Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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Abstract A chemiluminescence (CL) assay on the basis of the tremendous enhancing effect of copper and nitrogen co-doped carbon dots (Cu,N-CDs) on the luminol–NaIO4 reaction was introduced for the determination of nanomolar levels of 4-nitrophenol (4-NP). Cu,N-CDs were synthesized by a hydrothermal approach and characterized by TEM, XRD, EDX, and FTIR analysis. The potential CL mechanism was elucidated by recording the CL spectrum and by evaluating the influence of reactive oxygen species. It was...
#1Leonid Mochalov (Nizhny Novgorod State Technical University)H-Index: 12
#2Dominik Dorosz (AGH University of Science and Technology)H-Index: 19
Last. Vladimir M. Vorotyntsev (Nizhny Novgorod State Technical University)H-Index: 13
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Abstract In-situ Optical Emission Spectroscopy (OES) combined with quantum chemical calculations was used as a powerful tool to find out the exited reactive species existing in plasma discharge during the process of lead sulfide chalcogenide materials deposition. Low temperature nonequilibrium RF (40.68 MHz) plasma at low pressure (0.1 Torr) was employed for initiation of chemical interaction between precursors in the gas phase. Only high-pure elements were utilized as the initial substances. Th...
#1Tengda Shi (China Jiliang University)
#2Pei Liang (China Jiliang University)H-Index: 23
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Abstract An ex situ method was used to synthesize noble metals and metal oxide composite materials, due to the selective adsorption properties of metal oxides, the adsorption of different probe molecules by this composite structure had been studied. In the ex situ approach, we use (3-aminopropyl) diethoxy methylsilane (ATES) as a coupling agent which is easy for noble metal nanoparticles deposited on metallic oxide nanomaterials. The Raman scattering (SERS) substrate of 1D MoO3 nanowires (MoO3-N...
#1Huanan Guan (Harbin University of Commerce)H-Index: 4
#2Yan Song (Harbin University of Commerce)H-Index: 2
Last. Na Zhang (Harbin University of Commerce)H-Index: 2
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Abstract Herein, Gold and magnetic particles (GoldMag), an enzyme mimetic of horseradish peroxidase (HRP), have been designed to construct a colorimetric sensor for cholesterol (Cho). The well-dispersed GoldMag was successfully prepared by green reduction using a self-assembly method based on the surface amino groups, and characterized by Fourier transform infrared (FTIR), X-Ray Photoelectron Spectroscopic (XPS) techniques. In the presence of H2O2, the resulting nanocomposites possessed enhanced...
#1Jiwen Hu (Linköping University)H-Index: 6
#2Xili Yu (SHU: Shanghai University)
Last. Zhangjun Hu (Linköping University)H-Index: 23
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Abstract A rhodamine B-based sensor (RS) was designed and synthesized by a combination of the spirolacton rhodamine B (fluorophore) and multidentate chelates (ionophore) with high affinity towards Hg2+. In the presence of Hg2+, the resulting red-orange fluorescence (under UV light) and naked eye red color of RS are supposed to be used for quantitative and qualitative measurement of Hg2+. Further fluorescent titration and analysis demonstrate that RS can selectively detect Hg2+ within 1 s with a ...
#1Ahran Kim (Seoul National University of Science and Technology)H-Index: 4
#2Hangyul Lee (Seoul National University of Science and Technology)H-Index: 1
Last. Cheal Kim (Seoul National University of Science and Technology)H-Index: 44
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Abstract A chemosensor DQ (2-(2-(quinolin-2-yl)hydrazinyl)-N-(quinolin-8-yl)acetamide), based on two quinoline moieties, has been synthesized. DQ could detect zinc ion through fluorescence turn-on in aqueous media. Limit of detection was calculated as 0.07 μM, far lower than the standard of WHO for zinc ion. The practicality of DQ was demonstrated via the successful results of reusability with EDTA, easy detection on the test strip, and precise quantification in real water samples. Additionally,...
#1Umar Ali Dar (National Institute of Technology, Srinagar)
#2Shakeel A. Shah (National Institute of Technology, Srinagar)H-Index: 3
#1R. Hinojosa-Nava (UNAM: National Autonomous University of Mexico)
#2E.V. Mejía-Uriarte (UNAM: National Autonomous University of Mexico)H-Index: 8
Last. R. Y. Sato-Berrú (UNAM: National Autonomous University of Mexico)H-Index: 7
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Abstract The structural change by temperature of the ammonia borane has been studied through Raman spectroscopy and principal components analysis (PCA). Its phase transition, from tetragonal to orthorhombic, was observed at 212 K. In addition, between 99 and 83 K, a zone of structural stability was observed. These behaviors could be observed thanks to the application of the PCA technique to the Raman data. Here, we can find a characteristic Raman signal which can also be associated with the orth...
Abstract In this work we have investigated influence of divalent Mn ions on the structure of dsDNA utilizing Fourier transform infrared spectroscopy on DNA thin films obtained from sodium and manganese salt DNA (Na-DNA and Mn-DNA) in manganese chloride solutions and manganese salt DNA in pure water. In the range of low Mn content, 0.0067 ≤ r = [manganese]/[phosphate] ≤ 0.5, the difference between vibrational spectrum of thin films Na-DNA and Mn-DNA is revealed. Former one is more influenced by a...
#1Hannah Tiernan (Imperial College London)H-Index: 1
#2Bernadette Byrne (Imperial College London)H-Index: 28
Last. Sergei G. Kazarian (Imperial College London)H-Index: 50
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Abstract Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) spectroscopy is a label-free, non-destructive technique that can be applied to a vast range of biological applications, from imaging cancer tissues and live cells, to determining protein content and secondary structure composition. This review summarises the recent advances in applications of ATR-FTIR spectroscopy to biopharmaceuticals, the application of this technique to biosimilars, and the current uses of FTIR spectro...
Top fields of study
Analytical chemistry
Inorganic chemistry
Raman spectroscopy