Luminescence最新文献

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Effects of Various Annealing on the Thermoluminescence Behavior of Hexagonal Boron Nitride: A Group III–Nitride Semiconductor 不同退火工艺对六方氮化硼:A族氮化半导体热释光行为的影响
IF 3 4区 化学
Luminescence Pub Date : 2025-08-31 DOI: 10.1002/bio.70298
Muhammed Hatib, Huseyin Toktamis
{"title":"Effects of Various Annealing on the Thermoluminescence Behavior of Hexagonal Boron Nitride: A Group III–Nitride Semiconductor","authors":"Muhammed Hatib,&nbsp;Huseyin Toktamis","doi":"10.1002/bio.70298","DOIUrl":"10.1002/bio.70298","url":null,"abstract":"<p>This study investigated the effects of different annealing methods on the dosimetric properties of the Group III–nitride semiconductor hexagonal boron nitride (h-BN) to get the optimal annealing corresponding to an ideal thermoluminescence (TL) glow curve. Two distinct annealing methods were applied to 15 powder samples. The first technique involved modulating the temperature within the range of 200°C to 1000°C while keeping the duration fixed at 30 min. In contrast, the second approach varied the annealing duration between 1 and 120 min while maintaining a constant temperature of 900°C. The resultant TL glow curves displayed two distinct dosimetric peaks at 160°C and 255°C for annealing temperatures between 600°C and 900°C and durations ranging from 1 to 30 min. Nevertheless, at elevated annealing temperatures and extended durations, an additional shallow peak was identified at approximately 85°C. A comparative evaluation of the findings revealed that optimal TL performance is attained at 900°C for 30 min, supplemented by an additional storage period of 10 min to mitigate the impact of the shallow peak. Moreover, SEM and XRD analysis showed a more stable and homogeneous microstructure under this process.</p>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/epdf/10.1002/bio.70298","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923784","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
Calcium Vacancy Generated Luminescence Improvement of the Ca3Sc2Si3O12:Ce3+ Phosphor for WLED 钙空位对WLED用Ca3Sc2Si3O12:Ce3+荧光粉发光性能的改善
IF 3 4区 化学
Luminescence Pub Date : 2025-08-29 DOI: 10.1002/bio.70304
Yue Guo, Yingkai Fu, Chaohui Zhang, Jiaqi Sun, Minjie Zhao, Yuanxiang Gao, Chenyu Hu, Zhenxing Cao, Xu Qian, Quan Liu
{"title":"Calcium Vacancy Generated Luminescence Improvement of the Ca3Sc2Si3O12:Ce3+ Phosphor for WLED","authors":"Yue Guo,&nbsp;Yingkai Fu,&nbsp;Chaohui Zhang,&nbsp;Jiaqi Sun,&nbsp;Minjie Zhao,&nbsp;Yuanxiang Gao,&nbsp;Chenyu Hu,&nbsp;Zhenxing Cao,&nbsp;Xu Qian,&nbsp;Quan Liu","doi":"10.1002/bio.70304","DOIUrl":"10.1002/bio.70304","url":null,"abstract":"<div>\u0000 \u0000 <p>Phosphors with high efficiency and excellent thermal stability for solid-state lighting have kept catching researchers' attention. Herein, a series of Ca<sub>3</sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>:Ce<sup>3+</sup> cyan-emitting phosphors are synthesized, and calcium vacancy is introduced into the lattice to improve emission and thermal stability. Detailed structure information is studied via X-ray diffraction and X-ray photoelectron spectroscopy to obtain the effect of Ca vacancy on the lattice structure. Absorption spectra and photoluminescence spectra of the phosphors are measured to confirm the enhanced emission of Ca<sub>3</sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>:Ce<sup>3+</sup> phosphors via Ca vacancy engineering. Optimized phosphor Ca<sub>2.59</sub>Ce<sub>0.01</sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> exhibits high quantum efficiency (89.4%) and maintains 84.6% of its room-temperature emission intensity at 423 K. Optimized phosphor Ca<sub>2.59</sub>Ce<sub>0.01</sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> is mixed with orange phosphor to fabricate white light-emitting diode (WLED) with blue chip. All the information confirms the promising application prospects of this cyan-emitting phosphor in high-quality WLED.