Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy最新文献

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Highly efficient NIR-Ⅱ window photoluminescence up to 1000  nm using heteroatomic fused-ring radicals.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-16 DOI: 10.1016/j.saa.2024.125592
Jun-Yang Hui, Hai-Ping Zhou, Ying Sun, You-Liang Li, Qing-Qing Pan, Yu-He Kan, Zhong-Min Su
{"title":"Highly efficient NIR-Ⅱ window photoluminescence up to 1000  nm using heteroatomic fused-ring radicals.","authors":"Jun-Yang Hui, Hai-Ping Zhou, Ying Sun, You-Liang Li, Qing-Qing Pan, Yu-He Kan, Zhong-Min Su","doi":"10.1016/j.saa.2024.125592","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125592","url":null,"abstract":"<p><p>Neutral radicals have the potential to construct pure organic light-emitting diodes (OLEDs) with internal quantum efficiencies reaching 100%. However, neutral radical luminescent materials with emission wavelengths in the second near-infrared (NIR-II) window are rare. Herein, a serial of neutral donor-bridge-acceptor (D-π-A) type radical derivatives are investigated. The dominant elements influencing the luminescent properties of neutral radicals, such as chemical stability, excited state characteristics, radiative decay rate (k<sub>r</sub>) and internal conversion rate (k<sub>IC</sub>) constants are taken into consideration. Theoretical calculations reveal that introducing heteroatomic fused-rings into neutral radicals can modulate the chemical stability and result in a red shift of the emission wavelength spectrum. In the presence of charge transfer characteristics, by increasing the effective overlap between the hole and electron wavefunctions, the k<sub>r</sub> constants of the neutral D-π-A type radicals increase. In addition, avoiding the geometric relaxation between the lowest excited state (D<sub>1</sub>) and the ground state (D<sub>0</sub>), as well as reducing electron-vibration coupling and non-adiabatic coupling in the low-frequency region can effectively decrease the k<sub>IC</sub> constants. Our study proposes an innovative design approach aiming to develop stable and efficient NIR-II window neutral radical luminescent materials utilizing heteroatomic fused-rings as key elements.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125592"},"PeriodicalIF":0.0,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Copper-based biomimetic nanozymes with multi-enzyme activity for phosphate detection.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-15 DOI: 10.1016/j.saa.2024.125599
Zhendong Fu, TongJia Zhang, Cong Chen, Xiaoyu Wang, Liping Wang
{"title":"Copper-based biomimetic nanozymes with multi-enzyme activity for phosphate detection.","authors":"Zhendong Fu, TongJia Zhang, Cong Chen, Xiaoyu Wang, Liping Wang","doi":"10.1016/j.saa.2024.125599","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125599","url":null,"abstract":"<p><p>Nanozymes are nanoparticles with enzymatic activity, which are widely used in environmental and antibacterial research. Herein, we designed and synthesized novel amorphous nanozyme Cu-Im NPs with multiple enzyme-mimicking activities. Cu-Im NPs have the same active sites as natural laccase. In addition, the active center is similar to that of carbonic hydrolase, replacing the zinc ions with copper ions. Meanwhile, Cu-Im NPs also possess peroxidase-like activity. We reveal the multi-enzyme catalytic mechanisms of Cu-Im NPs. Notably, phosphate inhibits the laccase-like and peroxidase-like activities of Cu-Im NPs while activating their hydrolase activity. Based on these findings, we have developed a sensitive and selective method for detecting phosphate anions.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125599"},"PeriodicalIF":0.0,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new RRS method for measurement of temperature with magnetic-liquid crystal nanosurface molecularly imprinted polymer probe.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-15 DOI: 10.1016/j.saa.2024.125597
Zhuxin Chen, Chenguang Yi, Chongning Li, Aihui Liang, Guiqing Wen, Zhiliang Jiang
