{"title":"Imino and Benzimidazolinyl Functionalized pyrano[2,3-b] Quinoline as a Dual-Responsive Probe for Detection of Mercury ion and Phosgene.","authors":"Feijun Dan, Qian Tang, Xin Chen, Liang Liu","doi":"10.1007/s10895-024-04052-6","DOIUrl":"https://doi.org/10.1007/s10895-024-04052-6","url":null,"abstract":"<p><p>A dual-responsive probe 8-N, N-diethylamino-3-(1H-benzoimidazol-2-yl)-2H-pyrano[2,3-b]quinoline-2-imino (PQI), pyrano[2,3-b]quinoline as fluorophore, two nitrogen atoms as receptor sites, was developed for the colorimetric and fluorescence detection of Hg<sup>2+</sup> and COCl<sub>2</sub> in different solvents. PQI showed good recognition ability for Hg<sup>2+</sup> via the absorbance decrease, fluorescence quenching by the formation of PQI-Hg<sup>2+</sup> complex in MeOH/H<sub>2</sub>O (4/1, V/V). In addition, PQI could specifically react with COCl<sub>2</sub> via intramolecular cyclization to form a cyclic urea product, which exhibited absorption and fluorescence emission changes, and then realized the detection of COCl<sub>2</sub>. Moreover, the optical responses of PQI to Hg<sup>2+</sup> and COCl<sub>2</sub> featured high selectivity, fast response (within 30 s), and low detection limit (73 nM for Hg<sup>2+</sup> and 25 nM for COCl<sub>2</sub>, respectively). Furthermore, PQI could detect Hg<sup>2+</sup> in real water samples with good recoveries and small relative standard deviations, and could be prepared as a PQI-loaded test strip to monitor gaseous COCl<sub>2</sub> in an in-site, real-time, highly sensitive manner, demonstrating the practicability of PQI in Hg<sup>2+</sup> and gaseous COCl<sub>2</sub> detection.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143189170","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":"Ultrasensitive and Selective Nitrogen-Doped Fluorescent Carbon Dots Probe for Quantification Analysis of Trace Cu<sup>2+</sup> in the Aqueous Environment.","authors":"Zhenning Lou, Xinyu Zhou, Xiaomai Hao, Fan Yang, Wei Zhang, Xiaogeng Feng, Haibiao Yu, Junshuo Cui, Jing Gao, Ying Xiong, Yongfu Lian","doi":"10.1007/s10895-025-04160-x","DOIUrl":"https://doi.org/10.1007/s10895-025-04160-x","url":null,"abstract":"<p><p>As a typical non-ferrous metal, copper is heavily used in the manufacturing and chemical industries. Copper pollution has been demonstrated to have a significant detrimental impact on the natural environment, as well as causing irreparable damage to the human body, such as elevated Cu<sup>2+</sup> levels have been identified as a factor in the pathogenesis of AD (Alzheimer's disease). In this study, novel nanoscale carbon dots Blue-CDs (B-CDs) were obtained by the solvothermal approach in formamide solution utilizing citric acid as the carbon source and ethylenediamine as the nitrogen dopant. The particle size of B-CD was assessed to be 2.17 nm, with a quantum yield (QY) of 10.28%. The B-CDs were found to be extinguished upon exposure to Cu<sup>2+</sup>, which exhibited a good fluorescence detection linear relationship within the concentration range of 0.25-10.0 µM Cu<sup>2+</sup>, showing a limit of detection (LOD) is 0.18 µM. B-CDs have been effectively used for the measurement of Cu<sup>2+</sup> in actual aqueous systems. It is due to the chemical reactions that take place among the B-CDs and the Cu²⁺ that make the sensor highly sensitivities and highly selectivities. The results of the experiment demonstrate that the fluorescence quenching process is a consequence of Cu<sup>2+</sup> binding to the amino groups of carbon dots, forming complexes via a non-radiative photoinduced electron transfer process. In conclusion, the described simple sensing techniques could be effectively utilized as monitoring tools for Cu<sup>2+</sup> in environmental waters.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080274","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}
Adeeba Sadia, Muhammad Irshad, Muhammad Faran Akhtar, Shaukat Ali, Muhammad Summer
