Luminescence最新文献

Photoluminescence Mechanisms and Optical Sensing Applications of MXene Quantum Dots for Pesticide Detection in Vegetable Matrices. MXene量子点在蔬菜基质中农药检测中的光致发光机理及光学传感应用。

IF 2.8 4区化学

Luminescence Pub Date : 2026-09-01 DOI: 10.1002/bio.70614

Tareq Nayef AlRamadneh, Flah Shryf Abdul, Amaal Mohammed Ali, Manoj A Vora, R Roopashree, Lalita Chopra, Babamuratov Bekzod, Murodjon Yaxshimuratov, Sobhan Mirizadeh

{"title":"Photoluminescence Mechanisms and Optical Sensing Applications of MXene Quantum Dots for Pesticide Detection in Vegetable Matrices.","authors":"Tareq Nayef AlRamadneh, Flah Shryf Abdul, Amaal Mohammed Ali, Manoj A Vora, R Roopashree, Lalita Chopra, Babamuratov Bekzod, Murodjon Yaxshimuratov, Sobhan Mirizadeh","doi":"10.1002/bio.70614","DOIUrl":"10.1002/bio.70614","url":null,"abstract":"The widespread occurrence of pesticide residues and inorganic contaminants in vegetables requires rapid, sensitive, and reliable analytical approaches for food safety monitoring. MXene quantum dots (MQDs) have attracted significant attention as advanced luminescent nanomaterials due to their tunable photoluminescence, surface chemistry, and strong interfacial interactions. This review provides a mechanism-oriented overview of MQDs-based optical sensing platforms for detecting contaminants in vegetable matrices, emphasizing photoluminescence behavior and signal modulation mechanisms. The influence of key structural parameters, including quantum confinement, surface terminations, heteroatom doping, and defect engineering, is discussed in relation to emission properties and sensing performance. Fundamental photophysical processes, including charge transfer, energy transfer, and inner filter effects (IFE), are analyzed to clarify fluorescence responses during analyte recognition. Various sensing strategies, such as fluorescence probes, ratiometric sensors, dual-mode optical platforms, and MQDs-assisted nanozyme systems, are highlighted, demonstrating high sensitivity and practical applicability. In hybrid nanozyme platforms, MQDs primarily act as interfacial electronic mediators and catalytic enhancers by facilitating charge transfer and improving interactions with catalytic components rather than functioning as independent catalytic centers. Remaining challenges include matrix interference, reproducibility, stability, and mechanistic understanding. Future perspectives focus on integrating MQDs with portable devices and data-driven technologies for real-time food safety monitoring.","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 9","pages":"e70614"},"PeriodicalIF":2.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13527596/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148867621","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

Influence of Pr6O11 Concentration on the Thermal, Structural, Physical, and Optical Behavior of SNW Glass Systems Pr6O11浓度对SNW玻璃系统热、结构、物理和光学行为的影响

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-28 DOI: 10.1002/bio.70615

F. Z. Agti, M. T. Soltani, L. F. Santos

{"title":"Influence of Pr6O11 Concentration on the Thermal, Structural, Physical, and Optical Behavior of SNW Glass Systems","authors":"F. Z. Agti, M. T. Soltani, L. F. Santos","doi":"10.1002/bio.70615","DOIUrl":"https://doi.org/10.1002/bio.70615","url":null,"abstract":"<div>\u0000 \u0000 Praseodymium-doped antimony–phosphate glasses with the composition 47.5Sb2O3–47.5NaPO3–5WO3–xPr6O11 (x = 0.05, 0.1, 0.25, 0.3 mol%) were synthesized by melt-quenching and characterized by DSC, FTIR, density, hardness, ultrasonic, and UV–Vis techniques. Tg (314.26°C–320.61°C) and ΔT (40.12°C–59.07°C) showed limited variation, with highest stability for the undoped glass. FTIR confirmed phosphate groups (P–O–P, PO32−, PO2−) and increasing NBO, indicating Pr-induced depolymerization. Density decreased (4.2735–4.2223 g/cm3), while hardness increased (254–289 kg/mm2). Molar volume (48.47–49.76 cm3/mol), oxygen molar volume (16.16–16.40 cm3/mol), and molar refraction increased, reflecting a more open, polarizable structure. Elastic moduli increased up to 0.25-mol% Pr then slightly decreased. The optical band gap decreased (3.079–3.022 eV), Urbach energy increased (0.350–0.374 eV), and refractive index increased with Pr content. The results indicate that Pr6O11 functions as an effective network modifier, promoting controlled depolymerization and enhanced optical tunability while preserving thermal stability and mechanical integrity. Among the studied compositions, 0.25-mol% Pr6O11 provides the optimal balance between structural rigidity, optical properties, and mechanical strength, making these glasses promising candidates for composition-tunable active photonic media, particularly in broadband optical amplifiers, visible–near infrared solid-state laser hosts, and high-refractive-index waveguide components, where the combined enhancement of refractive index, mechanical strength, and electronic polarizability enables efficient light confinement and emission control.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849238","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

