Journal of Fluorescence最新文献_第7页

Spectral Characteristics of Water-Soluble Rhodamine Derivatives for Laser-Induced Fluorescence. 用于激光诱导荧光的水溶性罗丹明衍生物的光谱特性。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-02 DOI: 10.1007/s10895-024-03819-1

Abhishek Ratanpara, Myeongsub Kim, Yeo Jun Kim, Carlos H Hidrovo

{"title":"Spectral Characteristics of Water-Soluble Rhodamine Derivatives for Laser-Induced Fluorescence.","authors":"Abhishek Ratanpara, Myeongsub Kim, Yeo Jun Kim, Carlos H Hidrovo","doi":"10.1007/s10895-024-03819-1","DOIUrl":"10.1007/s10895-024-03819-1","url":null,"abstract":"We present a comprehensive fluorescence characterization of seven water-soluble rhodamine derivatives for applications in laser-induced fluorescence (LIF) techniques. Absorption and emission spectra for these dyes are presented over the visible spectrum of wavelengths (400 to 700 nm). Their fluorescence properties were also investigated as a function of temperature for LIF thermometry applications. Rhodamine 110 depicted the least fluorescence emission sensitivity to temperature at -0.11%/°C, while rhodamine B depicted the most with a -1.55%/°C. We found that the absorption spectra of these molecules are independent of temperature, supporting the notion that the temperature sensitivity of their emission only comes from changes in quantum yield with temperature. Conversely, these rhodamine fluorophores showed no change in emission intensities with pH variations and are, therefore, not suitable tracers for pH measurements. Similarly, fluorescent lifetime, which is also a property sensitive to local environmental changes in temperature, pH, and ion concentration, measurements were conducted for these fluorophores. It was found that rhodamine B and kiton red 620 have shorter fluorescence timescales compared to those of the other five rhodamine dyes, making them least suitable for applications where temporal changes in emission are monitored. Lastly, we conducted experiments to assess the physicochemical absorption characteristics of these dyes' molecules into polydimethylsiloxane (PDMS), the most common material for microfluidic devices. Rhodamine B showed the highest diffusion into PDMS substrates as compared to the other derivative dyes.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4143-4155"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141492268","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 Review on Small Molecule Based Fluorescence Chemosensors for Bioimaging Applications. 基于小分子的荧光化学传感器在生物成像中的应用综述。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-11 DOI: 10.1007/s10895-024-03826-2

Duraisamy Udhayakumari, Subramaniyan Ramasundaram, Peter Jerome, Tae Hwan Oh

引用次数: 0

Nitrogen-Doped Carbon Dots Enhanced Hydrogen Carbonate-Hydrogen Peroxide Chemiluminescent Reaction and its Application in Ascorbic Acid Sensing. 掺氮碳点增强碳酸氢盐-过氧化氢化学发光反应及其在抗坏血酸传感中的应用。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-31 DOI: 10.1007/s10895-024-03868-6

Shuji Li, Ke Su, Xing Liu, Xiuming Jiang, Guoqiang Xiang, Lijun He

{"title":"Nitrogen-Doped Carbon Dots Enhanced Hydrogen Carbonate-Hydrogen Peroxide Chemiluminescent Reaction and its Application in Ascorbic Acid Sensing.","authors":"Shuji Li, Ke Su, Xing Liu, Xiuming Jiang, Guoqiang Xiang, Lijun He","doi":"10.1007/s10895-024-03868-6","DOIUrl":"10.1007/s10895-024-03868-6","url":null,"abstract":"Nitrogen-doped carbon dots (N-CDs) were prepared by self-exothermic procedure using grasshopper powder as a single precursor. The prepared N-CDs not only have excellent fluorescence properties, but also can catalyze and enhance the ultra-weak chemiluminescence of NaHCO3-H2O2. The reaction conditions of NaHCO3-H2O2-N-CDs CL were optimized. Under the optimal experimental conditions, when AA was added to the NaHCO3-H2O2-N-CDs CL system, AA had a significant inhibitory effect on the CL intensity of NaHCO3-H2O2-N-CDs. There was a good linear relationship between the calculated lg(I0/I) and the concentration of AA (C), and the calibration curve equation was lg(I0/I) = 0.03667 C-0.00708 (µM). The established CL analysis method has a detection limit of 0.12 µM for AA and a linear range of 0-50 µM. The selectivity of CL method was evaluated, and the method was successfully applied to the determination of AA in vegetable and fruit samples. The spiked recoveries were between 88.9% and 118.9%, which indicated that the method was simple, rapid, and sensitive, and had great potential in the determination of AA in foods.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4689-4698"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141855656","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 Versatile pH-Dependent Fluorometric, Colorimetric, and Electrochemical Sensor for H₂S Monitoring in Water. 用于监测水中 H2S 的多功能 pH 值荧光、比色和电化学传感器。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-08-13 DOI: 10.1007/s10895-024-03902-7

