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Gu Y, Wu S, Luo Z, Lin LL, Ye J. Oppositely-charged silver nanoparticles enable selective SERS molecular enhancement through electrostatic interactions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124852. [PMID: 39053115 DOI: 10.1016/j.saa.2024.124852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 06/27/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
Label-free surface-enhanced Raman spectroscopy (SERS) has attracted extensive attention as an emerging technique for molecular phenotyping of biological samples. However, the selective enhancement property of SERS mediated by complicated interactions between substrates and analytes is unfavorable for molecular profiling. The electrostatic force is among the most dominating interactions that can cause selective adsorption of molecules to charged substrates. This means if only negatively- or positively-charged SERS substrates are applied, then considerable SERS information from a portion of analytes would be lost, hindering comprehensive SERS sensing. In this work, we utilize both negatively- and positively-charged colloidal silver (Ag) nanoparticles (NPs) to detect various charged molecules. The negatively-charged citrate-stabilized Ag and the positively-charged Ag prepared via a cetyltrimethyl-ammonium chloride-based charge reversal protocol have been adopted as SERS substrates. The Ag NPs are all relatively well-dispersed with good uniformity. After applying the oppositely-charged NPs to the detection of charged molecules, we find the SERS results explicitly demonstrate the electrostatically-driven SERS selective enhancement, which is further supported and clarified by molecular electrostatic potential calculations. Our work highlights the importance of developing SERS substrates modified with appropriate surface charges for various analytes, and enlightens us that potentially more molecular SERS information can be acquired from complex bio-samples using combinations of oppositely-charged substrates.
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Affiliation(s)
- Yuqing Gu
- State Key Laboratory of Systems Medicine for Cancer, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, PR China
| | - Siyi Wu
- State Key Laboratory of Systems Medicine for Cancer, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, PR China
| | - Zhewen Luo
- State Key Laboratory of Systems Medicine for Cancer, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, PR China
| | - Linley Li Lin
- State Key Laboratory of Systems Medicine for Cancer, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, PR China.
| | - Jian Ye
- State Key Laboratory of Systems Medicine for Cancer, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, PR China; Institute of Medical Robotics, Shanghai Jiao Tong University, Shanghai 200240, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China.
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2
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Chu Q, Sun Y, Yu S, Sun C, Jirigalantu, Song N, Li F, Li X, Bayanheshig. High-resolution, broad-spectral-range Raman measurement using a spatial heterodyne spectrometer with separate filters and multi-gratings. OPTICS EXPRESS 2024; 32:17667-17688. [PMID: 38858944 DOI: 10.1364/oe.507639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 04/11/2024] [Indexed: 06/12/2024]
Abstract
We propose a high-resolution, broad-spectral-range spatial heterodyne Raman spectrometer (SHRS) having separate filters and multi-gratings (SFMG). A prototype of the SFMG-SHRS is built using multi-gratings with four sub-gratings having groove densities of 320, 298, 276, and 254 gr/mm and separate filters with filter bands corresponding to the sub-gratings. We use the SFMG-SHRS to measure the Raman spectra of inorganic and organic compounds with various integration times, laser power, and transparent containers, compare measurements of microplastics with and without the separate filters, and measure mixtures of inorganic powders and organic solutions. The designed SFMG-SHRS makes high-resolution, broad-spectral-range Raman measurements with improved signal-to-noise ratios and visibility of weak Raman peaks even in the presence of fluorescence.
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3
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Tas A, Tüzün B, Khalilov AN, Taslimi P, Ağbektas T, Cakmak NK. In vitro cytotoxic effects, in silico studies, some metabolic enzymes inhibition, and vibrational spectral analysis of novel β-amino alcohol compounds. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Abbas AM, Aboelmagd A, Kishk SM, Nasrallah HH, Boyd WC, Kalil H, Orabi AS. A Novel Ibuprofen Derivative and Its Complexes: Physicochemical Characterization, DFT Modeling, Docking, In Vitro Anti-Inflammatory Studies, and DNA Interaction. Molecules 2022; 27:molecules27217540. [PMID: 36364366 PMCID: PMC9653649 DOI: 10.3390/molecules27217540] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
A novel derivative of ibuprofen and salicylaldehyde N′-(4-hydroxybenzylidene)-2-(4-isobutylphenyl) propane hydrazide (HL) was synthesized, followed by its complexation with Cu, Ni, Co, Gd, and Sm. The compounds obtained were characterized by 1HNMR, mass spectrometry, UV-Vis spectroscopy, FT-IR spectroscopy, thermal analysis (DTA and TGA), conductivity measurements, and magnetic susceptibility measurements. The results indicate that the complexes formed were [Cu(L)(H2O)]Cl·2H2O, [Ni(L)2], [Co(L)2]·H2O, [Gd(L)2(H2O)2](NO3)·2H2O and [Sm(L)2(H2O)2](NO3)·2H2O. The surface characteristics of the produced compounds were evaluated by DFT calculations using the MOE environment. The docking was performed against the COX2 targeting protein (PDB code: 5IKT Homo sapiens). The binding energies were −7.52, −9.41, −9.51, −8.09, −10.04, and −8.05 kcal/mol for HL and the Co, Ni, Cu, Sm, and Gd complexes, respectively, which suggests the enhancement of anti-inflammatory behaviors compared with the binding energy of ibuprofen (−5.38 kcal/mol). The anti-inflammatory properties of the new compounds were assessed in vitro using the western blot analysis method and the enzyme-linked immunosorbent assay (ELISA), consistent with the outcomes obtained from docking. The half-maximal inhibitory concentration (IC50) values are 4.9, 1.7, 3.7, 5.6, 2.9, and 2.3 µM for HL and the Co, Ni, Cu, Sm, and Gd complexes, respectively, showing that they are more effective inhibitors of COX2 than ibuprofen (IC50 = 31.4 µM). The brain or intestinal estimated permeation method (BOILED-Egg) showed that HL and its Co complex have high gastrointestinal absorption, while only the free ligand has high brain penetration. The binding constants of Co, Cu, and Gd complexes with DNA were recorded as 2.20 × 104, 2.27 × 106, and 4.46 × 103 M−1, respectively, indicating the intercalator behavior of interaction. The newly synthesized ibuprofen derivative and its metal complexes showed greater anti-inflammatory activity than ibuprofen.
