LuminescencePub Date : 2025-10-03DOI: 10.1002/bio.70329
Sri Sudewi, Hosea Jaya Edy, Yuanita Amalia Hariyanto, Penki Venkata Sai Sashankh, Akhtar Rasool, Muhammad Zulfajri, Gedda Gangaraju, Genin Gary Huang
{"title":"Nanoengineered Carbon Dots for Enhanced Antibacterial Response and Sensitive Bacterial Sensing","authors":"Sri Sudewi, Hosea Jaya Edy, Yuanita Amalia Hariyanto, Penki Venkata Sai Sashankh, Akhtar Rasool, Muhammad Zulfajri, Gedda Gangaraju, Genin Gary Huang","doi":"10.1002/bio.70329","DOIUrl":"10.1002/bio.70329","url":null,"abstract":"<div>\u0000 \u0000 <p>The relevance of carbon dots (CDs) in a variety of application areas has drawn a lot of interest. The CDs for enhanced antibacterial activity and the sensitive identification of pathogenic bacteria are described. The CDs and N-CDs were produced using a microwave, which provided a quick, one-pot, and economical method. CDs and N-CDs showed a high stability for up to 3 months, with an average diameter of 5.761 ± 0.263 nm and 4.226 ± 0.210 nm, respectively. The higher inhibition zone and decreased bacterial growth demonstrated the enhanced antibacterial properties of N-CDs compared to CDs. A regression calibration curve was set up for quantitatively measuring <i>Staphylococcus aureus</i> (<i>S. aureus</i>) and <i>Escherichia coli</i> (<i>E. coli</i>) using CDs and N-CDs resulting in a high square of correlation coefficient with <i>r</i><sup>2</sup> > 0.99. Electrostatic interaction explains the tenable mechanism. CDs and N-CDs were tested to assess their ability to probe bacteria in orange juice. The analytical performance was validated using recovery tests with an acceptable range and relative standard deviation resulting in a good value of less than 4%. Nanosensor carried out in orange juice confirmed the viability of this sensing strategy and its potential to expand the detection of <i>S. aureus</i> and <i>E. coli</i> bacteria.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145214217","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}
LuminescencePub Date : 2025-10-02DOI: 10.1002/bio.70323
Quanquan Gong, Dandan Dou, Guoying Zhang, Kun Wang, Jianguang Yin, Xiangyu Cui, Liuqian Yang
{"title":"Cataluminescence Sensor Based on ZnO–CuO Composites for Rapid and Selective Detection of Hydrogen Sulfide","authors":"Quanquan Gong, Dandan Dou, Guoying Zhang, Kun Wang, Jianguang Yin, Xiangyu Cui, Liuqian Yang","doi":"10.1002/bio.70323","DOIUrl":"10.1002/bio.70323","url":null,"abstract":"<div>\u0000 \u0000 <p>Hydrogen sulfide (H<sub>2</sub>S) is a highly toxic and corrosive gas, necessitating rapid and selective detection strategies for environmental and occupational safety. In this work, a ZnO–CuO composites were rationally designed and synthesized via a hydrothermal route and evaluated as a cataluminescence (CTL) sensing material for H<sub>2</sub>S monitoring. The sensor demonstrated a strong CTL response under mild operating conditions, offering a detection limit as low as 4 ppm, rapid response, and recovery within 2.5 s, and excellent selectivity against a broad panel of volatile organic and inorganic gases. Mechanistic investigations were conducted using BET surface analysis and energy band modeling based on the p–n heterojunction structure to explore the origin of signal enhancement in the ZnO–CuO composites. Validation with simulated gas mixtures confirmed good recovery and practical feasibility. These findings demonstrate the significant potential of ZnO–CuO composites for selective, sensitive, and rapid H<sub>2</sub>S monitoring in the workplace.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208217","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}
LuminescencePub Date : 2025-10-01DOI: 10.1002/bio.70327
Shiyi Xiong, Xinlin Cao, Mengying Jia, Yi Ren, Peng Wang