Rashmi M Kulkarni, M Ranjana, Namratha Ullal, Dhanya Sunil

引用次数: 0

A Novel AIE-Active Salicylaldehyde-Schiff Base Probe with Carbazole Group for Al³⁺ Detection in Aqueous Solution. 一种带有咔唑基团的新型 AIE 活性水杨醛-Schiff 碱探针，用于检测水溶液中的 Al3+。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-08-12 DOI: 10.1007/s10895-024-03859-7

Chenyan Lv, Bowen Hu, Yong Tao

{"title":"A Novel AIE-Active Salicylaldehyde-Schiff Base Probe with Carbazole Group for Al3+ Detection in Aqueous Solution.","authors":"Chenyan Lv, Bowen Hu, Yong Tao","doi":"10.1007/s10895-024-03859-7","DOIUrl":"10.1007/s10895-024-03859-7","url":null,"abstract":"A donor-acceptor Schiff-base fluorescent probe BKS with chelation enhanced fluorescence (CHEF) mechanism was designed and synthesized via benzophenone(Acceptor), salicylaldehyde and carbazole(Donor) for Al3+ detection, which exhibited typical aggregation-induced emission (AIE) characteristic. BKS probe could provide outstanding selectivity to Al3+ with a prominent fluorescence \"turn-on\" at 545 nm in a wide pH range from 2 to 11. By the Job's plot, the binding stoichiometry ratio of probe BKS to Al3+ was determined 1:1. The proposed strategy offered a very low limit of detection at 1.486 µM in THF/H2O(V/V = 1:4, HEPBS = 10 mM, pH = 7.40), which was significantly lower than the standard of WHO (Huang et al., Microchem J 151:104195, 2019)-(Yongjie Ding et al., Spectrochim Acta Mol Biomol Spectrosc 167:59-65, 2021) guidelines for drinking water. BKS probe could provide a wider linear detection range of 50 to 500 µM. Furthermore, the probe could hardly be interfered by other examined metal ions. The analysis of Al3+ in real water samples with appropriate recovery (100.72 to 102.85) with a relative standard deviation less than 2.82% indicated the accuracy and precision of BKS probe and the great potential in the environmental monitoring of Al3+.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4819-4828"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916872","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

Highly Fluorescent π-Conjugated Azomethines and Divalent Metal Complexes as Antibacterial and Antibiofilm Nominees. 作为抗菌和抗生物膜提名物质的高荧光π-共轭偶氮甲烷和二价金属配合物。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-30 DOI: 10.1007/s10895-024-03855-x

Şeyma Nur Ural Baydeniz, Halil İsmet Uçan, Fatih Sevgi, İhsan Obalı, Aslıhan Yılmaz Obalı

