Journal of Fluorescence最新文献_第9页

Investigating the Use of Coumarin Derivatives as Lasers. 香豆素衍生物用作激光的研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-10-14 DOI: 10.1007/s10895-023-03459-x

Sobia Noreen, Asim Mansha, Sadia Asim

{"title":"Investigating the Use of Coumarin Derivatives as Lasers.","authors":"Sobia Noreen, Asim Mansha, Sadia Asim","doi":"10.1007/s10895-023-03459-x","DOIUrl":"10.1007/s10895-023-03459-x","url":null,"abstract":"A benzene ring and a lactone ring combine to form the chemical coumarin. Dye lasers have made significant advances in laser technology. The coumarin molecule itself is a non-fluorescent but it displays high fluorescence when electron-denoting substituents such as sulfonamide, benzopyrone, amine, benzothiazole, hydroxyl, methoxy are substituted at various positions. Substituted coumarin possesses the highest energy properties, photostability, and alteration in electron mobility, and therefore could be effectively used as dye lasers. These are considered some of the best fluorophores due to their outstanding photophysical and photochemical properties, which include high fluorescence quantum yields, great photostability, good functionality, and a wide spectrum range. Various inorganic materials are used in classic laser technology to generate the necessary emission. Inorganic lasers come in various types and can emit light in the electromagnetic spectrum's ultraviolet, visible, or infrared parts. Inorganic lasers have certain limitations, which is why coumarin lasers are becoming increasingly popular due to their many advantages. Compared to inorganic lasers, dye lasers offer far better tunability and cover the entire visible and near-infrared range. They only emit at very few specific wavelengths and in extremely narrow bands. The property is therefore presented in this review.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2437-2449"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41202953","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

Sensitive Detections of Sodium Dichloroisocyanurate and Rosmarinic Acid by Polyvinylpyrrolidone Coated Copper Nanoclusters. 聚乙烯吡咯烷酮包覆铜纳米簇对二氯异氰尿酸钠和迷迭香酸的灵敏检测。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-10-26 DOI: 10.1007/s10895-023-03454-2

Jianhua Kuang, Qingqing Hu, Yao Feng, Jingxue Yuan, Zhengjun Cheng

引用次数: 0

Biodistribution of Intravenously Transplanted Mitochondria Conjugated with Graphene Quantum Dots in Diabetic Rats. 静脉移植的石墨烯量子点结合线粒体在糖尿病大鼠中的生物分布。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-10-28 DOI: 10.1007/s10895-023-03480-0

Pallavi Mudgal, Jyotsna Pareek, Swati Paliwal

引用次数: 0

Hydrazide Schiff base Compound Containing Triphenylphosphonium Units for Fluorescence Sensing of Al³⁺ and its real Sample Applications. 用于Al3+荧光传感的含三苯基鏻单元的酰肼-席夫碱化合物及其实际样品应用。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-11-04 DOI: 10.1007/s10895-023-03476-w

Ozge Gungor, Muhammet Köse

{"title":"Hydrazide Schiff base Compound Containing Triphenylphosphonium Units for Fluorescence Sensing of Al3+ and its real Sample Applications.","authors":"Ozge Gungor, Muhammet Köse","doi":"10.1007/s10895-023-03476-w","DOIUrl":"10.1007/s10895-023-03476-w","url":null,"abstract":"Al3+ excess in the body can cause many diseases. The development of chemosensors for the detection of Al3+ is therefore highly desirable. A hydrazide Schiff base compound containing triphenylphosphonium units (ER) was prepared and used as fluorescence turn-on sensor for the sensing of Al3+. Detection of Al3+ among various metals has been achieved successfully through the formation of Al3+-ligand coordination complexes. To detect Al3+, the \"turn on\" property of the fluorogenic chemosensor was investigated. Fluorescence sensing studies were carried out in CH3OH-Water (v/v, 9/1, pH 7.0) at λem = 528 nm. The LOD for sensing of Al3+ was found to be 0.129 µM. Using Job's graph, the stoichiometric ratio of ER- Al3+ was determined to be 1:1. The binding constant was determined to be 1.7 × 107 M-1 between Al3 + and the chemosensor ER. Finally, the determination of Al3+ in real herbal teas was carried out by using the sensing function of the chemosensor ER.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2817-2824"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71482311","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