{"title":"An Aggregation-Induced Emission Active Peptide-Based Fluorescent Probe for Highly Selective and Sensitive Detection of Hg(II) Ions and Its Multifield Applications","authors":"Shiyi Xiong, Xinlin Cao, Mengying Jia, Yi Ren, Peng Wang","doi":"10.1002/bio.70327","DOIUrl":"10.1002/bio.70327","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, a novel aggregation-induced emission (AIE) active peptide-based fluorescent probe (<b>L</b>) was rationally designed and successfully synthesized with a tetraphenylethene (TPE) derivative modified tetrapeptide (Pro–Gly–Asp–His–NH<sub>2</sub>). <b>L</b> has many advantages of good water solubility, a large Stokes shift, and a high fluorescence quantum yield. According to the design, <b>L</b> was utilized to selectively recognize Hg<sup>2+</sup> against other competitive metal ions in the HEPES buffer solution (pH = 7.4, 10.0 mM, containing 5% DMSO), and the limit of detection (LOD) for Hg<sup>2+</sup> was obtained to be as low as 25.4 nM. In addition, <b>L</b> not only was successfully applied to monitor Hg<sup>2+</sup> in living cells and zebrafish larvae, but also was used to measure Hg<sup>2+</sup> in three different real water samples. Moreover, the test strips were successfully made using <b>L</b> solution, and qualitatively identified Hg<sup>2+</sup> through using the naked eye under UV light at 365 nm. Furthermore, the reversible switching characteristics of <b>L</b> were used to mimic the INHIBIT molecular logic gate. More interestingly, the integrated smartphone color recognition <i>App</i> converts the color of <b>L</b> solution into digital values through the RGB channel and was successfully applied to the semiquantitative detection of Hg<sup>2+</sup> without relying on expensive instruments.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202148","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}
LuminescencePub Date : 2025-10-01DOI: 10.1002/bio.70331
Manzar Zahra, Jigar Ali, Mohsin Javed, Muhammad Yousaf, Muhammad Afzaal, Syed Kashif Ali, Ahmad Asimov, Farruh Atamurotov, Doniyor Jumanazarov, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Abd-ElAziem Farouk
{"title":"Synthesis, Characterization, and Enriched Photocatalytic Performance of FeS/NiS-Engineered Graphene Oxide (GO) Nanocomposites for Environmental Applications.","authors":"Manzar Zahra, Jigar Ali, Mohsin Javed, Muhammad Yousaf, Muhammad Afzaal, Syed Kashif Ali, Ahmad Asimov, Farruh Atamurotov, Doniyor Jumanazarov, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Abd-ElAziem Farouk","doi":"10.1002/bio.70331","DOIUrl":"https://doi.org/10.1002/bio.70331","url":null,"abstract":"<p><p>Iron sulfide (FeS) and nickel sulfide (NiS) nanoparticles were synthesized through coprecipitation and hydrothermal methods, respectively. The nanoparticles were confirmed for the structural and morphological analysis using XRD patterns with crystallite sizes of 29 and 22 nm, respectively. The modified Hummers' method was exploited to synthesize GO nanoflakes with a crystallite size of 13 nm, which was confirmed via XRD and SEM images. FeS/NiS@GO nanocomposite was prepared via the coprecipitation route. The structure and composition were confirmed through FTIR and XRD, with a crystallite size of 30 nm. SEM micrographs depicted the spherical nanoparticles of FeS and NiS, well adhered to the GO nanoflakes, thus providing the extensive surface area responsible for catalytic behavior. The photocatalytic behavior of the nanomaterial was investigated through the degradation studies of Rhodamine B dye. UV-Visible spectroscopy was utilized to monitor the absorbance due to dye molecules at λ<sub>max</sub>. The percentage degradation was increased with increased contact time, thus photodegrading the dye molecules. With a contact time of 4.5 h, the degradation of Rhodamine B was observed to reach about 90%. Hence, photocatalytic activity of the newly synthesized nanocomposite, FeS/NiS@GO, presents an efficient class of materials for the treatment of wastewater.</p>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":"e70331"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145240336","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}
