LuminescencePub Date : 2025-05-23DOI: 10.1002/bio.70202
L. Torrisi, M. Cutroneo, A. Torrisi, D. Manno, A. Serra
{"title":"Synthesis of High Fluorescent Carbon Dots by Laser Ablation of Bay Leaves in Biocompatible Solutions","authors":"L. Torrisi, M. Cutroneo, A. Torrisi, D. Manno, A. Serra","doi":"10.1002/bio.70202","DOIUrl":"https://doi.org/10.1002/bio.70202","url":null,"abstract":"<p>A green dispersion of carbon dots (CDs) can be obtained by laser irradiation of bay leaves in liquids. The CDs synthesis is obtained using an Nd:YAG laser irradiating multilayered leaves placed into a phosphate-buffered saline (PBS) solution. The nanoparticle generation and their functionalization by the solution salts produce a high-intensity dispersion luminescence in the visible region, which is induced by UV excitation. The ablation uses ns pulses with 100 mJ energy employed with a 1 Hz repetition rate focused on the vegetal target. Plasma investigations, UV–visible, and IR optical spectroscopies were employed. Morphological, optical properties, and other characteristics of the dispersion are presented and discussed. The synthesized CDs showed an absorption peak at 274 nm to confirm the p–p* transition of the carbon core state, while the CD particles were spherical with a size of less than 10 nm. The CDs fluorescent emission is in the blue region, around 472 nm, upon excitation at 365 nm. The synthesized CDs showed stability over a long period (3 months). This study provides an inexpensive, green, and simple method for CDs synthesis for important biocompatible dispersion applications in different scientific fields, especially from biology to medicine.</p>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bio.70202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118189","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}
{"title":"γ-Cyclodextrin Functionalized Supramolecular Architectured Molecular Logic Functions and Password Security System Powered by pH","authors":"Saikat Samanta, Chinmoy Mahapatra, Ujjal Kanti Roy, Tapas Majumdar, Arabinda Mallick","doi":"10.1002/bio.70194","DOIUrl":"https://doi.org/10.1002/bio.70194","url":null,"abstract":"<div>\u0000 \u0000 <p>In the recent past, optical detection devices have become an analytical tool of attention in diverse meadows of science. The search for new ways to recognize and measure diverse phase of compounds has converted this inquisitiveness into a requisite. Molecules that can be toggled by pH have played a significant role in the construction, progress, and manifestation of molecular logic. Usually, pH responsive molecules are switched between bistable/multistable states (different chemical structures) through variation in pH. In our previous studies, 3,3′-bis-indolyl(phenyl)methane (BIPM) molecules in water were found to form large molecular self-aggregates that disaggregated in presence of γ-cyclodextrin molecules through inclusion complexation. In the present study, we propose a unique angle on pH-triggered logic—that is, to use different input and output channels enabled by nonlinear optical processes. We visualize that photo-induced dynamics (self-assemble to disassemble and reassemble) in a γ-CD functionalized supramolecular compound initiated and the observable change by altering pH can offer a stage for installing and processing logic operations. The phenomena of self-assemble to disassemble and re-Iassemble was confirmed by fluorescence anisotropy and scanning electron microscopy (SEM). This new type idea has thrilling potential, as well as several attractive challenges.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108958","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 : 2025-05-21DOI: 10.1002/bio.70196
Mahmoud T. Abdu
{"title":"Review of Photoluminescent–Photochromic Nanocomposites Containing Immobilized Inorganic Lanthanide-Doped Strontium Aluminate Nanoparticles","authors":"Mahmoud T. Abdu","doi":"10.1002/bio.70196","DOIUrl":"https://doi.org/10.1002/bio.70196","url":null,"abstract":"<div>\u0000 \u0000 <p>Synthesizing photoluminescent–photochromic nanocomposites is a broad and active research area with many articles published in recent years. Literature lacks a systematic review of nanocomposites that combine both photoluminescence and photochromism at once. This review article focused on synthesizing, properties, and selected applications of photoluminescent–photochromic nanocomposites. These two characteristics were brought about together in the nanocomposites by the immobilization of inorganic lanthanide-doped strontium aluminate nanoparticles (LSANs) in polymeric or ceramic matrices. The paper began by relating nanotechnology to composite materials and proceeded to discuss the concepts of luminescence and photochromism. Eventually, three main applications of such a class of nanocomposites were discussed in detail. The applications considered were smart windows, smart coatings, and anticounterfeiting. In all applications, the addition of the LSANs to the matrix material imparted magnificent enhancement of the photoluminescent and photochromic characteristics. Furthermore, the presence of LSANs in these nanocomposites caused remarkable enhancement in other properties such as mechanical properties, hydrophobicity, and protection against UV radiation.