Deep or Shallow? A Comparative Analysis on the Oil Species Identification Based on Excitation-Emission Matrix and Multiple Machine Learning Algorithms. 深还是浅?基于激励-发射矩阵和多机器学习算法的油种识别比较分析。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-11-14 DOI: 10.1007/s10895-023-03511-w

Ming Xie, Qintuan Xu, Ying Li

{"title":"Deep or Shallow? A Comparative Analysis on the Oil Species Identification Based on Excitation-Emission Matrix and Multiple Machine Learning Algorithms.","authors":"Ming Xie, Qintuan Xu, Ying Li","doi":"10.1007/s10895-023-03511-w","DOIUrl":"10.1007/s10895-023-03511-w","url":null,"abstract":"With the continuous expansion of petroleum extraction, transportation, and storage, the risk of oil spills at sea has also increased, posing a serious threat to marine safety. The excitation-emission matrix (EEM), which is composed of the fluorometric spectra under multiple excitation wavelengths, becomes a feasible approach to identify oil species. Despite the fact that various machine learning models have been applied to analyse EEMs of oil pollutants, it is unclear how much improvements the deep learning models have achieved, especially comparing with the shallow learning models. This paper presents a comparative analysis on the oil species identification using four types of machine learning models: random forest (RF), support vector machine (SVM), back propagation neural network (BPNN), and deep convolutional neural network (DCNN). The fluorescence of some common oils was excited using a tuneable xenon lamp and collected with a high-resolution spectrometer to form the EEMs for model training and testing.The results show that SVM, BPNN, and DCNN achieved high identification accuracies that are more than 93% on all types of oils tested in the study. The two deep learning models didn't have significant improvement over the SVM model. Considering the fact that the deep learning models require much larger number of calculations and longer running time, the SVM tends to be more suitable for oil species identification when considering the balance between the model accuracy and efficiency. This study provides some guidance on the choices of oil species identification model in the cases of oil spills.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2907-2915"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92154732","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

Multi-Spectroscopic and TD-DFT Studies on Chromogenic and Fluorogenic Detection of Cyanide in an Aqueous Solution. 水溶液中氰化物显色和荧光检测的多光谱和TD-DFT研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-10-27 DOI: 10.1007/s10895-023-03473-z

A Kalavathi, K Satheeshkumar, V Dharaniprabha, K N Vennila, Kuppanagounder P Elango

{"title":"Multi-Spectroscopic and TD-DFT Studies on Chromogenic and Fluorogenic Detection of Cyanide in an Aqueous Solution.","authors":"A Kalavathi, K Satheeshkumar, V Dharaniprabha, K N Vennila, Kuppanagounder P Elango","doi":"10.1007/s10895-023-03473-z","DOIUrl":"10.1007/s10895-023-03473-z","url":null,"abstract":"Different spectroscopic techniques and Density Functional Theory (DFT)/Time-Dependent Density Functional Theory (TDDFT) calculations have been employed to investigate the dual channel CN- detection behaviour of the developed chemo-dosimeter (AK3). The CN- with AK3 reaction triggered a colour change from pale yellow to colourless and enhanced fluorescence. UV-Vis, fluorescence, 1H & 13C NMR and mass techniques coupled with theoretical calculations (Mulliken charges, dihedral angles) revealed that the CN- sensing process mechanism involves deprotonation of the N-H group followed by nucleophilic addition reaction. Detailed TD-DFT calculations showed that the relaxation of excited electrons from LUMO and to two different ground states is responsible for the weak/moderate fluorescence of AK3. Nucleophilic addition of CN- to the C-atom of the CH = CH bridge terminated the π-conjugation between donor and acceptor regions, reduced the coplanarity, decreased the ICT transition and consequently enhanced the fluorescence of the probe. The practical utility of the probe was demonstrated by detecting cyanide in food materials and determining CN- in environmental water samples.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2691-2705"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54229364","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