LuminescencePub Date : 2025-10-01DOI: 10.1002/bio.70325
Lu Tang, Ruojun Man, Weiling Deng
{"title":"Developing a Pyridine-Imidazole-Modified Fluorescent Probe for Monitoring Carboxylesterase Level During the Inflammation Regulation in Macrophages","authors":"Lu Tang, Ruojun Man, Weiling Deng","doi":"10.1002/bio.70325","DOIUrl":"10.1002/bio.70325","url":null,"abstract":"<div>\u0000 \u0000 <p>Herein, a pyridine-imidazole-modified fluorescent probe named <b>PIM-CarE</b> was developed for monitoring carboxylesterase levels during inflammation. The modification on the fluorophore to form an <i>ortho</i>-pattern resulted in an obvious fluorescence intensity enhancement compared to the <i>para</i>-/<i>meta</i>-fluorophores. The fluorescence reporting intensity at 485 nm exhibited a dose-dependent enhancement with the increase of the CarE level under excitation at 310 nm. The advantages included a practical linear range, relatively high sensitivity, and stable optical performance in various working conditions, including pH, incubation time, and temperature. The probe also showed high selectivity and low cytotoxicity. Furthermore, as a challenging trial, <b>PIM-CarE</b> achieved monitoring of inflammation regulation in macrophages, with both the generation and treatment processes covered. The information here was meaningful for inflammation regulation investigations in the entire departments.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202110","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}
LuminescencePub Date : 2025-10-01DOI: 10.1002/bio.70330
Yao Zhang, Fei Zhang, Xiaoxiao Wu, Kunwei Ma, Jiong Li, Shijing Shi, Jiaxin Kang
{"title":"Engineering Mitochondria Targeting Near-Infrared AIE Fluorescent Probes and Image-Guided Photodynamic Therapy.","authors":"Yao Zhang, Fei Zhang, Xiaoxiao Wu, Kunwei Ma, Jiong Li, Shijing Shi, Jiaxin Kang","doi":"10.1002/bio.70330","DOIUrl":"https://doi.org/10.1002/bio.70330","url":null,"abstract":"<p><p>Mitochondria play a very important role in the process of cell metabolism and apoptosis, and their morphology is closely related to the deterioration of some diseases. Aggregation-induced emission luminogens (AIEgens) are a promising biological imaging material due to their good stability and have been widely used in organelle targeting, localization, and tracking of cell metabolism. In this study, a near-infrared fluorescence molecule with aggregation-induced emission (AIE) properties was synthesized. The molecule has the characteristics of a large Stokes shift and good biocompatibility. This molecule can specifically target mitochondria in cells and can effectively produce ROS and kill cancer cells under white light irradiation, showing an excellent photodynamic therapy (PDT) effect in cells.</p>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":"e70330"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145240300","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}
LuminescencePub Date : 2025-09-29DOI: 10.1002/bio.70324
Dan Bahadur Pal, Amit Kumar Rathoure, Anjali Awasthi, Shina Gautam, Santosh Kumar, Ashish Kapoor
{"title":"Microfluidic Paper-Based Lab-on-a-Chip Chemiluminescence Sensing for Healthcare and Environmental Applications: A Review","authors":"Dan Bahadur Pal, Amit Kumar Rathoure, Anjali Awasthi, Shina Gautam, Santosh Kumar, Ashish Kapoor","doi":"10.1002/bio.70324","DOIUrl":"10.1002/bio.70324","url":null,"abstract":"<div>\u0000 \u0000 <p>Microfluidic paper-based lab-on-a-chip (μPLOC) systems have gained significant attention as affordable and portable miniaturized platforms for rapid chemical and biological analysis. The intrinsic characteristics of paper, including passive fluid transport, porosity, and biocompatibility, enable the development of miniaturized sensors for decentralized testing in