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

{"title":"Host-guest doped organic room temperature phosphorescence with a dual-fused-ring effect for near-infrared multiple-anticounterfeiting applications","authors":"Xiaochun Liu ,&nbsp;Kangyao Chen ,&nbsp;Shiyu Wu ,&nbsp;Yitong Jiang ,&nbsp;Hui Tang ,&nbsp;Ning Ma ,&nbsp;Haotian Jiang ,&nbsp;Yahui Zhang","doi":"10.1016/j.saa.2025.126111","DOIUrl":"10.1016/j.saa.2025.126111","url":null,"abstract":"<div><div>The near-infrared (NIR) emission host–guest doped organic room temperature phosphorescence (ORTP) materials provide significant advantages and application for information anti-counterfeiting applications. The fused-ring structure of guest molecules is considered to be an effective method for redshirting the emission wavelength. Herein, we present a dual-fused-ring (DFR) guest strategy to develop NIR emission host–guest doped ORTP system. Five guest molecules with DFR effect were synthesized, incorporating a fused-ring core (1,2,3,4-tetraphenylnaphthalene, TPN) and various fused-ring substituents (benzene, naphthalene, anthracene, and pyrene). Using benzophenone (BPO) as the host, BPO/TPNs system exhibited excellent phosphorescence properties with emission wavelength ranging from 541 to 766 nm and lifetime from 27 to 355 ms. The experimental and theoretical studies prove that DFR strategy effectively lowers the lowest triplet excited state (T₁) level and improve intersystem crossing (ISC) efficiency. The outstanding color- and time-dependent features of BPO/TPNs enable multi-anticounterfeiting applications. This work provides a facile and effective strategy for designing ORTP materials with both long wavelengths and extended lifetimes with DFR effect.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126111"},"PeriodicalIF":4.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734588","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":"A novel coumarin-incorporated lanthanide coordination nanoprobe for ratiometric sensing of tetracycline","authors":"Yufei Yang ,&nbsp;Menglin Xin ,&nbsp;Lijie Huang ,&nbsp;Yuanqiang Hao ,&nbsp;Maotian Xu","doi":"10.1016/j.saa.2025.126108","DOIUrl":"10.1016/j.saa.2025.126108","url":null,"abstract":"<div><div>Tetracycline (Tc), a broad-spectrum antibiotic for treating bacterial infections, poses significant risks to human health and the environment. This study presents a novel lanthanide coordination probe, AMP/Eu/CMP, for the ratiometric detection of Tc. The pyridine-appended coumarin derivative, CMP, acting as a stable internal reference, combines with AMP and Eu³⁺ to form the robust ratiometric probe AMP/Eu/CMP. Upon binding to Tc, Eu³⁺ fluorescence (emission at 616 nm) is sensitized while CMP fluorescence (emission at 505 nm) remains unchanged, resulting in a clear fluorescence shift from blue-green to red, enabling effective ratiometric detection of Tc. By integrating a smartphone color recognition app, rapid and visual detection of tetracycline concentrations is achieved. Additionally, paper-based test strips were developed for on-site Tc detection, exhibiting a linear response across a wide concentration range, making this method suitable for applications in food safety, pharmaceutical analysis, and environmental monitoring. The use of a fluorescent molecule with unique photophysical properties as an internal reference enables the construction of a high-performance, ratiometric lanthanide coordination polymer probe that is rapid, simple, and cost-effective, providing valuable insights for the development of future fluorescence sensors.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126108"},"PeriodicalIF":4.3,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697169","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":"A machine learning-based nuclear magnetic resonance profiling model to authenticate ’Jerez-Xérès-Sherry’ wines","authors":"Jaime Hiniesta-Valero,&nbsp;Alejandra Guerra-Castellano,&nbsp;Andrea Fernández-Veloso,&nbsp;Miguel A. De la Rosa,&nbsp;Irene Díaz-Moreno","doi":"10.1016/j.saa.2025.126102","DOIUrl":"10.1016/j.saa.2025.126102","url":null,"abstract":"<div><div>Traditionally, wine quality and certification have been assessed through sensory analysis by trained tasters. However, this method has the limitation of relying on highly specialized individuals who are typically trained to evaluate only specific types of products, such as those associated with a particular Denomination of Origin (D.O.), etc. While tasters can often identify instances of fraud, they are generally unable to pinpoint its origins or explain the mechanisms behind it.