Biocompatible, Europium-Doped Fluorapatite Nanoparticles as a Wide-Range pH Sensor. 生物相容性，铕掺杂的氟磷灰石纳米粒子作为宽范围pH传感器。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-10-13 DOI: 10.1007/s10895-023-03461-3

T K Krishnapriya, Ayswaria Deepti, P S Baby Chakrapani, A S Asha, M K Jayaraj

{"title":"Biocompatible, Europium-Doped Fluorapatite Nanoparticles as a Wide-Range pH Sensor.","authors":"T K Krishnapriya, Ayswaria Deepti, P S Baby Chakrapani, A S Asha, M K Jayaraj","doi":"10.1007/s10895-023-03461-3","DOIUrl":"10.1007/s10895-023-03461-3","url":null,"abstract":"The development of a simple, biocompatible, pH sensor with a wide range of detection, using a single fluorescent probe is highly important in the medical field for the early detection of diseases related to the pH change of tissues and body fluids. For this purpose, europium-doped fluorapatite (FAP: Eu) nanoparticles were synthesized using the coprecipitation method. Doping with the rare earth element europium (Eu) makes the non-luminescent phosphate mineral fluorapatite, luminescent. The luminous response of the sample upon dissolution in hydrochloric acid (HCl), in highly acidic to weakly basic media, makes it a potential pH sensor. A linear variation was observed with an increase in pH, in both the total intensity of emission and the R-value or the asymmetry ratio. The ratiometric pH sensing enabled by the variation in R-value makes the sensor independent of external factors. The structural, optical, and photoluminescent (PL) lifetime analysis suggests a particle size-dependent pH sensing mechanism with the changes in the coordinated water molecules around the Eu3+ ion in the nanoparticle. Given its exceptional biocompatibility and pH-dependent fluorescence intensity for a wide range of pH from 0.83 to 8.97, the probe can be used as a potential candidate for pH sensing of biological fluid.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2543-2555"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41202950","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

Pyrene-acylhydrazone-based Turn-on Fluorescent Probe for Highly Sensitive Detection Cu²⁺ and Application in Bioimaging. 基于芘酰腙的高灵敏度Cu2+开启荧光探针及其在生物成像中的应用。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-10-18 DOI: 10.1007/s10895-023-03465-z

Lu Liu, Hanshu Zhang, Yun Gao, He Zhu, Hanyan Yang, Ruilin Zhang, Yu Yang, Hongfei Gao

{"title":"Pyrene-acylhydrazone-based Turn-on Fluorescent Probe for Highly Sensitive Detection Cu2+ and Application in Bioimaging.","authors":"Lu Liu, Hanshu Zhang, Yun Gao, He Zhu, Hanyan Yang, Ruilin Zhang, Yu Yang, Hongfei Gao","doi":"10.1007/s10895-023-03465-z","DOIUrl":"10.1007/s10895-023-03465-z","url":null,"abstract":"The development of highly selective and sensitive, low detection limits, and biocompatible turn-on copper ion fluorescent probes is of great significance for the environment and life sciences. In this study, a novel turn-on fluorescent probe T based on pyrene-acylhydrazone was synthesized via an efficient one-step condensation reaction and characterized by 1H NMR, 13C NMR and HRMS. The probe T exhibited high selectivity with a low detection limit of 0.304 nM towards Cu2+ in DMSO/H2O (v/v = 1 : 1) medium by a PET-TICT dual interplaying sensing mechanisms. Job's plot analysis and HRMS data confirmed the 1 : 1 binding stoichiometry between T and Cu2+ with an association constant of 5.7×103 M-1. Additionally, the binding model was investigated by 1H NMR titration and FT-IR spectra. Furthermore, probe T exhibits low cellular toxicity and excellent membrane permeability, and has been successfully applied for fluorescent imaging of copper ions in live HT-22 cells.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2593-2600"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41235875","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

