Journal of Fluorescence最新文献_第5页

Solvatochromic Study of Coumarin in Pure and Binary Solvents with Computational Insights into Dipole Moment, Reactivity, and Stabilization Energy. 香豆素在纯溶剂和二元溶剂中的溶剂致变色研究及其偶极矩、反应性和稳定能的计算见解。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-04 DOI: 10.1007/s10895-025-04345-4

Srinath, Shivakumar Chillargikar, S M Hanagodimath

引用次数: 0

New Electron Donor Acceptor Carbazole-Based Fluorescent Chromophores: Synthesis, Molecular Modelling and Antimicrobial Activity. 新型电子给受体咔唑荧光发色团：合成、分子模拟和抗菌活性。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-03 DOI: 10.1007/s10895-025-04379-8

Nuha M Halawani, Abrar Bayazeed, Shadiah Albalawi, Wafa Mazi, Arwa Alharbi, Matokah M Abualnaja, Hana M Abumelha, Nashwa M El-Metwaly

{"title":"New Electron Donor Acceptor Carbazole-Based Fluorescent Chromophores: Synthesis, Molecular Modelling and Antimicrobial Activity.","authors":"Nuha M Halawani, Abrar Bayazeed, Shadiah Albalawi, Wafa Mazi, Arwa Alharbi, Matokah M Abualnaja, Hana M Abumelha, Nashwa M El-Metwaly","doi":"10.1007/s10895-025-04379-8","DOIUrl":"https://doi.org/10.1007/s10895-025-04379-8","url":null,"abstract":"The synthetic methodology of the desired chromophores, benzothiazolyl-carbazole-cyanoacetanilide 6a-c, was finally involved a condensation reaction of 6-benzothiazolyl-9-hexyl-9H-carbazole-3-carbaldehyde 4 with three distinct substituted cyanoacetanilide compounds 5a-c. In DMSO, the synthesized chromophores' absorption and emission spectra presented valuable Stokes' shift ( <math><mrow><mi>Δ</mi> <mover><mi>ν</mi> <mo>¯</mo></mover> </mrow> </math> = 4782-3680 cm-1). The DFT calculations of DMSO solvated ground and excite states (So and S1) of derivatives 6a-c showed that the benzothiazole and N-phenyl cyanoacrylamide served as electron releasing and receiving portions, respectively, and HOMO-LUMO charge-transfer (CT) could be denoted as donor-π-acceptor transition. Moreover, the conjugates 6a-c absorption (So → S1) and emission (S1 → So) spectra have been simulated in DMSO using the TD-DFT/B3LYP and compared with the experimental spectra. Moreover, the chromophores' antimicrobial effectiveness was investigated through the inhibition zone (IZ) and minimum inhibitory concentration (MIC) techniques, in comparison to the reference drugs. The results showed that the chromophore 6b demonstrated the lowest MIC value (6.25 μg/mL) towards S. aureus, B. subtilis, and E. coli, suggesting its probable as a wide-spectrum antibacterial agent. Moreover, molecular docking study with the target protein PDB: 1BDD showed that conjugate 6b established the strongest bindings affinity, however conjugate 6a disclosed a moderate binding.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144208707","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

Alkynyl-Iminopyridine-Based Trinuclear Ni(II), Zn(II), Cd(II), and Cu(II) Complexes: Structural, Electrochemical, Luminescence and Nonlinear Optical Properties. 烷基亚氨基吡啶基三核Ni（II）、Zn（II）、Cd（II）和Cu（II）配合物：结构、电化学、发光和非线性光学性质

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-02 DOI: 10.1007/s10895-025-04381-0

