Journal of Raman Spectroscopy最新文献_第2页

Lipid Quantification and Determination of Astaxanthin Conjugation by Raman Microscopy on Individual Copepod Eggs 桡足类卵的脂质定量和虾青素结合的拉曼显微镜测定

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-19 DOI: 10.1002/jrs.6803

Bram Martin, Andre G. Skirtach, Nico Boon, Marleen De Troch

{"title":"Lipid Quantification and Determination of Astaxanthin Conjugation by Raman Microscopy on Individual Copepod Eggs","authors":"Bram Martin, Andre G. Skirtach, Nico Boon, Marleen De Troch","doi":"10.1002/jrs.6803","DOIUrl":"https://doi.org/10.1002/jrs.6803","url":null,"abstract":"<div>\u0000 \u0000 Standard biochemical characterization of eggs from small marine species proceeds in bulk and is destructive, limiting multiple measurements or follow-up in time. Raman microscopy was used to overcome this limitation in the biochemical characterization of copepod eggs. The Raman peak ratio of astaxanthin (± 1153/320 cm−1) provided a good fit with the total fatty acid content measured by GC-MS. Fatty acid content and variability were determined between species, egg sacks of the same species and individual eggs of the same egg sack. Fatty acid content of eggs was species specific because of different FA concentration in the eggs and egg (sack) size differences between species. A Raman fingerprint allowed to classify eggs at species level and discriminated developing eggs of Acartia tonsa from stored eggs. Egg development was correlated with a molecular change in carotenoid pigmentation from protein-bound astaxanthin to free astaxanthin. Raman microscopy showed to be an effective technique for the characterization of individual copepod eggs, especially the quantification of egg fatty acid content. This technique can provide more in-depth insights in individual heterogeneity of copepod eggs. Raman microscopy can offer a large potential for nondestructive characterization of eggs of marine species beyond copepods, with implications in aquaculture and ecological monitoring studies.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"472-480"},"PeriodicalIF":2.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190740","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

Anomalous Raman Polarization Behaviors of ReS2 Thin Layers on Au Thin Film 金薄膜上ReS2薄膜的反常拉曼极化行为

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-19 DOI: 10.1002/jrs.6802

Yu Luo, Jundong Zhang, Weitao Su, Fei Chen, Yijie Zeng, Hong-Wei Lu, Peiqing Chen

{"title":"Anomalous Raman Polarization Behaviors of ReS2 Thin Layers on Au Thin Film","authors":"Yu Luo, Jundong Zhang, Weitao Su, Fei Chen, Yijie Zeng, Hong-Wei Lu, Peiqing Chen","doi":"10.1002/jrs.6802","DOIUrl":"https://doi.org/10.1002/jrs.6802","url":null,"abstract":"<div>\u0000 \u0000 ReS2 thin layers exhibit polarization-dependent Raman behaviors owing to anisotropic electron–phonon interaction. Herein, we observed anomalous Raman polarization behaviors of ReS2 flakes prepared on Au thin films. In the angle-resolved polarization Raman spectroscopy (ARPRS) measurement, the intensity polarization plots of different Raman modes of the ReS2 flakes prepared on gold thin film rotate by certain angles compared with those of the same flake prepared on SiO2. In particular, such rotation depends strongly on the flake thickness and the excitation laser wavelengths. The maximum rotation angles can be 14.8° for the \u0000<math>\u0000 <msubsup>\u0000 <mi>A</mi>\u0000 <mi>g</mi>\u0000 <mn>3</mn>\u0000 </msubsup></math> mode of the 3L and 40° for the \u0000<math>\u0000 <msubsup>\u0000 <mi>A</mi>\u0000 <mi>g</mi>\u0000 <mn>2</mn>\u0000 </msubsup></math> mode of the 7L, respectively. Such observations greatly enrich the anisotropic optical behaviors of ReS2, which may facilitate the design of future anisotropic optoelectronic devices.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"531-537"},"PeriodicalIF":2.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190741","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

Characterization of the Urotensin II Peptide by SERS Using Silver Nanoparticles 银纳米粒子SERS表征尿紧张素II肽