</div><div>On the other hand, classical biochemistry has made significant progress in understanding various aspects of winemaking. However, it has yet to identify the specific metabolites responsible for the unique characteristics of wines, particularly those influenced by complex variables involving multiple compounds, such as geographical differences between regions or vineyards. The concept of the “<em>Terroir</em> fingerprint” has emerged as a novel approach to wine certification. The concept refers to the unique characteristics imparted to a wine by its geography, climate, and aging process. Nuclear Magnetic Resonance (NMR) technology plays a pivotal role in establishing this “<em>Terroir</em> fingerprint” because it enables precise identification, quantification, and differentiation of the compounds present in wine. NMR provides a highly reproducible and specific method for certification. This work introduces an innovative project that combines NMR technology with Artificial Intelligence to create a profiling model for certifying the authenticity and quality of ‘Jerez-Xérès-Sherry’ wines.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126102"},"PeriodicalIF":4.3,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697168","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":"Deciphering the molecular fingerprint of haemoglobin in lung cancer: A new strategy for early diagnosis using two-trace two-dimensional correlation near infrared spectroscopy (2T2D-NIRS) and machine learning techniques","authors":"Renjie Fang ,&nbsp;Jialiang Wang ,&nbsp;Xin Han ,&nbsp;Xiangxian Li ,&nbsp;Jingjing Tong ,&nbsp;Yusheng Qin ,&nbsp;Minguang Gao ,&nbsp;Xiang Huang ,&nbsp;Min Jia ,&nbsp;Hongzhi Wang ,&nbsp;Qingmei Deng","doi":"10.1016/j.saa.2025.126107","DOIUrl":"10.1016/j.saa.2025.126107","url":null,"abstract":"<div><div>Lung cancer remains one of the deadliest malignancies worldwide, highlighting the need for highly sensitive and minimally invasive early diagnostic methods. Near-infrared spectroscopy (NIRS) offers unique advantages in probing molecular vibrational information from blood, effectively capturing potential structural changes in haemoglobin (Hb) in lung cancer patients. In this study, we address the challenge of detecting subtle Hb features within the broader blood matrix and introduce an innovative two-stage spectral analysis framework. First, continuous wavelet transform (CWT) is employed to enhance spectral resolution and reinforce the key absorption bands of Hb. Subsequently, two-trace two-dimensional correlation spectroscopy (2T2D-COS) is applied to examine the fine vibrational differences–in both synchronous and asynchronous spectra–between lung cancer patients and healthy controls, revealing alterations in Hb secondary structures (e.g., α-helices and β-sheets). Results show that critical Hb-related peaks at 4862 cm⁻¹, 4615 cm⁻¹, and 4432 cm⁻¹ undergo significant changes in lung cancer samples. Furthermore, combining these refined spectral features with machine learning classifiers (e.g., support vector machines) achieves an overall accuracy of 97.50 % and a sensitivity of 100.00 %. This work not only confirms the value of NIRS in detecting protein-level molecular information in blood but also presents a promising, efficient spectroscopic strategy for early lung cancer diagnosis, offering broad biomedical applicability.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126107"},"PeriodicalIF":4.3,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734587","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":"A pyrene based novel di-Schiff base colorimetric and turn-on fluorescent-chemosensor for selective and sensitive detection of Hg2+ ion: Biological, logic gate and real sample applications","authors":"Abhilash Pandey ,&nbsp;Dishen Kumar ,&nbsp;Srishti Dutta ,&nbsp;Sounik Manna ,&nbsp;Sujata Maiti Choudhury ,&nbsp;Vanshika Sharma ,&nbsp;Amit Kumar Manna ,&nbsp;Goutam Kumar Patra","doi":"10.1016/j.saa.2025.126104","DOIUrl":"10.1016/j.saa.2025.126104","url":null,"abstract":"<div><div>Following a simple synthetic process, a new pyrene derivative with a benzildihydrazone moiety has been synthesised and used for selective detection of Hg²⁺ across four distinct channels (colorimetric, absorption, emission, and bio-imaging). When Hg²⁺ was present, the chemosensor <strong>L</strong> exhibited a noticeable increase in fluorescence, changing colour from yellow to colourless, while other metal ions only caused slight variations in fluorescence intensity as well as colour. The fluorescent-based assay’s sensitivity for Hg²⁺ is 1.04 × 10⁻⁶ M and colorimetric detection limit is 7.83 × 10⁻⁶ M, which are significantly lower than the threshold specified in the World Health Organization’s (WHO) drinking water guidelines. The 1:1 stoichiometric complexation between <strong>L</strong> and Hg²⁺ is demonstrated by the Job plot, and the ESI-MS spectra data. <strong>L</strong> has practical applications in real sample analysis, molecular logic gate and biology. Confocal fluorescence microscopy imaging in MCF 7 and human lymphocyte cells (HLCs) showed that <strong>L</strong> could be used as an effective fluorescent probe for detecting Hg²⁺ in living cells. Moreover <strong>L</strong> may be employed as anticancer drug without causing any harmful consequences at the given concentrations and incubation duration. <strong>L</strong> has also real sample and logic gate application.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126104"},"PeriodicalIF":4.