Namita H Naiknaware, Ajit H Deshmukh, Ashwini S Patil, Sanjay S Chavan

{"title":"Alkynyl-Iminopyridine-Based Trinuclear Ni(II), Zn(II), Cd(II), and Cu(II) Complexes: Structural, Electrochemical, Luminescence and Nonlinear Optical Properties.","authors":"Namita H Naiknaware, Ajit H Deshmukh, Ashwini S Patil, Sanjay S Chavan","doi":"10.1007/s10895-025-04381-0","DOIUrl":"https://doi.org/10.1007/s10895-025-04381-0","url":null,"abstract":"A new series of alkynyl-functionalized trinuclear metal complexes, with the general formula [M₃(L1/L2)(Cl)₆] (M = Ni(II), Zn(II), Cd(II), Cu(II)), were synthesized using alkynyl-functionalized iminopyridine ligands L1 and L2. The complexes were characterized by various techniques, including FTIR, NMR, ESI-MS, UV-Vis, ESR, TGA, PXRD, and SEM. All synthesized complexes exhibit absorption in the visible region, primarily attributed to metal-to-ligand charge transfer (MLCT) and intra-ligand charge transfer (ILCT) transitions. Electrochemical investigations of the Ni(II) and Cu(II) analogues reveal quasireversible redox behavior. EPR spectral analysis of the Cu(II) complexes indicates a significant degree of covalency in the metal-ligand interactions. All complexes emit red luminescence at room temperature. The second harmonic generation (SHG) efficiency, evaluated via the Kurtz powder technique, highlights the potential of these complexes as promising candidates for nonlinear optical (NLO) applications.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199339","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

A Fluorescent Probe with Isovanillin-Containing Imidazole Backbone for Detecting Sulfite in Cellular Pulmonary Ventilation Protection Condition. 含异香草素咪唑骨架荧光探针检测细胞肺通气保护状态下亚硫酸盐。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-02 DOI: 10.1007/s10895-025-04389-6

Weifeng Yan, Shengyang Deng, Xiaoyun Guo, Rui Li

引用次数: 0

Unveiling the Photoluminescence Properties and Thermal stability of Blue-Greenish to Green Light Emitting Tb³⁺-Doped NaBaBi₂(PO₄)₃ Phosphors. 揭示蓝绿至绿光发射Tb3+掺杂NaBaBi2(PO4)3荧光粉的光致发光特性和热稳定性。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-02 DOI: 10.1007/s10895-025-04378-9

Kavia J Albert, S Masilla Moses Kennedy

{"title":"Unveiling the Photoluminescence Properties and Thermal stability of Blue-Greenish to Green Light Emitting Tb3+-Doped NaBaBi2(PO4)3 Phosphors.","authors":"Kavia J Albert, S Masilla Moses Kennedy","doi":"10.1007/s10895-025-04378-9","DOIUrl":"https://doi.org/10.1007/s10895-025-04378-9","url":null,"abstract":"In this work, the solid-state reaction method was employed to synthesize NaBaBi2(PO4)3 (NBBP) and Tb3+ doped NBBP samples under high temperature. X-ray diffraction confirmed phase formation, while SEM characterized surface morphology. Under the highest excitation at 378 nm, the emission spectra displayed peaks from the 5D3 and 5D4 levels, with the emission color shifting from bluish-green to green as the Tb3+ concentration was varied. The reduction in 5D3 level emission and the increase in 5D4 level intensity with higher Tb3+ concentration was due to the cross-relaxation process. The effect of Tb3+ doping concentration on PL emission intensity indicates that the optimal concentration is 6 mol%. The estimated critical distance of approximately 20.487 Å suggests that multipole-multipole interactions primarily govern the concentration quenching effect. Thermal stability analysis showed that the phosphor retained 84% of its initial luminescence intensity at 483 K, demonstrating excellent resistance to thermal quenching. The measured average lifetime in the millisecond range further supports its potential for practical applications. Additionally, temperature-dependent lifetime analysis revealed a systematic variation in lifetime values with temperature, highlighting its suitability for temperature sensing applications. The CIE color coordinates, correlated color temperature (CCT), and color purity (CP) values were also reported, offering valuable insights into the colorimetric performance of Tb3+-doped NBBP phosphors. These findings are crucial for optimizing their application in solid-state lighting technologies.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199342","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

Facile Green Synthesis of Silver Nanoparticles Using Euphorbia neriifolia Leaf Extract: A multi-spectroscopic, Calorimetric, Molecular Docking Interaction Studies with Human Serum Albumin. 利用大胡叶提取物快速绿色合成纳米银：与人血清白蛋白的多光谱、量热、分子对接相互作用研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-02 DOI: 10.1007/s10895-025-04385-w

Somenath Kundu, Basudev Shit, Samaresh Paria, Subhajit Barman, Aziza Nasrin, Putul Karan, Maidul Hossain

