Luminescence最新文献

Phytomediated Chitosan-Modified TiO2 NPs for Enhanced Photocatalytic and Potential Application for Breast Cancer Therapy

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-03 DOI: 10.1002/bio.70162

Ankush Chauhan, Rajasekaran Subbarayan, Karthikeyan Ravi, Ritesh Verma, Subha Krishna Rao, Dinesh Murugan Girija, Chandrasekaran Gopalakrishnan, Garima Rana

{"title":"Phytomediated Chitosan-Modified TiO2 NPs for Enhanced Photocatalytic and Potential Application for Breast Cancer Therapy","authors":"Ankush Chauhan, Rajasekaran Subbarayan, Karthikeyan Ravi, Ritesh Verma, Subha Krishna Rao, Dinesh Murugan Girija, Chandrasekaran Gopalakrishnan, Garima Rana","doi":"10.1002/bio.70162","DOIUrl":"https://doi.org/10.1002/bio.70162","url":null,"abstract":"<div>\u0000 \u0000 This work investigates the structural, photocatalytic, and biological properties of Juglans regia leaves extract mediated chitosan-modified TiO2 nanoparticles (NPs) and Juglans regia mediated TiO2 NPs. The structural and morphological analysis conducted using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and FTIR revealed that synthesizing the TiO2 NPs using both chitosan and Juglans regia leaves extract results in lower particle size and less agglomeration in comparison to TiO2 NPs synthesized using only Juglans regia leaves extract. The photocatalytic activity for the degradation of Rhodamine B using phytomediated chitosan-modified TiO2 NPs has a remarkable degradation efficacy of 95.07% when subjected to UV–visible light. Further, phytomediated chitosan-modified TiO2 NPs have ability to reduce the E2 estrogen levels and which inhibits the growth of breast cancer cells (MCF-7) which was confirmed by yeast based XenoScreen XL YES assay, [3H] thymidine incorporation, and apoptosis gene expression (Casp 3 and Casp 9) analysis.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762105","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}

引用次数: 0

Vitamin B6 Cofactor–Derived AIEE Active Luminogen for Detecting Ciprofloxacin and Levofloxacin

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-02 DOI: 10.1002/bio.70163

Dhvani A. Patel, Bigyan R. Jali, Suban K. Sahoo

{"title":"Vitamin B6 Cofactor–Derived AIEE Active Luminogen for Detecting Ciprofloxacin and Levofloxacin","authors":"Dhvani A. Patel, Bigyan R. Jali, Suban K. Sahoo","doi":"10.1002/bio.70163","DOIUrl":"https://doi.org/10.1002/bio.70163","url":null,"abstract":"<div>\u0000 \u0000 The present study reports an aggregation-induced emission enhancement (AIEE) luminogen (AIEEgen) NPL derived by condensing equimolar amount of vitamin B6 cofactor pyridoxal 5′-phosphate (PLP) and 3-hydroxy-2-naphthohydrazide. The AIEE characteristics of NPL was explored in mixed DMSO-HEPES buffer (pH 7.4, 10 mM) medium. The weakly yellow emissive NPL in DMSO turns to cyan emissive NPL as the fractions of HEPES (fHEPES) increased from 10% to 95% in DMSO. The results of dynamic light scattering (DLS) and scanning electron microscope (SEM) analysis supported the formation of self-aggregates of NPL. When the fluorescence spectral changes of AIEEgen NPL (fHEPES 95%, λex = 370 nm, λem = 485 nm) were examined by adding different drugs, the presence of ciprofloxacin and levofloxacin increased the fluorescence intensity of AIEEgen NPL. The changes found in the UV–Vis absorption, DLS, zeta potential and SEM supported the formation of new complex species between AIEEgen NPL and the selective drugs. The detection limits of AIEEgen NPL for ciprofloxacin and levofloxacin were estimated as low as 2.84 and 0.21 μM, respectively. Additionally, the analytical usefulness of AIEEgen NPL was investigated by quantifying ciprofloxacin and levofloxacin in real human blood serum.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749779","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}

引用次数: 0

Pyrogallol-Stabilized Iridium Nanoclusters With Laccase-Like Activity for Dual Mode Detection of 2,4-Dichlorophenol