{"title":"Highly Fluorescent π-Conjugated Azomethines and Divalent Metal Complexes as Antibacterial and Antibiofilm Nominees.","authors":"Şeyma Nur Ural Baydeniz, Halil İsmet Uçan, Fatih Sevgi, İhsan Obalı, Aslıhan Yılmaz Obalı","doi":"10.1007/s10895-024-03855-x","DOIUrl":"10.1007/s10895-024-03855-x","url":null,"abstract":"π-Conjugated azomethine ligands differing in the naphthalene or phenylmethane-centered core structure and their divalent cobalt, nickel, copper, and zinc metal complexes were prepared and well-characterized by spectral analyses in solid state. Magnetic natures of the complexes were determined by magnetic susceptibility measurements in solid-state. Their remarkable photophysical characteristics were recorded by Uv-vis and Fluorescence spectroscopic techniques. At their excitation wavelenght of 265 nm, all molecules exhibited triple fluorescence emission bands with promising intensities above 673 nm in near infra-red region. Antibacterial and antibiofilm activities of the π-conjugated azomethines are promising for potential applications in medical and healthcare settings. Hence, the antibacterial/antibiofilm activity of the π-conjugated azomethine ligands and their metal complexes against some clinically important bacteria namely Staphylococcus aureus (MSSA), Methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus epidermidis, Escherichia coli, Pseudomonas aeruginosa and Proteus mirabilis was investigated, and the obtained results have shown that the ligands and complexes had a remarkable antibacterial effect, especially on Proteus mirabilis. Metal complexes have been found to have a significant inhibitory effect on biofilm formation by MRSA, MSSA, and P. mirabilis compared to ligands. The copper (II) complex of ligand-2 showed the highest inhibition percentage, significantly reducing biofilm formation for MRSA and MSSA. Furthermore, cobalt (II) complexes of the ligands selectively inhibited the growth of the opportunistic pathogen P. mirabilis biofilms, indicating that metal complexes might be a good choice for future antibiofilm studies.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4673-4688"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12206175/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141792633","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

Correction: Development of Eco-Friendly Scattering and Fluorimetric Methods for the Determination of Clemastine Through Its Interaction with Eosin Y: Assessment of Whiteness, Blueness, and Greenness Tools. 修正：通过与伊红Y相互作用来测定Clemastine的环保散射和荧光法的发展：白度、蓝度和绿度工具的评估。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 DOI: 10.1007/s10895-025-04174-5

Mohamed A Abdel-Lateef, Ibrahim A Darwish, Hassanien Gomaa, Noha S Katamesh

引用次数: 0

Chitosan-Derived Nanocarrier Polymers for Drug Delivery and pH-Controlled Release in Type 2 Diabetes Treatment. 壳聚糖纳米载体聚合物在 2 型糖尿病治疗中的给药和 pH 值控制释放作用

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-06-18 DOI: 10.1007/s10895-024-03810-w

Shanshan Guo, Hua Li

{"title":"Chitosan-Derived Nanocarrier Polymers for Drug Delivery and pH-Controlled Release in Type 2 Diabetes Treatment.","authors":"Shanshan Guo, Hua Li","doi":"10.1007/s10895-024-03810-w","DOIUrl":"10.1007/s10895-024-03810-w","url":null,"abstract":"Diabetes, particularly Type 2 Diabetes Mellitus (T2DM), is a chronic metabolic disorder with high and increasing global prevalence, characterized by insulin resistance and inadequate insulin secretion. Despite advancements in novel drug delivery systems, widespread and systematic treatment of advanced glycation end products (AGEs) remains challenging due to issues like drug toxicity, low water solubility, and uncontrolled release. Thus, developing nanoplatforms with controlled release capabilities has become a major research focus. Due to its excellent biocompatibility and drug delivery properties, chitosan has attracted considerable attention as a typical biopolymer. In this study, we designed and synthesized an intelligent fluorescence-pH sensitive nanopolymer material using chitosan. We loaded drug 1 and chromium phthalocyanine (CrPc) into folic acid-conjugated carboxymethyl chitosan (FA-CMCS) nanocarriers, forming FA-CMCS@1-CrPc. Comprehensive characterization of FA-CMCS@1-CrPc was conducted using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), and gas adsorption analysis (BET). The results indicate that the nanomaterial was successfully synthesized and exhibits excellent specific surface area, biocompatibility, and fluorescence response. Further research revealed that FA-CMCS@1-CrPc not only achieved controlled drug release but also could regulate drug release by adjusting pH. Additionally, due to its strong fluorescence performance, the nanomaterial demonstrated higher detection sensitivity, especially for monitoring the release of 5% trace drugs. An in vitro model of insulin-resistant cells was established to evaluate the effects of the drug delivery system on glucose degradation and AGE-RAGE regulation, providing a foundation for the development of new T2DM drugs.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"3895-3904"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141419454","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

Exploring the molecular binding mechanism of 6-fluoro, 4-hydroxy, 2- methyl quinoline with TiO₂ nanoparticles: A spectroscopic, thermodynamic, and insights into the solvatochromic effect. 探索 6-氟、4-羟基、2-甲基喹啉与 TiO2 纳米粒子的分子结合机制：光谱学、热力学和对溶色效应的见解。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-03 DOI: 10.1007/s10895-024-03829-z

