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Pant DD. Steady State and Time-Resolved Fluorescence Spectroscopy of Cinchonine Dication in Sodium Dodecylsulphate Micellar System. J Fluoresc 2024:10.1007/s10895-024-03866-8. [PMID: 39073528 DOI: 10.1007/s10895-024-03866-8] [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: 05/25/2024] [Accepted: 07/19/2024] [Indexed: 07/30/2024]
Abstract
This paper reports the influence of surface charge of the micelles on to the photophysical properties of a cinchonine dication (C2+) fluorophore in anionic, sodium dodecylsulphate (SDS), surfactant at premicellar, micellar and post-micellar concentrations in aqueous phase at room temperature. The magnitude of edge excitation red shift (EERS) in the fluorescence maximum of C2+ in bulk water solution is 1897 cm- 1 whereas, in the case of SDS it is observed to be 1984 cm- 1. The fluorescence decay curve of C2+ fits with multi exponential functions in the micellar system. The increase in lifetime of C2+ in SDS has been attributed to the increase in radiative rate due to the incorporation of C2+ at the micelle -water interface. The value of dynamic quenching constant determined is 16.9 M- 1. The location of the probe molecule in micellar systems has been justified by a variety of spectral parameters such as dielectric constant, ET (30), viscosity, EERS, average fluorescence decay time, radiative and non-radiative rate constants. All experimental results suggest that the C2+ molecule binds strongly with the SDS micelles and resides at micellar-water interface. The binding constant (Kb) calculated (3.85 × 105 M- 1) for C2+ in SDS revealed that the electrostatic forces mediate charge probe-micelle association.
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Affiliation(s)
- Debi D Pant
- Department of Physics, Birla Institute of Technology and Science (BITS) Pilani, Pilani, Rajasthan, 333031, India.
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Shao Y, Yan Y, Wang J, Jin Q, Xu H, Zhang X. Co/SBA-16 coating supported on a 3D-printed ceramic monolith for peroxymonosulfate-activated degradation of Levofloxacin. J Colloid Interface Sci 2023; 643:137-150. [PMID: 37058889 DOI: 10.1016/j.jcis.2023.03.112] [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: 01/04/2023] [Revised: 02/26/2023] [Accepted: 03/18/2023] [Indexed: 04/16/2023]
Abstract
This study reports a simple method for anchoring dispersed Co nanoparticles on SBA-16 mesoporous molecular sieve coating grown on the 3D-printed ceramic monolith (i.e., Co@SBA-16/ceramic). The monolithic ceramic carriers with a designable versatile geometric channel could improve the fluid flow and mass transfer but exhibited a smaller surface area and porosity. The SBA-16 mesoporous molecular sieve coating was loaded onto the surface of the monolithic carriers using a simple hydrothermal crystallization strategy, which can increase the surface area of the monolithic carriers and facilitate the loading of active metal sites. In contrast to the conventional impregnation loading method (Co-AG@SBA-16/ceramic), dispersed Co3O4 nanoparticles were obtained by directly introducing Co salts into the as-made SBA-16 coating (containing a template), accompanied by conversion of the Co precursor and removal of the template after calcination. These promoted catalysts were characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, Brunauer-Emmett-Teller theory, and X-ray photoelectron spectroscopy. The developed Co@SBA-16/ceramic catalysts exhibited excellent catalytic performance for the continuous removal of levofloxacin (LVF) in fixed bed reactors. Co/MC@NC-900 catalyst exhibited a ∼ 78% degradation efficiency in 180 min compared to that of Co-AG@SBA-16/ceramic (17%) and Co/ceramic (0.7%). The improved catalytic activity and reusability of Co@SBA-16/ceramic was because of the better dispersion of the active site within the molecular sieve coating. Co@SBA-16/ceramic-1 exhibits much better catalytic activity, reusability and long-term stability than Co-AG@SBA-16/ceramic. After a 720 min continuous reaction, the LVF removal efficiency of Co@SBA-16/ceramic-1 in a 2 cm fixed-bed reactor was stable at 55%. Using chemical quenching experiments, electron paramagnetic resonance spectroscopy, and liquid chromatography-mass spectrometry, the possible LVF degradation mechanism and degradation pathways were proposed. This study provides novel PMS monolithic catalysts for the continuous and efficient degradation of organic pollutants.