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108862","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 : 2025-05-21DOI: 10.1002/bio.70192
{"title":"Correction to “An In Silico Analysis on the Photoproteins Mnemiopsin 1 and Mnemiopsin 2 to Explain the Experimental Results”","authors":"","doi":"10.1002/bio.70192","DOIUrl":"https://doi.org/10.1002/bio.70192","url":null,"abstract":"<p> <span>Asadi Sofilar, A</span>, <span>Shirdel, A</span>, <span>Jafarian, V</span>, <span>Khalifeh, K</span>. <span>An In Silico Analysis on the Photoproteins Mnemiopsin 1 and Mnemiopsin 2 to Explain the Experimental Results</span>. <i>Luminescence</i>. <span>2023</span>: <span>38</span> (<span>11</span>): <span>1946</span>–<span>1954</span>.</p><p>The values on the X-axis of Figure 1 were inadvertently multiplied by a factor of 10 during the modeling of the activity data to calculate the decay rate constant. This presentation does not affect the overall conclusion of the study, since the decay rate constants depend on the trend of the graphs. However, to ensure the accuracy and integrity of the scientific record, the caption of Figure 1 should be updated, by adding the following explanatory statement at the end of Figure caption:</p><p>“Note: The values on the X-axis are multiplied by a factor of 10.”</p><p>We apologize for this error.</p>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bio.70192","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100625","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}
LuminescencePub Date : 2025-05-21DOI: 10.1002/bio.70199
M. Isik, T. Yildirim, N. M. Gasanly
{"title":"Thermoluminescence Behavior of Yttrium-Doped ZnO Nanoparticles Synthesized by Sol–Gel Method","authors":"M. Isik, T. Yildirim, N. M. Gasanly","doi":"10.1002/bio.70199","DOIUrl":"https://doi.org/10.1002/bio.70199","url":null,"abstract":"<p>The development of efficient thermoluminescent materials is essential for precise radiation dosimetry. In this study, yttrium-doped ZnO (Y:ZnO) nanoparticles were synthesized and systematically analyzed to explore their structural and thermoluminescence (TL) properties. X-ray diffraction confirmed the preservation of the hexagonal ZnO phase, while transmission electron microscopy revealed well-dispersed nanoparticles. TL measurements exhibited a strong dose-dependent response, with glow curves showing multiple peaks associated with distinct trapping centers. Deconvolution analysis identified three primary trap levels with activation energies of 0.77, 1.12, and 1.29 eV, indicating the presence of deep and shallow traps. The TL intensity followed a linear trend with radiation dose, suggesting the suitability of Y:ZnO nanoparticles for dosimetric applications. Photoluminescence (PL) analysis was conducted to investigate the influence of yttrium doping on the optical properties of ZnO nanoparticles, and it was found that Y doping significantly enhanced defect-related emissions. These findings highlight the potential of Y:ZnO as a promising candidate for advanced radiation sensing technologies.</p>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bio.70199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108861","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}
LuminescencePub Date : 2025-05-19DOI: 10.1002/bio.70189
Bo Jiang, Yun Cui Zhang, Kun Zhang, Zong Han Mu, Ao Liu, Chen Xu