Sol–Gel–Synthesized Mn4+-Doped Sr9Gd2W4O24 Red Phosphor: Structural, Optical, and EPR Studies for Deep-Red LEDs and Plant Growth Lighting Applications 溶胶-凝胶合成Mn4+掺杂Sr9Gd2W4O24红色荧光粉：深红色led和植物生长照明应用的结构、光学和EPR研究

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-28 DOI: 10.1002/bio.70611

Vijay Singh, Sumandeep Kaur, Ch. B. Annapurna Devi, Amol Nande, Rajamouli Boddula, A. S. Rao, Ji Bong Joo

{"title":"Sol–Gel–Synthesized Mn4+-Doped Sr9Gd2W4O24 Red Phosphor: Structural, Optical, and EPR Studies for Deep-Red LEDs and Plant Growth Lighting Applications","authors":"Vijay Singh, Sumandeep Kaur, Ch. B. Annapurna Devi, Amol Nande, Rajamouli Boddula, A. S. Rao, Ji Bong Joo","doi":"10.1002/bio.70611","DOIUrl":"https://doi.org/10.1002/bio.70611","url":null,"abstract":"<div>\u0000 \u0000 Double perovskite materials, such as strontium–gadolinium tetra tungstate (Sr9Gd2W4O24), offer tunable luminescence by adjusting composition and structure, making them ideal for LED and display applications. In this study, Sr9Gd2W4O24 phosphors doped with various concentrations of Mn4+ ions were synthesized using the sol–gel method and systematically investigated to elucidate their structural, optical, and luminescent properties. The XRD and FTIR confirmed the crystal structure and phase purity, while the DRS studies revealed a suitable band gap for optoelectronic applications. Under the excitation of 343 nm, the phosphors exhibit intense red emission at 681 nm, attributed to 2Eg → 4A2g transition of Mn4+. The photoluminescence color photometry analysis revealed emission in the red region with a color purity of 96.21%. Crystal field analysis helps to estimate factors such as Racah parameters and nephelauxetic parameters. These parameters suggest that Mn4+ experience a strong crystal field within the Sr9Gd2W4O24 matrix and a moderate degree of covalency between Mn4+–O2− bonds. Electron paramagnetic resonance studies were also performed on the current phosphor to investigate the dopant's coordination in the host. The results suggest potential application in deep-red LEDs for plant growth and advanced ceramics for optoelectronics.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849239","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

Deconvolution and Correction of the Inner Filter Effect in a Tri-Enzymatic Fluorescent Cascade for Ultra-Extended Cholesterol Quantification 超扩展胆固醇定量的三酶荧光级联中内过滤效应的反卷积和校正。

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-24 DOI: 10.1002/bio.70608

Surendra K. Yadav

{"title":"Deconvolution and Correction of the Inner Filter Effect in a Tri-Enzymatic Fluorescent Cascade for Ultra-Extended Cholesterol Quantification","authors":"Surendra K. Yadav","doi":"10.1002/bio.70608","DOIUrl":"10.1002/bio.70608","url":null,"abstract":"<div>\u0000 \u0000 The sensing architecture leveraging a tri-component fluorescent bio probe (Cholesterol Oxidase-Horse Reddish Peroxidase-Ampliflu Red) drives a highly efficient enzymatic cascade for the acutely sensitive and selective spectrophotometric quantification of cholesterol. The reaction culminates in the HRP catalyzed oxidation of Ampliflu Red, generating an intense, quantifiable emission centered at λem = 585 nm and excitation at λex = 570 nm, whose intensity is stoichiometrically correlated with cholesterol concentration (c). Crucially, the inner filter effect, which typically imposes nonlinearity at high analyte concentrations, is mathematically deconvoluted and corrected. This computational approach drastically expands the linear dynamic range from 0.2 mg/dL to unprecedented 975 mg/dL, demonstrating a paradigm shift in overcoming fundamental limitations (encompassing concentrations beyond the typical > 375 mg/dL inflection point) and extending the analytical applicability of fluorescence biosensors into previously inaccessible high-concentration regimes.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148814832","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