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-02 DOI: 10.1002/bio.70164

Lin Zhou, Xuan Chen, Zhanghong Guo, Haining Cui, Jinxin Ma, Qijun Song

{"title":"Pyrogallol-Stabilized Iridium Nanoclusters With Laccase-Like Activity for Dual Mode Detection of 2,4-Dichlorophenol","authors":"Lin Zhou, Xuan Chen, Zhanghong Guo, Haining Cui, Jinxin Ma, Qijun Song","doi":"10.1002/bio.70164","DOIUrl":"https://doi.org/10.1002/bio.70164","url":null,"abstract":"<div>\u0000 \u0000 Metal nanoclusters (MNCs) have attracted widespread attention due to their unique subnanometer size, tunable fluorescence emission, and excellent biocompatibility. However, the enzyme-like activity and the optical properties of MNCs are rarely exploited simultaneously. Here, iridium nanoclusters (Py-IrNCs) with excellent fluorescence properties and the laccase-like activity were synthesized by the reduction of IrCl3 with NaBH4 in the presence of pyrogallol. The laccase activity of Py-IrNCs exhibited in the catalytic transformation of 2,4-dichlorophenol (2, 4-DP) is substantially superior to that of natural laccase, which is manifested by the fact that the amount of Py-IrNCs was only 2.5% of natural laccase to achieve the same catalytic performance. In the coexisting of 4-aminoantipyrine (4-AP), a distinct color change and quench of fluorescence were observed; thus, a sensitive colorimetric and fluorescence dual-mode determination of 2,4-DP was achieved with a linear range of 0–40 μM and a limit of detection of 0.5 μM. The dual-mode detections can be mutually verified, which effectively improved the reliability of the analysis, demonstrating a promising application potential of Py-IrNCs in pollutant determination.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749778","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}

引用次数: 0

Failure Mode Effects Analysis and Design of Experiments to Sensitive and Sustainable Microwave-Aided Spectrofluorophotometric Estimation of Teneligliptin and Method's Chlor-Tox Scale and Blue Applicability Grade Index Assessment

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-02 DOI: 10.1002/bio.70156

Pintu Prajapati, Bhumika Prajapati, Anzarul Haque, Sarfaraz Ahmad, Shailesh Shah

{"title":"Failure Mode Effects Analysis and Design of Experiments to Sensitive and Sustainable Microwave-Aided Spectrofluorophotometric Estimation of Teneligliptin and Method's Chlor-Tox Scale and Blue Applicability Grade Index Assessment","authors":"Pintu Prajapati, Bhumika Prajapati, Anzarul Haque, Sarfaraz Ahmad, Shailesh Shah","doi":"10.1002/bio.70156","DOIUrl":"https://doi.org/10.1002/bio.70156","url":null,"abstract":"<div>\u0000 \u0000 Teneligliptin hydrobromide hydrate is efficiently controls blood sugar levels while minimizing the risk of hypoglycemia. Determination of teneligliptin in commercial formulations and biological-fluids has been documented in literature using a plethora of chromatographic, spectrophotometric, and hyphenated methods and they required toxic organic solvents. But, there was no published spectrofluorophotometric technique for teneligliptin estimation. Hence, microwave-aided spectrofluorophotometric method was developed to estimate teneligliptin with using green solvents and 7-chloro-4-nitrobenzoxadiazole as a fluorescent probe. An integrated approach of white analytical chemistry and analytical quality by design was used to estimate teneligliptin in a robust, accurate, and precise manner. The failure mode effect analysis was used to identify the critical analytical method parameters and response variables. The design of experiments was used to carry forward the important analytical method parameters and response variables for response surface modeling. The proposed spectrofluorophotometric method was applied to evaluate commercially available formulations and investigate the pharmacokinetics of teneligliptin–loaded nano-carriers that was developed in-house. The fluorescent product that was derivatized using microwaves was separated and studied using mass spectrometry. After greenness and whiteness profile assessment, researchers discovered that the suggested approach to teneligliptin estimate was eco-friendly, precise, robust, rapid, economical, and easy to apply.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749780","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}

引用次数: 0

Fluorescence Probes Based on Aminoboranes for the Detection of Fluoride Ions and Nitroaromatics: A Bifunctional Fluorescence Detection Platform

