Journal of Fluorescence最新文献

{"title":"Exploring the Role of Sodium Dodecyl Sulfate Surfactant in Enhancing the Fluorescence Properties of Besifloxacin Fluoroquinolone; Application to Eye Formulations and Artificial Aqueous Humor.","authors":"Islam M Mostafa, Demiana W Fakhry, Mohamed A Abdelshakour, Deena A M Nour El-Deen","doi":"10.1007/s10895-025-04310-1","DOIUrl":"https://doi.org/10.1007/s10895-025-04310-1","url":null,"abstract":"<p><p>An ultrasensitive, selective, rapid, and cost-effective spectrofluorimetric approach is established and validated to quantify the ophthalmic fluoroquinolone antibiotic, besifloxacin (BN), in its ophthalmic preparations and artificial aqueous humor. Unlike previously reported methods that require costly fluorogenic derivatization reagents, lengthy analytical procedures, or expensive instrumentation, the proposed approach offers a simple and highly sensitive alternative method for detecting BN. The suggested method relies on using 2.0% w/v sodium dodecyl sulfate (SDS) as a micellar system in an acetate buffer solution (pH 3.6) to boost the fluorescence intensity of BN at λ_em of 446 nm. The fluorescence intensity of BN was remarkably amplified by around 2.6 folds compared to the BN in acetate buffer without SDS surfactant. The linearity range of the developed method was 5.0-100 ng/mL with detection and quantitation limits of 0.64 and 1.93 ng/mL, respectively. Moreover, the proposed micellar system has been effectively used for the assay of the BN in eye drops and artificial aqueous humor and the achieved percentage recoveries for artificial aqueous humor samples were in the range of 98.82 ± 1.89-103.08 ± 1.60%.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144022113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorescent and Colorimetric Methods for Mercury Sensing: Trends and Applications.","authors":"Duraisamy Udhayakumari","doi":"10.1007/s10895-025-04356-1","DOIUrl":"https://doi.org/10.1007/s10895-025-04356-1","url":null,"abstract":"<p><p>Mercury contamination poses a profound threat to both environmental integrity and human well-being due to its extreme toxicity and strong bioaccumulative properties. Consequently, there is an increasing imperative for detection methodologies that exhibit exceptional sensitivity, selectivity, and efficiency in identifying mercury ions (Hg²⁺) with rapid response times. Among the diverse array of analytical techniques, fluorescent and colorimetric sensors have emerged as highly promising due to their operational simplicity, remarkable sensitivity, and capability for real-time monitoring. This review delves into recent advancements in these sensing modalities, with a particular emphasis on cutting-edge detection mechanisms, nanomaterial-enhanced strategies, and innovative probe architectures. Finally, this review critically examines the prevailing challenges and explores future perspectives for these technologies in pivotal domains such as environmental surveillance, food safety, and biomedical diagnostics.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143994817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review on Chemo Sensors and Fluorosensors for Manganese.","authors":"Shampa Chakraborty, Supratim Halder, Sandipan Halder","doi":"10.1007/s10895-025-04287-x","DOIUrl":"https://doi.org/10.1007/s10895-025-04287-x","url":null,"abstract":"<p><p>Manganese is a trace essential element in human body. Manganese can not be produced in body so the daily intake of manganese sources like shellfish, oysters, brown rice, black tea, Oat meal, black pepper, spinach and other dietary supplements of manganese are important. Manganese sensors are very rare and therefore it is very much important to discuss about all the sensors synthesized for manganese still date.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143969103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UV-Responsive Er-Doped NiAl₂O₄/Mn/GO Nanocomposites: Green Synthesis and Photocatalytic Degradation of Organic Pollutants via Fluorescent Behavior for Water Purification.","authors":"Seyed Ali Hosseini Moradi, Durgham Abdulsattar Oleiwi, Kamran Heydaryan, Sattar H Abed, Farzad Namvar","doi":"10.1007/s10895-025-04357-0","DOIUrl":"https://doi.org/10.1007/s10895-025-04357-0","url":null,"abstract":"<p><p>Synthetic dye-induced water pollution poses considerable environmental challenges, underscoring the urgent demand for novel and sustainable remediation strategies. In this context, the present study introduces an eco-friendly synthesis approach for Er-doped NiAl₂O₄/Mn/GO nanocomposites, employing rhubarb extract as a natural capping agent to enhance the process's sustainability. Various synthesis techniques, including microwave irradiation, co-precipitation, ultrasonic treatment, and hydrothermal processes, were rigorously investigated to determine their impact on the morphological features, physicochemical attributes, and fluorescence behavior of the resulting nanocomposites. Comprehensive characterization was performed using advanced analytical methods such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), and Brunauer-Emmett-Teller (BET) surface