Journal of Fluorescence最新文献_第2页

Energy Transfer Studies on Red Emitting CaGdSbWO₈: Sm³⁺/Eu³⁺ Phosphor for w-LEDs and Indoor Plant Growth Lighting System. 用于 w-LED 和室内植物生长照明系统的红色发光 CaGdSbWO8：Sm3+/Eu3+ 磷光体的能量传递研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-18 DOI: 10.1007/s10895-024-04066-0

Jatin Parashar, Gaurank Yadav, Seema, Anu, Aman Prasad, A S Rao

{"title":"Energy Transfer Studies on Red Emitting CaGdSbWO8: Sm3+/Eu3+ Phosphor for w-LEDs and Indoor Plant Growth Lighting System.","authors":"Jatin Parashar, Gaurank Yadav, Seema, Anu, Aman Prasad, A S Rao","doi":"10.1007/s10895-024-04066-0","DOIUrl":"https://doi.org/10.1007/s10895-024-04066-0","url":null,"abstract":"In the present research work, a solid-state reaction method was employed to synthesize a series of CaGd(0.95-x)SbWO8:Sm0.05Eux (x = 1, 1.5, 2, 3 and 4 mol%) phosphors. The phase purity, crystallinity, morphological and compositional studies were analysed via X-ray diffraction (XRD), scanning electron microscopy (SEM) imaging, and energy dispersive spectroscopy (EDS) analysis. The Fourier transform infrared (FT-IR) spectroscopy was utilized to measure OH content in the prepared phosphor material. The diffused reflectance spectroscopy (DRS) analysis was applied to measure the optical energy band gap. The photoluminescence (PL) spectroscopy at excitation wavelengths 275 and 405 nm was carried out to analyze the luminescence properties of the prepared phosphors. The intensity of emission peaks of Sm3+ ions decreased as the concentration of Eu3+ ions increased showing the energy transfer mechanism from Sm3+ to Eu3+ ions. The dipole-dipole interaction mechanism is responsible for the energy transfer between Sm3+ to Eu3+ ions as assessed using the Reisfeld approximation. The CIE coordinates of the prepared samples lie in the warm red region represented by the relatively low (3200 K) value of correlated color temperature. These results show the suitability of the prepared phosphor for white light emitting diode (w-LEDs) and also in indoor plant growth lighting systems.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142846776","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

Enhancement of Sm³⁺ Luminescence in Sol-Gel Silica Matrix: Effect of Ligands Phenyl Phosphinic Acid and Trioctylphosphine Oxide. 溶胶凝胶二氧化硅基质中 Sm3+ 发光的增强：配体苯基膦酸和三辛基氧化膦的影响。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-17 DOI: 10.1007/s10895-024-04076-y

Navaneeta Rajkonwar, Purabi Gogoi, Pankaj Dutta

{"title":"Enhancement of Sm3+ Luminescence in Sol-Gel Silica Matrix: Effect of Ligands Phenyl Phosphinic Acid and Trioctylphosphine Oxide.","authors":"Navaneeta Rajkonwar, Purabi Gogoi, Pankaj Dutta","doi":"10.1007/s10895-024-04076-y","DOIUrl":"https://doi.org/10.1007/s10895-024-04076-y","url":null,"abstract":"Sol-gel silica matrices singly doped with Sm3+ and co-doped with ligands phenyl phosphinic acid (PPIA) and trioctylphosphine oxide (TOPO) were fabricated and studied for their structural and spectroscopic behaviour. Structural studies were done by x-ray diffraction (XRD) and Fourier transform infra-red (FTIR) absorption analysis whereas spectroscopic behaviour was studied by ultraviolet - visible (UV-Vis) absorption, photoluminescence (PL) excitation, emission and time-correlated decay analyses. XRD studies exhibit the amorphous nature of the samples and FTIR studies corroborate the presence of the ligands in the silica matrix. UV-Vis absorption and PL studies show significant enhancement in the radiative parameters in ligand co-doped samples compared to singly doped Sm3+ sample. Judd Ofelt parameters estimated from the absorption spectra possess higher values compared to popular hosts; revealing higher asymmetry and covalency around the active Sm3+ ions. An enhancement in PL intensity by 50.38 times and yield by 52.57 times with the co-doping of the ligands PPIA and TOPO is reported. These enhancement in the radiative output in ligand co-doped samples is attributed to the modification of the silica network with the incorporation of the ligands, energy transfer from ligands to nearby Sm3+ ions as well as due to the shielding of Sm3+ ions from the OH quenchers in the silica matrix. The improved PL behaviour especially corresponding to 4G5∕2→6H9∕2 transitions occurring at 643 nm suggests the potential of PPIA and TOPO co-doped Sm3+ silica matrix for diverge optical applications.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142837156","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

Metal-Enhanced Luminescence of Core-Shell Au@ Resorcinol-Formaldehyde Resin Nanospheres for Oxygen Sensing.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-16 DOI: 10.1007/s10895-024-04069-x