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144918820","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 Simultaneous Quantification of Domperidone and Safinamide by Spectral Resolution using deconvoluted Synchronous Fluorescence: Application to Spiked Human Plasma 反卷积同步荧光光谱分辨率同时定量多潘立酮和沙芬酰胺:在加标人血浆中的应用
IF 3 4区 化学
Luminescence Pub Date : 2025-08-28 DOI: 10.1002/bio.70294
Ebraam B. Kamel, Omar M El-Abassy, Mohamed A. Hasan, Israa M. Nour, Mohamed Badrawy
{"title":"Eco-Friendly Simultaneous Quantification of Domperidone and Safinamide by Spectral Resolution using deconvoluted Synchronous Fluorescence: Application to Spiked Human Plasma","authors":"Ebraam B. Kamel,&nbsp;Omar M El-Abassy,&nbsp;Mohamed A. Hasan,&nbsp;Israa M. Nour,&nbsp;Mohamed Badrawy","doi":"10.1002/bio.70294","DOIUrl":"10.1002/bio.70294","url":null,"abstract":"<div>\u0000 \u0000 <p>A novel, eco-friendly deconvoluted synchronous spectrofluorimetric method has been developed and validated for the simultaneous determination of domperidone (DOM) and safinamide (SAF), a potential combination used to address Parkinson's disease–associated gastrointestinal dysfunction. Their combined administration necessitates a reliable analytical method for therapeutic monitoring and formulation quality control. Traditional spectrofluorimetric techniques fail to resolve the significant spectral overlap between these two compounds. In this study, a deconvoluted synchronous spectrofluorimetric method, using Fourier self-deconvolution at Δλ = 30 nm, successfully resolved the overlapping fluorescence spectra without any need for physical separation. It showed excellent linearity (DOM: 10–1500 ng/mL, SAF: 50–2000 ng/mL), with low LOD (2.75 ng/mL for DOM and 11.77 ng/mL for SAF), high recovery rates in both pharmaceutical forms and spiked human plasma (above 90%), and outstanding selectivity and robustness. Sustainability of the current method was assessed using spider chart measure, green solvent selection tool, Analytical GREEnness Metric, Modified Green Analytical Procedure index, and Blue Applicability Grade Index. The proposed technique represents a simple, sensitive, and sustainable tool for routine analysis of this therapeutically significant drug pair.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144910351","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
Ratiometric Fluorescence Detection of Piceatannol With Fluorescent Eu-MOF and MnO2 Nanosheets 荧光Eu-MOF和MnO2纳米片比例荧光检测皮杉酚
IF 3 4区 化学
Luminescence Pub Date : 2025-08-27 DOI: 10.1002/bio.70299
Lili Wang, Ronglin Chen, Shufei Huang, Weihua Huang, Huifeng Xu, Xiao Hu, Lishuang Yu
{"title":"Ratiometric Fluorescence Detection of Piceatannol With Fluorescent Eu-MOF and MnO2 Nanosheets","authors":"Lili Wang,&nbsp;Ronglin Chen,&nbsp;Shufei Huang,&nbsp;Weihua Huang,&nbsp;Huifeng Xu,&nbsp;Xiao Hu,&nbsp;Lishuang Yu","doi":"10.1002/bio.70299","DOIUrl":"10.1002/bio.70299","url":null,"abstract":"<div>\u0000 \u0000 <p>Eu-MOF with rhomboid structure and strong fluorescence was successfully synthesized in this work. By combining fluorescent Eu-MOF with peroxidase mimic MnO<sub>2</sub> nanosheets, a novel ratiometric fluorescence sensing method was developed for the sensitive detection of piceatannol (PCT), a naturally occurring stilbene-type polyphenolic compound. The sensing mechanism relies on the strong antioxidant ability of PCT, which reductively decomposes