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-02 DOI: 10.1002/bio.70159

Ruohan Li, Zhiyuan Chen, Lai Hu, Jinxing Miao, Senqiang Zhu, Rui Liu, Hongjun Zhu

{"title":"Fluorescence Probes Based on Aminoboranes for the Detection of Fluoride Ions and Nitroaromatics: A Bifunctional Fluorescence Detection Platform","authors":"Ruohan Li, Zhiyuan Chen, Lai Hu, Jinxing Miao, Senqiang Zhu, Rui Liu, Hongjun Zhu","doi":"10.1002/bio.70159","DOIUrl":"https://doi.org/10.1002/bio.70159","url":null,"abstract":"<div>\u0000 \u0000 Small-molecule-based fluorescent probes have garnered significant attention because of their excellent optical properties. Among these, multi-stimuli-responsive molecular fluorescent probes have been rapidly developed for their wide range of applications. In this study, we designed a bifunctional fluorescent probe based on three-coordinate boron compounds to detect fluoride ions and 4-nitrophenol. Two compounds NB1 and NB2, containing B-mesityl2 acceptors (A) and nitrogen-containing aromatic donors (D), were confirmed via single-crystal X-ray diffraction. The donor–acceptor (D–A) structure and substantial steric hindrance enable these compounds to exhibit efficient fluorescence emission in both liquid and solid states. Leveraging the properties of three-coordinate boron, these two compounds exhibit a visible and rapid response to fluoride ions, with detection limits of 0.41 μM for NB1 and 1.31 μM for NB2. The detection mechanism was corroborated by 19F NMR and fluorescence emission spectra. Moreover, owing to the D–A B–N unit, both compounds exhibit a significant and rapid response to 4-nitrophenol, resulting from interrupted charge transfer. These compounds serve as fluorescent probes with outstanding bifunctionality, stability, and high efficiency. Given the growing demand for multi-stimuli-responsive fluorescent probes, NB1 and NB2 possess great potential for a wide range of future sensing and detection applications.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749782","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}

引用次数: 0

Synthesis and Characterization of Pure TiO2 and TiO2-Doped Bi2O3 Nanocomposites for Electrochemical Applications

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-02 DOI: 10.1002/bio.70161

S. Synthiya, T. Thilagavathi, R. Uthrakumar, Mir Waqas Alam, K. Kaviyarasu

{"title":"Synthesis and Characterization of Pure TiO2 and TiO2-Doped Bi2O3 Nanocomposites for Electrochemical Applications","authors":"S. Synthiya, T. Thilagavathi, R. Uthrakumar, Mir Waqas Alam, K. Kaviyarasu","doi":"10.1002/bio.70161","DOIUrl":"https://doi.org/10.1002/bio.70161","url":null,"abstract":"To remove toxic wastes from water bodies by using a photocatalyst is the objective of this paper. Chemically, pure TiO2 and TiO2-doped Bi2O3 nanoparticles are synthesized using the low temperature hydrothermal method. The properties of the synthesized nanoparticles were studied using various characterization methods. In addition to powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDAX), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and Fourier transform infrared (FTIR) analyses, we studied the structural and surface morphology of the nanoparticles. By analyzing those data, we can determine the average crystallite size, strain, crystallinity, the molecular composition, the grain size of the nanoparticles, the structure, shape, functional groups, and types of bonds between them. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) analyses were used for electrochemical studies. Based on these data, a study was conducted on charge transfer and specific capacitance. Photoluminescence (PL) and ultra-visible absorbance (UV–vis) spectra were used to determine the optical properties. Based on these spectra, it is possible to determine the optical bandgap of the particles and their potential as photocatalysts. Under a visible light radiation source, pure TiO2 and TiO2-doped Bi2O3 nanocomposites were used in the photocatalytic degradation of malachite green (MG) and Rhodamine-B (RhB) dyes. By studying the observations, we were able to determine the degradation efficiency, as well as the rate constant. Results showed that the TiO2-doped Bi2O3 nanocomposites showed an increase in degradation efficiency of ~0.8% for RhB dye and ~27.7% for MG dye when compared to pure TiO2 nanoparticles.","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bio.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Microwave-Assisted Synthesis of Nitrogen-Doped Carbon Quantum Dots as Fluorescent Nanoprobe for Sensitive Estimation of Tizanidine in Human Urine and Dosage Forms: Application to Content Uniformity Testing

