Journal of Fluorescence最新文献_第7页

Aggregation Behavior of CHR-bis(BODIPY) Bichromophores in THF-water Mixtures: Effect of Linking Positions and Aryl-spacer Substituents. CHR 双(BODIPY)重色团在 THF-水混合物中的聚合行为：连接位置和芳基间隔取代基的影响。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-10-02 DOI: 10.1007/s10895-024-03980-7

Artem S Sherudillo, Alexander A Kalyagin, Lubov A Antina, Mikhail B Berezin, Elena V Antina

{"title":"Aggregation Behavior of CHR-bis(BODIPY) Bichromophores in THF-water Mixtures: Effect of Linking Positions and Aryl-spacer Substituents.","authors":"Artem S Sherudillo, Alexander A Kalyagin, Lubov A Antina, Mikhail B Berezin, Elena V Antina","doi":"10.1007/s10895-024-03980-7","DOIUrl":"https://doi.org/10.1007/s10895-024-03980-7","url":null,"abstract":"Aggregation-caused quenching effect (ACQ) greatly limits the practical use of many organic luminophores in biomedicine, optics and electronics. The comparative analysis of aggregation characteristics of CHR-bis(BODIPY) bichromophores 1-6 with R = H, Ph, MeOPh and various linking positions (α,α-; α,β-; β,β- and β',β'-) in THF-water mixtures with different water fractions or dye concentrations is first presented in this article. Both the linking style 1-4 and the arylation of the spacer with phenyl (Ph-) 5 or methoxyphenyl (MeOPh-) 6 substituents strongly affect the formation of luminophore aggregated forms in binary THF-water mixtures. The α,α-and β,β-isomers (1 and 3) form non-fluorescent H-type aggregates in THF-water mixtures with fw > 70%. The α,β-; β',β'-isomers (2, 4) and the MeOPh-substituted β,β-bichromophore 6 are characterized by predominant formation fluorescent aggregates. All bichromophores are characterized by the presence of residual amounts of non-aggregated forms in binary mixtures with maximum water content. The results are useful for controlling the aggregation behavior and spectral characteristics of CHR-bis(BODIPY) bichromophores in aqueous-organic media, which is important in the development of biomarkers and PDT agents.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142361642","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

Label-Free Detection of Programmed Death-Ligand 1 for Prognosis Using a Truncated Aptamer and SYBR Green I. 使用截短的适配体和 SYBR 绿 I 无标记检测程序性死亡配体 1 以进行预后分析

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-10-01 DOI: 10.1007/s10895-024-03960-x

Ling Li, Zheng-Ling Li, Wei Wang, Xin-Xin Long, Ping Liu, Guo-Tian Wang, Shi-Qing Sun, Rong-Lian Du

{"title":"Label-Free Detection of Programmed Death-Ligand 1 for Prognosis Using a Truncated Aptamer and SYBR Green I.","authors":"Ling Li, Zheng-Ling Li, Wei Wang, Xin-Xin Long, Ping Liu, Guo-Tian Wang, Shi-Qing Sun, Rong-Lian Du","doi":"10.1007/s10895-024-03960-x","DOIUrl":"https://doi.org/10.1007/s10895-024-03960-x","url":null,"abstract":"The rapid and accurate detection of programmed death-ligand 1 (PD-L1) expression is of great value in the diagnosis and treatment of tumors. ELISA-based traditional method is the gold standard for protein detection, but there are still some shortcomings, especially the antigen-antibody dependence, greatly increased the detection time and cost. This work constructed a label-free fluorescent probe for rapid and sensitive detection of PD-L1 using a truncated aptamer as recognition molecules and double-stranded DNA specific dyes (SYBR Green I) as signal units. After a series of optimization conditions, this probe has good detection capability for PD-L1 in buffer solution with the detection limit as low as 0.68 ng/mL. Due to the specific recognition ability of aptamer and target, this method also has good selectivity for PD-L1 detection. The recovery of PD-L1 in human serum samples ranges from 86.20 to 96.36%. Compared with other methods, this strategy does not need to be marked, and does not need other complex design and purification process, but simple operation process and strong anti-interference ability. The whole detection process can be completed within 20 min and has good application prospect. This work will provide reference for drug dosage and prognosis evaluation of specific tumor therapy.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142348034","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

Laboratory Investigation of Dodecylbenzene Detection in Seawater Via Fluorometric Index of Excitation-emission Matrix Spectra. 通过激发-发射矩阵光谱的荧光指数检测海水中十二烷基苯的实验室研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-10-01 DOI: 10.1007/s10895-024-03978-1

Jianping Liao, Zhifeng Liu, Weiqi Yang, Chen Tian, Xueyu Wu, Zhiping Zhu, Zhenggang Wang

引用次数: 0

Temperature-Dependent Rotational Dynamics of a Polar Probe in Non-Polar Aprotic Solvents: Interplay of Solvent Viscosity and Size Effect. 非极性 Aprotic 溶剂中极性探针随温度变化的旋转动力学：溶剂粘度和尺寸效应的相互作用。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-10-01 DOI: 10.1007/s10895-024-03973-6

