Journal of Fluorescence最新文献_第7页

Correction: "Off/On" Fluorescent Probe based on Aggregation-Induced Quenching of ZnO-Quantum dots for Determination of Ara-C: Pharmacokinetic Applications, Adsorption Kinetics & Green Profile Assessment. 校正：基于zno量子点聚集诱导猝灭的“关/开”荧光探针用于测定Ara-C：药代动力学应用，吸附动力学和绿色轮廓评估。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-02 DOI: 10.1007/s10895-025-04351-6

Marwa R El-Zahry, Rania S Ibrahim, Hanaa M Abd El-Wadood, Horria A Mohamed

引用次数: 0

Fluorescence Quenching and Electron Transfer Dynamics of a Thiophene-Substituted 1,3,4-Oxadiazole Derivative with Nitroaromatic Compounds. 噻吩取代的1,3,4-恶二唑衍生物与硝基芳香族化合物的荧光猝灭和电子转移动力学。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-02 DOI: 10.1007/s10895-025-04333-8

Praveenakumara A Valmiki, M S Thippeswamy, Lohit Naik, C V Maridevarmath, G H Malimath

{"title":"Fluorescence Quenching and Electron Transfer Dynamics of a Thiophene-Substituted 1,3,4-Oxadiazole Derivative with Nitroaromatic Compounds.","authors":"Praveenakumara A Valmiki, M S Thippeswamy, Lohit Naik, C V Maridevarmath, G H Malimath","doi":"10.1007/s10895-025-04333-8","DOIUrl":"https://doi.org/10.1007/s10895-025-04333-8","url":null,"abstract":"This study investigates the fluorescence quenching behavior of a newly synthesized thiophene-substituted 1,3,4-oxadiazole derivative, 2-(4-(4-vinyl phenyl)phenyl)-5-(5-(4-vinyl phenyl)thiophene-2-yl)-1,3,4-oxadiazole (TSO), in the presence of various nitroaromatic compounds (NACs), including 2-nitrotoluene, 4-nitrotoluene, nitrobenzene, and picric acid (2,4,6-trinitrophenol). The interactions were examined in an ethanol medium at room temperature using steady-state and time-resolved fluorescence spectroscopy. Steady-state fluorescence analysis revealed a non-linear Stern-Volmer (SV) plot exhibiting positive deviation, while time-resolved measurements displayed a linear relationship. To interpret these findings, ground-state complex formation and the sphere-of-action static quenching models were applied. The study determined key quenching parameters, including the Stern-Volmer constant, quenching rate constant, static quenching constant, and sphere-of-action radius. Notably, fluorescence quenching efficiency increased with the number of NO2 groups in the NACs.Electrochemical analysis, complemented by Density Functional Theory (DFT) calculations, confirmed that electron transfer was the primary quenching mechanism. Furthermore, binding site analysis demonstrated a 1:1 binding stoichiometry between TSO and NACs, with picric acid exhibiting the highest binding affinity. Given the growing interest in fluorescence-based sensing approaches, these findings contribute valuable insights into the development of advanced sensors for detecting nitroaromatic pollutants and explosive residues.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144028976","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 Novel Near-Infrared Fluorescent Probe for the Detection of Endogenous Peroxynitrite (ONOO^-) in Living Cells. 用于检测活细胞中内源性过亚硝酸盐（ONOO-）的新型近红外荧光探针。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-05-09 DOI: 10.1007/s10895-024-03733-6

Jinting Shang, Wanxia Gao, Junluan Cai, Yan Yang, Chen Wang, Na Zhao, Haiping Wang, Yibin Zhang

引用次数: 0

Synthesis of Bio-Base Fluorescence Carbon Dots for Selective Detection of Tartrazine and Sunset Yellow in Food Samples. 合成用于选择性检测食品样品中酒石酸和日落黄的生物基荧光碳点

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-05-24 DOI: 10.1007/s10895-024-03758-x