area analysis. The photophysical characteristics of the nanocomposites were investigated, emphasizing their fluorescence response under UV irradiation. A band gap value of 3.2 eV highlighted their promising photocatalytic activity under ultraviolet light exposure. The photocatalytic efficiency, assessed against Acid Black 1 dye, demonstrated effective degradation capabilities. Radical scavenger experiments utilizing p-benzoquinone, benzoic acid, and EDTA offered valuable insights into the underlying degradation mechanisms. The ultrasound-assisted synthesis technique exhibited superior photocatalytic efficiency, achieving a remarkable 94.59% degradation of dye within 60 min utilizing 40 mg of the nanocatalyst. These findings underscore the significant potential of Er-doped NiAl₂O₄/Mn/GO nanocomposites, characterized by their enhanced fluorescence properties, as efficient and sustainable photocatalysts for the effective elimination of organic pollutants from wastewater.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143969734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Photoluminescence Properties of Eu³⁺ Doped Ba₃Lu₄O₉ Nanomaterials of High Colour Purity for LEDs Applications.","authors":"Aarti Khatkar, Dinesh Kumar, Rajesh Kumar, Suman Lata","doi":"10.1007/s10895-025-04338-3","DOIUrl":"https://doi.org/10.1007/s10895-025-04338-3","url":null,"abstract":"<p><p>Eu³⁺-doped Ba₃Lu₄O₉ (1-10 mol%) bright red emitters were efficiently produced through an economical solution combustion technique. Phase formation and structural analysis was executed using the obtained specific X-ray diffraction (XRD) patterns. The pure rhombohedral form of Ba₃Lu_3.8Eu_0.2O₉ sample with R3(146) space group was achieved by Rietveld refinement analysis. Field emission scanning electron microscope (FE-SEM) as well as transmission electron microscopy (TEM) provides clustered nature of particles in 60-70 nm range. The energy band-gap of host lattice (4.9 eV) and Ba₃Lu_3.8Eu_0.2O₉ composition (5.50 eV) lie within the semiconductor range enhancing the area of their application. The existence of Ba, Lu, Eu & O elements in optimum composition (5 mol%) was proved via Electron diffraction studies (EDS). Under 396 nm excitation, the dominant transition ⁵D₀ → ⁷F₂ at 621 nm is obtained which is responsible for red luminescence of Eu³⁺ ions. The Judd-Ofelt intensity parameters (Ω₂ and Ω₄) were determined based on the emission intensities corresponding to the ⁵D₀ → ⁷F₂ and ⁵D₀​ → ⁷F₄​ transitions of the europium (III) ion, respectively. Critical distance for energy transmission among nearby Eu³⁺ ions was found to be 13.71 Å. However, the colorimetric values of 5-10 mol% samples are very near to red coordinates (0.6667, 0.3333) of standard NTSC color system, and the values of CCT measured by the emission profiles fall in range of 1918 to 2942 K implying the participation of Eu³⁺ doped nanophosphor in designing warm WLEDs for indoor lighting applications.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144003579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen-Doped Carbon Dots from Borreria Hispida: For Fluorometric Sensing of VO²⁺ Ions and Live Cell Imaging Applications.","authors":"S Shanmuga Priya, S R Suseem","doi":"10.1007/s10895-025-04341-8","DOIUrl":"https://doi.org/10.1007/s10895-025-04341-8","url":null,"abstract":"<p><p>This research presents a straightforward approach to synthesizing advanced nanomaterials derived from the herb Borreria Hispida, focusing on their use in environmental and biological applications. Utilizing a simple hydrothermal process, nitrogen-doped carbon dots were produced from Borreria Hispida and ortho-phenylenediamine. Various analytical techniques such as XRD, TEM, FTIR, CHNS, UV-Vis, and photoluminescence spectroscopy were employed to characterize the carbon dots. The synthesized nanomaterials displayed exceptional water solubility and robust UV light stability, coupled with a high quantum yield of 9%. With particle sizes ranging from 0.5 to 3.5 nm, the carbon dots demonstrated superior sensitivity and selectivity in detecting VO²⁺ ions through a fluorometric sensing mechanism, achieving a detection limit as low as 0.25 µM. The sensing mechanism was based on a binding model where two nitrogen atoms from the carbon dots interact with a single VO²⁺ ion in a 2:1 ratio. Additionally, cytotoxicity tests revealed that the N-CDs significantly inhibited the growth of MCF7 breast cancer cells, with cell viability reaching a maximum of 92%. This research highlights the versatility of N-CDs in both environmental monitoring and biomedical fields.