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-19 DOI: 10.1002/jrs.6800

Aliona Klimovich, Tatjana Charkova, Ieva Matulaitiene

{"title":"Characterization of the Urotensin II Peptide by SERS Using Silver Nanoparticles","authors":"Aliona Klimovich, Tatjana Charkova, Ieva Matulaitiene","doi":"10.1002/jrs.6800","DOIUrl":"https://doi.org/10.1002/jrs.6800","url":null,"abstract":"<div>\u0000 \u0000 In this work, the vibrational properties of a potent vasoconstrictor—human Urotensin II (U-II) peptide—were investigated for the first time using Raman and surface-enhanced Raman scattering (SERS) technique. For this purpose, silver nanoparticles (Ag NPs) with a size of 65 ± 5 nm were synthesized, and a protocol for “gentle” washing of samples from stabilizers, reducing agents, or unstable sample/Ag NPs clusters was developed, which allowed the study of target molecules. It was shown that the interaction of U-II with the silver surface took place through the functional groups of phenylalanine, tryptophan, and tyrosine amino acids located in the cyclic moiety of peptide, and the S–S bridge between the two cysteines is not broken. It was found that in the adsorbed U-II peptide –CCSSCC– moiety, the S–S bond is in the gauche conformation, whereas the –CCS– fragment exists in PC–G and PC–T conformations. Additionally, it was shown that U-II peptide replaced citrate anions on Ag NPs during the process of adsorption. Band assignments for Raman and SERS were proposed.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"464-471"},"PeriodicalIF":2.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190739","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

SERS Characterization of Filtrate Portions of Typhoid Blood Serum Samples Using 30 kDa Filtration Devices 30 kDa过滤装置对伤寒血清滤液部分的SERS表征

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-18 DOI: 10.1002/jrs.6793

Maida Ehsan, Muhammad Suleman Hassan, Haq Nawaz, Muhammad Irfan Majeed, Nosheen Rashid, Norah A. Albekairi, Abdulrahman Alshammari, Arslan Ali, Muhammad Zeshan Khalil, Abdul Lateef, Iqra Arshad, Iqra Mobeen, Saqib Ali

{"title":"SERS Characterization of Filtrate Portions of Typhoid Blood Serum Samples Using 30 kDa Filtration Devices","authors":"Maida Ehsan, Muhammad Suleman Hassan, Haq Nawaz, Muhammad Irfan Majeed, Nosheen Rashid, Norah A. Albekairi, Abdulrahman Alshammari, Arslan Ali, Muhammad Zeshan Khalil, Abdul Lateef, Iqra Arshad, Iqra Mobeen, Saqib Ali","doi":"10.1002/jrs.6793","DOIUrl":"https://doi.org/10.1002/jrs.6793","url":null,"abstract":"<div>\u0000 \u0000 Typhoid fever remains a significant global public health concern and continues to pose serious diagnostic challenges, particularly in the differentiation of different stages of infection. In this study, surface-enhanced Raman spectroscopy (SERS) combined with ultracentrifugation was explored to design a reliable method for characterization and identification of typhoid serum filtrate. During the analysis of serum samples by SERS, the presence of high molecular weight fractions (HMWF) occupying greater surface area masks the presence of low molecular weight fractions (LMWF). Therefore, HMWF was removed from the healthy and typhoid serum samples, and SERS was employed for the biomolecular analysis and differentiation of filtrate portions of serum containing LMWF less than 30 kDa. Silver nanoparticles, as substrates, were used that enhanced Raman signals of the biomolecules in the filtrate samples. The results show notable differences in the spectra of two stages of typhoid and healthy samples (control group) at 394, 648, 742, 771, 930, 1012, 1218, 1424, and 1538 cm−1. A chemometric tool, principal component analysis (PCA), was used to differentiate early- and late-stage typhoid from each other and control group. PCA highlighted the spectral differences between healthy and diseased samples and classified them separately that proves the diagnostic ability of SERS from LMWF of serum samples. SERS has characterized and differentiated effectively early- and late-stage typhoid from each other as well as from healthy individuals by using LMWF of the blood serum samples. The results proved the diagnostic ability of SERS for typhoid fever and offered a noninvasive, rapid, and cost-effective method for disease detection and progression study.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"452-463"},"PeriodicalIF":2.4,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191064","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

Dielectric Properties of Ferroelectric Domain Walls by Raman Spectroscopy 用拉曼光谱研究铁电畴壁的介电特性

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-18 DOI: 10.1002/jrs.6795

Pavel Zelenovskiy, Andrei Gladkikh, Vladimir Shur

引用次数: 0

Raman Spectroscopic Study of Photostructural and Photochemical Transformations on the Surface of Thermally Evaporated (As1–xBix)2S3 Films 热蒸发（As1-xBix）2S3薄膜表面光结构和光化学转化的拉曼光谱研究