{"title":"A new RRS method for measurement of temperature with magnetic-liquid crystal nanosurface molecularly imprinted polymer probe.","authors":"Zhuxin Chen, Chenguang Yi, Chongning Li, Aihui Liang, Guiqing Wen, Zhiliang Jiang","doi":"10.1016/j.saa.2024.125597","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125597","url":null,"abstract":"<p><p>A new magnetic-liquid crystal nanosurface molecularly imprinted polymer (5CB-Fe<sub>3</sub>O<sub>4</sub>@MIP) resonance Rayleigh scattering temperature sensor was prepared, using liquid crystal 4'-cyano-4'-pentylbiphenyl as the temperature sensing element, nano-Fe<sub>3</sub>O<sub>4</sub> as the substrate, methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the crosslinking agent. It was characterized by molecular spectroscopy, scanning electron microscopy and Fourier transform infrared spectroscopy. The thermosensitive effect of 11 liquid crystals, that is, the relationship between RRS and temperature, was studied. The 4'-cyano-4'-pentylbiphenyl exhibits best sensitive. The 5CB-Fe<sub>3</sub>O<sub>4</sub>@MIP temperature sensor had a strong resonance Rayleigh scattering peak at 370 nm. The resonance Rayleigh scattering intensity increased with the increase of temperature, and showed a good linear relationship. The temperature range of measurement was 30-95 °C, with a slope of 16.8 a.u./°C. And by optimizing the preparation conditions of molecularly imprinted polymers, the best preparation conditions were obtained: template molecule: 0.25 mmol, functional monomer: 2.5 mmol, cross-linker: 5 mmol, reaction temperature: 70 °C, reaction time: 2.5 h. As a comparison, we also studied the effect of Fe<sub>3</sub>O<sub>4</sub> with different particle sizes on the 5CB-Fe<sub>3</sub>O<sub>4</sub>@MIP temperature sensor. At the same time, the temperature sensor is applied to the temperature measurement of cooling water, which is effective.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125597"},"PeriodicalIF":0.0,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
1,10-phenanthroline appended novel Schiff base as a selective fluorescent chemosensor for nerve agent stimulants.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-15 DOI: 10.1016/j.saa.2024.125601
Aastha Palta, Priya Thakur, Gulshan Kumar, Priya Vashisht, Vijay Luxami
{"title":"1,10-phenanthroline appended novel Schiff base as a selective fluorescent chemosensor for nerve agent stimulants.","authors":"Aastha Palta, Priya Thakur, Gulshan Kumar, Priya Vashisht, Vijay Luxami","doi":"10.1016/j.saa.2024.125601","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125601","url":null,"abstract":"<p><p>A simple, tailor-made, novel chemosensor based on 1,10-phenanthroline Schiff base incorporating N, N-Diethylamino salicylaldehyde (1) was designed and synthesized. The sensing ability of chemosensor 1 was tested via colorimetric, UV-Vis and fluorescence spectroscopy. Chemosensor 1 could effectively and specifically detect diethylchlorophosphate (DCP) in acetonitrile displaying naked eye colour change from pale yellow to dark yellow while fluorogenic colour changes from blue to pink fluorescence (365 nm UV lamp irradiation). The spectral changes corroborated the colorimetric results with appreciable bathochromic shifts of 44 and 75 nm in absorption and emission spectra respectively. With DCP, the spectral changes may be attributed to the reaction of the phosphorus group with the hydroxyl group which inhibits the ICT within the molecule. The colorimetric and spectral changes were reversed with the addition of triethylamine (TEA) signifying the reversibility of chemosensor 1. Significantly, the detection limit of 1 for DCP ions was evaluated to be 4.4 nM with the binding constant value of 1.9 × 10<sup>4</sup> M<sup>-1</sup>. Furthermore, chemosensor 1 showed excellent performance for convenient DCP detection via filter paper fabricated test strips.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125601"},"PeriodicalIF":0.0,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering dual-mode near-infrared ratiometric thermometers based on rare earth-doped molybdates.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-15 DOI: 10.1016/j.saa.2024.125603
Mingqin Huang, Mengmeng Dai, Kejie Li, Yanling Wei, Zuoling Fu
