Journal of Raman Spectroscopy最新文献_第7页

Unraveling Stacking Transitions in Twisted Bilayer Graphene: Insights From Intralayer and Interlayer Processes 解开扭曲双层石墨烯的堆叠转变：来自层内和层间工艺的见解

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-26 DOI: 10.1002/jrs.6735

M. Souibgui

引用次数: 0

Microstructural Study of the Coloring Variation of Chinese Sauce Glaze Replications 中国酱釉仿制品着色变化的显微结构研究

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-23 DOI: 10.1002/jrs.6736

Tian Wang, Senwei Xia, Zhao Ren, Clement Hole, Fen Wang, Jianfeng Zhu, Hongjie Luo, Qiang Li, Meihong Liao, Philippe Sciau

{"title":"Microstructural Study of the Coloring Variation of Chinese Sauce Glaze Replications","authors":"Tian Wang, Senwei Xia, Zhao Ren, Clement Hole, Fen Wang, Jianfeng Zhu, Hongjie Luo, Qiang Li, Meihong Liao, Philippe Sciau","doi":"10.1002/jrs.6736","DOIUrl":"https://doi.org/10.1002/jrs.6736","url":null,"abstract":"<div>\u0000 \u0000 Sauce glazed wares of Yaozhou kilns are famous for their high gloss and distinctive glaze color palette varying from yellowish-brown to reddish-brown. In this work, sauce glazes were successfully replicated using the traditional technology of Yaozhou kilns. Micro-Raman spectroscopy, combined with optical microscopy, scanning electron microscopy, x-ray fluorescence, and reflective spectroscopy, was systematically applied to analyze the chemical composition, nature and distribution of crystals, and the coloration of the glazes. The results show that the yellowish-brown glaze is mainly original from dendritic ε-Fe2O3 crystals, whereas the reddish-brown color is mainly derived from dendritic hematite crystals. Such dendritic structure could account for slightly color variations of the glaze surface observed in different angles, which also reported in Japanese Bizen ceramics. The principal component analysis (PCA) was further applied to study the Raman spectra of these iron oxides. The PCA results effectively indicates the structural disorders of these crystals introduced by ion substitutions. These substitutions could not only stabilize the crystals but also darken the crystals color. Besides, high Mg in the raw materials was found to benefit the growth of magnesioferrite crystals. The relative low level of Fe2O3, high level of SiO2, and CaO may relate to the formation of ε-Fe2O3 crystals.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"55 12","pages":"1255-1265"},"PeriodicalIF":2.4,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Beam-Generated Sample Evolution to Emphasize Spatial Inhomogeneities: The Example of HPO42−-Containing Amorphous Calcium Phosphate 光束生成的样品演化以强调空间不均匀性：以含HPO42−的无定形磷酸钙为例

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-19 DOI: 10.1002/jrs.6732

Sylvain Le Grill, Olivier Marsan, Christophe Drouet, Fabien Brouillet

{"title":"Beam-Generated Sample Evolution to Emphasize Spatial Inhomogeneities: The Example of HPO42−-Containing Amorphous Calcium Phosphate","authors":"Sylvain Le Grill, Olivier Marsan, Christophe Drouet, Fabien Brouillet","doi":"10.1002/jrs.6732","DOIUrl":"https://doi.org/10.1002/jrs.6732","url":null,"abstract":"Amorphous calcium phosphates (ACPs) represent a family of bioactive compounds particularly relevant to bone regeneration. However, due to their intrinsic metastability, their processing into 3D-shaped materials cannot be undergone by conventional sintering methods and requires cold sintering approaches. Also, their microstructure and local compositional changes still have to be explored in detail. To this aim, spectroscopy techniques are particularly appealing to probe local chemical environments at the microscale. Concerning ACPs, one question regards the distribution of (hydrogenated) phosphate species, as they may lead to various evolutionary trends. In this contribution, we purposely exploited the laser–beam interaction through Raman mapping to trigger the in situ HPO42−-to-P2O74− transformation. Analysis by a multivariate approach allowed us to spot P2O74− clusters resulting from HPO42−-rich initial domains. Moreover, a blue shift of the ν1PO43− band was noticed in the close vicinity of these clusters, thus evidencing a local evolution of the chemical composition of the ACP. These results, corroborated by differential thermal analysis, demonstrate the relevance of using the laser–sample interaction through local heating to probe the spatial evolution induced, in our case, by an ultrafast compaction process. Comparison of outcomes obtained using two different laser/power strategies finally evidenced the need to adapt the Raman analytical conditions to the behavior of the metastable material to analyze.","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 1","pages":"40-48"},"PeriodicalIF":2.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jrs.6732","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A Novel Incident Circular Polarized Light Raman Optical Activity (ICP-ROA) Spectrometer With Advanced Polarization Control 具有先进偏振控制功能的新型入射圆偏振光拉曼光学活性 (ICP-ROA) 光谱仪

