Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy最新文献

{"title":"Colorimetric and SERS dual-mode sensing of capsaicin based on Au@PtNPs with enhanced peroxidase-like activity for gutter oil discrimination","authors":"Junkui Li,&nbsp;Chen Li,&nbsp;Wang Guo,&nbsp;Yiqing Guo,&nbsp;Xiaobo Zou,&nbsp;Zongbao Sun","doi":"10.1016/j.saa.2025.126124","DOIUrl":"10.1016/j.saa.2025.126124","url":null,"abstract":"<div><div>The development of a capsaicin detection system that integrates facile preliminary evaluation with high sensitivity and accuracy across a wide detection range is crucial for the discrimination of gutter oil and the protection of human health. In this study, we constructed a novel colorimetric/SERS dual-mode detection system utilizing peroxidase-like Au@Pt nanoparticles (NPs) that exhibit SERS-activity. The Au@Pt NPs feature a spherical gold nanoparticle core with synapse-like platinum nanoparticles distributed intermittently on their surface, this structure enhances the catalytic activity of the PtNPs and the SERS activity of the AuNPs, making them ideal for designing colorimetric/SERS dual-mode probes. Based on the colorimetric assay, we achieved a capsaicin detection range from 1 to 10,000 μM, with a limit of detection (LOD) of 3.48 μM, as determined by absorption spectroscopy analysis. Additionally, a linear calibration curve for capsaicin ranging from 10⁻⁹ to 10⁻⁵ M was established using the SERS method, yielding an LOD of 7.38 nM. By integrating the advantages of facile detection through colorimetric analysis with the high-sensitivity trace assay provided by SERS, this proposed dual-mode detection system demonstrates excellent sensitivity, reliability, selectivity, and wide detection range compared to previous probes and methods. Consequently, this method can serve as an efficient tool for monitoring oil quality.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126124"},"PeriodicalIF":4.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface-enhanced Raman spectroscopy facilitates the detection of multiple metabolic modulators","authors":"Yueyue Ma ,&nbsp;Na Zhou ,&nbsp;Zhichao Xia ,&nbsp;Yushi Shen ,&nbsp;Tao Yang ,&nbsp;Xiaojun Luo ,&nbsp;Yuanyuan Li","doi":"10.1016/j.saa.2025.126121","DOIUrl":"10.1016/j.saa.2025.126121","url":null,"abstract":"<div><div>Metabolic regulators can improve the athletic ability of athletes by regulating body metabolism, but it is not conducive to fair competition, so it is listed as a prohibited substance. At the same time, the State General Administration of Sport ordered major event organizers to test food for food-borne stimulants. Surface-enhanced Raman scattering (SERS) spectroscopy has been widely used because of its excellent sensitivity and strong spectral characteristics. Based on the available information, SERS spectrum data of metabolic regulators in food-related fields were lacking. In this study, we used gold dodecahedron nanoparticles as SERS active substrate and successfully captured the characteristic peaks of 6 metabolic regulatory factors. A low cost and stable SERS detection technique for detecting trimetazidine in milk samples with good recovery rate was proposed. Therefore, this method can not only protect the food safety of large-scale sports events, but also have broad application prospects in the food field.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126121"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of the optical properties of soymilk with different pH values using excitation-emission matrix and multiple light scattering","authors":"Takumi Murai,&nbsp;Yoshito Saito","doi":"10.1016/j.saa.2025.126120","DOIUrl":"10.1016/j.saa.2025.126120","url":null,"abstract":"<div><div>Fluorescence spectroscopy was evaluated for non-destructive pH measurement in soymilk using excitation-emission matrix (EEM). EEMs of 110 soymilk samples with different pH levels were measured, showing two characteristic fluorescence peaks at excitation/emission wavelengths of 280/340 and 365/460 nm, attributed to aromatic amino acids and other fluorescent compounds, respectively. Both peaks showed increased intensity with elevated pH levels. Partial Least Squares Regression (PLSR) and Support Vector Machine (SVM) models were then constructed using various preprocessing methods. The SVM model using raw EEM achieved the highest accuracy with R²cv of 0.972 and RMSECV of 0.095, while the PLSR model performed best with logarithmically transformed EEM showing R²cv of 0.951 and RMSECV of 0.127. Complementary visible-near infrared transmission measurements suggested that the fluorescence changes were related to the changed in light scattering properties under alkaline conditions. These results demonstrate the potential of fluorescence spectroscopy as a tool for non-destructive pH measurement in soymilk.