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Gotowa bibliografia na temat „Spectroscopie du lithium”

Autor: Grafiati

Data publikacji: 19 października 2024

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Artykuły w czasopismach na temat "Spectroscopie du lithium"

1

Hanquet, B., B. Tabyaoui, J. C. Caille, M. Farnier, and R. Guilard. "Synthèse stéréosélective de (±) boschnialactone, (±) 7-épiteucriumlactone et (±) 7-épiisoiridomyrmécine. Étude de la stéréochimie par spectroscopie de résonance magnétique nucléaire." Canadian Journal of Chemistry 68, no. 4 (1990): 620–27. http://dx.doi.org/10.1139/v90-095.

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The stereoselective syntheses of (±) boschnialactone 1, (±) 7-epiteucriumlactone 2, and (±) 7-epiisoiridomyrmecine 3 are described. Their preparation involved Stetter's reaction followed by nucleophilic addition of lithium enolates of suitable esters. Silylated reagents are used in the lactonisation step and the observed yields are between 63 and 78%. The proposed structural analysis is not in accord with the results of a previous study. The nuclear magnetic resonance data are determined using ID and 2D proton and carbon NMR experiments. Keywords: stereoselective synthesis, boschnialactone, 7-

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Seo, Ambrose, Andrew Meyer, Sujan Shrestha, Ming Wang, Xingcheng Xiao, and Yang-Tse Cheng. "Observation of the surface layer of lithium metal using in situ spectroscopy." Applied Physics Letters 120, no. 21 (2022): 211602. http://dx.doi.org/10.1063/5.0096546.

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We have investigated the surface of lithium metal using x-ray photoemission spectroscopy and optical spectroscopic ellipsometry. Even if we prepare the surface of lithium metal rigorously by chemical cleaning and mechanical polishing inside a glovebox, both spectroscopic investigations show the existence of a few tens of nanometer-thick surface layers, consisting of lithium oxides and lithium carbonates. When lithium metal is exposed to room air (∼50% moisture), in situ real-time monitoring of optical spectra indicates that the surface layer grows at a rate of approximately 24 nm/min, presumab

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3

Zhang, Li, Tao Qian, Xingyu Zhu, et al. "In situ optical spectroscopy characterization for optimal design of lithium–sulfur batteries." Chemical Society Reviews 48, no. 22 (2019): 5432–53. http://dx.doi.org/10.1039/c9cs00381a.

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Recent advances in optimal design of lithium–sulfur batteries with the aid of in situ optical spectroscopic techniques, including Raman, infrared and ultraviolet-visible spectroscopies, are systematically summarized.

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4

Meyer, Lydia, Collin Kinder, and Jason Morgan Porter. "Chemometric and Machine Learning Analysis of Lithium Concentration and Solvation Behavior in Li-Ion Battery Electrolytes." ECS Meeting Abstracts MA2022-02, no. 6 (2022): 618. http://dx.doi.org/10.1149/ma2022-026618mtgabs.

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The demand for batteries is rapidly growing across a range of technologies. The increasingly diverse use cases for batteries require various capabilities, particularly requirements for high energy densities, that are currently unmet by traditional Li-ion batteries. Electrolyte stability proves to be a bottleneck for battery advancement towards energy dense chemistries beyond Li-ion, including metal anodes. In situ spectroscopy tools, such as Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, and X-ray spectroscopy, have provided insight into critical molecular-level interactio

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5

Cai Jiahua, 才家华, 张保龙 Zhang Baolong, 耿春艳 Geng Chunyan, 郝思博 Hao Sibo, 陈赛 Chen Sai та 吴晓君 Wu Xiaojun. "铌酸锂强场太赫兹非线性时域光谱系统". Chinese Journal of Lasers 50, № 17 (2023): 1714012. http://dx.doi.org/10.3788/cjl230435.

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Muhammad, F. H., A. F. M. Fadzil, and Tan Winie. "FTIR and Electrical Studies of Hexanoyl Chitosan-Based Nanocomposite Polymer Electrolytes." Advanced Materials Research 1043 (October 2014): 36–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1043.36.