{"title":"Design of Machine Vision Detection System for Impurities in Liquid Bottles","authors":"Bo Jiang, Yun Cui Zhang, Kun Zhang, Zong Han Mu, Ao Liu, Chen Xu","doi":"10.1002/bio.70189","DOIUrl":"https://doi.org/10.1002/bio.70189","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper proposes an intelligent detection system for impurities in liquids based on machine vision. The system focuses on visual information acquisition and target recognition for impurities such as hair, scrap, and grain. In the experiments, lighting systems are compared to reduce irrelevant information, and the optimized top lighting is chosen to effectively capture impurity images and create a dataset of 3000 images. The improved visual enhancement (VE)-YOLOv8 deep learning detection algorithm incorporates a lightweight efficient channel attention (ECA) mechanism into the model's neck and integrates the Swin Transformer with a deformable attention mechanism into the backbone module to enhance the network's feature extraction capabilities and improve detection accuracy. In the optical comparison experiments, the analyses showed mean average precision (mAP 50) values of 87.3%, 91.5%, 97.1%, and 91.5% for the common, back, top, and bottom conditions, respectively. The mAP 50 and mAP 50–90 of VE-YOLOv8 are improved by 1.4% and 5.6% compared with the original YOLOv8 in optimized top lighting conditions. This research combines the optical lighting technique with the target detection algorithm to enhance the identifiable accuracy of impurities in liquid bottles.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085037","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 : 2025-05-19DOI: 10.1002/bio.70198
Seba Merin Vinod, Sangeetha Murugan Sreedevi, Anju Krishnan, Vadakke Purakkal Sruthi, Vasanthi Rajaraman, V. L. Mangesh, Amel Gacem, Krishna Kumar Yadav, Hany W. Darwish, Tamizhdurai Perumal, Kumaran Rajendran
{"title":"Interaction of a Disaccharide, Lactose With Resorcinol-Based Acridinedione Dyes in Water: A Combined Study Involving Photophysical, Electrochemical, and Theoretical Approach","authors":"Seba Merin Vinod, Sangeetha Murugan Sreedevi, Anju Krishnan, Vadakke Purakkal Sruthi, Vasanthi Rajaraman, V. L. Mangesh, Amel Gacem, Krishna Kumar Yadav, Hany W. Darwish, Tamizhdurai Perumal, Kumaran Rajendran","doi":"10.1002/bio.70198","DOIUrl":"https://doi.org/10.1002/bio.70198","url":null,"abstract":"<div>\u0000 \u0000 <p>The interaction of lactose with two structurally distinct resorcinol-based acridinedione (<span>AD</span>-res) dyes accompanied with variation in their photophysical properties was carried out in aqueous solution. The introduction of lactose to ADR1 dye hardly influenced the intramolecular charge transfer (ICT) absorption maxima; however, a clear isosbestic point exists between the dye and disaccharide elucidating a ground state complex formation. The ground state characteristics of ADR2 dye in the presence of lactose are entirely different from those of ADR1 dye. In the case of ADR1 dye, fluorescence enhancement (FE) occurs, and fluorescence quenching (FQ) occurs in the case of ADR2 dye. Lactose in aqueous solution promotes multiple microenvironments that differ in hydrogen-bonding patterns, such that a formidable variation in the fluorescence lifetime was observed. The variation in the microenvironment is due to the presence of more water molecules with fewer numbers of lactose surrounding the dye and vice versa, ascertained through fluorescence lifetime studies. Similarly, in electrochemical studies, the introduction of lactose results in a shift in the oxidation and reduction potentials of both <span>AD</span>R1 and ADR2 dyes. This shift correlates with combined conventional hydrogen bonding (cHB) and hydrophobic interactions, supporting the variation in the excited-state nature of the AD-res dyes.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091579","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 : 2025-05-19DOI: 10.1002/bio.70195
Shittu Abdullahi, Aznan Fazli Ismail, Ahmed Alshahrie, Mohammed M. Damoom, Essam Banoqitah, Numan Salah
{"title":"Effects of Neutron and Gamma Irradiation on Epoxy/Dy Nanocomposite Sheets for Potential Radiation Dosimetry and Optoelectronic Device Applications","authors":"Shittu Abdullahi, Aznan Fazli Ismail, Ahmed Alshahrie, Mohammed M. Damoom, Essam Banoqitah, Numan Salah","doi":"10.1002/bio.70195","DOIUrl":"https://doi.org/10.1002/bio.70195","url":null,"abstract":"<div>\u0000 \u0000 <p>Epoxy materials are known for their versatile applications across numerous fields. Investigation of its optical properties, particularly when infused with lanthanides like dysprosium (Dy), and its behaviour under ionising radiation is still underexplored. We synthesised Dy-doped nanocomposites with various Dy<sup>3+</sup> concentrations, which improved their photoluminescence (PL) and radiation-responsive characteristics. Numerous techniques characterised the synthesised epoxy/Dy nanocomposite. The PL emission increased drastically with increasing Dy concentration, resulting in an almost 19-fold increase. A significant change was observed when the epoxy/Dy nanocomposite sheets were exposed to neutron and gamma radiation with radiation doses ranging from 20 to 200 mGy. Gamma and neutron response tests showed distinctly different behaviour in pure epoxy (a 0.36/mGy increase in PL intensity following gamma exposure) compared to Dy-doped nanocomposites (a 0.23 and 0.18/mGy decrease in PL intensity for gamma and neutron exposure, respectively). Moreover, the nanocomposite sheets showed good PL emission intensity and linear stability for 1 month after irradiation, indicating their potential for long-term applications. Adding Dy<sup>3+</sup> ions to the epoxy matrix enhances PL emission intensities, and irradiation improves PL emission stability and their nearly excellent linear dose response. Therefore, this study's epoxy/Dy nanocomposite sheets showed potential applications in radiation dosimetry and optoelectronic devices.