Spectrofluorimetric Protocol for Estimation of Commonly Used Antispasmodic Drotaverine. Fluorescence Quenching Study. 荧光光谱法测定常用抗痉挛药物屈他韦林。荧光猝灭研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-11-06 DOI: 10.1007/s10895-023-03487-7

Sayed M Derayea, Nihad A Mahmoud, Deena A M Noureldeen, Tamer Z Attia

{"title":"Spectrofluorimetric Protocol for Estimation of Commonly Used Antispasmodic Drotaverine. Fluorescence Quenching Study.","authors":"Sayed M Derayea, Nihad A Mahmoud, Deena A M Noureldeen, Tamer Z Attia","doi":"10.1007/s10895-023-03487-7","DOIUrl":"10.1007/s10895-023-03487-7","url":null,"abstract":"A fast, simple, accurate, precise, and cheap fluorimetric protocol has been proposed for analysis of a phosphodiesterase-IV inhibitor, namely drotaverine hydrochloride. Fluorimetric protocol is based on estimating the decrease in the eosin Y fluorescence intensity by quantitative addition of drotaverine at pH 3.1 (acetate buffer). An ion pair complex is formed, which leads to quenching in the fluorescence intensity of the dye without need of prior extraction at 534 nm (λex. 339 nm). Different reaction perimeters which influence the production of complex (ion pair between drotaverine and eosin) were deeply investigated and optimized. The developed fluorimetric protocol is capable for quantitative estimation of drotaverine in linear range of 0.4 to 2.5 µg mL-1. After method validation in respect to ICH guidelines, it was applied to determine drotaverine in its commercial preparation. By comparing with other reported method, the developed and validated fluorimetric protocol is capable for estimation of drotaverine in commercial preparation with good accuracy and excellent precision.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2837-2844"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11604728/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71482312","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

Aggregation-Induced Emission Active Benzidine-Pyridoxal Derived Scaffold for Detecting Fe³⁺ and pH. 聚合诱导发射活性联苯胺-吡哆醛衍生的检测Fe3+和pH的支架。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-11-01 Epub Date: 2023-11-14 DOI: 10.1007/s10895-023-03503-w

Kanishk Bhardwaj, Thangaraj Anand, Ritambhra Jangir, Suban K Sahoo

{"title":"Aggregation-Induced Emission Active Benzidine-Pyridoxal Derived Scaffold for Detecting Fe3+ and pH.","authors":"Kanishk Bhardwaj, Thangaraj Anand, Ritambhra Jangir, Suban K Sahoo","doi":"10.1007/s10895-023-03503-w","DOIUrl":"10.1007/s10895-023-03503-w","url":null,"abstract":"Present work introduces an aggregation-induced emission (AIE) active Schiff base 4,4'-((1E,1'E)-([1,1'-biphenyl]-4,4'-diylbis(azaneylylidene))bis(methaneylylidene))bis(5-(hydroxymethyl)-2-methylpyridin-3-ol) (BNPY). Schiff base BNPY was synthesized by reacting benzidine with pyridoxal. The non-fluorescent BNPY in freely soluble DMSO medium showed a significant fluorescence enhancement at 563 nm (λex = 400 nm) upon increasing the water fraction (fw) in DMSO above 60% due to the restriction of intramolecular rotation upon the aggregation of BNPY. The AIE active BNPY was employed for the detection of metal ions in DMSO:H2O (fw = 70%). Upon the addition of Fe3+, the fluorescence emission of BNPY at 563 nm was quenched due to the chelation-enhanced fluorescence quenching (CHEQ). The Job's plot experiment supported the formation of a complex between BNPY and Fe3+ in 1:2 binding ratio. With an estimated detection limit of 5.6 × 10-7 M, BNPY was employed to detect and quantify Fe3+ ion in real water samples with satisfactory recovery percentages. Moreover, the pH studies of BNPY aggregates revealed three different fluorescence windows: non-fluorescent in acidic pH 2.02 to 3.16, yellow fluorescent between pH 3.60 to 9.33, and green fluorescent in basic pH 9.96 to 12.86.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":"2917-2926"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92154731","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