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126120"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quenching mechanism of dimethylaminocyanobiphenyl aggregates by fluorescein in CTAB: An interplay between FRET and electrostatic interactions","authors":"Arulmozhi Puhazhendhi,&nbsp;Pavan Kumar Mandali,&nbsp;Soumya Sivalingam","doi":"10.1016/j.saa.2025.126117","DOIUrl":"10.1016/j.saa.2025.126117","url":null,"abstract":"<div><div>Fӧrster resonance energy transfer (FRET) is a widely used tool to study micro heterogeneous media. Herein, quenching mechanism of dimethylaminocyanobiphenyl aggregates in CTAB (DMACBA-S; donor) by fluorescein disodium salt (FLU; acceptor) was analyzed using steady-state and time-resolved fluorescence measurements. Even though, the quenching behavior resembled the characteristic FRET phenomenon, unusual spectral shifts in the emission maxima of DMACBA-S and FLU were observed. In-depth analysis of this uncommon spectral shifts and fluorescence decay curves of DMACBA-S in the presence and absence of FLU revealed that the quenching could be due to a combination of FRET and electrostatic interaction between the acceptor and the CTAB micelles which eventually resulted in the rupture of the micelle followed by the formation of weakly fluorescent DMACB aggregates in water (DMACBA-R). By varying the concentration of CTAB, a variation in the contribution from electrostatic interaction towards the quenching mechanism was observed. The study highlights the less known interaction of acceptor with the microheterogenous medium in FRET studies. The present results manifest the need for a deeper analysis of the experimental quenching data to avoid erroneous conclusions.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126117"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical understanding of the ABC persistent structure in strongly H-bonded systems: Computational analysis of phosphonic and bis-(heptafluoropropyl) phosphonic acid dimers in gas phase","authors":"Najeh Rekik","doi":"10.1016/j.saa.2025.126007","DOIUrl":"10.1016/j.saa.2025.126007","url":null,"abstract":"<div><div>Hydrogen bonds (HBs) that involve direct interaction with fluorine have been the subject of considerable research; however, the indirect influence of fluorine on the dynamics of the strongly hydrogen bonded systems as well as on neighboring donor and acceptor molecules remains inadequately understood and challenging to anticipate. In this paper, we present a theoretical analysis of the infrared absorption spectra of two different phosphinic acids in the gaseous state, R<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>POOH, namely the phosphinic acid (where R = H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> ) and the bis-(heptafluoropropyl) phosphonic acid (where R = C<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>F<span><math><msub><mrow></mrow><mrow><mn>7</mn></mrow></msub></math></span>). within the spectral range 750–3500 cm<span><math><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math></span> at a temperature domain of 345–500 K (Aslin et al., 2002). The equilibrium between the dimers and monomers, giving rise to the stability of the recorded spectra, is experimentally obtained at T =500 K. The resulting band has the characteristic of an ABC structure (Hadzi structure), which is typical to the spectra of structures characterized by exceptionally strong hydrogen bonds in solution and in crystal phase. The experimental spectra is contrasted with the one computationally determined using a theoretical model that congregates, Fermi resonances, Davydov coupling, the theory of strong anharmonic coupling and the effect of the reversible action of the medium on the anharmonic vibrational modes altogether with the same approach dealing with Kubo’s linear response theory. A satisfactory superimposition between the numerically generated spectra and the experimental infrared absorption spectra is elucidated. The theoretical analysis is performed through the examination of the effect of the commonly employed theories and approximations in order to illuminate how to numerically simulate the ABC structure. The method offers a clear explanation for the Hadzi structure’s formation by demonstrating that the BC diad is produced by the Fermi resonance mechanism, while the peak A is caused by the Davydov coupling mechanism. The clarification of the dynamics and the function of fluorine in hydrogen bonding could signify a notable progress in creating a comprehensive simulation tool designed to forecast the infrared absorption bands of compounds exhibiting strong and very strong hydrogen bonds, along with their interactions and affinity with DNA polymerase. This tool might make it possible to conduct methodical research on the intricate relationship between fluorine’s direct and indirect effects on the properties of physiologically active compounds and how they interact with drug-like targets.