Journal of Fluorescence最新文献

Synthesis, Trans-Cis Photoisomerization, Fluorescence Decay Studies of Methoxy Ester Functionalized Alkoxy Side Chain Azobenzene Compounds and Their Photoluminescence Dynamics.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-23 DOI: 10.1007/s10895-024-04077-x

Raveendra Bhat, Venkatraman Hegde, Vinayak Adimule, Vandna Sharma, Pankaj Kumar, Santosh Khatavi, Santosh Nandi, Rangappa Keri

{"title":"Synthesis, Trans-Cis Photoisomerization, Fluorescence Decay Studies of Methoxy Ester Functionalized Alkoxy Side Chain Azobenzene Compounds and Their Photoluminescence Dynamics.","authors":"Raveendra Bhat, Venkatraman Hegde, Vinayak Adimule, Vandna Sharma, Pankaj Kumar, Santosh Khatavi, Santosh Nandi, Rangappa Keri","doi":"10.1007/s10895-024-04077-x","DOIUrl":"https://doi.org/10.1007/s10895-024-04077-x","url":null,"abstract":"In this study, a series of new methoxy ester functionalized core fluorinated, chloro-fluorinated azobenzene derivatives were synthesized. The molecular structures of the azobenzene derivatives (3a-3c and 4a-4c) were confirmed through various analytical methods, with variations in the alkoxy chain length on one end of the aromatic ring. Optical absorption studies of 3a, 3b revealed π-π* transitions around 368-392 nm. Further, polarizing optical microscope (POM) studies of 3a, 3b revealed birefringent textures, and their phase transitions were investigated using differential scanning colorimetry (DSC) studies. The trans-to-cis photoisomerization of 3a, 3b transpired over 3600s whereas, thermal back relaxation (cis-to-trans) isomerization took 0.75 h. Room temperature photoluminescence (RTPL) studies of 3a-3c and 4a-4c unveiled weak emission intensity peak at ~ 450 nm (blue region) when excited at 400 nm. Steady-state photoluminescence (SSPL) studies of 3a-3c, 4a-4c revealed a broad emission band in the violet region of the visible spectrum with significantly large Stokes shifts, indicating the presence of highly energized excited states and formation of additional energy levels during photoexcitation. Fluorescence decay (FLD) studies of 3a-3c, 4a-4c unveiled average lifetime (τ) dwells between 8.2 ps and 70.4 ps. The average lifetime (τ) was found to increase with the increase in the length of the alkoxy chain. Phosphorescence decay (PD) profiles of 3a-3c, 4a-4c showed average lifetime (τ) fluctuate around 373 ns to 463 ns. The obtained core fluorinated, chloro-fluorinated azobenzene derivatives having different lengths of the alkoxy side chain can find potential applications in optical storage and display technologies.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876991","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

Design and Characterization of Novel Naphthalimide Fluorescent Probe for H₂S Detection in Human Serum.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-23 DOI: 10.1007/s10895-024-04071-3

Andrea Dandić, Mirela Samardžić, Mateja Budetić, Izabella Doris Panić, Ines Drenjančević, Nikolina Kolobarić, Gábor Mikle, Barna Kovács, Aleksandar Széchenyi

{"title":"Design and Characterization of Novel Naphthalimide Fluorescent Probe for H2S Detection in Human Serum.","authors":"Andrea Dandić, Mirela Samardžić, Mateja Budetić, Izabella Doris Panić, Ines Drenjančević, Nikolina Kolobarić, Gábor Mikle, Barna Kovács, Aleksandar Széchenyi","doi":"10.1007/s10895-024-04071-3","DOIUrl":"https://doi.org/10.1007/s10895-024-04071-3","url":null,"abstract":"In this work, a novel fluorescent probe (compound 2) based on the Intramolecular charge transfer (ICT) mechanism was designed and successfully applied to determine H2S in human serum. Fluorophore 1,8-naphthalimide was chosen, while the azide group was the recognition group for H2S determination. By introducing p-toluidine moiety on the imide part of the molecule, a donor-acceptor (D-A) conjugated system was formed. Prepared compound 2 was characterized using 1H, 13C NMR spectroscopy, and elemental analysis. Fluorescence spectra measurements were carried out, and several influences on fluorescence intensity were investigated, including pH, time dependence, selective response, and influence of H2S concentration. Conducted experiments, including the calculated detection limit of the prepared fluorescent probe, which was found to be 0.085 µmol·L- 1, showing that compound 2 could be applied for H2S detection in human serum and could detect low micromolar concentrations of H2S. Finally, compound 2 was successfully applied to detect H2S in a human serum sample, whereby the concentration of H2S was 17.2 µmol·L- 1. The accuracy of the H2S determination was confirmed with the standard addition method.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876876","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 Sensitive and Selective Detection of Hg²⁺ ions and Antibacterial Activity Using a Schiff-base Derivative.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-22 DOI: 10.1007/s10895-024-04070-4