MnO<sub>2</sub> nanosheets into Mn<sup>2+</sup> and results in the attenuation of the fluorescence intensity of the o-phenylenediamine (OPD) oxidation product and the concomitant recovery of Eu-MOF fluorescence. Consequently, the ratio of fluorescence intensity at two distinct wavelengths is changed with the varying of PCT concentrations, facilitating the sensitive detection of PCT. The results showed that the fluorescence intensity ratio (F<sub>430</sub>/F<sub>560</sub>) exhibited a linear relationship with the concentration of PCT within the range of 0.125–6.25 μM, with an actual detection limit of 0.05 μM. The method was successfully applied to the detection of PCT concentration in the extracellular fluid of RAW 264.7 cells and is expected to provide a promising approach for monitoring the pharmacokinetics of PCT.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144910374","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
Luminescent BaWO4:Dy3+ Nanoparticles for Detection of Pb2+ and Fe3+ Ions in Aqueous Solution 发光纳米BaWO4:Dy3+用于检测水溶液中Pb2+和Fe3+离子
IF 3 4区 化学
Luminescence Pub Date : 2025-08-27 DOI: 10.1002/bio.70302
Parau Majhi, Rajkumari Bindiya Devi, Ningombam Yaiphaiba, Satyanarayan Sahoo, Ganngam Phaomei
{"title":"Luminescent BaWO4:Dy3+ Nanoparticles for Detection of Pb2+ and Fe3+ Ions in Aqueous Solution","authors":"Parau Majhi,&nbsp;Rajkumari Bindiya Devi,&nbsp;Ningombam Yaiphaiba,&nbsp;Satyanarayan Sahoo,&nbsp;Ganngam Phaomei","doi":"10.1002/bio.70302","DOIUrl":"10.1002/bio.70302","url":null,"abstract":"<div>\u0000 \u0000 <p>BaWO<sub>4</sub>:Dy<sup>3+</sup> nanoparticles and BaWO<sub>4</sub>:Dy<sup>3+</sup> co-doped Pb<sup>2+</sup> nanoparticles were successfully synthesized via a solvothermal method at 140°C for 24 h, employing dimethyl sulfoxide (DMSO) as the solvent. From the x-ray diffraction (XRD) study, the prepared nanoparticles show a tetragonal system. The BaWO<sub>4</sub>:Dy<sup>3+</sup> nanoparticles exhibited strong luminescent behavior, which was significantly enhanced by a factor of two to three upon co-doping with Pb<sup>2+</sup> ions. This enhancement is attributed to efficient energy transfer from Pb<sup>2+</sup> to Dy<sup>3+</sup> ions within the host lattice. Importantly, the BaWO<sub>4</sub>:Dy<sup>3+</sup> nanoparticles demonstrated selective luminescence enhancement in response to Pb<sup>2+</sup> ions in aqueous media, whereas the BaWO<sub>4</sub>:Dy<sup>3+</sup> co-doped Pb<sup>2+</sup> nanoparticles exhibited more luminescence quenching upon exposure to Fe<sup>3+</sup> ions. These findings highlight the potential of BaWO<sub>4</sub>:Dy<sup>3+</sup> and BaWO<sub>4</sub>:Dy<sup>3+</sup> co-doped Pb<sup>2+</sup> nanoparticles as effective probes for the selective detection of Pb<sup>2+</sup> and Fe<sup>3+</sup> ions, respectively, in water-based environments.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144910375","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
Spectroscopic Analysis and Energy Transfer From Synthesized AgInS2 Nanoparticles to Cresyl Violet Dye 合成AgInS2纳米粒子到甲酚紫染料的光谱分析和能量转移
IF 3 4区 化学
Luminescence Pub Date : 2025-08-26 DOI: 10.1002/bio.70281
Altafhusain, M. S. Sannaikar, Dharmendra Pratap Singh, Sanjeev R. Inamdar