Wenwen Yin, Jiajie Sui, Guozhong Cao, Dana Dabiri

引用次数: 0

Detection of Tetracycline in Farm Wastewater by Nitrogen-doped Carbon Quantum Dots.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-16 DOI: 10.1007/s10895-024-04080-2

Peilan Yu, Lintong Ji, Teng Wang, Juan Hu, Lihao Jiang, Shancai Guo, Yongjian Pan, Jianyuan Lin

{"title":"Detection of Tetracycline in Farm Wastewater by Nitrogen-doped Carbon Quantum Dots.","authors":"Peilan Yu, Lintong Ji, Teng Wang, Juan Hu, Lihao Jiang, Shancai Guo, Yongjian Pan, Jianyuan Lin","doi":"10.1007/s10895-024-04080-2","DOIUrl":"https://doi.org/10.1007/s10895-024-04080-2","url":null,"abstract":"The detection of tetracycline antibiotics in environmental waters is crucial due to their widespread use, persistence, and potential toxicity. Herein, a method for the specific detection of tetracycline in aquaculture wastewater using a nitrogen-doped carbon quantum dots fluorescence probe is reported. Nitrogen-doped carbon quantum dots (N-CQDs) were synthesized in one step via a hydrothermal method, employing citric acid as the carbon source and diethylenetriamine as the nitrogen source. The resulting N-CQDs exhibit excellent stability, solubility and fluorescence properties. Upon the introduction of tetracycline, a fluorescence burst can be observed, indicating that the N-CQDs function as a ratio fluorescence probe. The fluorescence burst phenomenon is primarily due to the internal filtering effect. In the case of N-CQDs, this burst is attributed to the overlap between the absorption spectrum of tetracycline and the emission spectrum of the carbon quantum dots, which results in internal filtering. The linear range for tetracycline detection spans from 54.2 nM to 0.8 μM, with a detection limit of 54.2 nM. The developed fluorescence probe shows potential for application in detecting tetracycline in real water samples.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142828853","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

Treatment of Wastewater from Methylene Blue Dye and E. Coli Bacteria by High-Performance Fe₃O₄/rGO/TiO₂ Nanocatalyst.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-16 DOI: 10.1007/s10895-024-04067-z

Mahjube Sanjari, Mehdi Molaei, Akram Seifi, Parvaneh Iranmanesh, Farzad Farahmandzadeh

{"title":"Treatment of Wastewater from Methylene Blue Dye and E. Coli Bacteria by High-Performance Fe3O4/rGO/TiO2 Nanocatalyst.","authors":"Mahjube Sanjari, Mehdi Molaei, Akram Seifi, Parvaneh Iranmanesh, Farzad Farahmandzadeh","doi":"10.1007/s10895-024-04067-z","DOIUrl":"https://doi.org/10.1007/s10895-024-04067-z","url":null,"abstract":"Photocatalysis-based technology has insight into decreasing the disadvantages of traditional approaches and has been identified as an appropriate way to eliminate dyes and bacteria from wastewater. In this work, Fe3O4/rGO/TiO2 photocatalyst material was synthesized by a simple and fast hydrothermal method. The photocatalyst process results showed that Fe3O4/rGO/TiO2 nanocomposite degraded methylene blue dye completely in 4 min. Also, Fe3O4/rGO/TiO2 nanocomposite was very efficient (4.92 log reduction value) for E. Coli bacteria inactivation in 60 min photocatalyst process. The superparamagnetic behavior of Fe3O4/rGO/TiO2 nanocomposite was investigated by VSM analysis and magnetization saturation was obtained at about 38.46 emu/g which gives simple and fast separation from media to Fe3O4/rGO/TiO2 nanocatalyst. The structural and morphology properties of Fe3O4/rGO/TiO2 nanocomposite were studied by XRD, Raman, FT-IR, EDS, FESEM, and TEM analysis. The obtained results confirmed that Fe3O4/rGO/TiO2 nanocomposite is an efficient nanocatalyst for the treatment of MB dye and E. Coli. Bacteria from water, simultaneously.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142828867","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

Green Synthesis of Highly Fluorescent Carbon Dots from Groundnut Shell Biomass for Bioimaging Applications.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-16 DOI: 10.1007/s10895-024-04065-1