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Films of hexanoyl chitosan-based polymer electrolytes were prepared using solution casting technique. The interactions between hexanoyl chitosan-lithium perchlorate (LiClO4) and dimethyl carbonate (DMC)-lithium perchlorate (LiClO4) were investigated using Fourier transform infrared spectroscopy (FTIR). The FTIR results showed that there is a possible complexation between the electron donor of hexanoyl chitosan and DMC with lithium salt due to the shifting in the wavenumber and changes in the intensity of the infrared bands. The obtained spectroscopic data has been correlated with the conductiv

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Katime-Santrich, Orlando J., Bruno V. Castilho, Carlos A. O. Torres, and Germano R. Quast. "Photometric and spectroscopic analysis of the stellar association AB Doradus." Proceedings of the International Astronomical Union 5, S265 (2009): 370–71. http://dx.doi.org/10.1017/s1743921310000979.

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AbstractWe present the stellar parameters and lithium abundance for 23 stars of the young stellar association AB Doradus, determined by photometry and spectroscopy. The photometric data was obtained at OPD/LNA and/or from the literature and the spectroscopic data was obtained at La silla/ESO and at OPD/LNA. The parameters were determined using photometric calibrations, line ratios, curves of growth and spectral synthesis. Our results confirm that the selected stars are probably association members, showing an uniform metallicity and lithium depletion consistent with 50 Myears

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8

Fritzke, Jana Beatrice, Sunita Dey, Christopher A. O'Keefe, and Clare P. Grey. "NMR Spectroscopic Investigations of the Performance Limiting Mechanisms of Lithium-Sulfur Batteries." ECS Meeting Abstracts MA2023-02, no. 55 (2023): 2692. http://dx.doi.org/10.1149/ma2023-02552692mtgabs.

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During the past decades, the development of alternative energy sources has become increasingly important as the growing consumption of non-regenerative fossil energy poses a threat to the environment. Hence, developing of next-generation batteries featuring high capacity, reduced costs and improved safety, such as in lithium-sulfur batteries, is of utmost importance. The benefits of lithium-sulfur batteries have led to widespread efforts to understand the fundamentals of the sulfur redox chemistry that drives their operation, as capacity fade has been observed in almost all Li-S batteries.[1]

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9

Bezdomnikov, Alexey A., Liudmila I. Demina, Lyudmila G. Kuz’mina, Galina V. Kostikova, Valeriy I. Zhilov, and Aslan Yu Tsivadze. "Study of Lithium-Extraction Systems Based on Benzo-15-Crown-5 Ether and Alkylimidazolium-Based Ionic Liquid." Molecules 28, no. 3 (2023): 935. http://dx.doi.org/10.3390/molecules28030935.

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The extraction of lithium from aqueous solutions of LiNTf2 and LiCl salts using benzo-15-crown-5 ether (B15C5) as an extractant in [C8mim][NTf2] ionic liquid was studied. The transition of the extractant into the aqueous phase and the distribution of Cl− ions during lithium extraction from LiCl solutions were determined. LiNTf2 complexes with B15C5 with different LiNTf2:B15C5 ratios were isolated for the first time and characterized via X-ray diffraction and IR spectroscopy. Differences in the extraction process of LiCl and LiNTf2 were determined via an infrared spectroscopic study of the extr

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10

Jin, Yan, Lin Zhou, Jianyu Yu, et al. "In operando plasmonic monitoring of electrochemical evolution of lithium metal." Proceedings of the National Academy of Sciences 115, no. 44 (2018): 11168–73. http://dx.doi.org/10.1073/pnas.1808600115.

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The recent renaissance of lithium metal batteries as promising energy storage devices calls for in operando monitoring and control of electrochemical evolution of lithium metal morphologies. While the development of plasmonics has led to significant advancement in real-time and ultrasensitive chemical and biological sensing and surface-enhanced spectroscopies, alkali metals featured by ideal free electron gas models have long been regarded as promising plasmonic materials but seldom been explored due to their high chemical reactivity. Here, we demonstrate the in operando plasmonic monitoring o

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