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Affiliation(s)
- Abbas M. Abbas
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (A.M.A.); (H.K.); (A.S.O.)
| | - Ahmed Aboelmagd
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Safaa M. Kishk
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Hossam H. Nasrallah
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
- Chemistry Department, Faculty of Dentistry, Sinai University, Kantara 41612, Egypt
| | | | - Haitham Kalil
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
- Chemistry Department, Cleveland State University, Cleveland, OH 44115, USA
- Correspondence: (A.M.A.); (H.K.); (A.S.O.)
| | - Adel S. Orabi
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (A.M.A.); (H.K.); (A.S.O.)
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5
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Raman-Guided Bronchoscopy: Feasibility and Detection Depth Studies Using Ex Vivo Lung Tissues and SERS Nanoparticle Tags. PHOTONICS 2022. [DOI: 10.3390/photonics9060429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Image-guided and robotic bronchoscopy is currently under intense research and development for a broad range of clinical applications, especially for minimally invasive biopsy and surgery of peripheral pulmonary nodules or lesions that are frequently discovered by CT or MRI scans. Optical imaging and spectroscopic modalities at the near-infrared (NIR) window hold great promise for bronchoscopic navigation and guidance because of their high detection sensitivity and molecular/cellular specificity. However, light scattering and background interference are two major factors limiting the depth of tissue penetration of photons, and diseased lesions such as small tumors buried under the tissue surface often cannot be detected. Here we report the use of a miniaturized Raman device that is inserted into one of the bronchoscope channels for sensitive detection of “phantom” tumors using fresh pig lung tissues and surface-enhanced Raman scattering (SERS) nanoparticle tags. The ex vivo results demonstrate not only the feasibility of using Raman spectroscopy for endoscopic guidance, but also show that ultrabright SERS nanoparticles allow detection through a bronchial wall of 0.85 mm in thickness and a 5 mm-thick layer of lung tissue (approaching the fourth-generation airway). This work highlights the prospects and potential of Raman-guided bronchoscopy for minimally invasive imaging and detection of lung lesions.
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6
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Oweis Y, El-Hadad A, Mezour M, Abdallah MN, Retrouvey J, El-Khoury R, Cerruti M, Tamimi F. Disclosing Agent for Resin Composite Based on Adsorption Surface Treatment. ACS APPLIED BIO MATERIALS 2021; 4:7222-7233. [DOI: 10.1021/acsabm.1c00734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yara Oweis
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada
- School of Dentistry, University of Jordan, Amman 19328, Jordan
| | - Amir El-Hadad
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada
| | - Mohamed Mezour
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada
| | - Mohamed-Nur Abdallah
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada
- Faculty of Dentistry, University of Toronto, Toronto, Ontario M5G 1G6, Canada
| | - Jean Retrouvey
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada
| | - Roland El-Khoury
- McGill University Health Centre-Montreal General Hospital Montreal, Quebec H4A 3J1, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0E9, Canada
| | - Faleh Tamimi
- College of Dental Medicine, QU Health, Qatar University, Doha 122104, Qatar
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7
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Sheena Mary Y, Shyma Mary Y, Temiz-Arpaci O, Yadav R, Celik I. DFT, docking, MD simulation, and vibrational spectra with SERS analysis of a benzoxazole derivative: an anti-cancerous drug. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01659-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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8
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Abstract
Surface-enhanced Raman scattering (SERS) nanotags are widely used in the biomedical field including live-cell imaging due to the high specificity from their fingerprint spectrum and the multiplexing capability from the ultra-narrow linewidth. However, long-term live-cell Raman imaging is limited due to the photodamage from a relatively long exposure time and a high laser power, which are needed for acquiring detectable Raman signals. In this work, we attempt to resolve this issue by developing ultrabright gap-enhanced resonance Raman tags (GERRTs), consisting of a petal-like gold core and a silver shell with the near-infrared resonant reporter of IR-780 embedded in between, for long-term and high-speed live-cell imaging. GERRTs exhibit an ultrahigh Raman intensity down to a single-nanoparticle level in aqueous solution and the solid state upon 785 nm excitation, allowing for high-resolution time-lapse live-cell Raman imaging with an exposure time of 1 ms per pixel and a laser power of 50 μW. Under these measurement conditions, we can possibly capture dynamic cellular processes with a high temporal resolution, and track living cells for long periods of time owing to the reduced photodamage to cells. These nanotags open new opportunities for ultrasensitive, low-phototoxic, and long-term live-cell imaging.
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Affiliation(s)
- Yuqing Gu
- Department of Nuclear Medicine, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P. R. China.
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9
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Vehiculation of Methyl Salicylate from Microcapsules Supported on Textile Matrix. MATERIALS 2021; 14:ma14051087. [PMID: 33652651 PMCID: PMC7956389 DOI: 10.3390/ma14051087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/03/2020] [Accepted: 02/11/2020] [Indexed: 11/17/2022]
Abstract
In recent years, textile industries have focused their attention on the development of functional finishing that presents durability and, consequently, controlled release. However, in the case of methyl salicylate microcapsules supported on a textile matrix, studies indicate only the interactions between substrate and microcapsules and the drug delivery system, not applying the release equations. This study reports the mechanism and kinetics of controlled release of microcapsules of gelatin and gum Arabic containing methyl salicylate as active ingredient incorporated into textile matrices. According to the results presented, it was possible to verify that the wall materials participated in the coacervation process, resulting in microcapsules with well-defined geometry, besides promoting the increase of the thermal stability of the active principle. The samples (100% cotton, CO, and 100% polyamide, PA) functionalized with microcapsules released methyl salicylate in a controlled manner, based on the adjustment made by the Korsmeyer–Peppas model, indicating a Fickian mechanism. The influence of temperature was noticeable when the samples were subjected to washing, since with higher temperature (50 °C), the release was more pronounced than when subjected to lower temperature (37 °C). The results presented in this study indicate that the mechanism of backbone release is influenced by the textile matrix and by the durability of the microcapsule during the wash cycles.