RongGui Zhu, Lei Jin, Bing Yang, Yuan Ma, You Zhou, RongDan Xiao, YiJie Meng, Ye Hou, BenTing Xie, Xiu Juan Jiang

{"title":"Synthesis of Bio-Base Fluorescence Carbon Dots for Selective Detection of Tartrazine and Sunset Yellow in Food Samples.","authors":"RongGui Zhu, Lei Jin, Bing Yang, Yuan Ma, You Zhou, RongDan Xiao, YiJie Meng, Ye Hou, BenTing Xie, Xiu Juan Jiang","doi":"10.1007/s10895-024-03758-x","DOIUrl":"10.1007/s10895-024-03758-x","url":null,"abstract":"A green, economical and simple method for the preparation of water-soluble, high-fluorescent carbon quantum dots (CQDs) has been developed via hydrothermal process using pomelo peels as carbon source. The synthesized CQDs were characterized by transmission electron microscopy (TEM), X-ray diffraction(XRD), Fourier transform infrared spectroscopy (FTIR), UV - vis absorption spectra and fluorescence spectrophotometer. The results reveal that the as-prepared C-dots were spherical shape with an average diameter of 2.64 nm and emit bright blue photoluminescence (PL) with a quantum yield of approximately 3.63%. The surface of the C-dots was rich in hydroxyl groups and presented various merits including excellent photostability, low toxicity, and satisfactory solubility. Additionally, we found that two widely used synthetic food colorants, tartrazine and sunset yellow, could result in a strong fluorescence quenching of the C-dots, The possible mechanisms are caused by different ratios of inner filter and static quenching effects. According to this property, This study attempts to establish an analytical method for the determination of tartrazine and sunset yellow using carbon quantum dots as fluorescent probe. A linear relationship was found in the range of 0-100 µM tartrazine and sunset yellow with the detection limit(3σ/k) of 0.65 nM and 1.7 nM. The relative standard deviation (RSD) was 3.5% (tartrazine) and 3.0% (sunset yellow).This observation was further successfully applied for the determination of tartrazine and sunset yellow in food samples collected from local markets, and the recovery rates of the two ranges from 79% to 117.8 and 81 -103.5%, respectively. suggesting its great potential toward food routine analysis.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3415-3425"},"PeriodicalIF":2.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141093233","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

Sensing of Co²⁺ and Cu²⁺ Ions Using Dimethylamino-functionalized Poly(azomethine-1,3,4-oxadiazole)s. 使用二甲基氨基官能化聚（偶氮甲基-1,3,4-恶二唑）传感 Co2+ 和 Cu2+ 离子。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-06-05 DOI: 10.1007/s10895-024-03772-z

Mihaela Homocianu, Elena Hamciuc, Corneliu Hamciuc

{"title":"Sensing of Co2+ and Cu2+ Ions Using Dimethylamino-functionalized Poly(azomethine-1,3,4-oxadiazole)s.","authors":"Mihaela Homocianu, Elena Hamciuc, Corneliu Hamciuc","doi":"10.1007/s10895-024-03772-z","DOIUrl":"10.1007/s10895-024-03772-z","url":null,"abstract":"The ability of OxT and OxFl azomethines to recognize metal ions in THF solutions was investigated using UV-vis absorption techniques. Various metal ions, including Cd2+, Hg2+, Co2+, Sn2+, Cu2+, Ni2+, Zn2+ and Ag+, were tested. The absorption spectra revealed two distinct π-π* transition bands in the 273-278 nm and 330-346 nm wavelength ranges. Additionally, OxFl displayed an absorption peak at 309 nm, attributed to the fluorene group. Spectral titrations were used to study the fluorescence behavior in the presence of these metal ions. The results showed significant quenching with Co2+ and Cu2+ ions, while other metal ions had minimal effects on the fluorescence intensity. The quenching mechanism was further analyzed using the Stern-Volmer and Lehrer equations, and the binding constants ( <math><msubsup><mi>K</mi> <mrow><mi>b</mi></mrow> <mi>fl</mi></msubsup> </math> ) were calculated using the Benesi-Hildebrand relations. The results confirm that Co2+ has a 1:2 stoichiometry and Cu2+ has a 1:1 stoichiometry, indicating the strong affinity of OxFl and OxT for these ions. The negative values of ΔG (Gibbs free energy) suggest that complex formation occurs spontaneously at room temperature.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3495-3505"},"PeriodicalIF":2.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12095355/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141248231","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