Anil Kumar, C G Renuka

引用次数: 0

Selective Detection of Picric Acid by Benzodiazepine Containing Enaminone Core as Receptor and Its Application to Real Water Sample Analysis. 以含烯酮核的苯并二氮杂卓为受体选择性检测苦味酸及其在实际水样分析中的应用。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-10-01 DOI: 10.1007/s10895-024-03925-0

Rajendran Eswaran, Loganathan Selvaraj, Santhiya Ramasamy, Sivaraman Gandhi, Seenivasa Perumal Muthu

{"title":"Selective Detection of Picric Acid by Benzodiazepine Containing Enaminone Core as Receptor and Its Application to Real Water Sample Analysis.","authors":"Rajendran Eswaran, Loganathan Selvaraj, Santhiya Ramasamy, Sivaraman Gandhi, Seenivasa Perumal Muthu","doi":"10.1007/s10895-024-03925-0","DOIUrl":"https://doi.org/10.1007/s10895-024-03925-0","url":null,"abstract":"Nitroaromatic compounds are highly explosive and illegitimate substances. Over a decade, chemists have been affianced in extensive research on the selective and sensitive detection of these nitroaromatic explosives for homeland security and environmental protection. The benzodiazepine-based enaminone (BDE) receptor has been synthesized by aqueous extract of onion catalyzed three-component reaction between o-phenylenediamine, dimedone with an aldehyde. The BDE probe is well analyzed and applied to a sensor that selectively detects picric acid (PA). UV-Vis and fluorescence spectroscopy were used to investigate the photophysical responses of the receptor (BDE). From the observed results BDE found turn-off fluorescence with the addition of picric acid and the lowest limit of detection and limit of quantification was achieved about 24.6 nM and 73.8 nM. The fluorescence quantum yield was attained about 0.28. The BDE-PA adduct formation was confirmed by 1H NMR titration analysis. The Job's plot analysis was performed through 1H NMR titrations and established the binding stoichiometry ratio of the BDE-PA adduct as 1:1 ratio. Further, DFT calculations supported the observed photophysical responses of BDE-PA adduct to confirm the molecular level interactions. The receptor was effectively applied to approximate level of picric acid in real water sample analysis.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142348040","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

Synthesis of Ferrocenyl Chalcone-Containing Aminourea Schiff Bases and Their Detection on Tryptophan. 含二茂铁查耳酮的氨基脲席夫碱的合成及其在色氨酸上的检测。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-09-30 DOI: 10.1007/s10895-024-03967-4

Yuting Liu, Chi Dang, Dawei Yin, Ruilin Zheng, Zixu Zhang, Yi Zhou, Jiabao Chen

{"title":"Synthesis of Ferrocenyl Chalcone-Containing Aminourea Schiff Bases and Their Detection on Tryptophan.","authors":"Yuting Liu, Chi Dang, Dawei Yin, Ruilin Zheng, Zixu Zhang, Yi Zhou, Jiabao Chen","doi":"10.1007/s10895-024-03967-4","DOIUrl":"https://doi.org/10.1007/s10895-024-03967-4","url":null,"abstract":"In this paper, 1-phenyl-3-ferrocenylenone aminourea Schiff bases were synthesized by a novel method. A multifunctional molecular probe (Probe A) of 1-phenyl-3-ferrocenylenone, carbon-based solid acid, aminourea, and anhydrous ethanol was synthesized by adding them to a vessel at elevated temperatures and refluxing for the synthesis of a multifunctional molecular probe (Probe A) of 1-phenyl-3-ferrocenylenone aminourea Schiff base, and it was found that it recognizes tryptophan (Trp) in solution, and that the catalyst can be reused more than five times after recycling. This method is characterised by low cost, high efficiency, green environment and no waste acid. Fluorescence and UV spectra show that probe A specifically recognizes tryptophan (Trp) without interference by other amino acids or pH and time does not affect it within 45 min. The lowest limit of detection for Trp was 1.307 × 10- 4 mol/L for probe A. The binding ratios of probe A to Trp were measured to be 1:1 by Job's plotting method, respectively. The complexation constant of probe A with Trp was found to be 2.733 × 107 L/mol according to the Benesi-Hildebrand equation. The bonding mechanism was explored through IR spectroscopy and ¹H NMR titration.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142348044","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

The Interaction Of Homodimer Styrylcyanine Dyes With Sodium Dodecyl Sulfate And Triton X-100. 同二聚体苯乙烯基丙氨酸染料与十二烷基硫酸钠和 Triton X-100 的相互作用。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-09-28 DOI: 10.1007/s10895-024-03921-4

Eldar N Kurtaliev, Akmal Sh Yarmukhamedov, Asalya A Djamalova, Negmat Nizomov, Sergei N Terekhov

引用次数: 0

Effect of Temperature on Rotational Dynamics of 3BT7D2H-one in Acetone and Ethyl Acetate Solvents. 温度对丙酮和乙酸乙酯溶剂中 3BT7D2H-one 旋转动力学的影响。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-09-27 DOI: 10.1007/s10895-024-03935-y