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10
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Takele WM, Piatkowski L, Wackenhut F, Gawinkowski S, Meixner AJ, Waluk J. Scouting for strong light-matter coupling signatures in Raman spectra. Phys Chem Chem Phys 2021; 23:16837-16846. [PMID: 34323915 DOI: 10.1039/d1cp01863a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strong coupling between vibrational transitions and a vacuum field of a cavity mode leads to the formation of vibrational polaritons. These hybrid light-matter states have been widely explored because of their potential to control chemical reactivity. However, the possibility of altering Raman scattering through the formation of vibrational polaritons has been rarely reported. Here, we present the Raman scattering properties of different molecules under vibrational strong coupling conditions. The polariton states are clearly observed in the IR transmission spectra of the coupled system for benzonitrile and methyl salicylate in liquid phase and for polyvinyl acetate in a solid polymer film. However, none of the studied systems exhibits a signature of the polariton states in the Raman spectra. For the solid polymer film, we have used cavities with different layer structures to investigate the influence of vibrational strong coupling on the Raman spectra. The only scenario where alterations of the Raman spectra are observed is for a thin Ag layer being in direct contact with the polymer film. This shows that, even though the system is in the vibrational strong coupling regime, changes in the Raman spectra do not necessarily result from the strong coupling, but are caused by the surface enhancement effects.
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Affiliation(s)
- Wassie Mersha Takele
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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11
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Takele WM, Wackenhut F, Piatkowski L, Meixner AJ, Waluk J. Multimode Vibrational Strong Coupling of Methyl Salicylate to a Fabry–Pérot Microcavity. J Phys Chem B 2020; 124:5709-5716. [DOI: 10.1021/acs.jpcb.0c03815] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Wassie Mersha Takele
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Institute of Physical and Theoretical Chemistry and LISA+, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Frank Wackenhut
- Institute of Physical and Theoretical Chemistry and LISA+, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Lukasz Piatkowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
| | - Alfred J. Meixner
- Institute of Physical and Theoretical Chemistry and LISA+, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Jacek Waluk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Faculty of Mathematics and Science, Cardinal Stefan Wyszyński University, Dewajtis 5, 01-815 Warsaw, Poland
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12
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Park J, Thomasson JA, Gale CC, Sword GA, Lee KM, Herrman TJ, Suh CPC. Adsorbent-SERS Technique for Determination of Plant VOCs from Live Cotton Plants and Dried Teas. ACS OMEGA 2020; 5:2779-2790. [PMID: 32095701 PMCID: PMC7033990 DOI: 10.1021/acsomega.9b03500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 01/29/2020] [Indexed: 05/08/2023]
Abstract
We developed a novel substrate for the collection of volatile organic compounds (VOCs) emitted from either living or dried plant material to be analyzed by surface-enhanced Raman spectroscopy (SERS). We demonstrated that this substrate can be utilized to differentiate emissions from blends of three teas, and to differentiate emissions from healthy cotton plants versus caterpillar-infested cotton plants. The substrate we developed can adsorb VOCs in static headspace sampling environments, and VOCs naturally evaporated from three standards were successfully identified by our SERS substrate, showing its ability to differentiate three VOCs and to detect quantitative differences according to collection times. In addition, volatile profiles from plant materials that were either qualitatively different among three teas or quantitatively different in abundance between healthy and infested cotton plants were confirmed by collections on Super-Q resin for dynamic headspace and solid-phase microextraction for static headspace sampling, respectively, followed by gas chromatography to mass spectrometry. Our results indicate that both qualitative and quantitative differences can also be detected by our SERS substrate although we find that the detection of quantitative differences could be improved.
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Affiliation(s)
- Jinhyuk Park
- Department
of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States
- E-mail: . Tel: +1-979-224-7055
| | - J. Alex Thomasson
- Department
of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Cody C. Gale
- Department
of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States
| | - Gregory A. Sword
- Department
of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States
| | - Kyung-Min Lee
- Office
of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States
| | - Timothy J. Herrman
- Office
of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States
| | - Charles P.-C. Suh
- Insect
Control and Cotton Disease Research Unit, USDA, ARS, 2771 F&B
Road, College Station, Texas 77845, United States
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13
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DFT, spectroscopic, DSC/TGA, electronic, biological and molecular docking investigation of 2,5-thiophenedicarboxylic acid: A promising anticancer agent. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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14
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Park J, Thomasson JA, Fernando S, Lee KM, Herrman TJ. Complexes Formed by Hydrophobic Interaction between Ag-Nanospheres and Adsorbents for the Detection of Methyl Salicylate VOC. NANOMATERIALS 2019; 9:nano9111621. [PMID: 31731662 PMCID: PMC6915383 DOI: 10.3390/nano9111621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/01/2019] [Accepted: 11/12/2019] [Indexed: 11/17/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been widely investigated in many applications. However, only little work has been done on using SERS for the detection of volatile organic compounds (VOCs), primarily due to the challenges associated with fabricating SERS substrates with sufficient hotspots for signal enhancement and with the surface interfacially compatible for the VOCs. This study investigated the phase transfer of Ag-nanospheres (AgNSs) from the aqueous phase to the non-aqueous phase by electrostatic interaction induced by cationic surfactants, and the feasibility of the transferred AgNSs as SERS substrates for the determination of methyl salicylate VOC. Results indicated that one of three cationic surfactants, tetraoctylammonium bromide (TOAB) dissolved in organic solvent showed successful phase transfer of the AgNSs confirmed by several characterization analyses. The complex formed by hydrophobic interaction between the transferred AgNSs and Tenax-TA adsorbent polymer was able to be utilized as a SERS substrate, and the volatile of methyl salicylate could be easily determined from SERS measurements at 4 h static volatile collection. Therefore, the proposed new techniques can be effectively employed to areas where many VOCs relevant to food and agriculture need to be analyzed.
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Affiliation(s)
- Jinhyuk Park
- Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77843, USA; (J.A.T.); (S.F.)
- Correspondence: ; Tel.: +1-979-224-7055
| | - J. Alex Thomasson
- Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77843, USA; (J.A.T.); (S.F.)
| | - Sandun Fernando
- Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77843, USA; (J.A.T.); (S.F.)
| | - Kyung-Min Lee
- Office of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, TX 77841, USA; (K.-M.L.); (T.J.H.)
| | - Timothy J. Herrman
- Office of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, TX 77841, USA; (K.-M.L.); (T.J.H.)