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126007"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Independent emission spectra of different fluorescent dyes based quasi-distributed polymer optical fiber surface plasmon resonance sensors","authors":"Azween Hadiera Hishamuddin ,&nbsp;Ahmad Sabirin Zoolfakar ,&nbsp;Nur Hidayah Azeman ,&nbsp;Mohd Hafiz Abu Bakar ,&nbsp;Fairuz Abdullah ,&nbsp;Wan Mohd Ebtisyam Mustaqim Mohd Daniyal ,&nbsp;Ahmad Ashrif A. Bakar ,&nbsp;Maizatul Zolkapli","doi":"10.1016/j.saa.2025.126112","DOIUrl":"10.1016/j.saa.2025.126112","url":null,"abstract":"<div><div>This study explores the development of quasi-distributed polymer optical fiber (POF) surface plasmon resonance (SPR) sensors, leveraging independent emission spectra for enhanced oxygen (O₂) detection. By integrating the strengths of SPR, POF, and fluorescence-based sensing techniques, this research addresses the limitations of traditional O₂ sensors. The sensors utilized platinum octaethylporphyrin (PtOEP), 5,10,15,20-tetrakis(pentafluorophenyl)-21H,23H-porphine palladium (II) (PdTFPP), and tris(4,7-diphenyl-1,10-phenanthroline) ruthenium (II) dichloride ([Ru(dpp)₃]²⁺), fluorescence dyes, providing distinct and independent emission spectra at 646 nm for Ag/PtOEP, 669 nm for Ag/PdTFPP and 520 nm for Ag/[Ru(dpp)₃]²⁺, enable multiplexing and spatially resolved measurements. It was demonstrated that Ag/PtOEP, Ag/PdTFPP and Ag/[Ru(dpp)₃]²⁺ coatings yield high sensitivity and linearity in O₂ detection. Specifically, the sensitivity values achieved are 0.048 nm/% for the Ag/PtOEP coating, 0.1317 nm/% for the Ag/PdTFPP coating, and 0.0191 nm/% for the Ag/[Ru(dpp)₃]²⁺ coating. The sensors exhibit a coefficient of determination (R²) of 0.9702, 0.9893 and 0.9337 for Ag/PtOEP, Ag/PdTFPP, and Ag/[Ru(dpp)₃]²⁺, respectively, highlighting their accuracy and reliability. The quasi-distributed POF SPR sensors have the potential to deliver precise, reliable, and real-time O₂ monitoring across various applications, including environmental monitoring, medical diagnostics, and industrial safety.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126112"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling an excited state intramolecular double proton transfer pathway in 2,5-bis(benzoxazole-2-yl)benzene-1,4-diol derivatives","authors":"Qiao Zhou ,&nbsp;Bifa Cao ,&nbsp;Peng Song ,&nbsp;Wanjia Wen","doi":"10.1016/j.saa.2025.126109","DOIUrl":"10.1016/j.saa.2025.126109","url":null,"abstract":"<div><div>Organic molecules exhibiting excited-state intramolecular double proton transfer (ESIDPT) have garnered significant research interest, largely driven by their prevalence in nature and the unique luminescent properties associated with this phenomenon. This study presents a detailed theoretical investigation into the dynamic mechanism of both single and dual cooperative Proton transfer (PT) in the first excited singlet (S₁) state of 2,5-bis(benzoxazole-2-yl)-1,4-dihydroxybenzene derivatives. The analysis meticulously incorporates solvent effects, specifically those of dichloromethane, to provide a comprehensive understanding of the PT processes. The occurrence of the ESIDPT process was confirmed by integrating infrared (IR) vibrational spectra, frontier molecular orbital analysis, and reduced density gradient (RDG) analysis. Additionally, the potential energy surfaces (PESs) for the ground (S₀) and S₁ states revealed a synergistic interaction between single and dual ESIPT processes within the S₁ state. Furthermore, variation in the charge distribution, resulting from the coupling of photoinduced electron transfer with ESIPT involving the DPA group, led to distinct PT propensities for the O₁ and O₄ atoms. Consequently, these configurations are unable to undergo simultaneous proton transfer, as demonstrated by the construction of a potential energy surface. In addition, the corresponding PT PESs show that the ESIPT reaction for Zinhbo-9 is much easier for the Zinhbo-5 modified with a t-Bu group, which affect O4–H5···N6 hydrogen bond. These theoretical computations provide a robust explanation of the observed experimental phenomena and suggest potential pathways for future advancements and applications of ESIDPT molecules.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126109"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compositional analysis of alternative protein blends using near and mid-infrared spectroscopy coupled with conventional and machine learning algorithms","authors":"R. dos Santos ,&nbsp;J. Cruz ,&nbsp;I. Muñoz ,&nbsp;P. Gou ,&nbsp;A. Nordon ,&nbsp;E. Fulladosa","doi":"10.1016/j.saa.2025.126114","DOIUrl":"10.1016/j.saa.2025.126114","url":null,"abstract":"<div><div>The non-invasive real-time analysis of the composition of alternative, plant-based protein sources is important to control high moisture extrusion processes and ensure the quality and texture of the final extrudates used in the elaboration of meat analogues. This study aims to analyse the composition and presence of gluten in blended plant-based alternative protein sources from pulse, cereal and pseudocereal origin by means of near infrared spectroscopy (NIRS) and mid infrared spectroscopy (MIRS) using conventional