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-18 DOI: 10.1002/jrs.6733

Klaus Hofmann, Luisa Martin, Ingo Fischer

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Sensitivity of the C–H Stretching Band in Raman Spectra to Phospholipid Order 拉曼光谱中的 C-H 伸展带对磷脂阶次的敏感性

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-18 DOI: 10.1002/jrs.6731

Yulia V. Zaytseva, Konstantin A. Okotrub, Nikolai V. Surovtsev

{"title":"Sensitivity of the C–H Stretching Band in Raman Spectra to Phospholipid Order","authors":"Yulia V. Zaytseva, Konstantin A. Okotrub, Nikolai V. Surovtsev","doi":"10.1002/jrs.6731","DOIUrl":"10.1002/jrs.6731","url":null,"abstract":"<div>\u0000 \u0000 Phospholipid bilayers, which are a major component of cellular membranes and some drug delivery vehicles, can be in different states of order depending on the conformations of the hydrocarbon tails and their mutual arrangement. The important task of experimental characterization of phospholipid order is often addressed using Raman spectra of the C–H stretching bands. Such characterization uses some empirical relationships for apparent maxima in the spectra, although the origin of the sensitivity of the C–H band to phospholipid order and its model description remain unclear. Surely, a correct description of the sensitivity of the C–H band to phospholipid order is critical for its proper application. Here, we provide a description of the ordering sensitivity of the C–H stretching band using a polarized Raman experiment with hydrated aligned multibilayers of a saturated phospholipid. By this way, Raman contributions from symmetric and antisymmetric vibrations of CH2 were obtained in a model-free manner. Experiments in a wide temperature range and the use of isotopic isolation helped us to consider separately the effects of conformational and lateral order of chains. The conformational sensitivity of the spectrum of antisymmetric vibrations was confirmed by DFT modeling. The outcomes of the study allowed us to provide recommendations for the use of the Raman spectrum of the C–H stretching band to characterize the conformational and lateral order of phospholipid-containing materials.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"55 11","pages":"1179-1189"},"PeriodicalIF":2.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Noninvasive Multitechnique Analysis of Baroque Amber Artworks From Gdansk: The Benefits of Using Raman Spectroscopy 对来自格但斯克的巴洛克琥珀艺术品进行非侵入式多技术分析：使用拉曼光谱的好处

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-10 DOI: 10.1002/jrs.6727

Anna Rygula, Anna Klisińska-Kopacz, Marta Matosz, Tomasz Wilkosz, Michał Obarzanowski, Paulina Krupska-Wolas, Karolina Skóra, Aldona Kopyciak, Joanna Harasim-Grym, Julio M. del Hoyo-Meléndez