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-10 DOI: 10.1002/jrs.6792

Yuriy Azhniuk, Vasyl Lopushansky, Stepan Hasynets, Volodymyr Kryshenik, Vasyl Loya, Ivan Voynarovych, Alexander V. Gomonnai

{"title":"Raman Spectroscopic Study of Photostructural and Photochemical Transformations on the Surface of Thermally Evaporated (As1–xBix)2S3 Films","authors":"Yuriy Azhniuk, Vasyl Lopushansky, Stepan Hasynets, Volodymyr Kryshenik, Vasyl Loya, Ivan Voynarovych, Alexander V. Gomonnai","doi":"10.1002/jrs.6792","DOIUrl":"https://doi.org/10.1002/jrs.6792","url":null,"abstract":"<div>\u0000 \u0000 Amorphous (As1–xBix)2S3 films with x ≤ 0.18 were prepared by thermal evaporation and studied by Raman spectroscopy. The measured Raman spectra show the evidence for noticeable rearrangement of the amorphous network upon adding Bi to the film composition. A narrow peak near 270 cm−1 is a signature of arsenolite As2O3 crystallites formed on the As2S3-based film surface due to visible light-induced photo-oxidation, which has been previously reported only under illumination by ultraviolet light. This peak is also revealed in the Raman spectra of the (As1–xBix)2S3 films immersed in isopropanol, which means that oxygen that participates in the photo-oxidation reaction does not come from the ambient air but had been absorbed by film at the pre-condensation stage. Non-thermal character of the photoinduced mass transfer in amorphous chalcogenides is confirmed. Photosoftening plays an important role in enhancing the mobility of atoms and enabling the photochemical reactions on the film surface at mild temperatures.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"512-522"},"PeriodicalIF":2.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191076","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

Surface-Enhanced Raman Scattering and Cell Imaging Ability of Plasmonic Tags Based on Covalent Conjugates of Gold Nanorods With Aromatic Alkynes 基于金纳米棒与芳香炔共价偶联物的等离子体标签的表面增强拉曼散射和细胞成像能力

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-10 DOI: 10.1002/jrs.6791

Andrei I. Demenshin, Evgenii V. Borisov, Viktor N. Sorokoumov, Elena V. Solovyeva

{"title":"Surface-Enhanced Raman Scattering and Cell Imaging Ability of Plasmonic Tags Based on Covalent Conjugates of Gold Nanorods With Aromatic Alkynes","authors":"Andrei I. Demenshin, Evgenii V. Borisov, Viktor N. Sorokoumov, Elena V. Solovyeva","doi":"10.1002/jrs.6791","DOIUrl":"https://doi.org/10.1002/jrs.6791","url":null,"abstract":"<div>\u0000 \u0000 The inherent benefits of Raman spectroscopy make it a suitable tool for the analysis of complex biological objects. Detection and imaging of mammalian cells is one of its development areas. Plasmonic tags endowed with alkyne reporter intended for bioimaging by surface-enhanced Raman scattering in the silent region are presented. Gold nanorods with covalently conjugated 4-aminotolane were obtained using dithiobis (succinimidyl propionate) and characterized by UV–Vis absorbance, transmission electron microscopy, and dynamic light scattering. Verification of surface amide bonds formation was performed with attenuated total reflectance and X-ray photoelectron spectroscopy. Surface-enhanced Raman scattering spectra of the tags were registered in various media and compared with a feedback from the similar system obtained through non-specific adsorption of 4-aminotolane on gold nanorods. Cytotoxicity of Raman reporter itself and its conjugates with gold nanorods were verified on HeLa cell line. Spectral mapping and scanning electron microscopy revealed the localized intracellular accumulation of the tags. The challenge associated with reduced imaging area due to formation of the tags aggregates inside the cells is pointed out.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"491-498"},"PeriodicalIF":2.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191045","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

The Anisotropy of Photoluminescence of Gemstones and Materials: Cr-Bearing Corundum and Chrysoberyl 宝石和材料的光致发光各向异性：含铬刚玉和金绿宝石

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-03-03 DOI: 10.1002/jrs.6785