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15
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Liu J, Qi X, Zhang S, Sun C, Zhu J, Cui J, Li X. Backscattering Raman spectroscopy using multi-grating spatial heterodyne Raman spectrometer. APPLIED OPTICS 2018; 57:9735-9745. [PMID: 30462004 DOI: 10.1364/ao.57.009735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/26/2018] [Indexed: 06/09/2023]
Abstract
Spatial heterodyne Raman spectrometry (SHRS) is a spectral analysis technique used to study material structures and compositions. We propose a multi-grating SHRS system that uses a multi-grating module rather than the single grating used to terminate each arm in traditional spatial heterodyne spectrometry (SHS). The proposed system not only retains the advantages of traditional SHS but also resolves the mutual limitation between system spectral range and resolution. The increased spectral range and resolution that can be achieved in detection are dependent on the number of sub-gratings used in the module. A verification system was built using 130 gr/mm and 150 gr/mm sub-gratings and calibrated. Under different experimental conditions (including laser power, integration time, container material and thickness, pure and mixed samples, and standoff experiments), the backscattered Raman spectra of different types of targets (including organic solutions, inorganic powders, and minerals) were tested. The multi-grating SHRS shows good performance for broad spectral range and high-resolution Raman detection.
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16
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Molecular structure, vibrational spectra, NMR, UV, NBO, NLO, HOMO-LUMO and molecular docking of 2-(4, 6-dimethyl-1-benzofuran-3-yl) acetic acid (2DBAA): Experimental and theoretical approach. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.05.109] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Structural and spectroscopic characterization, reactivity study and charge transfer analysis of the newly synthetized 2-(6-hydroxy-1-benzofuran-3-yl) acetic acid. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.081] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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18
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Li Y, Li Q, Wang Y, Oh J, Jin S, Park Y, Zhou T, Zhao B, Ruan W, Jung YM. A reagent-assisted method in SERS detection of methyl salicylate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 195:172-175. [PMID: 29414575 DOI: 10.1016/j.saa.2018.01.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/12/2018] [Accepted: 01/27/2018] [Indexed: 05/24/2023]
Abstract
With the explosive application of methyl salicylate (MS) molecules in food and cosmetics, the further detection of MS molecules becomes particularly important. Here we investigated the detection of MS molecules based on surface-enhanced Raman scattering (SERS) in a novel molecule/assistant/metal system constructed with MS, 4,4'-(hexafluoroisopropylidene) bis (benzoic acid) and Ag nanoparticles (AgNPs). The minimum detection concentration is 10-4 M. To explore the function of assisted reagent, we also referred another system without assistant molecules. The result demonstrates that SERS signals were not acquired, which proves that the assistant molecules are critical for the capture of MS molecules. Two possible mechanisms of MS/assistant/AgNPs system were speculated through two patterns of hydrogen bonds. The linker molecules acted as the role of the bridge between metallic substrates and target molecules through the molecular recognition. This strategy is very beneficial to the expanding of MS detection techniques and other hydrogen bond based coupling detections with SERS.
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Affiliation(s)
- Yali Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, PR China
| | - Qianwen Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, PR China
| | - Yanan Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, PR China
| | - Joohee Oh
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Sila Jin
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Yeonju Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Tieli Zhou
- College of Food Science and Engineering, Changchun University, Changchun 130012, PR China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, PR China
| | - Weidong Ruan
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, PR China.
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Republic of Korea.
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19
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Sureshkumar B, Sheena Mary Y, Panicker CY, Resmi K, Suma S, Armaković S, Armaković SJ, Van Alsenoy C. Spectroscopic analysis of 8-hydroxyquinoline-5-sulphonic acid and investigation of its reactive properties by DFT and molecular dynamics simulations. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.09.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Benzon K, Mary YS, Varghese HT, Panicker CY, Armaković S, Armaković SJ, Pradhan K, Nanda AK, Van Alsenoy C. Spectroscopic, DFT, molecular dynamics and molecular docking study of 1-butyl-2-(4-hydroxyphenyl)-4,5-dimethyl-imidazole 3-oxide. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.100] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Benzon K, Sheena MY, Panicker CY, Armaković S, Armaković SJ, Pradhan K, Nanda AK, Van Alsenoy C. Studies on the synthesis, spectroscopic analysis, molecular docking and DFT calculations on 1-hydroxy-2-(4-hydroxyphenyl)-4,5-dimethyl-imidazol 3-oxide. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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22
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Kondratenko Y, Kochina T, Fundamensky V, Ignatyev I, Panikorovskii T, Nyanikova G. Triethanolammonium salicylate — Protic alkanolammonium ionic liquid. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.06.085] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Probing the adsorption and orientation of 2,3-dichloro-5,8-dimethoxy-1,4-naphthoquinone on gold nano-rods: A SERS and XPS study. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Benzon KB, Varghese HT, Panicker CY, Pradhan K, Tiwary BK, Nanda AK, Van Alsenoy C. Spectroscopic investigation (FT-IR and FT-Raman), vibrational assignments, HOMO-LUMO, NBO, MEP analysis and molecular docking study of 2-(4-hydroxyphenyl)-4,5-dimethyl-1H-imidazole 3-oxide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 146:307-322. [PMID: 25819320 DOI: 10.1016/j.saa.2015.03.063] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 01/25/2015] [Accepted: 03/05/2015] [Indexed: 06/04/2023]
Abstract
In this work, the vibrational spectral analysis was carried out using FT-IR and FT-Raman spectroscopy of 2-(4-hydroxyphenyl)-4,5-dimethyl-1H-imidazole 3-oxide. The computations were performed at DFT levels of theory to get the optimized geometry and vibrational frequencies of the normal modes of the title compound using Gaussian09 software. The complete vibrational assignments of frequencies were made on the basis of potential energy distribution. The calculated HOMO and LUMO energies show the chemical activity of the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The hyperpolarizability values are reported and the first hyperpolarizability of the title compound is 19.61 times that of standard NLO material urea. From the MEP plot, the negative charge covers the nitro group and the positive region is over the hydroxyl group and N-H part of the imidazole ring. The calculated (1)H NMR results are in good agreement with experimental data. Molecular docking study is also reported.