{"title":"Engineering dual-mode near-infrared ratiometric thermometers based on rare earth-doped molybdates.","authors":"Mingqin Huang, Mengmeng Dai, Kejie Li, Yanling Wei, Zuoling Fu","doi":"10.1016/j.saa.2024.125603","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125603","url":null,"abstract":"<p><p>Near-infrared optical thermometers have sparked great interest for their ability to provide non-destructive testing and high-resolution. However, the restricted relative sensitivity and single temperature measurement mode represent the current limitations of luminescent thermometers. Herein, near-infrared dual-mode ratiometric thermometers with high sensitivity in La<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>: Yb<sup>3+</sup>, Ln<sup>3+</sup> (LMO: YbLn, Ln = Er, Ho, Nd) phosphors were designed. Interestingly, excellent thermal enhancement of near-infrared emission (Nd<sup>3+</sup>: <sup>4</sup>F<sub>3/2</sub> → <sup>4</sup>I<sub>9/2</sub>) over 492 times was observed through effective phonon-assisted energy transfer process, resulting in an ultra-high relative sensitivity of 2.84 % K<sup>-1</sup> at 313 K. Furthermore, a near-infrared ratiometric thermometer was fabricated utilizing the <sup>5</sup>I<sub>6</sub> energy level of Ho<sup>3+</sup> (1200 nm) and the <sup>4</sup>I<sub>13/2</sub> energy level of Er<sup>3+</sup> (1550 nm). Relying on the luminescence thermal enhancement of Er<sup>3+</sup> and the luminescence thermal burst of Ho<sup>3+</sup>, a relative sensitivity of 0.31 % K<sup>-1</sup> at 573 K was obtained. The excellent near-infrared emission of the sample was reasonably confirmed through spectral monitoring of penetrating chicken breast of different thicknesses. These findings provide a viable approach for the design of near-infrared phosphors, which has the potential to impact the field of near-infrared temperature sensing.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125603"},"PeriodicalIF":0.0,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon dot-based molecularly imprinted polymer fluorescent sensor for the detection of propranolol in plasma.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-14 DOI: 10.1016/j.saa.2024.125590
Jialin Liu, Ruizhen Li, Lei Qin, Dongju Fu, Moeiling Wang, Weifeng Liu, Xuguang Liu
{"title":"Carbon dot-based molecularly imprinted polymer fluorescent sensor for the detection of propranolol in plasma.","authors":"Jialin Liu, Ruizhen Li, Lei Qin, Dongju Fu, Moeiling Wang, Weifeng Liu, Xuguang Liu","doi":"10.1016/j.saa.2024.125590","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125590","url":null,"abstract":"<p><p>Propranolol, a medication used to treat cardiovascular diseases, can be harmful when overdosed and hazardous to ecosystems if released into the environment. Here, a new molecularly imprinted fluorescent sensor was developed from carbon dots through a sol-gel method. Carbon dots served as both the fluorescent signal and the carrier, with propranolol as the template molecule and 3-aminopropyltriethoxysilane as the functional monomer to be grafted on carbon dots' surface. A novel detection method was established for the efficient, rapid, and cost-effective detection of propranolol in human plasma through quantitative analysis by using a fluorescence spectrophotometer and an ultraviolet spectrophotometer. Under the optimal conditions, the detection range of 0.5-4 mg L<sup>-1</sup>, the detection limit of 0.092 mg L<sup>-1</sup>, the imprinting factor of 2.42, and the detection response time of 2 min were achieved. The prepared carbon dot-based molecularly imprinted fluorescent sensor was proved to have a wide accurate linear range, low detection limit, and very short response time, and can detect lower analyte concentrations with higher detection accuracy.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125590"},"PeriodicalIF":0.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biogenic synthesis of N-doped carbon dots from S. cumini seeds for prostate cancer biomarker citrate detection, its live cancer cell imaging.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-14 DOI: 10.1016/j.saa.2024.125568
Dongwei Zhu, Jindong Dai, Jue Jia, Thangamani Kanagaraj, Kanagaraj Rajalakshmi, Selvaraj Muthusamy, Lina Geng, Guoyue Yuan