Afnan M Alnajeebi, Rana Yahya, Alaa Shafie, Amal Adnan Ashour, Mohammed Fareed Felemban, Faris J Tayeb

引用次数: 0

Synthesize of an Azo Compound: Investigation its Optical Nonlinear Properties and DFT Study.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-22 DOI: 10.1007/s10895-024-04082-0

Sadiq M H Ismael, Numan S Hashim, F A Al-Saymari, H A Sultan, Qusay M A Hassan, Kawkab Ali Hussein, C A Emshary, Hanadi M Jarallah

{"title":"Synthesize of an Azo Compound: Investigation its Optical Nonlinear Properties and DFT Study.","authors":"Sadiq M H Ismael, Numan S Hashim, F A Al-Saymari, H A Sultan, Qusay M A Hassan, Kawkab Ali Hussein, C A Emshary, Hanadi M Jarallah","doi":"10.1007/s10895-024-04082-0","DOIUrl":"https://doi.org/10.1007/s10895-024-04082-0","url":null,"abstract":"In the present work, a diazonium salt is prepared by a diazonium reaction of sulfamerazine in the presence of aqueous hydrochloric acid and sodium nitrate. Structural confirmation of azo compounds synthesize is achieved by mass spectrometry, infrared spectroscopy, and 1H, 13C nuclear magnetic resonance. The sample geometry is derived using Density Functional Theory (DFT) and DT-DFT applied to the basis set B3LYPL6-311 + G(d,p). An investigation is conducted on the optical nonlinear (ONL) properties of the azo compounds formed under the excitation with a low power 532 nm laser beam using diffraction patterns (DPs) and a typical Z-scan combined with optical limiting. The Fresnel-Kirchhoff integral provides numerically obtained boundary conditions in the sense of experimentally obtained values. As high as 2 × 10-7 cm2/W of nonlinear refractive index (NLRI), n2, 1.24 × 10-3 cm/W of the nonlinear absorption coefficient (NLAC), β, and 15.5 mW of the optical limiting (OL) threshold, TH, are obtained.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876963","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

Impact of Sensitizer Yb³⁺ on Structural and Optical Properties of AE₂SiO₄ (AE = Ba, Ca, Sr) Orthosilicates.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-19 DOI: 10.1007/s10895-024-04074-0