{"title":"Graphene-Based Multi-Nanocomposites: Synthesis, Characterization and Photodegradation Analysis.","authors":"Adeeba Sadia, Muhammad Irshad, Muhammad Faran Akhtar, Shaukat Ali, Muhammad Summer","doi":"10.1007/s10895-025-04136-x","DOIUrl":"10.1007/s10895-025-04136-x","url":null,"abstract":"<p><p>In this study, Hummer's method was modified to synthesize graphene oxide (GO). GO-based nanocomposites GO/ZnO, GO/MoO<sub>3</sub>, and GO/ZnO/MoO<sub>3</sub> were synthesized using co-precipitation and solid-state reaction methods. The prepared GO and nanocomposites were characterized using UV-Visible spectroscopy, scanning electron microscopy (SEM), Raman spectroscopy, and X-ray diffraction (XRD). SEM images showed distinct morphological differences among GO, GO/ZnO, and GO/MoO<sub>3</sub>, while UV-Visible and Raman spectroscopy demonstrated the influence of ZnO and MoO<sub>3</sub> on the optical properties and interactions of GO. Using visible light irradiation, photocatalytic degradation studies showed improved results for the GO/MoO<sub>3</sub> nanocomposites. The 93% degradation of methylene blue (MB) achieved by GO/MoO<sub>3</sub> after 280 minutes was greater than that of GO/ZnO/MoO<sub>3</sub> (92% degradation at 360 minutes) and GO/ZnO (93% degradation at 340 minutes) within the same period. High efficiency photodegradation of methylene blue (MB) under visible light irradiation of GO/MoO<sub>3</sub> nanocomposites were shown by these findings, demonstrating their strong potential for environmental remediation applications.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080266","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":"Cytotoxicity Profile of Schiff Base Organotin(IV) Complexes: Experimental and Theoretical Approach.","authors":"Manpreet Kaur, Kritika Sood, Veeranna Yempally, Harminder Kaur","doi":"10.1007/s10895-025-04146-9","DOIUrl":"https://doi.org/10.1007/s10895-025-04146-9","url":null,"abstract":"<p><p>Present work deals with the synthesis, characterization and biological investigation of Schiff base ((E)N'(2,3-dihydroxybenzylidene)isonicotinohydrazide (L)) and its diorganotin(IV) complexes (R<sub>2</sub>SnL, diphenyltin(IV) complex R = Ph (1), dimethyltin(IV) complex R = Me(2))by experimental and theoretical approach. All the complexes were characterized by spectroscopic techniques including FTIR, multinuclear NMR and theoretical studies. Theoretical calculations were carried out using Gaussian 09 software which also supports the experimental analysis. Molecular docking studies using Autodock software were carried out to predict the binding pose and affinity of the complexes towards particular proteins. DNA binding studies by UV titrations and in-silico studies showed the superior binding of diphenyltin(IV) complex (1) and dimethyltin(IV) complex (2) in an intercalative mode. In- vitro cytotoxicity analysis of L and its complexes (1, 2) was carried out against two cancer cell lines using MTT assay. Diphenyltin(IV) complex (1) was more potent and cytotoxic against studied cancer cell lines i.e.C6 Glioblastoma cells and SH-SY5Y Neuroblastoma cells.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143074809","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 Novel Rhodamine Functionalized Schiff Base Type Ratiometric Fluorescent Chemosensor for the Sensing of Hg<sup>2+</sup> Ions; Experimental and Theoretical Approach.","authors":"Sushree Suman Dash, Patitapaban Mohanty, Pravin Kumar Kar, Renjith Bhaskaran","doi":"10.1007/s10895-024-04132-7","DOIUrl":"https://doi.org/10.1007/s10895-024-04132-7","url":null,"abstract":"<p><p>A new Rhodamine functionalised Schiff Base sensor 3',6'-bis(diethylamino)-2-((4-hydroxybenzylidene)amino)spiro[isoindoline-1,9'-xanthen]-3-one (SBRB1) was designed and synthesized. The recognition ability of sensor SBRB1 towards Hg<sup>2+</sup> was studied by using UV-Vis and fluorescence spectroscopy. The fluorescence results showed that the sensor