diverse environments. To unlock the full analytical potential of μPLOCs, highly sensitive detection techniques are essential. Chemiluminescence (CL) sensing has emerged as a promising technique, offering high sensitivity, low background noise, and compatibility with compact, low-power detection systems. When integrated with paper-based microfluidics, CL enables visual signal generation without external excitation sources, making it ideal for resource-limited settings. This review presents recent progress in μPLOC-CL sensing platforms, including device configurations, fabrication approaches, and emerging CL systems for healthcare and environmental monitoring. Developments such as nanomaterial-based signal amplification, novel CL probes, improved spatiotemporal resolution control for multiplexing, and smartphone-based readouts are elucidated. Additionally, recent advances in information and communication technology-enabled diagnostic devices are highlighted. Key challenges include reagent stability, matrix interferences, and the need for standardization. Future prospects lie in advanced material integration and digitalization for improved performance. μPLOC-CL sensing systems are poised to play a vital role in point-of-care diagnostics and point-of-need monitoring in sustainable real-world applications.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145193740","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}
LuminescencePub Date : 2025-09-27DOI: 10.1002/bio.70322
Kai Li, Xin Deng, Meizhu Xie, Siyuan Qiu, Mingfeng Fan, Canze Zheng, Huanyong Li, Miao Meng, Ming Chen, Ben Zhong Tang
{"title":"Co-Assembly Into a Hydrogen-Bonded Organic Framework With 2D Channels as a Fluorescent Probe of Aniline","authors":"Kai Li, Xin Deng, Meizhu Xie, Siyuan Qiu, Mingfeng Fan, Canze Zheng, Huanyong Li, Miao Meng, Ming Chen, Ben Zhong Tang","doi":"10.1002/bio.70322","DOIUrl":"https://doi.org/10.1002/bio.70322","url":null,"abstract":"<div>\u0000 \u0000 <p>Luminescent hydrogen-bonded organic frameworks (HOFs) show a great promise in sensing and imaging applications; however, their properties are highly related to the interior building units. On the other hand, most HOFs are only obtained with a simple porous structure, letting the development of the HOFs with rich porous architectures remain a challenge. In this work, we fabricate a HOF through a co-assembly of an aggregation-induced emission (AIE) unit of tetracarboxyl-functionalized tetraphenylpyrazine (TPP-4COOH) and 1,2-di(4-pyridyl)ethane (DPE). The strong supramolecular interactions between the functional groups in the TPP-4COOH and DPE are vital to the formation of the HOF with rare two-dimensional channels. As inherited by the AIE effect of TPP-4COOH, the HOF displays an obvious deep-blue emission. Combined with the emission property and porous structure of the HOF, as well as the unique electronic property of the introduced AIE unit, it can fluorescently detect aniline with an excellent performance. This work not only provides a clue for designing the HOFs with a rich porous structure but also highlights the role of tetraphenylpyrazine in designing the functional HOFs.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145146626","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":"Broadband and High Efficiency Near-Infrared Emission in Cr3+-Doped ZnWO4 Phosphors for Spectroscopic Applications","authors":"Jiamin Li, Zhongyu Tong, Yuqing Yan, Feifeng Huang, Guanyu Zhu, Huanping Wang, Shuangbin Ma, Feiting Huang, Degang Deng","doi":"10.1002/bio.70320","DOIUrl":"10.1002/bio.70320","url":null,"abstract":"<div>\u0000 \u0000 <p>The increasing demand for near-infrared phosphor-converted LEDs (NIR pc-LEDs) has spurred extensive research on broadband NIR phosphors. A series of Cr<sup>3+</sup>-doped ZnWO<sub>4</sub> phosphors exhibiting broadband NIR emission was synthesized via a high-temperature solid-phase method. The photoluminescence (PL) excitation (PLE) spectrum of ZnWO<sub>4</sub>: Cr<sup>3+</sup> exhibits two absorption bands in the 200–400 nm and 400–600 nm ranges, which match well with near-ultraviolet and blue LED chips. Under excitation, the PL spectrum shows a broad NIR emission extending from 700 to 1400 nm, with a full width at half maximum (FWHM) of approximately 210 nm. The internal quantum efficiency (IQE) was measured to be 55.36%. At 373 K, the integrated emission intensity of ZnWO<sub>4</sub>: 0.05Cr<sup>3+</sup> is about 47.5% of that at room temperature (RT). Additionally, a prototype NIR pc-LED device was fabricated by embedding the ZnWO<sub>4</sub>: 0.05Cr<sup>3+</sup> phosphor into a silicone matrix and coupling it with a 450-nm blue LED chip. The device delivered an output power of 17.12 mW at a 140-mA driving current and a photoelectric conversion efficiency of 14.42% at 20 mA. These results demonstrate the promising potential of this NIR pc-LED for practical applications such as night vision and vein imaging.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145092910","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}
LuminescencePub Date : 2025-09-19DOI: 10.1002/bio.70316
Ananya Chakraborty, Shireen Aman, Shubhra Mishra, Neha Dubey, Janita Saji, D. S. Kshatri, Vikas Dubey
{"title":"Synthesis and Characterization of Eu2+/Nd3+ Activated CaSi2O5 Phosphor for Bioimaging Applications","authors":"Ananya Chakraborty, Shireen Aman, Shubhra Mishra, Neha Dubey, Janita Saji, D. S. Kshatri, Vikas Dubey","doi":"10.1002/bio.70316","DOIUrl":"10.1002/bio.70316","url":null,"abstract":"<div>\u0000 \u0000 <p>The advancement of non-invasive diagnostic tools has propelled the development of luminescent nanomaterials with enhanced imaging capabilities. In this study, Eu<sup>2+</sup>/Nd<sup>3+</sup> codoped CaSi<sub>2</sub>O<sub>5</sub> phosphors were synthesized via a conventional solid-state reaction route under a reducing environment to explore their potential for bioimaging applications. Calcium silicate, known for its intrinsic biocompatibility, served as the host matrix, whereas Eu<sup>2+</sup> acted as the primary luminescent centre and Nd<sup>3+</sup> was used as the near-infrared (NIR) sensitizer to support deep-tissue excitation. Structural analysis via X-ray diffraction (XRD) verified the formation of a triclinic crystal structure and the average crystallite size was validated through both Scherrer equation and Williamson–Hall analyses. Field emission gun scanning electron microscopy (FEG-SEM) images revealed flower-like microstructures with embedded fine white particles. Energy-dispersive X-ray spectroscopy (EDX) detected the existence of expected chemical components of the phosphor, whereas Fourier-transform infrared (FTIR) spectra provided evidence of successful dopant incorporation through characteristic vibrations corresponding to Ca–O, Si–O–Si, Eu–O and Nd–O bonds. Photoluminescence studies showed an excitation spectrum with distinct and intense absorption bands within the range of 700–1000 nm, attributed to the 4f–4f transitions of Nd<sup>3+</sup> ions, and upon excitation at approximately 800 nm, the phosphor exhibited dual emission bands around 410 and 440 nm with optimal intensity corresponding to the characteristic 4f<sup>6</sup>5d<sup>1</sup> → 4f<sup>7</sup> transitions of Eu<sup>2+</sup>. The afterglow decay analysis showed persistent luminescence exceeding 15 min, and CIE chromaticity analysis confirmed that the emission lies within the blue spectral range (<i>x</i> = 0.155, <i>y</i> = 0.059), indicating high potential for background-free bioimaging with high chromatic accuracy. These findings suggest that Eu<sup>2+</sup>/Nd<sup>3+</sup> doped CaSi<sub>2</sub>O<sub>5</sub> can be a promising luminescent material for advanced biomedical imaging applications.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145087923","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}