and machine learning algorithms. Blends were prepared using five alternative protein sources (barley, wheat, fava bean, lupin, and buckwheat) and spectra were acquired using a low-cost and a benchtop near-infrared spectrometer, and a mid-infrared spectrometer. Using the acquired spectra, partial least square regression (PLSR), support vector machine discriminant analysis (SVM-DA), partial least square discriminant analysis (PLS-DA), and convolutional neural networks (CNN) were used to develop predictive models to determine the composition and to identify samples containing gluten. The protein, moisture, carbohydrates and fat content in blends of alternative protein sources was determined with a RMSEP of 1.59, 0.18, 1.41, and 0.19 %, respectively, when using the benchtop NIR spectrometer and PLSR. Gluten-free samples were identified with high sensitivity (0.85) and accuracy (0.93) using PLS-DA. The study demonstrated that infrared spectroscopy can be used to analyse the composition of blends of alternative protein sources including pulses, cereals, and pseudocereals, as well as to identify gluten-free samples.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126114"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical and experimental spectroscopic analysis of new phenanthrene based compounds for organic solar cell device","authors":"M. Labiedh ,&nbsp;A. Hfaiedh ,&nbsp;A. Mabrouk","doi":"10.1016/j.saa.2025.126103","DOIUrl":"10.1016/j.saa.2025.126103","url":null,"abstract":"<div><div>This paper presents a combined theoretical and experimental spectroscopic investigation of new phenanthrene derivative compounds, having some new remarkable structural features. Their chemical synthesis was achieved by efficient Mizoroki-Heck coupling. The corresponding properties, including UV–Vis absorption, photoluminescence, thermal stability and electrochemistry data, were deeply elucidated and presented. Besides, theoretical geometry optimization and different simulated spectra were performed via Density Functional Theory (DFT) method, in which both the gas and liquid phases characteristic are elucidated. A representative set of electrons donating groups (methoxy) and withdrawing groups (cyano) are introduced in the main chemical backbone, to elucidate the role of lateral and side backbone substituents. Overall, the theoretical calculation was carried to examine some fundamental parameters: electric dipole moment (μ), E_HOMO, E_LUMO, electronegativity (χ), global chemical hardness (η), global softness (σ), matched the experimental measurements, showing a good correlation. Among them, some useful information about the interaction of these organic systems with surfaces of SWCNT has been calculated through conceptual DFT. The C₂:SWCNT(5,5) molecular blend with two different orientations to the nanotube axis, as active layer for conventional solar cell device, has been investigated. The characteristic parameters of the active layer and the device were consolidated by TD-DFT computational data and SILVACO-ATLAS software simulation results. Compatible energy models have been proposed simulating the electric response and band diagram of such optoelectronic devices.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126103"},"PeriodicalIF":4.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An imine COF as a dual-functional fluorescent sensing platform for vitamin K1 and water","authors":"Shili Qin ,&nbsp;Yu Gao ,&nbsp;Dan Wang ,&nbsp;Xingyu You ,&nbsp;Fuquan Zhao ,&nbsp;Hongtao Chu ,&nbsp;Ming Zhao ,&nbsp;Fenglong Jin","doi":"10.1016/j.saa.2025.126110","DOIUrl":"10.1016/j.saa.2025.126110","url":null,"abstract":"<div><div>Luminescent covalent organic frameworks (LCOFs) with large π-conjugated system were a family of crystalline porous materials with promising applications. However, the actual application and quenching mechanisms of the LCOFs with dual-functionality remain poor understood. Here, a micro-mesoporous luminescent covalent organic framework (LCOF-DT) with high crystallinity and good stability was prepared by the solvothermal method using 1, 3, 5-tri-(4-aminophenyl) benzene and 2, 5-dihydroxyterephthalaldehyde as monomers through Schiff base condensation reaction. The LCOF-DT exhibited not only a good sensitivity and colorimetric visualization for water in conventional organic solvents over a relatively broad linear range (0 %–50 %) but also showed exceptional fluorescent recognition capability for vitamin K1, even in the presence of 17 different competing substrates. Additionally, a sensitive, specific, rapid, and practical fluorescent method for vitamin K1 detection in the commercially vitamin K1 tablets was developed. Based on the aforementioned research, designing covalent organic frameworks with multifunctional fluorescent response would be a tendency in the further application of detection technology.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126110"},"PeriodicalIF":4.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}