L-Arginine Doped Carbon Nanodots from Cinnamon Bark for Improved Fluorescent Yeast Cell Imaging. 肉桂皮中掺入 L-精氨酸的碳纳米点用于改进酵母细胞荧光成像。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-06-13 DOI: 10.1007/s10895-024-03799-2

Urvi M Lad, Dhruti J Dave, Bhumi N Desai, Devesh H Suthar, Chetan K Modi

{"title":"L-Arginine Doped Carbon Nanodots from Cinnamon Bark for Improved Fluorescent Yeast Cell Imaging.","authors":"Urvi M Lad, Dhruti J Dave, Bhumi N Desai, Devesh H Suthar, Chetan K Modi","doi":"10.1007/s10895-024-03799-2","DOIUrl":"10.1007/s10895-024-03799-2","url":null,"abstract":"In this study, we present an economical and efficient synthesis method for carbon nanodots (CNDs) derived from cinnamon bark wood powder, with the incorporation of L-arginine as a dopant at varying ratios (Cinnamon : L-Arginine - 1:0.25, 1:0.5) via a hydrothermal reaction. Extensive structural and optical characterization was conducted through techniques such as FTIR, XRD, HR-TEM, DLS, UV-Vis, and PL spectra, providing a comprehensive understanding of the properties of CNDs and doped-CNDs. Quantum yields (QY) were quantified for synthesized materials, contributing to the assessment of their fluorescence efficiency. The synthesized CNDs were successfully applied for bioimaging of yeast cells, employing fluorescence microscopy to visualize their interaction. Remarkably, L-arginine-doped CNDs exhibited enhanced fluorescence, showcasing the influence of the dopant. The nature of these CNDs was rigorously investigated, confirming their biocompatibility. Notably, this work presents a novel approach to synthesizing CNDs from a renewable and sustainable source, cinnamon bark wood powder, while exploring the effects of L-arginine doping on their optical and biological properties. This work not only contributes to the synthesis and characterization of CNDs but also highlights their potential for diverse applications, emphasizing their structural, optical, and biological attributes. The findings underscore the versatility of CNDs derived from cinnamon bark wood powder and their potential for advancing biotechnological and imaging applications.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3577-3587"},"PeriodicalIF":2.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141310826","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

Correction: Excitation wavelength and time dependent colour tunable room temperature phosphorescence from boron doped carbon nanodots. 更正：掺硼碳纳米点的激发波长和时间相关性彩色可调室温磷光。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 DOI: 10.1007/s10895-024-04039-3

Bilipang Mahilary, Khemnath Patir, Sanjay Basumatary

引用次数: 0

Green Synthesis of CQDs via the Trunks of Bauhinia purpurea as Fluorescence Probes for Rapid and Accurate Detection of Quinoline Yellow. 通过紫荆树干绿色合成 CQDs 作为荧光探针，用于快速准确地检测喹啉黄。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-05-02 DOI: 10.1007/s10895-024-03699-5