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Affiliation(s)
- K B Benzon
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | | | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India
| | - Kiran Pradhan
- Department of Chemistry, University of North Bengal, Siliguri, West Bengal, India
| | - Bipransh Kumar Tiwary
- Department of Biotechnology, University of North Bengal, Siliguri, West Bengal, India
| | - Ashis Kumar Nanda
- Department of Chemistry, University of North Bengal, Siliguri, West Bengal, India
| | - C Van Alsenoy
- Department of Chemistry, University of Antwerp, B2610 Antwerp, Belgium
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25
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Mary YS, Panicker CY, Kavitha CN, Yathirajan HS, Siddegowda MS, Cruz SMA, Nogueira HIS, Al-Saadi AA, Van Alsenoy C, War JA. Spectroscopic investigation (FT-IR, FT-Raman and SERS), vibrational assignments, HOMO-LUMO analysis and molecular docking study of Opipramol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:547-559. [PMID: 25240828 DOI: 10.1016/j.saa.2014.08.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 08/10/2014] [Accepted: 08/24/2014] [Indexed: 06/03/2023]
Abstract
FT-IR and FT-Raman spectra of Opipramol were recorded and analyzed. SERS spectrum was recorded in silver colloid. The vibrational wave numbers were computed using DFT quantum chemical calculations. The data obtained from wave number calculations are used to assign vibrational bands obtained in infrared and Raman spectra as well as in SERS of the studied molecule. Potential energy distribution was done using GAR2PED program. The geometrical parameters (DFT) of the title compound are in agreement with the XRD results. The presence of CH2 stretching modes in the SERS spectrum indicates the close of piperazine ring with the metal surface and the interaction of the silver surface with this moiety. NBO analysis, HOMO-LUMO, first hyperpolarizability and molecular electrostatic potential results are also reported. The inhibitor Opipramol forms a stable complex with P4502C9 as is evident from the ligand-receptor interactions and a -9.0 kcal/mol docking score and may be an effective P4502C9 inhibitor if further biological explorations are carried out.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | - C N Kavitha
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore 570 006, India
| | - H S Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore 570 006, India
| | | | - Sandra M A Cruz
- Department of Chemistry, CICECO and TEMA-NRD, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Helena I S Nogueira
- Department of Chemistry, CICECO and TEMA-NRD, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Christian Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
| | - Javeed Ahmad War
- INSPIRE Fellow, Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
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26
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Sebastian S, Sylvestre S, Jayabharathi J, Ayyapan S, Amalanathan M, Oudayakumar K, Herman IA. Study on conformational stability, molecular structure, vibrational spectra, NBO, TD-DFT, HOMO and LUMO analysis of 3,5-dinitrosalicylic acid by DFT techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:1107-1118. [PMID: 25459508 DOI: 10.1016/j.saa.2014.09.135] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 09/25/2014] [Accepted: 09/30/2014] [Indexed: 06/04/2023]
Abstract
In this work we analyzed the vibrational spectra of 3,5-dinitrosalicylic acid (3,5DNSA) molecule. The total energy of eight possible conformers can be calculated by Density Functional Theory with 6-31G(d,p) as basis set to find the most stable conformer. Computational result identify the most stable conformer of 3,5DNSA is C6. The assignments of the vibrational spectra have been carried out by computing Total Energy Distribution (TED). The molecular geometry, second order perturbation energies and Electron Density (ED) transfer from filled lone pairs of Lewis base to unfilled Lewis acid sites for 3,5-DNSA molecular analyzed on the basis of Natural Bond Orbital (NBO) analysis. The formation of inter and intramolecular hydrogen bonding between OH and COOH group gave the evidence for the formation of dimer formation for 3,5-DNSA molecule. The energy and oscillator strength calculated by Time-Dependent Density Functional Theory (TD-DFT) complements with the experimental findings. The simulated spectra satisfactorily coincides with the experimental spectra.
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Affiliation(s)
- S Sebastian
- Department of Physics (Science and Humanities), Sri Manakula Vinayagar Engg. College, Madagadipet, Puducherry 605 107, India.
| | - S Sylvestre
- Department of Chemistry, DMI-St. Eugene University, Chipata 511 026, Zambia
| | - J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalai Nagar, Tamil Nadu 608002, India
| | - S Ayyapan
- Government College of Technology, Coimbatore 641 013, India
| | - M Amalanathan
- Department of Physics Annai Velankanni College, Tholayavattam 629157, Tamil Nadu, India
| | - K Oudayakumar
- Department of Physics (Science and Humanities), Sri Manakula Vinayagar Engg. College, Madagadipet, Puducherry 605 107, India
| | - Ignatius A Herman
- Department of Basic Studies, DMI-St. Eugene University, Chipata 511 026, Zambia
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27
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Bi X, Fan T, Zhang H. Novel morphology-controlled hierarchical core@shell structural organo-layered double hydroxides magnetic nanovehicles for drug release. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20498-20509. [PMID: 25340738 DOI: 10.1021/am506113s] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Novel hierarchical core@shell structured salicylate (SA) intercalated ZnAl-LDH (layered double hydroxides) magnetic nanovehicles were obtained via a special double-drop coprecipitation strategy assembling organo-ZnAl-LDH nanocrystals onto the surface of Fe3O4 submicrospheres (∼480 nm) from cheap aspirin and Zn- and Al-nitrates in alkaline solutions. The obtained Fe3O4@SA-LDH-r nanovehicles exhibit varied morphologies with hexagonal LDH ab-face horizontal, vertical, and vertical/slant/horizontal to the surfaces of Fe3O4 upon proper mass ratio (r) of Zn-salt to Fe3O4 from 1.93 to 7.71 in a low supersaturation system and possess moderate drug loadings and strong superparamagnetism. An in vitro release study reveals that under "no MF" mode (without external magnetic field) the SA release exhibits the higher accumulated release amount and smaller half-life (t0.5) for Fe3O4@SA-LDH-3.85 (41.2%, 1.63 min) and Fe3O4@SA-LDH-7.71 (51.1%, 1.66 min) probably owing to their mainly vertical LDH orientations, while the dramatically reduced SA release (10.0%) and greatly elongated t0.5 (25.6 min) for Fe3O4@SA-LDH-1.93 may be due to its relatively stronger host-guest interaction and compact horizontally oriented LDH shell stack. Under "MF on" mode, all the magnetic samples show a detectable reduced SA release owing to the particle-particle interactions among the magnetic nanovehicles. The kinetic fittings show that the release processes of all the samples involve the bulk and surface diffusion. The SA release from Fe3O4@SA-LDH-1.93 is mainly determined by the interparticle diffusion among the horizontally oriented LDH shell nanocrystals while those of Fe3O4@SA-LDH-3.85 and Fe3O4@SA-LDH-7.71 mainly involve the interlayer intraparticle diffusion between LDHs layers due to their largely vertical LDH shell nanocrystals.