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085038","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 : 2025-05-19DOI: 10.1002/bio.70197
Akesh Kumar, Nameeta Brahme, D. P. Bisen, Kanchan Tiwari, Dipti Sahu
{"title":"Unveiling Structural, Morphological, Optical Properties and Photoluminescence of Novel Eu3+ and Tb3+ Doped Na2MoO4.2H2O Phosphor","authors":"Akesh Kumar, Nameeta Brahme, D. P. Bisen, Kanchan Tiwari, Dipti Sahu","doi":"10.1002/bio.70197","DOIUrl":"https://doi.org/10.1002/bio.70197","url":null,"abstract":"<div>\u0000 \u0000 <p>The present paper explores the luminescence response of trivalent rare earth ions doped novel Na<sub>2</sub>MoO<sub>4</sub>.2H<sub>2</sub>O phosphors for its possibilities towards the advancement of currently available red and green phosphors. The work presents an original research study on Na<sub>2</sub>MoO<sub>4</sub>.2H<sub>2</sub>O phosphors and provides a brief overview of molybdate-based phosphors. Optically efficient trivalent terbium and europium-activated Na<sub>2</sub>MoO<sub>4</sub>.2H<sub>2</sub>O phosphors are synthesized using the conventional solid-state reaction method. It was found through XRD that the samples belong to the orthorhombic crystal system and have the space group P<sub>bca</sub>. Raman spectra show all the major peaks are rising due to the MoO4<sup>2−</sup> group. The SEM images reveal differences in particle morphology between the undoped and doped samples. UV–Visible spectroscopy showed the interaction of samples with light and the bandgap energies were calculated. We record the excitation and emission spectra to see how much red and green light they emit for Eu and Tb doped samples respectively. The calculated CIE coordinates, CCT and colour purity show that the phosphor is similar to commercially available red and green phosphors. Along with that, this study shows the energy transfer between MoO4 and rare earth dopants, which can help us figure out how to improve emission efficiency.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085036","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 : 2025-05-14DOI: 10.1002/bio.70181
C. Salma, B. Hemalatha Rudramadevi
{"title":"Tuning the Photoluminescence of Eu3+-Doped PVA/PVP Polymer Films: A Study of Red Emission Characteristics","authors":"C. Salma, B. Hemalatha Rudramadevi","doi":"10.1002/bio.70181","DOIUrl":"https://doi.org/10.1002/bio.70181","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to develop a sustainable blend of polymer films made from polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP), doped with varying concentrations of Eu<sup>3+</sup> ions (0.1, 0.2, 0.3, 0.4, and 0.5 wt%), to explore their structural, optical, and photoluminescence (PL) properties for potential applications in lasers and display devices. The films were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV–visible-NIR spectroscopy, and PL. The XRD patterns revealed a reduction in the semicrystalline structure with the introduction of Eu<sup>3+</sup> ions, indicating a disruption of the polymer matrix. FT-IR analysis revealed the formation of a distinct band between PVA/PVP and Eu<sup>3+</sup>, confirming the successful ion doping. UV–Vis–NIR analysis provided insight into optical constants, such as the absorption coefficient, indirect energy gap, and refractive index. PL studies showed red fluorescence at 615 nm, corresponding to the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition of the Eu<sup>3+</sup> ions. Additionally, the emission decay time slightly decreases with increasing Eu<sup>3+</sup> concentration. The optimal doping concentration of 0.3 wt% Eu<sup>3+</sup> ions in the PVA/PVP blend polymer films provides enhanced red fluorescence and is suitable for the development of laser and display applications.</p>\u0000 </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"40 5","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944845","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}