Ziyang Ge, Haiying Du, Bo Tang, Jie Deng

{"title":"Green Synthesis of CQDs via the Trunks of Bauhinia purpurea as Fluorescence Probes for Rapid and Accurate Detection of Quinoline Yellow.","authors":"Ziyang Ge, Haiying Du, Bo Tang, Jie Deng","doi":"10.1007/s10895-024-03699-5","DOIUrl":"10.1007/s10895-024-03699-5","url":null,"abstract":"Carbon quantum dots (CQDs) were greenly synthesized via a single-step hydrothermal method, using the trunks of Bauhinia purpurea as the carbon source. They exhibited good dispersibility, water solubility, high sensitivity, and great stability with a spherical form and a particle size of 2.68 ± 0.32 nm. By utilizing the inner filter effect and dynamic quenching effect, the fluorescence quenching of CQDs can be induced to detect quinoline yellow. Detailed experimental results showed that the change rate of fluorescence intensity of CQDs had a good linear relationship with varying concentrations of quinoline yellow (2-128 µmol/L). It can be clearly observed that the fluorescence quenching occurred within 1 min, its correlation coefficient (R2) is 0.9912, and the detection limit (DL) is 1.7884 μmol/L, substantially lower than the maximum concentration stipulated by the national standard of 209.5 µmol/L. Furthermore, quinoline yellow had been successfully detected in real beverage samples using CQDs, with the recovery rates of 90.6%-110.4% and the relative standard deviation (RSD) ≤ 6.3% and it also showed great anti-interference and selectivity. These findings indicate that the detected quinoline yellow of CQDs possess substantial promise for a wide range of applications within the detected artificial food colors field.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3019-3032"},"PeriodicalIF":2.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140859922","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

An Imidazo[1, 2-a]Pyridine Based Fluorescent Probe for the Continuous "on-off-on" Detection of Fe³⁺ and F^. 一种基于咪唑并[1, 2-a]吡啶的荧光探针，用于 "开-关-开 "连续检测 Fe3+ 和 F。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-05-16 DOI: 10.1007/s10895-024-03763-0

Lei Xue, Yelin Yao, Xin Wang, Jichen Yin, Haibin Wang

引用次数: 0

Aggregation-Induced Emission (AIE) in Polymers: Effect of Polymer size on the Fluorescence of Low Molecular Weight PEG and PPG. 聚合物中的聚集诱导发射（AIE）：聚合物尺寸对低分子量 PEG 和 PPG 荧光的影响。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-05-23 DOI: 10.1007/s10895-024-03776-9

Nathalia Vieira Porphirio Veríssimo, Elionio Galvão Frota, Juliana Barone Teixeira, Valéria de Carvalho Santos-Ebinuma, Ricardo Pinheiro de Souza Oliveira

{"title":"Aggregation-Induced Emission (AIE) in Polymers: Effect of Polymer size on the Fluorescence of Low Molecular Weight PEG and PPG.","authors":"Nathalia Vieira Porphirio Veríssimo, Elionio Galvão Frota, Juliana Barone Teixeira, Valéria de Carvalho Santos-Ebinuma, Ricardo Pinheiro de Souza Oliveira","doi":"10.1007/s10895-024-03776-9","DOIUrl":"10.1007/s10895-024-03776-9","url":null,"abstract":"Aggregation-induced emission (AIE) is a fascinating phenomenon where specific molecules exhibit enhanced fluorescence upon aggregation. This unique property has revolutionized the design and development of new fluorescent materials for different applications, from biosensors and organic light-emitting diodes (OLEDs) to biomedical imaging and diagnostics. Researchers are creating sensitive and selective sensing platforms, opening new avenues in material science and engineering by harnessing the potential of AIE. To expand the knowledge in this field, this study explored the aggregation-induced emission (AIE) properties of two polymers, namely polyethylene glycol (PEG) and polypropylene glycol (PPG) of low molecular weight (MW) using fluorescence spectroscopy and absorbance (UV). PEG-300 and PPG-725 were the most fluorescent polymers at UV of the ten investigated. Interestingly, AIE did not correlate linearly with molecular weight (MW), and monobutyl ether substitution in PEG with a similar MW substantially altered its AIE. Furthermore, fluorescence precisely quantified low polymer concentrations in water, and non-aqueous solvents suppressed AIE, suggesting potential for AIE manipulation. These findings enhance our understanding of AIE in polymers, fostering the development of novel materials for applications such as biosensors.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3385-3392"},"PeriodicalIF":2.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141081699","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