Sai Praneeth Thota, Aditya Kurdekar, Praveen V Vadlani, Belliraj Siva Kumar

{"title":"Green Synthesis of Highly Fluorescent Carbon Dots from Groundnut Shell Biomass for Bioimaging Applications.","authors":"Sai Praneeth Thota, Aditya Kurdekar, Praveen V Vadlani, Belliraj Siva Kumar","doi":"10.1007/s10895-024-04065-1","DOIUrl":"10.1007/s10895-024-04065-1","url":null,"abstract":"Carbon dots from alternative renewable carbon sources are emerging as alternatives to metal-based quantum dots. These nature-derived carbon dots exhibit excellent optical and fluorescent properties, which enable their use in several applications, including bioimaging. This work presents a facile and green approach to synthesizing highly fluorescent carbon dots from groundnut shells (GNS), an abundantly available agricultural residue. HRTEM analysis confirmed the synthesis of Groundnut shell Carbon Dots (GCDs) with a lattice spacing of around 0.22 nm, corresponding to low dimensional graphitic structures. The observed intense absorption at around 278 nm can be ascribed to the л - л* transitions resulting from the hybridization of sp2/sp3 orbitals in carbon dots. The fluorescence spectroscopy of GCDs displayed pronounced emission characteristics that varied depending on the excitation wavelength, which ranges from 280 to 480 nm. The quantum yield of these GCDs was estimated to be 17.1%. The biocompatibility of GCDs is confirmed by the cell viability test, which indicates their suitability for yeast cell imaging.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142828854","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: Synthesis, Invitro Cytotoxic Activity and Optical Analysis of Substituted Schiff Base Derivatives. 更正：被取代的希夫碱衍生物的合成、体外细胞毒性活性和光学分析。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-14 DOI: 10.1007/s10895-024-04089-7

Muhammad Saleem, Abrar Hussain, Muhammad Hanif, Hufsa Ahmad, Salah Uddin Khan, Sajjad Haider, Muhammad Rafiq, Rizwan Nasir Paracha, Sang Hyun Park

引用次数: 0

A Novel Ultrasensitive Second Derivative Synchronous Spectrofluorimetric Approach for the Simultaneous Analysis of the Co-Administered Antihypertensives, Telmisartan and Carvedilol in Biological Fluids and Tablets: Greenness and Blueness Assessment.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-14 DOI: 10.1007/s10895-024-04064-2

Aya Saad Radwan, Galal Magdy, Mahmoud El-Maghrabey, Fotouh R Mansour, Lateefa A Al-Khateeb, Wael A Mahdi, Sultan Alshehri, Bandar R Alsehli, Wejdan T Alsaggaf, Ali I Abd Alrheam, Mohamed A El Hamd

{"title":"A Novel Ultrasensitive Second Derivative Synchronous Spectrofluorimetric Approach for the Simultaneous Analysis of the Co-Administered Antihypertensives, Telmisartan and Carvedilol in Biological Fluids and Tablets: Greenness and Blueness Assessment.","authors":"Aya Saad Radwan, Galal Magdy, Mahmoud El-Maghrabey, Fotouh R Mansour, Lateefa A Al-Khateeb, Wael A Mahdi, Sultan Alshehri, Bandar R Alsehli, Wejdan T Alsaggaf, Ali I Abd Alrheam, Mohamed A El Hamd","doi":"10.1007/s10895-024-04064-2","DOIUrl":"https://doi.org/10.1007/s10895-024-04064-2","url":null,"abstract":"Hypertension is the predominant risk factor for cardiovascular diseases and mortality. This study presents the first method for the simultaneous analysis of the co-administered antihypertensive drugs, Carvedilol (CAR) and Telmisartan (TEL) using a fast, highly sensitive, environmentally friendly, and cost-effective second derivative synchronous spectrofluorimetric approach. The fluorescence of CAR and TEL was quantified at 243 nm and 274.4 nm, respectively. The measurement was conducted using a wavelength difference (Δλ) of 100.0 nm. The proposed technique showed remarkable linearity (r = 0.9999) within the defined concentration ranges for CAR (1.0-20.0 ng/mL) and TEL (1.0-50.0 ng/mL). The results showed that the suggested approach has very high sensitivity, with limits of detections of 0.247 and 0.120 ng/mL for CAR and TEL, respectively. This indicates that the developed technique is suitable for bioanalytical purposes. The within-run precisions, including both inter-day and intra-day variations, for both analytes were found to be less than 0.79% RSD. The implemented method was successfully utilized to concurrently determine the specified pharmaceuticals in both tablet dosage forms and human plasma samples, resulting in excellent %recoveries and low % RSD values. The method's exceptional greenness and eco-friendliness were demonstrated by the GAPI and AGREE metrics. Moreover, the practicality, applicability, and economical nature of the method were assessed using BAGI tool. The three metrics showed how practical and sustainable the new approach is, and how well it can be applied for the regular analysis of the studied drugs. The ICHQ2 (R1) criteria were followed for the validation of the suggested approach.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824356","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: Ratiometric Fluorescence and Chromogenic Probe for Trace Detection of Selected Transition Metals. 更正：用于痕量检测某些过渡金属的比率荧光和致色探针。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-14 DOI: 10.1007/s10895-024-04087-9

Muhammad Saleem, Abrar Hussain, Muhammad Rauf, Salah Uddin Khan, Sajjad Haider, Muhammad Hanif, Muhammad Rafiq, Sang Hyun Park

引用次数: 0

Recent Research Progress of Benzothiazole Derivative Based Fluorescent Probes for Reactive Oxygen (H₂O₂ HClO) and Sulfide (H₂S) Recognition.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-13 DOI: 10.1007/s10895-024-04016-w

Hong Huang, Shaobang Pan, Bin Yuan, Nvzhi Wang, Lingfei Shao, Zhen-E Chen, Hai Zhang, Wen-Zhang Huang

引用次数: 0