{"title":"Biogenic synthesis of N-doped carbon dots from S. cumini seeds for prostate cancer biomarker citrate detection, its live cancer cell imaging.","authors":"Dongwei Zhu, Jindong Dai, Jue Jia, Thangamani Kanagaraj, Kanagaraj Rajalakshmi, Selvaraj Muthusamy, Lina Geng, Guoyue Yuan","doi":"10.1016/j.saa.2024.125568","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125568","url":null,"abstract":"<p><p>Citrate is a potential biomarker for early stage detection of prostate cancer (PC), its concentration significantly dropped to 2-20 mM in PC patients. Herein, a cheap, simple, and reliable citrate sensor was proposed based on the biogenic synthesis of nitrogen-doped carbon dots (N-CDs) derived from the biowaste of Syzygiumcumini (S. cumini) seeds. The prepared N-CDs were characterized by TEM, FT-IR and spectral studies. The average size of the N-CDs was found to be 2.4 nm, the presence of -OH and -NH<sub>2</sub> functional groups on the surface of N-CDs was confirmed by FT-IR analysis. The N-CDs possess the highest emission at 414 nm and cause quenching after reacting with citrate, which is due to the possible hydrogen bonding interactions between the probe and citrate. The probe expressed the lowest limit of detection of 3.5 nM, high selectivity, high interfering ability (1000-fold), provided a stable response at 5 min of reaction time, good biocompatibility, and delivered a contrast bioimage with different concentrations of citrate. The N-CDs were utilized to detect citrate in human urine samples, obtained good recovery results, and validated with the high-performance liquid chromatography method.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125568"},"PeriodicalIF":0.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Propargylic-linked [5]helicene derivative for selective Au3+ detection in near-perfect aqueous media with applications in diverse real samples, paper test strips, and human cells.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-14 DOI: 10.1016/j.saa.2024.125594
Nirawit Kaewnok, Nirumon Chailek, Sopida Thavornpradit, Sirilak Wangngae, Anuwut Petdum, Waraporn Panchan, Anyanee Kamkaew, Jitnapa Sirirak, Thanasat Sooksimuang, Natdhera Sanmanee, Phornphimon Maitarad, Nantanit Wanichacheva
{"title":"Propargylic-linked [5]helicene derivative for selective Au<sup>3+</sup> detection in near-perfect aqueous media with applications in diverse real samples, paper test strips, and human cells.","authors":"Nirawit Kaewnok, Nirumon Chailek, Sopida Thavornpradit, Sirilak Wangngae, Anuwut Petdum, Waraporn Panchan, Anyanee Kamkaew, Jitnapa Sirirak, Thanasat Sooksimuang, Natdhera Sanmanee, Phornphimon Maitarad, Nantanit Wanichacheva","doi":"10.1016/j.saa.2024.125594","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125594","url":null,"abstract":"<p><p>Gold is classified as a heavy metal, and its ion (Au<sup>3+</sup>) can manifest adverse impacts on ecological and human health. Thus, an effective method for Au<sup>3+</sup> detection is highly required. In this work, a new [5]helicene-based fluorescence sensor (M202P) was synthesized and applied for Au<sup>3+</sup> monitoring in near-perfect aqueous media. M202Prapidly detected Au<sup>3+</sup> through a fluorescence quenching response and furnished a large Stokes shift of 157 nm. The Au<sup>3+</sup> sensing ability of M202P allowed it to withstand interference from other metal ions, with a detection limit for Au<sup>3+</sup> of 8.0 ppb. The mechanism underlying its Au<sup>3+</sup> detection was the coordination of Au<sup>3+</sup> with the alkyne and carbonyl oxygen, leading to the later hydration of alkynyl moiety, as thoroughly proven by FTIR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, and HRMS, with the stoichiometric ratio of 1:1 according to Job's plot. In addition, M202P can be used for the quantitative analysis and qualitative fluorescence assay of Au<sup>3+</sup> levels in environmental waters and fertilizer solutions. This sensor also demonstrated high potential as a fluorescence tracking agent in human cells and was utilized in fabricating a paper test strip.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125594"},"PeriodicalIF":0.0,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deep ultraviolet Raman spectroscopic analysis of antihistamine drugs in oral fluid for forensic purposes.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-13 DOI: 10.1016/j.saa.2024.125595