IF 3.2 4区化学

Luminescence Pub Date : 2025-04-01 DOI: 10.1002/bio.70160

Sara Elhak, Yasser El-Shabrawy, Fathalla Belal, Galal Magdy

{"title":"Rapid Microwave-Assisted Synthesis of Nitrogen-Doped Carbon Quantum Dots as Fluorescent Nanoprobe for Sensitive Estimation of Tizanidine in Human Urine and Dosage Forms: Application to Content Uniformity Testing","authors":"Sara Elhak, Yasser El-Shabrawy, Fathalla Belal, Galal Magdy","doi":"10.1002/bio.70160","DOIUrl":"https://doi.org/10.1002/bio.70160","url":null,"abstract":"<div>\u0000 \u0000 This study introduces a novel sensitive and environment-friendly spectrofluorimetric method for determination of an important muscle relaxant drug, tizanidine, with no need for using organic solvents or any pre-derivatization steps. This strategy depends on tizanidine quenching effect on the native fluorescence of newly synthesized nitrogen-doped carbon quantum dots (N-CQDs) from Tetraclinis articulata extract, for the first time, using a microwave-assisted synthetic strategy in only 4 min. Full characterization of the synthesized N-CQDs was performed by different microscopic and spectroscopic techniques. The synthesized N-CQDs showed good fluorescence emission at 380 nm when excited at 312 nm. This method is the first one for tizanidine analysis spectrofluorimetrically using N-CQDs as nanosensors. The developed approach demonstrated good linearity within the range of 0.1–1.0 μg/mL with a correlation coefficient of 0.9997 and a detection limit of 0.024 μg/mL. The developed approach was successfully applied for tizanidine estimation in its tablets and human urine samples with high % recoveries (98.04–101.67) and low %RSD (< 1.5) values. Furthermore, the content uniformity testing of the tizanidine tablets was performed in accordance with the USP guidelines. The method's eco-friendliness was evaluated using AGREE and ComplexGAPI metrics. Validation of the method was performed according to ICHQ2 (R2) guidelines.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749504","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}

引用次数: 0

Eco-Friendly Synthesis of Sugar-Derived Fluorescent Carbon Dots for Metal Ion Sensing, Antioxidant, and Antimicrobial Activities

IF 3.2 4区化学

Luminescence Pub Date : 2025-03-29 DOI: 10.1002/bio.70150

Pacharaphon Khaopueak, Kanaporn Sujarit, Jednipit Borthong, Kanokorn Wechakorn

{"title":"Eco-Friendly Synthesis of Sugar-Derived Fluorescent Carbon Dots for Metal Ion Sensing, Antioxidant, and Antimicrobial Activities","authors":"Pacharaphon Khaopueak, Kanaporn Sujarit, Jednipit Borthong, Kanokorn Wechakorn","doi":"10.1002/bio.70150","DOIUrl":"https://doi.org/10.1002/bio.70150","url":null,"abstract":"<div>\u0000 \u0000 Carbon dots are new zero-dimensional nanomaterials known for their unique properties, such as photoluminescence, low-cost synthesis, and biocompatibility, making them suitable for various applications. Hg2+ and Fe3+, as heavy metal ions that pose significant health and environmental risks, can be effectively detected using carbon dots due to their stable fluorescence properties and surface functional groups. Therefore, this work developed carbon dots derived from sugar (SCDs) using a simple hydrothermal method for sensing metal ions, antioxidant, and antimicrobial applications. SCDs with an 8.9 nm average size demonstrated excellent fluorescence properties and high photostability under UV illumination, visible light, high ionic strength, and different pH conditions. Additionally, SCDs exhibited antioxidant and antimicrobial abilities due to the surface interaction with cell membranes. A paper-based test strip application of SCDs showed effectiveness with low detection limits for metal ion detection. The results suggested that the as-synthesized SCDs could potentially be applied for environmental metal ion monitoring and antimicrobial use.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726923","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}

引用次数: 0

Nuclear Staining and Fluorogenic Probe–Based Evaluation of ROS-Cytotoxic Potential Using AgNPs Synthesized From Cajanus trinervius Against A431 Cell Line