{"title":"Noninvasive Multitechnique Analysis of Baroque Amber Artworks From Gdansk: The Benefits of Using Raman Spectroscopy","authors":"Anna Rygula, Anna Klisińska-Kopacz, Marta Matosz, Tomasz Wilkosz, Michał Obarzanowski, Paulina Krupska-Wolas, Karolina Skóra, Aldona Kopyciak, Joanna Harasim-Grym, Julio M. del Hoyo-Meléndez","doi":"10.1002/jrs.6727","DOIUrl":"10.1002/jrs.6727","url":null,"abstract":"<div>\u0000 \u0000 The multidisciplinary, noninvasive analysis of baroque amber artworks is part of a research project that deals with the most valuable objects from the Museum of Gdansk (Poland). The two most interesting objects will be presented here: a Baroque Gdansk wardrobe-shaped amber cabinet (made by Johann Georg Zernebach, Gdansk, 1724) and a crucifix (Gdansk, 17th century). Macro- (UV, IR, and X-radiography) and micro- (XRF and Raman spectroscopy) analytical methods were applied to reveal traces of old conservation treatments and uncover the techniques of the 17th and 18th century amber masters. UV photography shows the differences between the amber plates that are not so easily detected under visible light, while XRF spectrometry detects elements atypical for amber objects, suggesting previous conservation treatments. Confocal Raman measurements, especially Raman depth profiling, were performed for the amber artworks and allowed to detect areas of previous conservation treatments. Single-point scans were collected from the surface (0 μm) to a depth of −200 μm, with a step of 50 μm. The results allowed us to identify three different types of zones: where the amber was preserved without any protective layer, places where the amber was covered with a thin layer of a protective substance, and places where amber elements were compensated for loss using a binding agent and filler. The presented project allowed the development of a comprehensive methodology for the analysis of amber objects, especially to optimize the capabilities of confocal Raman microscopy. The combination of macro- and microanalytical techniques made it possible to obtain a broad overview of such complex artworks while optimizing the time and effort spent on the investigations.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"55 12","pages":"1372-1382"},"PeriodicalIF":2.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Micro-Raman Spectroscopy for the Identification of Drawing Materials Used Throughout the 17th and 20th Centuries 利用微拉曼光谱鉴定 17 世纪和 20 世纪使用的绘画材料

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-09 DOI: 10.1002/jrs.6728

Anna Klisińska-Kopacz, Anna Ryguła, Julio M. del Hoyo Meléndez

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Quantitative Raman Spectroscopy of Urea and Thiourea in the Reaction Mixtures of Allantoin and 4,5-Dihydroxyimidazolidine-2-Tione Formation 尿囊素和 4,5-二羟基咪唑烷-2-硫酮反应混合物中尿素和硫脲的定量拉曼光谱分析

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-09-01 DOI: 10.1002/jrs.6729

L. E. Kalichkina, P. K. Krivolapenko, V. P. Tuguldurova

{"title":"Quantitative Raman Spectroscopy of Urea and Thiourea in the Reaction Mixtures of Allantoin and 4,5-Dihydroxyimidazolidine-2-Tione Formation","authors":"L. E. Kalichkina, P. K. Krivolapenko, V. P. Tuguldurova","doi":"10.1002/jrs.6729","DOIUrl":"10.1002/jrs.6729","url":null,"abstract":"<div>\u0000 \u0000 The present work introduces a new approach to quantitative determine the reagent concentrations (thiourea and urea) using in situ Raman spectroscopy in the reaction mixture exemplified by the reactions of formation of allantoin and 4,5-dihydroxyimidazolidine-2-thione. The approach comprises the use of a commercially available immersion probe (MarqMetrix Process Elite BallProbe with sapphire lens) as a standard for the immersion probe band at 790 cm−1 of optical glass. This leads to a linear dependence of the ratio of the intensity of non-overlapping analyte bands at 1003 cm−1 of -C-N- vibrations in urea to the one of the 790 cm−1 immersion probe band on the concentration of urea in the test solution. The definable method parameters such as precision (repeatability and reproducibility), linearity, limit of detection (LoD), limit of quantitation (LoQ), and accuracy were determined. The quantitative Raman spectroscopy method is linear, precise within the range of determined concentrations from 0.75 to 2.00 M and can be used to calculate the kinetics of allantoin formation. Using thiourea as an example, it is shown that despite the partial overlap of the analyte band at 730 cm−1 of the -C=S vibrations of thiourea with the immersion probe band at 790 cm−1, the method to determine thiourea in the reaction of 4,5-dihydroxyimidazolidine-2-thione preparation is also linear and precise in the range of determined concentrations from 0.10 to 1.57 M.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"55 11","pages":"1165-1178"},"PeriodicalIF":2.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Spectroscopic Analysis of the Initial Step of the Maillard Reaction of d-Fructose and Nα-Acetyl-l-Lysine d-Fructose 和 Nα-Acetyl-l-Lysine 马氏反应初始步骤的光谱分析

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-08-31 DOI: 10.1002/jrs.6730

Tsung-Cheng Yang, Hirotsugu Hiramatsu

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Raman Spectroscopy for the Differentiation of Muscles and Tissues in Meat Using Chicken as a Model System 以鸡肉为模型系统，利用拉曼光谱区分肉类中的肌肉和组织

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2024-08-15 DOI: 10.1002/jrs.6725

Patience T. Shoko, Ewan W. Blanch, Peter J. Torley, Christopher Pillidge

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