13/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
The spectral and photophysical properties of two chalcones containing electron donating and accepting groups with intramolecular charge transfer characteristics were synthesized and characterized by (1)H NMR, (13)C NMR and X-ray crystallography. Both compounds show very strong solvent polarity dependent changes in their photophysical characteristics, namely, remarkable red shift in the emission spectra with increasing solvent polarity, large change in Stokes shift, significant reduction in the fluorescence quantum yield; indicating that the fluorescence states of these compounds are of intramolecular charge transfer (ICT) character. The solvent effect on the photophysical parameters such as singlet absorption, molar absorptivity, oscillator strength, dipole moment, fluorescence spectra, and fluorescence quantum yield of both compounds have been investigated comprehensively. For both dyes, Lippert-Mataga and Reichardt's correlations were used to estimate the difference between the excited and ground state dipole moments (Δμ). The interactions of dyes with colloidal silver nanoparticles (Ag NPs) were also studied in ethanol using steady state fluorescence quenching measurements. The fluorescence quenching data reveal that dynamic quenching and energy transfer play a major role in the fluorescence quenching of dyes by Ag NPs.
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Affiliation(s)
- Mehboobali Pannipara
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Abdullah M Asiri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Khalid A Alamry
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Muhammad N Arshad
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Samy A El-Daly
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Department of Chemistry, Faculty of Science, Tanta University, 31527 Tanta, Egypt.
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Asiri AM, Akkurt M, Khan IU, Arshad MN, Khan SA. (2 Z)-2-(4-Methylphenyl)-3-(2-naphthyl)prop-2-enenitrile. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o2409. [PMID: 21577869 PMCID: PMC2970233 DOI: 10.1107/s1600536809034229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Accepted: 08/26/2009] [Indexed: 12/03/2022]
Abstract
In the title compound, C20H15N, the dihedral angle between the naphthalene and benzene rings is 60.30 (16)°. The crystal packing features very weak intermolecular C—H⋯π interactions.
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Asiri AM, Akkurt M, Khan SA, Khan IU, Arshad MN. Ethyl ( Z)-2-cyano-3-(9-ethyl-9 H-carbazol-3-yl)prop-2-enoate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o1169. [PMID: 21583971 PMCID: PMC2977834 DOI: 10.1107/s1600536809015505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Accepted: 04/25/2009] [Indexed: 11/10/2022]
Abstract
In the title compound, C20H18N2O2, weak intermolecular C—H⋯O and C—H⋯N interactions generate a chain that runs parallel to the b axis and incorporates C(7) and R22(15) graph-set motifs. The supramolecular aggregation is completed by the presence of weak C—H⋯π interactions.
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Asiri AM, Akkurt M, Khan IU, Arshad MN. 4-(2-Methoxy-benzyl-idene)-2-phenyl-1,3-oxazol-5(4H)-one. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o842. [PMID: 21582561 PMCID: PMC2968875 DOI: 10.1107/s1600536809010216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Accepted: 03/19/2009] [Indexed: 11/10/2022]
Abstract
The title mol-ecule, C(17)H(13)NO(3), adopts a Z configuration about the central olefinic bond. The 2-phenyl ring is almost coplanar with the plane of the oxazolone ring system, making a dihedral angle of 2.03 (11)°. The crystal structure is stabilized by π-π inter-actions between the oxazolone ring and phenyl ring of a neighbouring mol-ecule [centroid-centroid distance = 3.550 (3)Å], and by two weak inter-molecular C-H⋯π inter-actions. In addition, the crystal structure exhibits one weak intra-molecular C-H⋯N hydrogen bond.
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Gibson CM, Moynihan JL, Al-Mousa EN, Campsey M, Gandhi R, Murphy S, Mattson S, Ryan KA, Mesley R, Swanson J, Arshad MN, Marble SJ. Glycoprotein IIb/IIIa receptor inhibition in interventional cardiology. J Thromb Thrombolysis 1999; 7:287-302. [PMID: 10375390 DOI: 10.1023/a:1008935227780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- C M Gibson
- Cardiovascular Division of the Department of Medicine, Allegheny General Hospital, Pittsburgh, Pennsylvania 15212, USA
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