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715633","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":"Improving 5-halouracils SERS detection driven by Watson & Crick pairing recognition. A spectroscopic & DFT study","authors":"Antonio M. Neto ,&nbsp;Maycom C. Valeriano ,&nbsp;Marcia L.A. Temperini ,&nbsp;Paula Homem-de-Mello ,&nbsp;Mónica B. Mamián-López","doi":"10.1016/j.saa.2025.126091","DOIUrl":"10.1016/j.saa.2025.126091","url":null,"abstract":"<div><div>The halogenated C5-substituted uracil derivatives (5-fluor-, 5-chloro, and 5-bromouracil) have drawn attention recently due to their pharmacological uses, properties, and importance as biomarkers and water pollutants. From an analytical point of view, these species are expected to be at very low levels in biological and environmental samples, and the development of methodologies for their determination is a central goal in research. The Raman technique and one of its special effects, Surface-Enhanced Raman Scattering (SERS), is a very suitable approach for detecting and quantifying these compounds. In practice, enhancing Raman scattering requires a nanostructured noble metal surface with the species of interest attached to it. Still, to maximize the effect, a deeper comprehension of the nature of the analyte-metal surface interaction is desirable. The structural information SERS spectra provide can be complemented by theoretical approaches, such as the Density Functional Theory (DFT) calculations. This work studied three 5-halouracils attached to silver nanoparticles (AgNPs) from experimental and theoretical perspectives. The observed patterns in the spectroscopic behavior showed a trend related to the electronegativity at the halogenated moieties, suggesting their direct influence in enhancing C<img>C and C<img>O stretching modes. Then, the formation of base pairs with adenine through hydrogen bonding was studied as a strategy to improve the detectability through SERS, supported by the well-known high affinity of adenine towards metal nanoparticles. We show that adenine favors the orientation of the 5-halouracils, reaching an additional signal enhancement that is very useful for analytical purposes, as demonstrated for 5-FU, reaching a limit of detection (LOD) of 2.36 nmol L⁻¹. Wavenumber shifts and intensification of N<img>H modes observed in the SERS spectra, along with DFT calculations, strongly suggest that forming hydrogen bonding (N<img>H----N) upon the interaction of the base pairs with an Ag₂₀ cluster is key for improving the halouracils LOD through SERS.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126091"},"PeriodicalIF":4.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697154","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":"Detection and quantification of pork adulteration in beef meatballs with Raman spectroscopy and near infrared spectroscopy","authors":"Zaqlul Iqbal ,&nbsp;Nils Kristian Afseth ,&nbsp;Annelies Postelmans ,&nbsp;Jens Petter Wold ,&nbsp;Petter Vejle Andersen ,&nbsp;Joni Kusnadi ,&nbsp;Wouter Saeys","doi":"10.1016/j.saa.2025.126069","DOIUrl":"10.1016/j.saa.2025.126069","url":null,"abstract":"<div><div>One of the main halal concepts requires that food is free from pork substances. Muslim-majority countries establish halal regulations that require the screening of processed meat products, such as meatballs, are screened for adulteration with pork meat to guarantee appropriate halal certification for consumers. Currently, halal authorities rely on the analysis of DNA, protein, or fat with RT-PCR, LC-MS, or GC-FID, which are reliable but are not suitable for rapid screening of large numbers of samples. Hence, high throughout screening tools are demanded to identify suspected samples. Vibrational spectroscopy methods such as Raman spectroscopy (RS) and Near Infrared spectroscopy (NIRS) are widely studied as fast and non-destructive methods for compositional analysis of agrifood products. Therefore, the aim of this study was to evaluate their potential for screening of suspected meatball samples. To this end, different batches of pure beef meatballs and meatballs with different levels of adulteration (3, 5, 10, 50, and 100 % w/w) were prepared and scanned in backscattering (RS) and reflectance (NIRS) mode in intact and cut form. The acquired Raman spectra had dominant peaks at 1657 cm⁻¹, 1443 cm⁻¹ and 1299 cm⁻¹, which were attributed to saturated and unsaturated fat, while the dominant peaks in the NIR spectra corresponded to O–H bonds of water (1457 nm and 1934 nm). The cross-sectioned configuration was found to provide more stable classification performance compared to measurements on intact meatballs for both RS and NIRS. The accuracy of the partial least squares-discriminant analysis (PLS-DA) models for cross-sectioned samples using four latent variables ranged from 52.50 % to 85.00 % for RS and from 58.97 % to 75.00 % for NIRS. The performance of RS and NIRS shows little difference, but RS provides better insights on primary component of meat. For further research, improving the quality of Raman signal with a higher excitation wavelength laser or RS techniques that minimize fluorescence interference may improve model performance.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126069"},"PeriodicalIF":4.