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143983442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring New Azobenzene Type Photoswitches by Machine Learning with Lowest Possible Fluorescence Excitons with Ease of Synthesis.","authors":"Azal S Waheeb, Duha M Hasan, Shaimaa H Mallah, Sajjad H Sumrra, Sadaf Noreen, Ashraf Y Elnaggar, Abrar U Hassan, Islam H El Azab, Hussein A K Kyhoiesh, Mohamed H H Mahmoud","doi":"10.1007/s10895-025-04336-5","DOIUrl":"https://doi.org/10.1007/s10895-025-04336-5","url":null,"abstract":"<p><p>Current investigation presents the design and analysis of 299 azobenzene photoswitches (PSs) for their lowest possible π→ π* transition energies along with their predicted emission maxima values through machine learning (ML) analysis. Their π→ π* transitions related wavelength is calculated by Erying equation to reveal its range up to 256 nm. Their Synthetic Accessibility Likelihood Index (SALI) indicates that a substantial number of them can be synthesized with ease. Among various tested ML model, eXtream Gradient Boosting (XGBoost) regression models demonstrates its high accuracy by achieving an R² value of 0.87. Their designed molecular descriptors show its Maximum Electrotopological State Index (MaxEStateIndex) to impact the model most. For its emission wavelengths, the random forest regression model yields its promising results with its R² of 0.92 and a Mean Squared Error (MSE) of 0.38. Its SHAP value reveals the top contributing descriptors being Estate_VSA5, NumValenceElectrons, Estate_VSA3, Chi0n, Chi1v, PEOE_VSA9, Chi0v, and VSA_Estate2. This work not only expands the library of azobenzene PSs but also enhances their understanding of their electronic properties for their future applications in materials science.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143968194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Perylene-Based Bright Red-Emitting Probe for Wash-Free Cell Plasma Membrane Imaging Via Excimer Formation.","authors":"Mingshu Wu, Yongling Zheng, Ziwen Yan, Junying Ma, Siqi Fan, Enju Wang","doi":"10.1007/s10895-025-04315-w","DOIUrl":"https://doi.org/10.1007/s10895-025-04315-w","url":null,"abstract":"<p><p>Excimer emission exhibits red-shifted, broadened, and large Stokes-shifted characteristics compared to monomeric emission, making it advantageous for biological imaging. In this work, a perylene-based amphiphilic fluorophore (DAVP) was developed for wash-free cell plasma membrane imaging. DAVP readily forms excimer, emitting intense red fluorescence. In water, it shows very weak fluorescence, but its emission intensity significantly increases upon molecular aggregation induced by either increasing concentration or adding THF to aqueous solutions. Notably, DAVP exhibits enhanced fluorescence in cationic and anionic surfactant micelles compared to its aggregated states. Leveraging these properties, DAVP serves as a membrane-specific imaging agent with several distinct advantages: bright red emission, a large Stokes shift, high water solubility, low cytotoxicity, rapid staining, and wash-free capability.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144022761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensitive Optical Detection of Cyanide and Al(III) Ions and Development of a Simple Colourimetric Method for Estimation of Cyanide in Cassava Flour.","authors":"V Dharaniprabha, Kuppanagounder P Elango","doi":"10.1007/s10895-025-04348-1","DOIUrl":"https://doi.org/10.1007/s10895-025-04348-1","url":null,"abstract":"<p><p>This endeavour's novel Schiff base VDP3 is a fruitful candidate for colourimetric/fluorometric detection of cyanide and fluorometric detection of Al(III) ions in a 50% aqua-organic medium. The prompt naked eye colour change (yellow to orange) and noteworthy fluorescence enhancement of VDP3 in the presence of CN^- avowed that VDP3 was an exemplary probe for detecting CN^- with a low detection limit of 0.4 µM. The NMR studies infer that deprotonation followed by nucleophilic addition is the probable sensing mechanism for detecting CN^- by VDP3. The faint fluorescence of VDP3 was owing to the photoinduced electron transfer (PET), and the nucleophilic addition of CN^- intervenes with the PET and consequently enhances the fluorescence significantly. The VDP3 selectively detects Al(III) by forming the chelate octahedral complex [Al(VDP3)(H₂O)₃] as witnessed by the ²⁷Al-NMR, ¹H-NMR, and mass spectral studies with a LOD of 0.14 µM. The striking fluorescent enhancement for VDP3 + Al(III) was ascribed to the collective impacts of PET-CHEF mechanisms (PET-OFF/CHEF-ON). The experimental findings and expected sensing mechanism for detecting CN^- and Al(III) were upheld by the computational studies, and they provide robust evidence for the PET ON and PET OFF mechanisms to explain the fluorescence enhancement behaviour further. The VDP3 was proficiently applied for quantitatively estimating CN^- and Al(III) in real-world samples. Additionally, VDP3 was effectively utilised for the qualitative and quantitative assessment of cyanide in cassava flour through a simple and convenient colourimetric method without any complex instruments.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143995315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Ultrasensitive Fluorimetric Detection of Hg²⁺ Using a Thiourea-Based Chemosensor.","authors":"Sikandar Khan, Mian Muhammad, Eid H Alosaimi, Hamed M Al-Saidi, Jari S Algethami, Mohsen A M Alhamami","doi":"10.1007/s10895-025-04352-5","DOIUrl":"https://doi.org/10.1007/s10895-025-04352-5","url":null,"abstract":"","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143968172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}