Mohamed O Amin, Fatima Matroodi, Entesar Al-Hetlani, Barbara Rossi, Igor K Lednev
{"title":"Deep ultraviolet Raman spectroscopic analysis of antihistamine drugs in oral fluid for forensic purposes.","authors":"Mohamed O Amin, Fatima Matroodi, Entesar Al-Hetlani, Barbara Rossi, Igor K Lednev","doi":"10.1016/j.saa.2024.125595","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125595","url":null,"abstract":"<p><p>Owing to its inherent nondestructive nature, rapid analysis and simplicity, Raman spectroscopy has emerged as a promising tool for forensic analysis of different bodily fluids, particularly oral fluid (OF). Accurate drug identification and quantification are essential for understanding the circumstances surrounding a case, such as whether it involves an overdose fatality, substance abuse, or drug trafficking. This study aims to evaluate the potential of using deep ultraviolet Raman spectroscopy (DUVRS) to detect the antihistamine cetirizine (CTZ) in liquid and solid OF samples. The application of DUVRS facilitated CTZ detection in liquid OF samples with a limit of detection (LOD) of 50 µg/mL. Additionally, integrating multivariate statistical analysis with DUVRS enabled reliable differentiation between pure OF stains and those contaminated with CTZ, thereby demonstrating its high sensitivity for CTZ detection. Further method development is warranted, involving larger cohorts of donors, increased numbers of samples, and a broader range of drug types, to enhance the practicality of this approach for forensic applications.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125595"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel enhanced detection and resolution of a nonfluorescent mixture in plasma at nanogram levels using sustainable fluorescent carbon dots and advanced chemometric models.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Pub Date : 2024-12-12 DOI: 10.1016/j.saa.2024.125596
Hind A Abdullatif, Mohammed Abdelkawy, Shereen A Boltia, Nesma M Fahmy, Maha Kamal
{"title":"Novel enhanced detection and resolution of a nonfluorescent mixture in plasma at nanogram levels using sustainable fluorescent carbon dots and advanced chemometric models.","authors":"Hind A Abdullatif, Mohammed Abdelkawy, Shereen A Boltia, Nesma M Fahmy, Maha Kamal","doi":"10.1016/j.saa.2024.125596","DOIUrl":"https://doi.org/10.1016/j.saa.2024.125596","url":null,"abstract":"<p><p>For the first time, advanced chemometric models were utilized to determine florescence induced by carbon dots. In an endeavor to regulate anthelmintic drug usage by facilitating the determination of veterinary formulations in animals' biological fluids, a novel fluorometric-assisted chemometric method has been developed for detecting two nonfluorescent drugs, Ivermectin (IVR) and Clorsulon (CLR). The method relies on the linear quenching effect of the drugs on the fluorescence intensity of carbon dots (CDs) synthesized from natural sources. Despite the significant overlap, chemometric models such as partial least squares (PLS) and artificial neural networks (ANN), assisted by genetic algorithms (GA), successfully resolved the issue and achieved high-precision recovery of both drugs. The method demonstrates a linearity range of 50-6000 ng/mL, rendering it suitable for determining both drugs in biological animal fluids. To ensure practical application, the method was applied to veterinary formulations and spiked animal plasma, yielding satisfactory results. Finally, a comparison of the proposed method with official ones revealed no significant differences. According to principles of white analytical chemistry (WAC), the method also obeys sustainability rules. The method was therefore proven to be a novel, safe and applicable alternative approach for this formulation.</p>","PeriodicalId":94213,"journal":{"name":"Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy","volume":"329 ","pages":"125596"},"PeriodicalIF":0.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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