Micellar Enhanced Second Derivative Spectrofluorimetric Determination of Hydrochlorothiazide, Amlodipine, and Telmisartan in Fixed Dose Combination and Spiked Human Plasma 胶束增强二阶导数荧光光谱法测定人血浆中氢氯噻嗪、氨氯地平和替米沙坦的固定剂量组合和加标。

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-23 DOI: 10.1002/bio.70612

Suvarna Yenduri, Shashank H, Naga Prashant K

{"title":"Micellar Enhanced Second Derivative Spectrofluorimetric Determination of Hydrochlorothiazide, Amlodipine, and Telmisartan in Fixed Dose Combination and Spiked Human Plasma","authors":"Suvarna Yenduri, Shashank H, Naga Prashant K","doi":"10.1002/bio.70612","DOIUrl":"10.1002/bio.70612","url":null,"abstract":"<div>\u0000 \u0000 A very sensitive and eco-friendly second-derivative spectrofluorimetric method was developed for simultaneous analysis of hydrochlorothiazide (HCTZ), amlodipine besylate (AML), and telmisartan (TEL) in pharmaceutical products and human plasma. Native fluorescence of HCTZ (λex267/λem295 nm), AML (λex362/λem415 nm), and TEL (λex292/λem369 nm) was used together with fluorescence enhancement achieved through sodium lauryl sulfate micelles at optimum excitation/emission wavelengths for all other analytes being analyzed. Overlap of spectroscopic data was able to be resolved through second-derivative spectrofluorimetry without prior separation. Method validation was performed according to ICH Q2(R1) guidelines; results showed excellent linearity (R2 > 0.999) across a concentration range of 3–18, 2–10, and 10–50 ng/mL for HCTZ, AML, and TEL, respectively. Accuracy, precision and robustness were demonstrated with %RSD values below two. Application of the method to pharmaceutical product and spiked plasma samples gave satisfactory recoveries with minimal matrix interference. Assessment of method greenness was conducted using AGREE Prep, MoGAPI, AGSA, SAMI, Ma Tool, CACI, and WECA metrics, all of which indicate superior environmental sustainability. The proposed method is simple, fast, low-cost, ultra-sensitive, and suitable for routine quality control and/or bioanalytical analysis.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148809275","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

Photodynamic Therapy for Toxoplasma gondii Infections Using Rose Bengal 玫瑰光动力治疗刚地弓形虫感染。

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-23 DOI: 10.1002/bio.70583

Wen Li, Jiating Chen, Jie Li, Qingqing Zhang, Jihong Chen, Pengfei Zhang, Fufeng Liu

{"title":"Photodynamic Therapy for Toxoplasma gondii Infections Using Rose Bengal","authors":"Wen Li, Jiating Chen, Jie Li, Qingqing Zhang, Jihong Chen, Pengfei Zhang, Fufeng Liu","doi":"10.1002/bio.70583","DOIUrl":"10.1002/bio.70583","url":null,"abstract":"<div>\u0000 \u0000 Toxoplasma gondii is a globally prevalent obligate intracellular protozoan parasite that causes severe zoonotic disease. Given the limitations of conventional drug therapies, including susceptibility to drug resistance, and significant toxic side effects, this study aimed to evaluate the efficacy of photodynamic therapy (PDT) combined with the classic photosensitizer Rose Bengal in eradicating T. gondii tachyzoites, whilst elucidating its underlying mechanism of action. Experimental results demonstrate that Rose Bengal efficiently induces the generation of both Type I and Type II reactive oxygen species (ROS) under light exposure, exhibiting potent phototoxic killing effects against T. gondii. Further transcriptomic analysis revealed that this mechanism involves Rose Bengal disrupting metabolic and motility-related signaling pathways in T. gondii, thereby programmatically inducing T. gondii cell death. Both in vivo and in vitro experiments confirmed that this approach effectively eradicates T. gondii while demonstrating favorable biosafety. This study provides experimental evidence for developing novel photodynamic therapies against T. gondii, expanding the application potential of photodynamic therapy in combating parasitic infections.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148809255","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