SBRB1 has specific selectivity as well as sensitivity towards Hg<sup>2+</sup> among other competitive metal ions as the fluorescence intensity at 479 nm quenched only in the presence of Hg<sup>2+</sup>. This sensitivity towards Hg<sup>2+</sup> was due to the chelation between ligand and Hg<sup>2+</sup>. From the fluorescence titration the binding constant and detection limit of SBRB1:Hg<sup>2+</sup> complex were calculated and found to be 5.114 <math><mrow><mspace></mspace> <mo>×</mo> <mspace></mspace></mrow> </math> 10<sup>6</sup> M<sup>-1</sup> and 2.91 <math><mrow><mspace></mspace> <mo>×</mo> <mspace></mspace></mrow> </math> 10<sup>-5</sup> M respectively. It showed The 1:1 complexation between SBRB1 and Hg<sup>2+</sup> which was conformed from the DFT and TD-DFT study of SBRB1 in both solvent and gas phase.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065991","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":"Nanoparticles-Based Optical Chemosensors for Lead Acetate Sensing in Water: ZnO, Zn<sub>0.97</sub>Ce<sub>0.03</sub>O, and Zn<sub>0.97</sub>Nd<sub>0.03</sub>O.","authors":"Mai M El-Masry, Ashraf M Abd ELwahab, M M Arman","doi":"10.1007/s10895-024-04096-8","DOIUrl":"https://doi.org/10.1007/s10895-024-04096-8","url":null,"abstract":"<p><p>This study reports the synthesis, characterization, and optical properties of ZnO, Zn<sub>0.97</sub>Ce<sub>0.03</sub>O, and Zn<sub>0.97</sub>Nd<sub>0.03</sub>O nanoparticles and their interactions with lead acetate solutions. X-ray diffraction (XRD) confirmed that the nanoparticles were synthesized in a single-phase hexagonal structure, with crystallite sizes of 12.48 nm, 50.79 nm, and 39.00 nm, respectively. Doping ZnO with Ce and Nd ions significantly enhanced its paramagnetic properties, as evidenced by squareness ratios of 11.18 × 10<sup>-3</sup>, 41.60, and 20.25 for ZnO, Zn<sub>0.97</sub>Ce<sub>0.03</sub>O, and Zn<sub>0.97</sub>Nd<sub>0.03</sub>O, respectively. UV-Vis absorption spectra revealed a redshift in lead acetate upon interaction with ZnO, indicating the formation of new chemical species. Ce and Nd doping further modified the optical properties by introducing additional absorption peaks and altering spectral profiles. Significant enhancement in photoluminescence (PL) intensity is observed due to the addition of ZnO, Zn<sub>0.97</sub>Ce<sub>0.03</sub>O, and Zn<sub>0.97</sub>Nd<sub>0.03</sub>O nanoparticles, as compared to the pure PbC<sub>2</sub>H<sub>3</sub>O<sub>2</sub> solution across various concentrations. The incorporation of ZnO nanoparticles increases the PL intensity by approximately tenfold (from 13 to over 100 a.u.). Similarly, Zn<sub>0.97</sub>Ce<sub>0.03</sub>O exhibits a comparable level of enhancement. Notably, the introduction of Zn<sub>0.97</sub>Nd<sub>0.03</sub>O nanoparticles achieves a remarkable 100-fold increase in PL intensity, establishing it as a highly effective material for detecting lead contamination in water. This exceptional performance highlights its potential for environmental monitoring and water quality applications. These results highlight the potential of ZnO, Zn<sub>0.97</sub>Ce<sub>0.03</sub>O, and Zn<sub>0.97</sub>Nd<sub>0.03</sub>O nanoparticles as sensitive and effective chemosensors for detecting trace lead levels in environmental samples.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065903","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}
Mervate M Mohamed, Raiedhah A Alsaiari, Abbas M Abbas, Gasser M Khairy