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Affiliation(s)
- Yan Shao
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Yifan Yan
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jingshan Wang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Qijie Jin
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Haitao Xu
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Xueying Zhang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
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Yakupova LR, Kopnova TY, Skuredina AA, Le-Deygen IM, Shustrov PN, Novoselov AM, Kudryashova EV. The Formation of β-Cyclodextrin Complexes with Levofloxacin and Ceftriaxone as an Approach to the Regulation of Drugs’ Pharmacokinetic. COLLOID JOURNAL OF THE RUSSIAN ACADEMY OF SCIENCES 2023; 85:114-127. [PMCID: PMC10112827 DOI: 10.1134/s1061933x22600488] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 08/04/2022] [Accepted: 08/25/2022] [Indexed: 06/29/2023]
Abstract
The study has been devoted to the complexation of hydroxypropyl-β-cyclodextrin (HPCD) with antibacterial drugs, namely, ceftriaxone (CT) and levofloxacin (LV), which are used to treat respiratory diseases, including bacterial infections of the respiratory tract. FTIR and NMR spectroscopic investigations have shown that the LV–HPCD complex is formed mainly due to the inclusion of the aromatic fragment of LV into the HPCD cavity; while the CT–HPCD complex is realized on the HPCD surface. Being a more hydrophobic molecule, LV forms ten times stronger complexes with HPCD than does CT: KdisLV-HPCD ~ 10–3 M, while KdisCT-HPCD ~10–2 M at pH 7.4. It has been shown that, for singly charged forms of the drugs, the complexes are two times more stable. Fluorescence spectroscopy has been employed to study the thermodynamic parameters for the interaction of dosage forms with human serum albumin. Negative values of ΔH and ΔS of the reaction have indicated both hydrogen bonding and van der Waals interactions during the complexation of both drugs with human serum albumin. It has been found that the protein is ~4 times more strongly bound to LV at 37°C as compared with CT. The data obtained will make it possible to improve the characteristics of the studied drugs and bring the methods of treating severe forms of respiratory diseases to a new level.
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Affiliation(s)
- L. R. Yakupova
- Department of Chemistry, Moscow State University, 119296 Moscow, Russia
| | - T. Yu. Kopnova
- Department of Chemistry, Moscow State University, 119296 Moscow, Russia
| | - A. A. Skuredina
- Department of Chemistry, Moscow State University, 119296 Moscow, Russia
| | - I. M. Le-Deygen
- Department of Chemistry, Moscow State University, 119296 Moscow, Russia
| | - P. N. Shustrov
- Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), 119991 Moscow, Russia
| | - A. M. Novoselov
- Department of Chemistry, Moscow State University, 119296 Moscow, Russia
| | - E. V. Kudryashova
- Department of Chemistry, Moscow State University, 119296 Moscow, Russia
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Studies of ninhydrin and phenylalanine in cationic dimeric gemini micellar system: Spectrophotometric and conductometric measurements. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Bukhtawar F, Usman M, Akram N, Haq AU, Ahmad Z, Raza S, Younis S, Nazar MF. Enhanced solubilization of reactive dyes using mixed micellar media: insights from spectral and conductometric measurements. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05021-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Das P, Mandal P, Shit D, Pramanik S. Unraveling the effect of surfactant chain length on the binding interaction of curcumin with cationic and non‐ionic micelles. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Priyabrata Das
- Department of Chemistry University of Calcutta Kolkata India
| | - Pabitra Mandal
- Department of Chemistry University of Calcutta Kolkata India
| | - Debatri Shit
- Department of Chemistry University of Calcutta Kolkata India
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Chiş V, Vinţeler E. Excitation energies for anionic drugs predicted by PBE0, TPSS and τHCTH density functionals. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Irshad S, Sultana H, Usman M, Akram N, Farooqi ZH, Yusaf A, Nazar MF. Solubilization of direct black 2 in mixed micellar media: insights from spectroscopic and conductometric measurements. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1993890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Saira Irshad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Hamadia Sultana
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Nadia Akram
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Zahoor H. Farooqi
- School of Chemistry, University of the Punjab, New Campus, Lahore, Pakistan
| | - Amnah Yusaf
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Faizan Nazar
- Department of Chemistry, University of Education Lahore, Multan Campus, Lahore, Pakistan
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Structural and probing dynamics of Brij-35-based microemulsion for fluoroquinolone antibiotics. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04871-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Chen Y, Shi J, Du Q, Zhang H, Cui Y. Antibiotic removal by agricultural waste biochars with different forms of iron oxide. RSC Adv 2019; 9:14143-14153. [PMID: 35519302 PMCID: PMC9064014 DOI: 10.1039/c9ra01271k] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 04/29/2019] [Indexed: 11/25/2022] Open
Abstract
Pollution by antibiotics has become a serious threat to public health. In this study, agricultural waste, corn husk, in the form of biochar, was utilized for antibiotic removal from wastewater. Two kinds of iron-loaded biochars, impregnation-pyrolysis biochar (IP) and pyrolysis-impregnation biochar (PI), were synthesized to adsorb the typical antibiotics tetracycline (TC) and levofloxacin (LEV). PI contained amorphous hydrated iron oxide, whereas the major component of IP was γ-Fe2O3. Compared with IP, PI had a much higher adsorption capacity for both TC and LEV. This was because PI could provide more -OH, especially -OHads, to serve as the adsorption sites. In comparison with TC, -OH was prone to combine with LEV. FT-IR and XPS results indicated that the mechanisms of LEV adsorption included hydrogen bonding, F-replacement, electrostatic attraction and bridging bidentate complexation. TC adsorption may involve complexation, hydrogen bonding and electrostatic attraction.