{"title":"Spectroscopic Analysis and Energy Transfer From Synthesized AgInS2 Nanoparticles to Cresyl Violet Dye","authors":"Altafhusain,&nbsp;M. S. Sannaikar,&nbsp;Dharmendra Pratap Singh,&nbsp;Sanjeev R. Inamdar","doi":"10.1002/bio.70281","DOIUrl":"10.1002/bio.70281","url":null,"abstract":"<div>\u0000 \u0000 <p>Synthesis of <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mtext>AgInS</mtext>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {AgInS}_2 $$</annotation>\u0000 </semantics></math> (AIS) nanoparticles and spectroscopic investigation of energy transfer phenomena are described. Powder XRD identified broad diffraction peaks that are consistent with the tetragonal chalcopyrite phase of <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mtext>AgInS</mtext>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {AgInS}_2 $$</annotation>\u0000 </semantics></math> NPs. Tetragonal structure was confirmed by the interplanar spacing indices and peak positions, with a shift in XRD peaks, indicating reduced lattice parameters due to increased <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mtext>In</mtext>\u0000 <mrow>\u0000 <mn>3</mn>\u0000 <mo>+</mo>\u0000 </mrow>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$$ {In}^{3+} $$</annotation>\u0000 </semantics></math> concentration. FTIR spectra reveal changes in bonding between glutathione (GSH) and AIS NPs due to the role of GSH as a reducing and capping agent. Total reflection X-ray fluorescence (TXRF) spectroscopy identified the presence of Ag and In elements. Zeta potential measurements indicated mean values of 54.8, −28.5, and −13.2 mV, respectively, for AIS-1, AIS-2, and AIS-3 NPs dispersed in water. Higher zeta potential values suggested greater electrostatic repulsion between particles, enhancing dispersion and stability of the colloidal system. Fluorescence investigations revealed how Ag:In ratio influences emission characteristics and energy transfer mechanisms, with FRET being notably influential.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905655","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
Central Composite Design Assisted Spectrofluorimetric Determination of Solifenacin via Quenching of Acid Red 51: Application in Pharmaceutical Formulations and Plasma 中心复合设计辅助荧光光谱法测定酸性红51在制剂和血浆中的应用
IF 3 4区 化学
Luminescence Pub Date : 2025-08-26 DOI: 10.1002/bio.70296
Ali Alqahtani, Taha Alqahtani, Adil Alshehri, Ahmed A. Almrasy
{"title":"Central Composite Design Assisted Spectrofluorimetric Determination of Solifenacin via Quenching of Acid Red 51: Application in Pharmaceutical Formulations and Plasma","authors":"Ali Alqahtani,&nbsp;Taha Alqahtani,&nbsp;Adil Alshehri,&nbsp;Ahmed A. Almrasy","doi":"10.1002/bio.70296","DOIUrl":"10.1002/bio.70296","url":null,"abstract":"<div>\u0000 \u0000 <p>This study describes the development and validation of a novel photochemical sensing platform based on the fluorescence quenching mechanism between acid red 51 (AR51) and solifenacin succinate (SLF). Upon excitation at 530 nm, AR51 exhibits native fluorescence at 554 nm, which undergoes significant quenching in the presence of SLF through ion pair complex formation. The photophysical interaction was characterized by Stern–Volmer analysis, revealing a quenching constant of 1.44 × 10<sup>5</sup> mol/L<sup>−1</sup>, indicative of a static quenching mechanism. Job's plot confirmed a 1:1 stoichiometric ratio between AR51 and SLF. A central composite design optimized the experimental conditions affecting the photochemical interaction, with buffer pH, buffer volume, and AR51 concentration identified as critical parameters. Under optimized conditions (acetate buffer pH 4.2, 1.1 mL buffer volume, 1.1 mL AR51 solution), the method demonstrated linearity in the concentration range of 0.2 to 44 μg/mL with detection and quantification limits of 0.0554 and 0.1678 μg/mL, respectively. The developed sensor was successfully applied for SLF determination in pharmaceutical formulations and human plasma samples with recovery rates of 99.77% and 99.01%, respectively, offering advantages over conventional methods by operating at longer wavelengths, thereby minimizing interference from endogenous fluorophores.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905245","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