Linling Dong, Xinxin Gao, Yimiao Liu, Ren Lu

{"title":"The Anisotropy of Photoluminescence of Gemstones and Materials: Cr-Bearing Corundum and Chrysoberyl","authors":"Linling Dong, Xinxin Gao, Yimiao Liu, Ren Lu","doi":"10.1002/jrs.6785","DOIUrl":"https://doi.org/10.1002/jrs.6785","url":null,"abstract":"<div>\u0000 \u0000 Raman and photoluminescence spectroscopy measurements were conducted on corundum and chrysoberyl in various orientations. This research primarily focused on elucidating the anisotropy of photoluminescence in gemstones and related materials. For this purpose, two classic gem materials—corundum (a uniaxial crystal) and chrysoberyl (a biaxial crystal)—were utilized. The investigation of photoluminescence anisotropy in these materials provided deeper insights into the structural characteristics of gemstones, including local symmetry environment and multisite structure. The analysis of the photoluminescence spectra revealed that both corundum and chrysoberyl exhibit clear anisotropy. Additionally, these spectra were dependent on the observed polarization. Specifically, the band shape and relative intensity of R-lines varied under different crystallographic orientations. Furthermore, their intensities attained local maximum or minimum values when the crystallographic orientation aligned with the polarization direction of the scattered light. When combined with polarized Raman spectroscopy, it was confirmed that the intensities achieved local maximum or minimum values under parallel polarization configurations when the sample's polarization direction was parallel to the crystallographic orientation. Therefore, photoluminescence spectroscopy emerges as a rapid, precise, and nondestructive method for identifying the crystallographic orientation of gemstones and materials. Upon comparing the photoluminescence spectra and their corresponding polarization degrees of chrysoberyl and ruby, it became apparent that chrysoberyl, due to its lower symmetry and multisite structure encompassing Cr-bearing octahedra, displayed more pronounced anisotropy in its spectrum along a specific polarization direction (E⊥c) compared with corundum. Moreover, chrysoberyl exhibited anisotropy in a greater number of directions than corundum.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 6","pages":"499-511"},"PeriodicalIF":2.4,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191122","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

Raman Spectroscopy and DFT Study of Spin-Reorientation Transition in the Nickel-Cobalt Orthoborates 镍钴正硼酸盐中自旋重取向跃迁的拉曼光谱和DFT研究

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-02-27 DOI: 10.1002/jrs.6784

Svetlana N. Sofronova, Svetlana N. Krylova, Maksim S. Pavlovskii, Alexander S. Krylov

{"title":"Raman Spectroscopy and DFT Study of Spin-Reorientation Transition in the Nickel-Cobalt Orthoborates","authors":"Svetlana N. Sofronova, Svetlana N. Krylova, Maksim S. Pavlovskii, Alexander S. Krylov","doi":"10.1002/jrs.6784","DOIUrl":"https://doi.org/10.1002/jrs.6784","url":null,"abstract":"<div>\u0000 \u0000 Nickel-cobalt oxyborates (Ni,Co)3B2O6 with a kotoite-type orthorhombic structure are known as antiferromagnetic materials and are of interest for optical applications and as promising battery anode materials. We report and analyze the results of experimental low temperature Raman studies of the phonon spectra measured in some polarizations of the Ni3B2O6, Ni2.81Co0.19B2O6, Ni2.4Co0.6B2O6, Ni2.07Co0.93B2O6, and Co3B2O6 crystals. Simulations of the density functional theory of Raman spectra of the Ni3B2O6 and Co3B2O6 crystals have been performed and analyzed. The vibrational modes of the Ni3B2O6 and Co3B2O6 crystals were interpreted. Low-wavenumber modes in the Raman spectra are associated with Ni and Co atoms vibrations accompanying BO3 group deformations. Clear evidence of spin-phonon interaction was found for some specific phonons below \u0000<math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mrow>\u0000 <mi>T</mi>\u0000 </mrow>\u0000 <mrow>\u0000 <mi>N</mi>\u0000 </mrow>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {T}_N $$</annotation>\u0000 </semantics></math>. The anomalies in the behavior of these phonon modes as a function of the nickel concentration in the crystal have been presented. The position and intensity of the Raman modes decrease when the Ni atoms are replaced by Co atoms.\u0000 </div>","PeriodicalId":16926,"journal":{"name":"Journal of Raman Spectroscopy","volume":"56 5","pages":"435-445"},"PeriodicalIF":2.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831489","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

Proof of Concept: Macro-Raman Mapping of a Three-Dimensional Object 概念证明：三维物体的宏观拉曼映射

IF 2.4 3区化学

Journal of Raman Spectroscopy Pub Date : 2025-02-20 DOI: 10.1002/jrs.6786

Eva Vermeersch, Peter Vandenabeele

引用次数: 0