Fe-MOF-NH2@Metformin as a Peroxidase-Like Activity for Fluorometric Glucose Sensing Fe-MOF-NH2@Metformin作为过氧化物酶样活性的荧光葡萄糖传感

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-18 DOI: 10.1002/bio.70607

Padideh Sadeghi, Abdolraouf Samadi-Maybodi

{"title":"Fe-MOF-NH2@Metformin as a Peroxidase-Like Activity for Fluorometric Glucose Sensing","authors":"Padideh Sadeghi, Abdolraouf Samadi-Maybodi","doi":"10.1002/bio.70607","DOIUrl":"https://doi.org/10.1002/bio.70607","url":null,"abstract":"<div>\u0000 \u0000 In this research, an amine-containing metal–organic framework was modified with metformin (Fe-MOF-NH2@metformin) and used as peroxidase-like activity for fluorometric determination of glucose. The best fluorescence emission intensity (λm = 450 nm) was found at the excitation wavelength of λex = 350 nm. Results indicated that H2O2 and glucose can effectively quench the fluorescence emission of Fe-MOF-NH2@metformin, and the fluorescence intensity linearly decreased with increasing concentration of H2O2 or glucose. Moreover, the quenching effect of H2O2 is considerably enhanced in the presence of dopamine, and hence, this compound plays a role of synergistic effect in the quenching process, and accordingly, the spectra are more differentiated and more distinguishable. The Stern–Volmer quenching constant (KSV) for H2O2 and glucose were obtained at 0.005 and 0.004 M−1, respectively. The binding constant (Kb) and the site number (n) of Fe-MOF-NH2@metformin were also investigated and discussed. The Kb and n for glucose were obtained at 209 and 0.6839, likewise for H2O2, 77 and 0.5484, respectively. The detection limits for measuring glucose and H2O2 were obtained 0.511 and 0.351 μM, respectively.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784374","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

Study on Two Carbazole-Based Difluoroboron Dyes With Aggregation-Induced Emission for Mechanofluorochromism, Ink-Free Writing, and Latent Fingerprint Imaging 两种卡唑基聚致发光双氟硼染料机械荧光、无墨书写和指纹潜影成像的研究

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-17 DOI: 10.1002/bio.70609

Shan Li, Xueting Xu, Zhi Peng, Xuesong Luo, Yanhua Yang, Xiangguang Li, Jianfei Wang, Gaozhang Gou

{"title":"Study on Two Carbazole-Based Difluoroboron Dyes With Aggregation-Induced Emission for Mechanofluorochromism, Ink-Free Writing, and Latent Fingerprint Imaging","authors":"Shan Li, Xueting Xu, Zhi Peng, Xuesong Luo, Yanhua Yang, Xiangguang Li, Jianfei Wang, Gaozhang Gou","doi":"10.1002/bio.70609","DOIUrl":"https://doi.org/10.1002/bio.70609","url":null,"abstract":"<div>\u0000 \u0000 To develop multifunctional small organic molecules, two carbazole-based difluoroboron compounds, AIE-1 with a triphenylamine unit and AIE-2 with two tert-butyl groups, were synthesized. The results of optical measurement indicated that the two compounds exhibited intramolecular charge transfer and solvatochromism phenomena in six organic solvents, and aggregation-induced emission in EtOH/water mixtures. It could be explained through quantum chemical calculations. AIE-2 had reversibly mechanofluorochromism property, originating from the phase transformation between the ordered crystalline and the disordered amorphous states, and possessed rewritable ink-free writing behavior, but AIE-1 did not due to its inherent amorphous characteristics. Furthermore, the two compounds could make latent fingerprint imaging on the surface of a blade, and all levels of feature details could be clearly identified. Further research indicated that these developers exhibited stability and the ability to extract aged fingerprints, which better satisfied the requirements of practical applications. The specific response of the two carbazole-based difluoroboron compounds to oleic acid secreted by sweat was a key factor in the visualization of latent fingerprints. It implied a potential application in forensic chemistry and criminal investigation.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783789","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

N-Annulated Perylene Diimide Emitters for High-Performance Peroxyoxalate/H2O2 Chemiluminescence 高性能过氧草酸/H2O2化学发光的n -环苝二亚胺发射体。

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-16 DOI: 10.1002/bio.70604

Xiaoli Qin, Ziying Zhan, Edward Cieplechowicz, Liuqing Yang, Congyang Zhang, Kenneth Chu, Sara Jahanghiri, Gregory C. Welch, Zhifeng Ding