Deepa H Krishne, Kalpana Sharma, A Jagannatha Reddy, V V Koppal

{"title":"Exploring the molecular binding mechanism of 6-fluoro, 4-hydroxy, 2- methyl quinoline with TiO2 nanoparticles: A spectroscopic, thermodynamic, and insights into the solvatochromic effect.","authors":"Deepa H Krishne, Kalpana Sharma, A Jagannatha Reddy, V V Koppal","doi":"10.1007/s10895-024-03829-z","DOIUrl":"10.1007/s10895-024-03829-z","url":null,"abstract":"This study investigates the interaction between titanium oxide nanoparticles (TiO2 NPs) and the heterocyclic fluorophore 6-fluoro,4-hydroxy,2-methylquinoline (6-FHMQ), aiming to understand fluorescence quenching mechanisms and thermodynamic characteristics. Spectroscopic techniques including spectrofluorometry (FL) and spectrophotometry (UV-Vis) were used, with a lifetime decay (τ) of 0.18 ns for 6-FHMQ measured using time correlated single photon counting (TCSPC). The interaction between 6-FHMQ and TiO2 NPs revealed a mix of static and dynamic fluorescence quenching mechanisms, with increasing quenching constants (Ksv) and a higher bimolecular quenching rate constant (Kq). The dynamic nature was highlighted by a temperature-dependent increase in binding sites from 1 to ~ 2. Spontaneous complexation was affirmed by negative change in free energy (ΔG), with negative change in enthalpy (ΔH) and a positive change in entropy (ΔS) values indicating favorable electrostatic and ionic interactions. The impact of varying TiO2 NP concentrations on 6-FHMQ absorption was analyzed using the Benesi-Hildbrand equation, with a quantum yield of 0.61 determined. By forster resonance energy transfer (FRET) theory, the proximity between 6-FHMQ and TiO2 NPs was found to be less than 70 Å. Ground and excited state dipole moments of 6-FHMQ in different solvents were calculated to demonstrate solvent sensing ability and charge transfer properties. Ultimately, this study serves as a testament to the power of scientific innovation in the realms of drug delivery and tissue engineering.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4197-4211"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141492241","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

Highly Efficient Far-Red Emitting Mg₂₁Ca₄Na₄(PO₄)₁₈: Ce³⁺, Eu³⁺ Luminescent Glasses: A Novel Approach Towards Plant Cultivation Technologies. 高效远红外发光 Mg21Ca4Na4(PO4)18：Ce3+、Eu3+ 发光玻璃：实现植物栽培技术的新方法。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2025-06-01 Epub Date: 2024-07-01 DOI: 10.1007/s10895-024-03783-w

Abhijeet R Kadam, Toshi S Dhapodkar, N S Shirbhate, S J Dhoble

{"title":"Highly Efficient Far-Red Emitting Mg21Ca4Na4(PO4)18: Ce3+, Eu3+ Luminescent Glasses: A Novel Approach Towards Plant Cultivation Technologies.","authors":"Abhijeet R Kadam, Toshi S Dhapodkar, N S Shirbhate, S J Dhoble","doi":"10.1007/s10895-024-03783-w","DOIUrl":"10.1007/s10895-024-03783-w","url":null,"abstract":"One of the exciting developments in contemporary luminescence research is the development of rare earth triggered luminescent glasses, which are a type of lanthanide activated luminous material. For the first time, Ce3+, Eu3+ activated/co-activated Mg21Ca4Na4(PO4)18 orthophosphate glasses have been synthesized using the proposed work's melt quenching technique. The proposed glass sample's XRD pattern has an amorphous character, although its most prominent peak matches data from the Mg21Ca4Na4(PO4)18 standard ICSD database. FT-IR analysis was used to analyze the proposed glass sample's vibrational characteristics. Co-activated Mg21Ca4Na4(PO4)18 glass exhibits large emission peaks under UV excitations that cover the far red area during a photoluminescence examination. These outcomes demonstrate the proposed sample's value in applications such as WLEDs and plant cultivation.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"4027-4038"},"PeriodicalIF":2.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141468456","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