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Affiliation(s)
- Xue Bi
- The State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , P.O. Box 98, Beijing 100029, China
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28
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Zseltvay II, Meshkova SB, Novikova NS, Kondrat’eva RV, Nedostup VI, Doga PG, Skripinets YV, Zhikhareva EA. Preparation and luminescent properties of coordination polymers of terbium and europium with 1,4-bis-(4-methoxycarbonyl-3-hydroxyphenoxycarbonyl)butane. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363214100223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Qu P, Tian D. TDDFT study on intramolecular hydrogen bond of photoexcited methyl salicylate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 120:529-533. [PMID: 24374479 DOI: 10.1016/j.saa.2013.11.112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 11/01/2013] [Accepted: 11/26/2013] [Indexed: 06/03/2023]
Abstract
The equilibrium geometries, IR-spectra and transition mechanism of intramolecular hydrogen-bonded methyl salicylate in excited state were studied using DFT and TDDFT with 6-31++G (d, p) basis set. The length of hydrogen bond OH⋯OC is decreased from 1.73 Å in the ground state to 1.41 and 1.69 Å in the excited S1 and S3 states. The increase of bond length for HO and CO group also indicates that in excited state the hydrogen bond OH⋯OC is strengthened. IR spectra show HO and CO stretching bands are strongly redshifted by 1387 and 67 cm(-1) in the excited S1 and S3 states comparing to the ground state. The excitation energy and the absorption spectrum show the S3 state is the main excited state of the low-lying excited states. By analyzing the frontier molecular orbitals, the transition from the ground state to the excited S1 and S3 states was predicted to be the π→π∗ mode.
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Affiliation(s)
- Peng Qu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Dongxu Tian
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
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30
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Electrochemical performances and interfacial properties of graphite electrodes with ionic liquid and alkyl-carbonate hybrid electrolytes. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.10.118] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Ulahannan RT, Panicker CY, Varghese HT, Van Alsenoy C, Musiol R, Jampilek J, Anto PL. Vibrational spectroscopic, 1H NMR and quantum chemical computational study of 4-hydroxy-2-oxo-1,2-dihydroquinoline-8-carboxylic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 121:445-456. [PMID: 24287054 DOI: 10.1016/j.saa.2013.10.113] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 10/22/2013] [Accepted: 10/31/2013] [Indexed: 06/02/2023]
Abstract
FT-IR, FT-Raman and (1)H NMR spectra of 4-hydroxy-2-oxo-1,2-dihydroquinoline-8-carboxylic acid were recorded and obtained data were confronted with the computed using Gaussian09 software package. DFT/B3LYP, B3PW91 calculations have been done using 6-31G* and SDD basis sets, to investigate the vibrational frequencies and geometrical parameters. The assignments of the normal modes are done by potential energy distribution (PED) calculations. The calculated first hyperpolarizability is comparable with the reported values of similar quinoline derivatives and is an attractive object for future studies of non-linear optics. The stability of the molecule arising from hyperconjugative interaction and charge delocalization has been analyzed using NBO analysis. MEP predicts the most reactive part in the molecule. The calculated (1)H NMR results are in good agreement with experimental data.
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Affiliation(s)
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - C Van Alsenoy
- Department of Chemistry, University of Antwerp, B2610 Antwerp, Belgium
| | - Robert Musiol
- Institute of Chemistry, University of Silesia, Szkolna 9, 40007 Katowice, Poland
| | - Josef Jampilek
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1/3, 61242 Brno, Czech Republic
| | - P L Anto
- Department of Physics, Christ College, Irinjalakkuda, Thrissur, Kerala, India
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32
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Mary YS, Jojo PJ, Van Alsenoy C, Kaur M, Siddegowda MS, Yathirajan HS, Nogueira HIS, Cruz SMA. Vibrational spectroscopic (FT-IR, FT-Raman, SERS) and quantum chemical calculations of 3-(10,10-dimethyl-anthracen-9-ylidene)-N,N,N-trimethylpropanaminiium chloride (Melitracenium chloride). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 120:370-380. [PMID: 24200651 DOI: 10.1016/j.saa.2013.10.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 09/29/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
FT-IR, FT-Raman spectra of Melitracenium chloride were recorded and analyzed. SERS spectrum was recorded in silver colloid. The vibrational wavenumbers were computed using DFT quantum chemical calculations. The data obtained from wavenumber calculations are used to assign vibrational bands obtained in infrared and Raman spectra as well as in SERS of the studied molecule. Potential energy distribution was done using GAR2PED program. The geometrical parameters (SDD) of the title compound are in agreement with the XRD results. The presence anthracene ring modes in the SERS spectrum suggest a tilted orientation with respect to the metal surface. The methyl groups in the title molecule are also close to the metal surface. The first hyperpolarizability, NBO analysis and molecular electrostatic potential results are also reported.
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Affiliation(s)
- Y Shyma Mary
- Department of Physics, Bharathiar University, Coimbatore, Tamilnadu, India; Department Physics, Fatima Mata National College, Kollam, Kerala, India.
| | - P J Jojo
- Department Physics, Fatima Mata National College, Kollam, Kerala, India
| | | | - Manpreet Kaur
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - M S Siddegowda
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - H S Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - Helena I S Nogueira
- Chemistry Department, CICECO and TEMA-NRD, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sandra M A Cruz
- Chemistry Department, CICECO and TEMA-NRD, University of Aveiro, 3810-193 Aveiro, Portugal
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33
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Mary YS, Jojo PJ, Van Alsenoy C, Kaur M, Siddegowda MS, Yathirajan HS, Nogueira HIS, Cruz SMA. Vibrational spectroscopic studies (FT-IR, FT-Raman, SERS) and quantum chemical calculations on cyclobenzaprinium salicylate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 120:340-350. [PMID: 24200648 DOI: 10.1016/j.saa.2013.10.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 09/29/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
FT-IR, FT-Raman and surface enhanced Raman scattering spectra of cyclobenzaprinium salicylate were recorded and analyzed. The vibrational wavenumbers were examined theoretically using the Gaussian09 set of quantum chemistry codes, and the normal modes were assigned by potential energy distribution calculations. The downshift of the OH stretching frequency is due to strong hydrogen bonded system present in the title compound as given by XRD results. The presence of CH3, CH2 and CO2 modes in the SERS spectrum indicates the nearness of the methyl group to the metal surface which affects the orientation and metal molecule interaction. The presence of phenyl ring modes in the SERS spectrum indicates a tilted orientation with respect to the metal surface. The geometrical parameters of the title compound are in agreement with XRD results. A computation of the first hyperpolarizability indicates that the compound may be a good candidate as a NLO material.