{"title":"High-Sensitivity Fluorescent Sensing Platform for Rapid and Selective Detection of Chlorpyrifos Pesticide in Water Samples Using Terbium-Isatin-3-allyl Complex.","authors":"Mervate M Mohamed, Raiedhah A Alsaiari, Abbas M Abbas, Gasser M Khairy","doi":"10.1007/s10895-024-04101-0","DOIUrl":"https://doi.org/10.1007/s10895-024-04101-0","url":null,"abstract":"<p><p>The detection of organophosphorus pesticides, particularly chlorpyrifos, in environmental samples is essential due to their widespread use and associated health risks. In this study, we developed a high-sensitivity fluorescent sensing platform utilizing an Isatin-3-allyl-terbium (IS-Tb) complex in solution for the rapid and selective detection of chlorpyrifos in various water samples. The proposed chemical structure of the complex in solution was evaluated using molar ratio method. The IS-Tb complex was characterized in solution, as it was not isolated in the solid state. To assess its structural and optical properties, several characterization techniques were employed. UV-Vis spectrophotometry was used to evaluate the absorption characteristics, and spectrofluorimetry was applied to assess the fluorescence properties. Additionally, the stoichiometry of the complex was determined using the molar ratio method, which confirmed a 1:1 ligand-to-metal ratio and provided the optimal conditions for sensing chlorpyrifos. The IS-Tb complex exhibited weak intrinsic fluorescence, which was significantly enhanced upon interaction with chlorpyrifos, enabling sensitive and quantitative analysis. Methanol was identified as the best solvent for maximizing the sensitivity of chlorpyrifos detection. The sensor demonstrated a wide linear detection range from 0.006 to 28 µg/L, with a low limit of detection (LOD) of 2 ng/L. The sensor's selectivity for chlorpyrifos over other commonly encountered pesticides (13 organophosphorus) and environmental contaminants was high, ensuring minimal interference. The performance of the sensor was validated using spiked water samples, yielding an average recovery of 101% with a relative standard deviation (RSD) of less than 5%. These results suggest that the proposed sensing platform is a powerful tool for the environmental monitoring of chlorpyrifos, with significant implications for public health protection and regulatory compliance.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143032846","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 Properties of Mesalazine-Loaded Hydrogel Nanocomposites for the Treatment of Ulcerative Colitis.","authors":"Caidi Zhao, Wei Wu","doi":"10.1007/s10895-024-04134-5","DOIUrl":"https://doi.org/10.1007/s10895-024-04134-5","url":null,"abstract":"<p><p>This study synthesizes a novel three-dimensional (3D) porous coordination polymer (CP), {[Co(L)₀.₅(H₂O)]·NMP·H₂O}<sub>n</sub> (1), via a solvothermal method in a mixed solvent of water and NMP (1-methyl-2-pyrrolidinone), reacting Co(II) ions with H₄L (1,4-bis(5,6-carboxybenzimidazolylmethyl)benzene). The CP exhibits unique fluorescence properties, emitting at 420 nm under UV light excitation at 350 nm, and serves as a carrier for Mesalazine (MSZ) in therapeutic applications. To enhance biocompatibility, MSZ-loaded fluorescent metal particles were encapsulated with chitosan (CMCS) and hyaluronic acid (HA), forming a bio-friendly drug delivery system, HA/CMCS-CP1@MSZ. The system was extensively characterized, confirming its stability and fluorescence properties, which facilitate drug tracking and controlled release. In vitro tests in ulcerative colitis (UC) models demonstrated that the HA/CMCS-CP1@MSZ system significantly reduced LPS-induced TNF-α and IL-6 levels, indicating its potential to effectively downregulate UC-associated inflammatory factors and be developed as a clinical treatment for UC. Furthermore, the fluorescence sensitivity of the system was explored, revealing its broad application potential beyond Fe³⁺ sensing, including drug release monitoring and tracking biological processes. This feature not only supports UC treatment but also presents new possibilities for iron ion monitoring in various iron metabolism-related diseases, such as anemia and cancer. Molecular docking simulations suggest that the carboxyl functional groups on the cobalt metal complex play a crucial role in the bioactivity, while the benzimidazole groups, serving as ligands, have a minimal direct impact on the bioactivity.