{"title":"Facile Green Synthesis of Silver Nanoparticles Using Euphorbia neriifolia Leaf Extract: A multi-spectroscopic, Calorimetric, Molecular Docking Interaction Studies with Human Serum Albumin.","authors":"Somenath Kundu, Basudev Shit, Samaresh Paria, Subhajit Barman, Aziza Nasrin, Putul Karan, Maidul Hossain","doi":"10.1007/s10895-025-04385-w","DOIUrl":"https://doi.org/10.1007/s10895-025-04385-w","url":null,"abstract":"A sustainable, efficient, and eco-friendly approach was developed to synthesize silver nanoparticles using Euphorbia neriifolia leaf extract. The biosynthesized Euphorbia neriifolia silver nanoparticles (ENSNPs) were comprehensively characterized using several techniques, including absorbance spectroscopy, Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, field emission scanning electron microscopy, X-ray photoelectron spectroscopy, and dynamic light scattering. ENSNPs quenched the intrinsic fluorescence of human serum albumin (HSA) with a quenching constant of 1.10 ± 0.004 × 108 M- 1 at 298.15 K, and the Time-correlated single-photon counting experiment clearly indicated that the quenching mechanism is static. Moreover, synchronous spectroscopy, 3D fluorescence spectroscopy, and circular dichroism spectra further revealed that the microenvironment of amino acid residues in HSA was slightly changed after interaction with ENSNPs. The thermodynamic investigation and docking analysis collectively showed that HSA-ENSNPs complexation was driven by hydrogen bonding, pi-alkyl interactions, and Van der Waals forces, providing insight into the nature of the binding interactions and the stability of the complex.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199340","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

A Ratiometric Fluorescence Probe Based on Silver Nanoclusters and CdSe/ZnS Quantum dots for the Detection of Hydrogen Peroxide by Aggregation and Etching. 一种基于银纳米团簇和 CdSe/ZnS 量子点的比率荧光探针，可通过聚集和蚀刻检测过氧化氢。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-06-22 DOI: 10.1007/s10895-024-03774-x

Yuanyuan Zhang, Xin Zhang, Hedan Xu, Sitian Zhao, Zirui Yang, Zijie Pi, Xiaoling Yang, Xiaoling Liao

{"title":"A Ratiometric Fluorescence Probe Based on Silver Nanoclusters and CdSe/ZnS Quantum dots for the Detection of Hydrogen Peroxide by Aggregation and Etching.","authors":"Yuanyuan Zhang, Xin Zhang, Hedan Xu, Sitian Zhao, Zirui Yang, Zijie Pi, Xiaoling Yang, Xiaoling Liao","doi":"10.1007/s10895-024-03774-x","DOIUrl":"10.1007/s10895-024-03774-x","url":null,"abstract":"In this study, a ratiometric fluorescence nanoprobe is developed for the analysis of hydrogen peroxide (H2O2). Silver nanoclusters (AgNCs) were synthesized by chemical reduction method using sodium borohydride (NaBH4) as reducing agent, and were coupled with CdSe/ZnS quantum dots (QDs) to form the ratiometric fluorescence nanoprobe silver nanoclusters-quantum dots (AgNCs-QDs). The effect of the volume ratio of CdSe/ZnS QDs to AgNCs on the fluorescence ratio of AgNCs-QDs was investigated. The fluorescence characterization results show that two emission peaks of AgNCs-QDs are located at 473 nm and 661 nm, respectively. Transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) results show that H2O2 can cause the fluorescence probe to aggregate, while etching AgNCs to produce silver ions, which together cause the fluorescence of the QDs in the ratiometric fluorescent probe to be quenched. Based on this strategy, the fluorescence intensity ratio of the two emission peaks F473/F661 exhibits a strong linear correlation with the concentration of H2O2. The detection range is 3.32 µM ~ 2.65 mM with a detection limit of 3.32 µM. In addition, the ratiometric fluorescence probe can specifically recognize H2O2 and has excellent anti-interference performance and good fluorescence stability. Importantly, the probe was utilized for the detection of H2O2 in serum, showing the possibility of the probe in clinical detection applications.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3967-3979"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141436969","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

Hesperidin/Salinomycin Combination; a Natural Product for Deactivation of the PI3K/Akt Signaling Pathway and Anti-Apoptotic Factors in KG1a Cells. 橙皮甙/丝裂霉素复方制剂；一种能使 KG1a 细胞中的 PI3K/Akt 信号通路和抗凋亡因子失活的天然产品。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-06-25 DOI: 10.1007/s10895-024-03808-4