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Affiliation(s)
- Y Shyma Mary
- Department of Physics, Bharathiar University, Coimbatore, Tamilnadu, India; Department Physics, Fatima Mata National College, Kollam, Kerala, India.
| | - P J Jojo
- Department Physics, Fatima Mata National College, Kollam, Kerala, India
| | | | - Manpreet Kaur
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - M S Siddegowda
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - H S Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - Helena I S Nogueira
- Chemistry Department, CICECO and TEMA-NRD, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sandra M A Cruz
- Chemistry Department, CICECO and TEMA-NRD, University of Aveiro, 3810-193 Aveiro, Portugal
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34
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Portella FF, Santos PD, Lima GB, Leitune VCB, Petzhold CL, Collares FM, Samuel SMW. Synthesis and characterization of a glycerol salicylate resin for bioactive root canal sealers. Int Endod J 2013; 47:339-45. [DOI: 10.1111/iej.12149] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 06/04/2013] [Indexed: 01/09/2023]
Affiliation(s)
- F. F. Portella
- Dental Materials Laboratory; School of Dentistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - P. D. Santos
- Dental Materials Laboratory; School of Dentistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - G. B. Lima
- Institute of Chemistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - V. C. B. Leitune
- Dental Materials Laboratory; School of Dentistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - C. L. Petzhold
- Institute of Chemistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - F. M. Collares
- Dental Materials Laboratory; School of Dentistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - S. M. W. Samuel
- Dental Materials Laboratory; School of Dentistry; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
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35
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Bruno FP, Caira MR, Martin EC, Monti GA, Sperandeo NR. Characterization and structural analysis of the potent antiparasitic and antiviral agent tizoxanide. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Baraldi C, Freguglia G, Tinti A, Sparta M, Alexandrova AN, Gamberini MC. IR, Raman and SERS spectra of propantheline bromide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 103:1-10. [PMID: 23228825 DOI: 10.1016/j.saa.2012.10.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 08/06/2012] [Accepted: 10/27/2012] [Indexed: 06/01/2023]
Abstract
The two known propantheline bromide polymorphs (form I and form II) were studied and characterized by a multianalytical approach. In the present work, the identification of propantheline bromide polymorphic forms through vibrational IR spectroscopies are presented and for the first time Raman microscopy and hot stage Raman microscopy (HSRM) studies are reported. Finally, quantum mechanical calculations were performed. For assisting the assignment of the experimental picks, the two IR spectra of the most and least stable representatives of a set of 56 conformers are calculated and studied. DSC thermograms data, are also reported. The surface enhanced Raman scattering (SERS) spectrum was also recorded in a silver colloid; it could be inferred that propantheline bromide is adsorbed on silver colloid through the oxygen atom with the molecular plane perpendicular to the metal surface.
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Affiliation(s)
- C Baraldi
- Department of Pharmaceutical Sciences, Institute of Pharmacy, University of Modena and Reggio Emilia, via Campi n. 183, 41100 Modena, Italy
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37
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Mary YS, Raju K, Yildiz I, Temiz-Arpaci O, Nogueira HIS, Granadeiro CM, Van Alsenoy C. FT-IR, FT-Raman, SERS and computational study of 5-ethylsulphonyl-2-(o-chlorobenzyl)benzoxazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:617-25. [PMID: 22868334 DOI: 10.1016/j.saa.2012.07.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 06/10/2012] [Accepted: 07/05/2012] [Indexed: 05/25/2023]
Abstract
FT-IR, FT-Raman and surface-enhanced Raman scattering spectra of 5-ethylsulphonyl-2-(o-chlorobenzyl)benzoxazole were recorded and analyzed. The vibrational wavenumbers were examined theoretically using the Gaussian09 set of quantum chemistry codes, and the normal modes were assigned by potential energy distribution calculations. The presence of CH(2), SO(2) and CH(3) modes in the SERS spectrum indicates the nearness of the methyl group to the metal surface which affects the orientation and metal molecule interaction. The synthesis, NMR spectra and antibacterial properties are reported. The title compound shows more inhibitory effect against Pseudomonas aeruginosa than ampicillin and found to be more potent against Klebsiella pneumoniae and drug-resistant Bacillus subtilis than the other microorganisms. A computation of the first hyperpolarizability indicates that the compound may be a good candidate as a NLO material. The RMS errors of the observed Raman and IR bands are found to be 30.93, 29.77 for HF and 9.57, 6.75 for DFT methods, respectively.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India.
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Wang C, Han W, Tang X, Zhang H. Evaluation of drug release profile from patches based on styrene-isoprene-styrene block copolymer: the effect of block structure and plasticizer. AAPS PharmSciTech 2012; 13:556-67. [PMID: 22476973 DOI: 10.1208/s12249-012-9778-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Accepted: 03/21/2012] [Indexed: 11/30/2022] Open
Abstract
We prepared pressure-sensitive adhesive (PSA) patches based on styrene-isoprene-styrene (SIS) thermoplastic elastomer using hot-melt coating method. The liquid paraffine is added in the PSA matrices as a plasticizer to moderate the PSA properties. Three drugs, methyl salicylate, capsaicin, and diphenhydramine hydrochloride are selected as model drugs. The Fourier transform infrared spectroscopy, differential scanning calorimetry test, and wide-angle X-ray diffraction test indicate a good compatibility between drugs and matrices. Peppas equation is used to describe drug release profile. Different drug-matrix absorption, as indicative of drug-matrix interaction, accounts for the variation in release profiles of different drugs. Furthermore, atomic force microscopy and rheological studies of the PSA samples are performed to investigate the effect of SIS structure and plasticizer of PSA on drug release behaviors. For methyl salicylate and capsaicin, drug diffusion in the PSA matrices is the main factor controlled by the release kinetic constant k. The high [SI] diblock content and high plasticizer amount in matrix provide the PSA with a homogeneous and soften microstructure, resulting in a high diffusion rate. But for water-soluble drugs such as diphenhydramine hydrochloride, the release rate is governed by water penetration with the competition from diffusion mechanisms.