{"title":"N-Annulated Perylene Diimide Emitters for High-Performance Peroxyoxalate/H2O2 Chemiluminescence","authors":"Xiaoli Qin, Ziying Zhan, Edward Cieplechowicz, Liuqing Yang, Congyang Zhang, Kenneth Chu, Sara Jahanghiri, Gregory C. Welch, Zhifeng Ding","doi":"10.1002/bio.70604","DOIUrl":"10.1002/bio.70604","url":null,"abstract":"Perylene diimides (PDIs), as one type of the most promising luminescent materials, have been attracted much attention. Herein, chemiluminescent (CL) properties of two N-annulated PDI dimers with hexyl linear alkyl chains (PDI-1) and 2,4,6-trimethylbenzyl sidechains (PDI-2) at the pyrrolic N-positions were investigated. CL emissions are explored in chemical reactions with bis(2-carbopentyloxy-3,5,6-trichlorophenyl) oxalate (CPPO) and hydrogen peroxide (H2O2). Spooling CL spectroscopy was utilized for investigating their CL reaction mechanism, illuminant decay and absolute efficiencies. CL emission peak wavelength of PDI-1 or PDI-2 is similar to their photoluminescence (PL) one, demonstrating emissions mainly from the monomeric excited state in the absence of surface states. Moreover, absolute irradiance measurements on a set of a spectrograph and CCD camera or an Ocean Insight spectrometer along with a 6-inch integrating sphere were calibrated using a standardized light source for further quantum efficiency determinations. The absolute CL efficiency of PDI-1 (3.57% ± 0.03%) was discovered to be 6 times higher than that of PDI-2 (0.603% ± 0.001%). The absolute CL efficiencies of PDI-1 and PDI-2 are superior to those of many other organic molecules and graphene quantum dots. This work provides a novel pathway for the exploration of these PDI materials to improve their CL performance.","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bio.70604","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148762496","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

Photoluminescence Explorations of Mg-Activated Potassium Phospho-Borate Glasses Doped With Dy3+ Ions for Laser Applications 掺杂Dy3+离子的mg活化磷酸硼酸钾玻璃的光致发光研究

IF 2.8 4区化学

Luminescence Pub Date : 2026-08-14 DOI: 10.1002/bio.70595

K. A. Naseer, Aljawhara H. Almuqrin, M. I. Sayyed, S. Arul raja sekaran, S. A. Bassam

{"title":"Photoluminescence Explorations of Mg-Activated Potassium Phospho-Borate Glasses Doped With Dy3+ Ions for Laser Applications","authors":"K. A. Naseer, Aljawhara H. Almuqrin, M. I. Sayyed, S. Arul raja sekaran, S. A. Bassam","doi":"10.1002/bio.70595","DOIUrl":"https://doi.org/10.1002/bio.70595","url":null,"abstract":"<div>\u0000 \u0000 To scrutinise the spectroscopic performance of the Mg-activated potassium phospho-borate glasses doped with Dy3+ ions, a novel series of alkali/transition metals and heavy-metal modified glasses have been fabricated utilising the conventional melt-quench process. The nephelauxetic ratio (1<) and negative bonding parameter (δ) confirms that Dy−O bonds are ionic. The photoluminescence spectra show emission in the visible region is dominated by the electric-dipole 4F9/2 → 6H13/2 transition (~573 nm). The estimated JO parameters have the trend as Ω2 > Ω6 > Ω4, which indicates the asymmetric environment around the Dy3+. Exceptionally, the BPMKD:P glass follows the Ω2 > Ω4 > Ω6 trend. CIE analysis affirmed that the studied glass samples exhibit emission in the white region, with CdO and ZnO modified glass showing colour purity as 5% and 8%, respectively, which indicates its closeness to the pure-white light emission. Radiative parameters such as A, βR, σE, Δλeff and τrad were computed for the 6H15/2 → 6F15/2 and 6H15/2 → 6F13/2 transitions. Among all glasses, BPMKD:Z glass shows enhanced magnitudes of the radiative parameters, which demonstrate superior potential for lasing and opto-electronic applications. The decay profiles of the 4F9/2 level showed bi-exponential behaviour, wherein the higher quantum efficiency is found for the BPMKD:Z glass, which further confirms its suitability for white-light emitting applications.\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"41 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148754031","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