Sina Abroon, Mohammad Nouri, Majid Mahdavi

{"title":"Hesperidin/Salinomycin Combination; a Natural Product for Deactivation of the PI3K/Akt Signaling Pathway and Anti-Apoptotic Factors in KG1a Cells.","authors":"Sina Abroon, Mohammad Nouri, Majid Mahdavi","doi":"10.1007/s10895-024-03808-4","DOIUrl":"10.1007/s10895-024-03808-4","url":null,"abstract":"AML is a highly aggressive malignant clonal disease of hematopoietic origin. Hesperidin as a polyphenol glycoside, Activates the apoptotic pathway and salinomycin as a k + selective ionophore. We examined how hesperidin and salinomycin induce pro-apoptotic effects in KG1a cells. Cells were divided into four groups; 1) control cells (CRTL), 2) cells treated with hesperidin 85 μM, 3) cells treated with 2 μM salinomycin, 4) cells treated with combination of salinomycin and hesperidin. The MTT assay was implemented to determine the IC50 of hesperidin and salinomycin in KG1a cell lines. Propidium iodide staining and flow cytometry were used to analyze the distribution of the cell cycle. The level of ROS was evaluated by fluorescent microscopy and spectrophotometry. Additionally, Akt, XIAP, Bad, and FOXO1 gene expression was analyzed by real-time PCR. Hesperidin/Salinomycin decreased the viability of KG1a leukemic cells more than Hesperidin and Salinomycin separately. Changes in the shape of apoptotic cells and rise in ROS levels were detected after Hesperidin/Salinomycin treatment. Our findings showed that following Hesperidin/Salinomycin treatment, the expression of PI3K/AKT signaling pathway related genes (AKT, PTEN and FOXO1), were in line with the destruction of KG-1a cells. Furthermore, XIAP and BAD mRNA were regulated to trigger apoptosis in cancer cells. The study discovered that hesperidin and salinomycin, could effectively hinder the PI3K/Akt signaling pathway in leukemia cancer cells. Also, the combination of hesperidin and salinomycin has the potential to be a treatment option for acute myeloid leukemia.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4005-4014"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141446344","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

Mechanistic Innovations in Fluorescent Chemosensors for Detecting Toxic Ions: PET, ICT, ESIPT, FRET and AIE Approaches. 用于检测有毒离子的荧光化学传感器的机制创新：PET、ICT、ESIPT、FRET 和 AIE 方法。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-17 DOI: 10.1007/s10895-024-03843-1

Duraisamy Udhayakumari

引用次数: 0

Synthesis of two Fluorescent Complexes and Their use as Multifunctional Nanomedicine Carriers for Rhabdomyosarcoma Treatment. 合成两种荧光复合物并将其用作治疗横纹肌肉瘤的多功能纳米药物载体

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-10 DOI: 10.1007/s10895-024-03832-4

Ping Yang, Peng Xie, Feng Lin, Tian Wang, Lian Zhang, Fei Yan

{"title":"Synthesis of two Fluorescent Complexes and Their use as Multifunctional Nanomedicine Carriers for Rhabdomyosarcoma Treatment.","authors":"Ping Yang, Peng Xie, Feng Lin, Tian Wang, Lian Zhang, Fei Yan","doi":"10.1007/s10895-024-03832-4","DOIUrl":"10.1007/s10895-024-03832-4","url":null,"abstract":"This study focuses on the design and synthesis of two novel coordination polymers (CPs), named 1 and 2, with excellent fluorescent properties. Their structures were characterized by X-ray single-crystal diffraction, revealing that both materials exhibit promising fluorescence performance, indicating their potential as fluorescent detection tools. Additionally, 1 was chosen to be combined with chitosan (CS), resulting in the successful fabrication of a biodegradable and non-toxic efficient drug carrier, termed CS-1@Cisplatin. This carrier possesses a large surface area and good solubility, enabling sustained drug release to target cells. Given that CXC motif chemokine receptor type 4 (CXCR4) is a key marker gene highly expressed in Rhabdomyosarcoma (RMS) cells and tissues, RMS was chosen as the biological model for testing. The results demonstrated that CS-1@Cisplatin effectively inhibited the invasiveness of RMS cells by significantly suppressing CXCR4 expression. Therefore, the system shows great potential for applications in RMS treatment, biometrics, and drug delivery, particularly in its unique advantage of targeting RMS by inhibiting the key marker gene CXCR4.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4313-4320"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141563479","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