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705163","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":"Bimetallic SERS platform with femtomolar sensitivity for in situ monitoring of catalytic reactions","authors":"Yuqi Wan ,&nbsp;Jingkun Li ,&nbsp;Guoyong Jiang ,&nbsp;Fuwei Pi","doi":"10.1016/j.saa.2025.126092","DOIUrl":"10.1016/j.saa.2025.126092","url":null,"abstract":"<div><div>We developed a gold-silver bimetallic surface-enhanced Raman scattering (SERS) chip (AuNPs@AuAg NSs island array chip) that combines excellent SERS enhancement with in situ catalytic properties. This platform exhibits superior plasmonic catalytic capabilities, enabling rapid in situ monitoring of redox reactions without the need for chemical reductants. Additionally, under simulated sunlight, the chip achieved effective degradation of methylene blue (MB) molecules, with a removal rate of 95.65 %, demonstrating its potential for environmental safety applications. The chip’s uniform and dense SERS hotspots allow for the detection of pollutants at extremely low concentrations (as low as 10⁻¹⁵ M), offering a powerful tool for trace-level detection of hazardous substances. This work highlights the potential of such nanostructures for in situ monitoring of catalytic reactions and pollutant degradation, as well as for rapid, non-destructive, and high-throughput detection of ultra-low concentrations of analytes.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126092"},"PeriodicalIF":4.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697167","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":"Quantitative detection of potassium chloride solutions at different concentrations using terahertz waves","authors":"Yifan Li,&nbsp;Wei Shi,&nbsp;Yusong Zhang,&nbsp;Huanlin Li","doi":"10.1016/j.saa.2025.126099","DOIUrl":"10.1016/j.saa.2025.126099","url":null,"abstract":"<div><div>Terahertz detection, utilizing electromagnetic waves within the terahertz spectral band, offers a sophisticated approach for the analysis and identification of materials. This technique capitalizes on the distinctive resonant interactions between terahertz waves and the vibrational modes of various non-polar substances and biochemical entities. A notable challenge arises in the terahertz time-domain spectroscopy (THz-TDS) when applied to water-rich samples, owing to the significant absorption characteristics of water molecules at these frequencies. Although various methodologies exist for the detection of potassium chloride, a common substance with extensive applications, its analysis using THz-TDS, particularly in aqueous solutions, remains unexplored in literature. This investigation delineates the terahertz spectral behavior of potassium chloride in powdered form and extends to evaluate aqueous solutions with concentrations ranging from 3 to 60 mmol/L. The findings indicate a pronounced absorption peak within the terahertz range for potassium chloride solutions, which progressively lowers in intensity as the concentration increases. Consequently, THz-TDS emerges as a swift, precise, non-invasive, and safe modality for the quantification of potassium chloride in solutions.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126099"},"PeriodicalIF":4.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737807","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":"Synthesis and spectroscopic analysis of TiO2:Dy3+ phosphor for optical and pharmaceutical applications","authors":"K. Greeshma ,&nbsp;Amrutha K. Adiyodi ,&nbsp;S.S. Ancy ,&nbsp;Shruti P. Dhale ,&nbsp;Nilesh S. Ugemuge ,&nbsp;K.M. Nissamudeen","doi":"10.1016/j.saa.2025.126086","DOIUrl":"10.1016/j.saa.2025.126086","url":null,"abstract":"<div><div>The emerging nanomaterial based on titanium dioxide with a series of Dy³⁺-doped TiO₂ nanoparticles were synthesized first time using solvothermal method. X-ray diffraction (XRD) analysis confirmed an anatase-type tetragonal structure (space group I4₁/amd) with successful incorporation of dysprosium into the TiO₂ lattice. Scanning Electron Microscopy (SEM) characterized the morphology and particle size, while Raman spectroscopy further validated the formation of TiO₂ nanoparticles and highlighted the influence of Dy³⁺ doping on phase stability. The luminescence properties of Dy³⁺-TiO₂ were analyzed using photoluminescence (PL) spectroscopy, revealing an intense emission peak at 575 nm under 450 nm excitation (⁶H_15/2 → ⁴I_15/2).Normally dysprosium doping results in characteristic emissions in the blue (480 nm), yellow (575 nm), and red (670 nm) regions but this work highlights unexpected single broad emission peak at 575 nm, attributed to the Dy³⁺ incorporation in a low-symmetry local site. Furthermore, Dy³⁺-doped TiO₂ dispersed in ethanol exhibited enhanced photo oxidation under UV–Vis light irradiation, leading to a significant increase in PL intensity. This study provides valuable insights into the luminescence properties of Dy³⁺-doped TiO₂, offering potential applications in imaging, sensing, and pharmaceutics.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"337 ","pages":"Article 126086"},"PeriodicalIF":4.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697247","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}