Anil Kumar, C G Renuka

引用次数: 0

Colorimetric and Fluorimetric Detection of Fe(III) Using a Rhodamine-Imidazole Hydrazone Based Chemosensor: Photophysical Properties, DFT, TGA, and DSC Studies. 使用基于罗丹明-咪唑腙的化学传感器进行铁(III)的比色和荧光检测：光物理性质、DFT、TGA 和 DSC 研究。

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-09-26 DOI: 10.1007/s10895-024-03942-z

Vardhaman Babagond, Kariyappa S Katagi, Mahesh Akki, Ashwini Jaggal

{"title":"Colorimetric and Fluorimetric Detection of Fe(III) Using a Rhodamine-Imidazole Hydrazone Based Chemosensor: Photophysical Properties, DFT, TGA, and DSC Studies.","authors":"Vardhaman Babagond, Kariyappa S Katagi, Mahesh Akki, Ashwini Jaggal","doi":"10.1007/s10895-024-03942-z","DOIUrl":"https://doi.org/10.1007/s10895-024-03942-z","url":null,"abstract":"Rhodamine-imidazole hydrazones (RIH-1 & RIH-2) based chemosensors have been synthesized. These are characterised and evaluated by FT-IR spectroscopy, 1H-NMR, 13C-NMR, LCMS, absorption and fluorescence spectroscopy. These chemosensors exhibit enhanced sensitivity and selectivity in detecting the biologically significant Fe3+ metal ion through both colorimetric and fluorescence changes. The optical properties have been investigated using binary acetonitrile-water (7:3 v/v) semi-aqueous solution. The probe RIH-1 can be deployed as a fluorescent and colorimetric probe for the detection of Fe3+ ion. It shows an absorption band at 559 nm and an intensity band at 579 nm increasing up to 50-fold with the increase in the concentration of Fe3+ with the detection limit as low as 11nM. In the visible light, RIH-1 helps in the detection of Fe3+ ion through the naked eye, while the addition of Fe3+ to the probe RIH-1 results in a colour change from colourless to pink. This is primarily due to the opening of the lactone ring in RIH-1. Notably, RIH-1 probe displays a high quantum yield of 0.51, after binding with Fe3+ ions. Indeed, it has been found that sensor RIH-1 is very effective in sensing Fe3+ ions through both fluorescence based and visual detection methods. Additionally, DFT studies of these chemosensors have been evaluated, TGA and DSC analysis showed good thermal stability.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142348029","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

Synthesis, Structure and Luminescence Properties of Mn-doped MgAl₂O₄ Red-Emitting Phosphors with Varying Sintering Temperature. 不同烧结温度下掺锰 MgAl2O4 发红荧光粉的合成、结构和发光特性

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-09-26 DOI: 10.1007/s10895-024-03937-w

Jiahao Zha, Chongjun He, Fangzhou Chen, Hongwei Wang, Biao Dong, Lijuan Liu, Mingjun Xia, Chenguang Deng, Qian Li, Yuangang Lu, Huiting Chen

{"title":"Synthesis, Structure and Luminescence Properties of Mn-doped MgAl2O4 Red-Emitting Phosphors with Varying Sintering Temperature.","authors":"Jiahao Zha, Chongjun He, Fangzhou Chen, Hongwei Wang, Biao Dong, Lijuan Liu, Mingjun Xia, Chenguang Deng, Qian Li, Yuangang Lu, Huiting Chen","doi":"10.1007/s10895-024-03937-w","DOIUrl":"https://doi.org/10.1007/s10895-024-03937-w","url":null,"abstract":"Oxide matrix red-emitting phosphors are deemed as excellent color converters for white light emitting diodes (WLEDs) and laser diodes (LDs). Manganese-doped MgAl2O4 powder was synthesized by a solid-state reaction method at different sintering temperatures. Microstructure shows that grain size is mainly in the range of 0.2-5 μm, and grain agglomeration occurs with increased sintering temperature. XPS analysis indicates that the doped Mn ion exhibits a valence state of + 4 within the MgAl2O4 matrix. The diffraction peak of the phosphors is shifted by the sintering temperature, which affects lattice constant. Upon excitation by 300 nm ultraviolet light, the samples emit asymmetric broadband red light within the range of 620-720 nm, attributed to Mn4+ ion's transition from 2Eg to 4A2g states. With the increasing temperature, the main emission peak shifts from 677 nm to 650 nm, ascribed to the change in energy level (2Eg) resulting from the reduction of Al2O3 phase. Crystal field theory confirmed that Mn4+ ions are within a strong crystal field environment created by MgAl2O4 matrix. By affecting particle size and crystallinity, the sintering temperature influences the fluorescence lifetime of the Mn4+ ion. Notably, these red-emitting phosphors exhibits remarkable thermal stability as their emission intensity remains approximately at 58% of initial intensity even at elevated temperature (435 K). Consequently, Mn4+: MgAl2O4 red-emitting phosphors with high thermal stability render them promising candidates for WLED applications.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142348046","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