Aastha Sahu, Nand Kumar Shante, Jai Singh, K Senthil Kannan, R P Patel

{"title":"Impact of Sensitizer Yb3+ on Structural and Optical Properties of AE2SiO4 (AE = Ba, Ca, Sr) Orthosilicates.","authors":"Aastha Sahu, Nand Kumar Shante, Jai Singh, K Senthil Kannan, R P Patel","doi":"10.1007/s10895-024-04074-0","DOIUrl":"https://doi.org/10.1007/s10895-024-04074-0","url":null,"abstract":"In the present work, BaSrSiO4: Yb and CaSrSiO4: Yb (Yb = 0 mol %, 1 mol %, 2 mol % and 3 mol %) nanophosphors were synthesized using the co-precipitation method, and their comparative structural and optical properties were studied to demonstrate the effect of Yb ion on the characteristic properties of the prepared nanophosphors. The powder X-ray diffraction (PXRD) patterns of BaSrSiO4:Yb and CaSrSiO4:Yb suggest the formation of a single-phase orthorhombic structure with space groups Pbnm and Pna21, respectively. The Raman shifts in BaSrSiO4 (BSS) and CaSrSiO4 (CSS) indicate out-of-phase bending of Sr-O and symmetric stretching of Si-O. The FTIR spectra show bands in the spectra between 1033 and 1063 cm-1, which can be attributed to the vibration of the Si-O-Si bond in both samples. The result also supported the formation of orthosilicate. SEM revealed agglomerated chunks in the BSS samples and rod-like structures in the CSS samples. The PL spectra show a significant change in the intensity of the emission peak at 975 nm following the transition 2F7/2 → 2F5/2 for different alkali earth metals (Ca, Ba), which is related to the energy level and formation of Yb2+ ion in the respective hosts. In CaSrSiO4 doped Yb a red emitting band at 700 nm is observed which is not present in BaSrSiO4 host.","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142854305","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 and Excited State Proton Transfer (ESPT) Studies of 2-(6-Substitutedbenzo[d]Thiazol-2-Yl)Naphthalen-1-Ol Derivatives.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-19 DOI: 10.1007/s10895-024-04072-2

Jyoti Yadav, Subrato Bhattacharya, Ram Pal Chaudhary

引用次数: 0

Thiol-Functionalized Cobalt Ferrite (CoFe₂O₄@MPTS) Nanoparticles as Cutting-Edge Adsorbents for Bovine Serum Albumin.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-18 DOI: 10.1007/s10895-024-04084-y

Muhammad Tariq Shah, Esra Alveroglu, Abdullah

{"title":"Thiol-Functionalized Cobalt Ferrite (CoFe2O4@MPTS) Nanoparticles as Cutting-Edge Adsorbents for Bovine Serum Albumin.","authors":"Muhammad Tariq Shah, Esra Alveroglu, Abdullah","doi":"10.1007/s10895-024-04084-y","DOIUrl":"https://doi.org/10.1007/s10895-024-04084-y","url":null,"abstract":"This paper describes the synthesis of CoFe₂O₄ nanoparticles via a simple ultrasonic-assisted co-precipitation method and their functionalization with thiol groups using (3-Mercaptopropyl)trimethoxysilane (MPTS) as the functionalizing agent. The use of ultrasonic energy not only serves as a green energy source but also reduces the reaction time fivefold compared to conventional methods. The synthesized CoFe₂O₄ nanoparticles were characterized for their surface and internal properties using instrumental techniques such as Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Vibrating Sample Magnetometer (VSM). The functionalized nanoparticles were applied for the effective adsorption of bovine serum albumin (BSA) from a buffered aqueous medium. To enhance the adsorption performance, the influence of pH, amount of solid adsorbent, initial BSA concentration, shaking time, and temperature on protein adsorption was investigated. Lagergren pseudo-second-order adsorption kinetics fitted the BSA adsorption data well, with an acceptable R² value of 0.976. Additionally, the BSA adsorption data were analyzed using Langmuir and Freundlich isotherm models, and it was concluded that the experimental data followed the Langmuir equation more closely than the Freundlich equation. At an initial pH of 5.57 (acetate buffer), the adsorption capacity (Q₀) for BSA protein was found to be 200 mg/g. The thermodynamic study revealed ΔS° and ΔH° values of 17.40 J/mol·K and - 45.37 kJ/mol, respectively.","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":"142846770","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

Fluorescent Polymer Nanocomposites as Novel Drug-Loading and Targeted Delivery Nanocarriers for Glioma Therapy by Modulating ERBB4.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-18 DOI: 10.1007/s10895-024-04078-w

Jian Li, Hui-Qing Lv, Fei Wu, Xue-En Li

引用次数: 0

Insights into Cancer Cell Imaging Probes Based on Chalcone Scaffolds: Theoretical and Experimental Perspectives.

IF 2.6 4区化学

Journal of Fluorescence Pub Date : 2024-12-18 DOI: 10.1007/s10895-024-04081-1

A Mumthaj, M Umadevi, Mookkandi Palsamy Kesavan, Lokesh Ravi, R Bhaskar

引用次数: 0

Correction: Symmetrical Ligand's Fabricated Porous Silicon Surface Based Photoluminescence Sensor for Metal Detection and Entrapment.