Spectrofluorimetric Method for the Assay of Fixed-Dose Combinations Containing Olmesartan: Sustainability Assessment via Novel Relative Ranking NQS Index, GSST, and Whiteness R3GB 12 Model 含奥美沙坦固定剂量组合测定的荧光光谱法:基于NQS指数、GSST和白度R3GB 12模型的可持续性评价
IF 3 4区 化学
Luminescence Pub Date : 2025-08-25 DOI: 10.1002/bio.70292
Yousef S. Elshamy, Mostafa A. Afify, Majed Alharbi, Ahmed K. Kammoun, Rasha M. Youssef, Sameh E. Younis
{"title":"Spectrofluorimetric Method for the Assay of Fixed-Dose Combinations Containing Olmesartan: Sustainability Assessment via Novel Relative Ranking NQS Index, GSST, and Whiteness R3GB 12 Model","authors":"Yousef S. Elshamy,&nbsp;Mostafa A. Afify,&nbsp;Majed Alharbi,&nbsp;Ahmed K. Kammoun,&nbsp;Rasha M. Youssef,&nbsp;Sameh E. Younis","doi":"10.1002/bio.70292","DOIUrl":"10.1002/bio.70292","url":null,"abstract":"<div>\u0000 \u0000 <p>The Need, Quality, and Sustainability (NQS) index was very recently developed. It evaluates the compromise of analytical techniques between social needs, analytical performance, and global sustainability. Regarding ARBs, Olmesartan (OLM) has become one of the worldwide first-line antihypertensive therapies. Its fixed-dose combinations present a solution for insufficient monotherapy or comorbidity conditions. Thus, the demand increased to develop methods that could analyze OLM fixed-dose combinations. This work has adopted the second derivative spectrofluorimetry for assaying OLM with either the β-blocker (Metoprolol, MET) or the cholesterol-lowering drug (Atorvastatin, ATR) in their combined tablets. Comparative sustainability assessment of the proposed versus the reported ones was achieved using the most modern tool (NQS index). For the first time, it was calculated based on whiteness R<sup>3</sup>GB 12 model as “Quality” aspect. It employs an innovative efficient relative ranking approach using a simple Microsoft Excel function. In addition, the green solvent selection tool (GSST) was incorporated in selecting the greener extraction solvent. Comprehensive evaluation of the reported methods highlights the advantages of the proposed analytical approach. Implementing them in routine analysis of the studied OLM binary combinations was encouraged by high selectivity, linearity, eco-friendliness, and simplicity. Being economic potentiates their vast application in developing countries.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 8","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894423","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
Design and Synthesis of Novel Coumarin–Isoxazole Conjugates as Chemosensers: A Highly Selective and Instantaneous Detection of Mn2+ and Cu2+ Ions 新型香豆素-异恶唑偶联物化学传感器的设计与合成:Mn2+和Cu2+离子的高选择性瞬时检测
IF 3 4区 化学
Luminescence Pub Date : 2025-08-25 DOI: 10.1002/bio.70293
Sonam Kandola, Avijit Bhakta, Naseem Ahmed
{"title":"Design and Synthesis of Novel Coumarin–Isoxazole Conjugates as Chemosensers: A Highly Selective and Instantaneous Detection of Mn2+ and Cu2+ Ions","authors":"Sonam Kandola,&nbsp;Avijit Bhakta,&nbsp;Naseem Ahmed","doi":"10.1002/bio.70293","DOIUrl":"10.1002/bio.70293","url":null,"abstract":"<div>\u0000 \u0000 <p>This study demonstrates the synthesis and characterization of a series of novel isoxazole-containing 4-hydroxycoumarin-based chemosensors for the highly selective and rapid detection of Mn<sup>2+</sup> and Cu<sup>2+</sup> ions from among several metal ions in DMSO: EtOH (1:9 v/v). The probes were synthesized using inexpensive and readily available starting materials and were structurally characterized by <sup>1</sup>H and <sup>13</sup>C