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Affiliation(s)
- Yue Chen
- School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Jing Shi
- School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
- Department of Civil Engineering, McMaster University Hamilton L8S 4L7 Canada
| | - Qiong Du
- School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Haowen Zhang
- School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Yixin Cui
- School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
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Saleem MA, Nazar MF, Yameen B, Khan AM, Hussain SZ, Khalid MR. Structural Insights into the Microemulsion-Mediated Formation of Fluoroquinolone Nanoantibiotics. ChemistrySelect 2018. [DOI: 10.1002/slct.201801925] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Muhammad A. Saleem
- Department of Chemistry; Hafiz Hayat Campus; University of Gujrat; Gujrat 50700 Pakistan
- CCL Pharmaceuticals (Pvt.) Ltd; Lahore- 54000 Pakistan
| | - Muhammad F. Nazar
- Department of Chemistry; Hafiz Hayat Campus; University of Gujrat; Gujrat 50700 Pakistan
| | - Basit Yameen
- Department of Chemistry; Syed Babar Ali School of Science and Engineering (SBASSE); Lahore University of Management Sciences (LUMS); Lahore- 54792 Pakistan
| | - Asad M. Khan
- Department of Chemistry; COMSATS Institute of Information Technology; Abbottabad- 22060 Pakistan
| | - Syed Z. Hussain
- Department of Chemistry; Syed Babar Ali School of Science and Engineering (SBASSE); Lahore University of Management Sciences (LUMS); Lahore- 54792 Pakistan
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pH-Dependent Antibiotic Gatifloxacin Interacting with Cationic Surfactant: Insights from Spectroscopic and Chromatographic Measurements. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0811-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Azeem W, John P, Nazar MF, Ashfaq M, Khan IU, Sharif S, Riaz A. Fixed-Dose Combination Antibiotics Interacting with a Quaternary Ammonium Disinfectant: Insights from Spectral and Chromatographic Measurements. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0773-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kaur A, Khan IA, Banipal PK, Banipal TS. Deciphering the complexation process of a fluoroquinolone antibiotic, levofloxacin, with bovine serum albumin in the presence of additives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:259-270. [PMID: 29045929 DOI: 10.1016/j.saa.2017.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 10/04/2017] [Accepted: 10/08/2017] [Indexed: 06/07/2023]
Abstract
The current work aims to explore the thermodynamic and conformational aspects for the binding of fluoroquinolone antibacterial drug, levofloxacin (LFC), with bovine serum albumin (BSA) using calorimetric, spectroscopic (UV-visible, fluorescence, circular dichroism, and 1H NMR), dynamic light scattering (DLS) and computational methods (molecular docking). The binding of LFC with BSA at two sequential sites with higher affinity (~103M-1) at the first site has been explored by calorimetry whereas the binding at a single site with affinity of the order of ~104M-1 has been observed from fluorescence spectroscopy. The calorimetric study in the presence of additives along with docking analysis reveals the significant role of electrostatic, hydrogen bonding, and hydrophobic interactions in the association process. The slight conformational changes in protein as well as the changes in the water network structure around the binding cavity of protein have been observed from spectroscopic and DLS measurements. The LFC induced quenching of BSA fluorescence was observed to be initiated mainly through the static quenching process and this suggests the formation of ground state LFC-BSA association complex. The stronger interactions of LFC in the cavity of Sudlow site I (subdomain IIA) of protein have been explored from site marker calorimetric and molecular docking study.
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Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Imran Ahmd Khan
- School of Pharmaceutical Science and Technology,Tianjin University, Tianjin 300072, PR China
| | | | - Tarlok Singh Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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Azeem W, John P, Nazar MF, Khan IU, Riaz A, Sharif S. Spectral and chromatographic characterization of fixed dose combination norfloxacin and metronidazole interacting with cetyltrimethylammonium bromide. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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