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DFT calculations of 2,4,6-trinitrophenylbenzoate derivatives: Structure, ground state properties and spectral properties. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.09.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Güneş E, Parlak C. DFT, FT-Raman and FT-IR investigations of 5-methoxysalicylic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 82:504-512. [PMID: 21840249 DOI: 10.1016/j.saa.2011.07.089] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 07/25/2011] [Accepted: 07/26/2011] [Indexed: 05/31/2023]
Abstract
FT-IR and FT-Raman spectra of 5-methoxysalicylic acid (5MeOSA) have been experimentally reported in the region of 4000-10 cm(-1) and 4000-50 cm(-1), respectively. The optimized geometric parameters, conformational equilibria, normal mode frequencies and corresponding vibrational assignments of 5MeOSA (C(8)H(8)O(4)) are theoretically examined by means of B3LYP hybrid density functional theory (DFT) method together with 6-31++G(d,p) basis set. Furthermore, reliable vibrational assignments have made on the basis of potential energy distribution (PED) calculated and the thermodynamics functions, highest occupied and lowest unoccupied molecular orbitals (HOMO and LUMO) of 5MeOSA have been predicted. Calculations are employed for different conformations of 5MeOSA, both in gas phase and in solution. Solvent effects are investigated using chloroform and dimethylsulfoxide. All results indicate that B3LYP method is able to provide satisfactory results for predicting vibrational frequencies and the structural parameters, vibrational frequencies and assignments, IR and Raman intensities of 5MeOSA are solvent dependent.
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Affiliation(s)
- Esma Güneş
- Department of Physics, Dumlupınar University, 43100 Kütahya, Turkey
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Xuan X, Zhai C. Quantum chemical studies of FT-IR and Raman spectra of methyl 2,5-dichlorobenzoate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:1663-1668. [PMID: 21664860 DOI: 10.1016/j.saa.2011.05.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 05/07/2011] [Accepted: 05/16/2011] [Indexed: 05/30/2023]
Abstract
In this paper, experimental and theoretical studies on the molecular structure and vibrational spectra of methyl 2,5-dichlorobenzoate (MDCB) are presented. Fourier transform infrared and Raman spectra of the title molecule in the solid phase were recorded and analyzed. The geometrical parameters were calculated using DFT (B3LYP) with 6-311G(d,p) and 6-311++G(d,p) basis sets, and compared with the experimental data. The vibrational frequencies, infrared intensities and Raman scattering activities were also reported. The detailed assignments were given based on the total energy distribution of the vibrational modes, calculated with scaled quantum mechanics method. The observed and calculated frequencies are found to be in good agreement.
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Affiliation(s)
- Xiaopeng Xuan
- School of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, China.
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Gao J, Gu H, Liu F, Dong X, Xie M, Hu Y. Effect of concentration and pH on the surface-enhanced Raman scattering of captopril on nano-colloidal silver surface. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.05.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Aparicio S, Alcalde R. On the Structure of Liquid Methyl Salicylate: the Role of Intramolecular Hydrogen Bonding. ACTA ACUST UNITED AC 2010. [DOI: 10.5155/eurjchem.1.3.162-167.23] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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New Binuclear Complexes with Mixed Ligands and μ2-Phenol Oxygen Bridges: Synthesis Crystal Structures and Magnetism. J Inorg Organomet Polym Mater 2009. [DOI: 10.1007/s10904-009-9314-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Massaro RD, Dai Y, Blaisten-Barojas E. Energetics and Vibrational Analysis of Methyl Salicylate Isomers. J Phys Chem A 2009; 113:10385-90. [DOI: 10.1021/jp905887m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Richard D. Massaro
- Computational Materials Science Center and Department of Computational and Data Sciences, George Mason University, Fairfax, Virginia 22030
| | - Yafei Dai
- Computational Materials Science Center and Department of Computational and Data Sciences, George Mason University, Fairfax, Virginia 22030
| | - Estela Blaisten-Barojas
- Computational Materials Science Center and Department of Computational and Data Sciences, George Mason University, Fairfax, Virginia 22030
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Liu R, Tang W, Kang Y, Si M. Studies on best dose of X-ray for Hep-2 cells by using FTIR, UV-vis absorption spectroscopy and flow cytometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 73:601-607. [PMID: 19380250 DOI: 10.1016/j.saa.2009.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2008] [Revised: 02/28/2009] [Accepted: 03/16/2009] [Indexed: 05/27/2023]
Abstract
We report here the use of Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible (UV-vis) absorption spectroscopy, and flow cytometry (FCM) to analysis the best dose of X-ray for human laryngeal squamous cell carcinoma cell lines (Hep-2). Our analysis indicates specific FTIR and UV-vis spectral differences between X-irradiated and normal Hep-2 cells. In addition, striking spectral differences are seen in FTIR spectra in the ratios at 2925/2958 and 1654/1542 cm(-1). These two ratios of the X-irradiated cells for 8 Gy dose group with value of 1.07+/-0.025 and 1.184+/-0.013, respectively, were more notable (mean+/-S.D., n=5, P<0.05) compared with that of the cells for the controls. UV-vis absorption spectra analysis shows X-ray irradiation disturbed the metabolism of phenylalanine and tyrosine intracellular, maybe, which was caused by cell cycle arrest. Spectroscopy analysis suggests 8 Gy is a better dose of X-ray for lowering the canceration degree of Hep-2 cells. Moreover, FCM analysis shows the apoptosis of X-irradiated cells depended on the radiation dose to some extent, but it was not linear. The total apoptosis ratio with value of (20.793+/-1.133)% (P<0.01, n=5) for the 12 Gy dose group was the maximum, however, the maximum apoptosis ratio per Gray (total apoptosis ratio/radiation dose) was the cells of the 2 Gy dose group with value of (4.887+/-0.211)% (P<0.05, n=5). Our data suggest that Hep-2 cells are given 2 Gy radiation of X-ray once a time, 8 Gy per week (accumulatively), the effect for lowering the canceration degree and restraining the proliferation of Hep-2 cells will be better.
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Affiliation(s)
- Renming Liu
- Department of Physics and Electronics Science, Chuxiong Normal University, Chuxiong 675000, China.
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Volatility-dependent 2D IR correlation analysis of traditional Chinese medicine ‘Red Flower Oil’ preparation from different manufacturers. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.09.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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