NMR, FT-IR, HRMS, and SC-XRD spectroscopic analyses. UV–Vis, fluorescence studies, and X-ray crystallography revealed a significant binding interaction with Cu<sup>2+</sup> and Mn<sup>2+</sup>, leading to pronounced spectral shifts. Fluorescence studies demonstrated strong fluorescence enhancement for Mn<sup>2+</sup>, whereas Cu<sup>2+</sup> exhibited quenching behavior. The calculated binding constant for the <b>8f-Mn</b><sup><b>2+</b></sup> complex was 1.2233 × 10<sup>7</sup> M<sup>−1</sup> and for the <b>8f-Cu</b><sup><b>2+</b></sup> complex was 5.4647 × 10<sup>7</sup> M<sup>−1</sup>. Again, the calculated limit of detection (LOD) for Mn<sup>2+</sup> and Cu<sup>2+</sup> with respect to the ligand <b>8f</b> was 2.697552 × 10<sup>−7</sup> M and 0.60491 × 10<sup>−7</sup> M respectively, indicating high sensitivity. The fluorescence variations in <b>8f</b> with two chemical inputs, Mn<sup>2+</sup> and Cu<sup>2+</sup>, can be utilized to create a molecular circuit demonstrating an INHIBIT logic operation based on studies. The competitive selectivity experiments confirmed the ligand's superior affinity towards Mn<sup>2+</sup> in the presence of various metal ions.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 8","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897514","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
Functionalized CdS-ZnS Quantum Dots With Thiolate Group Capping Agents and Their Application as Fluorescence Probe for Measurement of Europium Ion 巯基封盖剂功能化CdS-ZnS量子点及其荧光探针在铕离子测量中的应用
IF 3 4区 化学
Luminescence Pub Date : 2025-08-25 DOI: 10.1002/bio.70248
Seyfollah Ghasemi, Abdolraouf Samadi-Maybodi
{"title":"Functionalized CdS-ZnS Quantum Dots With Thiolate Group Capping Agents and Their Application as Fluorescence Probe for Measurement of Europium Ion","authors":"Seyfollah Ghasemi,&nbsp;Abdolraouf Samadi-Maybodi","doi":"10.1002/bio.70248","DOIUrl":"10.1002/bio.70248","url":null,"abstract":"<div>\u0000 \u0000 <p>CdS-ZnS core-shell quantum dots (QDs) were synthesized with three different types of capping agents. To achieve the best fluorescence emission efficiency the factors of pH, temperature, and the ratio of CdS-ZnS QDs to the capping agent, were investigated via a full factorial experimental design. The best fluorescence intensity was obtained at pH 8, temperature 80°C, and a ratio of CdS-ZnS to the capping agent of 1:1.5. CdS-ZnS QDs were fabricated with different capping agents: thioglycolic acid, mercaptosuccinic acid, and L-cysteine. The interaction of the synthesized QDs with metals ions Gd<sup>3+</sup>, La<sup>3+</sup>, Th<sup>4+</sup>, Pr<sup>3+</sup>, Eu<sup>3+</sup>, and Ce<sup>4+</sup> was investigated. The results showed that europium (III) ions significantly reduced the fluorescence emission intensity of QDs. Additionally, the fluorescence intensity decreases linearly with increasing europium (III) ion concentration. The detection limits for measuring europium (III) ions were obtained 1.56 × 10<sup>−6</sup> a linear dynamic range of 7.8 × 10<sup>−6</sup> to 5.0 × 10<sup>−4</sup> M. Also, the fluorescence quantum yields for CdS-ZnS@LCY, CdS-ZnS@MSA and CdS-ZnS@TGA were obtained 4.23, 2.32 and 2.64, respectively. The binding constants (<i>K</i><sub><i>b</i></sub>) of CdS-ZnS@TGA, CdS-ZnS@MSA, and CdS-ZnS@LCY QDs with Eu<sup>2+</sup> were investigated and results were found as 194, 178, and 929, respectively. The Stern–Volmer constant and R<sup>2</sup> were investigated for the above ions with QDs.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 8","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897563","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}
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