IF 3.2 4区化学

Luminescence Pub Date : 2025-03-29 DOI: 10.1002/bio.70146

Jayanthi Kamalanathan, M. S. Suresh, Venkatesh Rajendran, Mohamad S. AlSalhi, Sandhanasamy Devanesan, Arumugam Suresh, Jerrine Joseph, Shobana Sampath

{"title":"Nuclear Staining and Fluorogenic Probe–Based Evaluation of ROS-Cytotoxic Potential Using AgNPs Synthesized From Cajanus trinervius Against A431 Cell Line","authors":"Jayanthi Kamalanathan, M. S. Suresh, Venkatesh Rajendran, Mohamad S. AlSalhi, Sandhanasamy Devanesan, Arumugam Suresh, Jerrine Joseph, Shobana Sampath","doi":"10.1002/bio.70146","DOIUrl":"https://doi.org/10.1002/bio.70146","url":null,"abstract":"<div>\u0000 \u0000 The purpose of this study was to analyse the probable phytochemical compounds that were in the leaf extract of a shrub known as Cajanus trinervius (CT). We achieved this by using the gas chromatography–mass spectrometry (GC-MS) method in polar solvents like methanol, personal ether and ethanol. We evaluated the crude sample in a variety of solvents and found several distinct chemicals, including phenolics, terpenoids, flavonoids, carbohydrates, amino acids, glycosides, proteins, steroids, tannins and alkaloids. According to the outcomes of the GC-MS analysis, the mediums containing methanol, ethanol and pet ether each included 78, 82 and 38 chemical components, respectively. Sesquiterpenoids, phenolic compounds, amino substances and long-chain hydrocarbons were the most abundant chemicals. The outcomes of the experiment, along with the presence of a variety of phytochemicals in this plant, encouraged us to carry out the microwave synthesis of silver nanoparticles from this leaf extract and analyse them. We used the MTT test on the A431 cell line, to assess the damaging effects of aqueous CT extracts and CT-Ag NPs. Dual and DAPI staining confirmed the apoptotic activity of Cajanus trinervius leaf extract along with their ROS release assessment confirmation by DCFDA staining.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726922","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}

引用次数: 0

Photoluminescence Properties and Concentration Quenching Mechanism of Eu3+-Doped CaLa2Mo4O16 Phosphor for Red-Emitting LED

IF 3.2 4区化学

Luminescence Pub Date : 2025-03-29 DOI: 10.1002/bio.70157

A. S. Khobragade, D. H. Gahane, R. T. Maske, B. V. Tupate, A. N. Yerpude

{"title":"Photoluminescence Properties and Concentration Quenching Mechanism of Eu3+-Doped CaLa2Mo4O16 Phosphor for Red-Emitting LED","authors":"A. S. Khobragade, D. H. Gahane, R. T. Maske, B. V. Tupate, A. N. Yerpude","doi":"10.1002/bio.70157","DOIUrl":"https://doi.org/10.1002/bio.70157","url":null,"abstract":"<div>\u0000 \u0000 The red-emitting Eu3+-activated CaLa2Mo4O16 phosphors have been successfully prepared at 750°C by combustion method, which was reported first time for current work. The structural, morphological, and the photoluminescence characteristics of CaLa2Mo4O16 phosphors were throughout examined. All the phosphor compositions display broad absorption bands due to O → Mo and O → Eu charge transfer (CT) transitions, along with excellent photoluminescence characteristics, including intense electric dipole transitions (7F₀ → 5D₂). The CaLa2Mo4O16:Eu3+ when excited under near UV and blue light, phosphors display intense emission of red color at 617 nm, which ascribes due to the induced electric dipole transition (5D₀ → 7F₂). At 0.5 mol%, the maximum intensity was achieved. Dipole–dipole interaction in Eu3+–Eu3+ ions causes concentration quenching mechanism. According to calculations, the sample color coordinates under 394-nm excitation were (0.586, 0.412) at 592 nm and (0.684, 0.314) at 617 nm, which are quite similar to the normal red values of (0.68, 0.34). Therefore, the synthesized phosphors show potential as red emitters for applications in phosphor-converted red light-emitting diodes.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 4","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726952","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}

引用次数: 0