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143023702","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":"Noval Anthraquinone Based Receptor for the Selective Detection of Acetate and Hypochlorite Ion With Relay Recognition With the applications of Real Sample Analysis and Bio-Imaging.","authors":"Ganesan Punithakumari, Arumugam Prabakaran, Chinnakkannu Karikal Chozhan, Ponnaiyan Pramila","doi":"10.1007/s10895-024-04133-6","DOIUrl":"https://doi.org/10.1007/s10895-024-04133-6","url":null,"abstract":"<p><p>By a simple condensation reaction, the receptor with anthraquinone moiety was synthesized and its sensing properties were explored in the anion sensing studies via colorimetric, UV-vis studies, fluorescence studies, and DFT calculations. The synthesized receptor senses both acetate and hypochlorite ions in DMSO medium. By the addition of all anions into the receptor the colour change was observed from pink to light purple colour for acetate ion and pink to light blue for hypochlorite ion. Furthermore, on relay recognition the acetate ion, when senses the Cr<sup>3+</sup> ion, it shows an excellent answer which changes its light purple color to pink which is same as the receptor, while no colour change was observed for other ions. Acetate and hypochlorite ions show very low detection limit with receptor as 1.8 × 10<sup>-7</sup> M and 3.8 × 10<sup>-7</sup> M respectively. By understanding the sensing mechanism, the DFT calculation was performed for both AcO<sup>-</sup> and ClO<sup>-</sup> ions. Additionally, receptors were effectively utilized in the preparation of optical sensors supported by silica gel for the detection of AcO<sup>-</sup> and ClO<sup>-</sup> ions. Real-life application was carried out by sensing AcO - in vinegar and ClO - ions in ala. Thus, the receptor proved itself as a potentially useful for real-life application and bio-imaging studies.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143006685","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}
Nakka Praveenkumar, K V Madhuri, D V Krishna Reddy, M Rami Reddy
{"title":"A Study of Structural, Optical and Photoluminescence Properties of Pr<sup>3+</sup> Ions Doped Sodium Bismuth Borosilicate Glasses.","authors":"Nakka Praveenkumar, K V Madhuri, D V Krishna Reddy, M Rami Reddy","doi":"10.1007/s10895-024-04090-0","DOIUrl":"https://doi.org/10.1007/s10895-024-04090-0","url":null,"abstract":"<p><p>In this work, the conventional melt quenching approach is used to synthesize the Pr<sup>3+</sup> doped NaF-Bi<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (NBBS) glasses. The influence of Pr<sup>3+</sup> ions on their spectroscopic and structural characteristics in glass network is investigated. The amorphous nature of the samples has been amply verified by X-ray diffraction patterns. FTIR spectra show distinct basic vibrational bands in borate and silicate structural components (in the range from 500 to 3750 cm<sup>- 1</sup>). In the UV-visible range, the absorption spectra showed four Pr<sup>3+</sup> ion absorption bands. Furthermore, in the absorption spectra, four Pr<sup>3+</sup> ion absorption bands were observed in the NIR regions (1300-2470 nm). While utilizing Tauc plots to assess optical bandgap (Eg), it is observed that as the concentration of Pr<sup>3+</sup> increases from 0 mol% to 1.5 mol%, the bandgap decreases from 3.67 eV to 3.50 eV. In luminescence spectra, seven bands can be observed at about 483, 524, 534, 580, 604, 643, and 682 nm as a consequence of Pr<sup>3+</sup> ion transitions. Strong variations in the emission band's intensity are seen at around 604 nm (<sup>3</sup>P<sub>0</sub>→<sup>3</sup>H<sub>6</sub>), after a progressive increase in Pr mol% in the glass matrix. According to CIE coordinates, emission changes from orange to reddish-orange as the quantity of Pr<sup>3+</sup> ions rises.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143006623","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}