1
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A multi-channel rhodamine-pyrazole based chemosensor for sensing pH, Cu2+, CN– and Ba2+ and its function as a digital comparator. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Attia MS, Youssef AO, Abdel-Sattar NA, Amin MA, Alharthi S, Mohamed EH, Mahmoud SA, Abou-Omar MN. A highly selective and sensitive spectrofluorimetric method for the assessment of 3-nitrotyrosine in serum using (Eu(TTA) 3Phen) photo probe. RSC Adv 2022; 12:4536-4542. [PMID: 35425515 PMCID: PMC8981050 DOI: 10.1039/d1ra07351f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 01/22/2022] [Indexed: 11/21/2022] Open
Abstract
A simple, accurate and fast method was developed for the assessment of 3-nitrotyrosine as a biomarker for the early diagnosis of liver cirrhosis with minimal hepatic encephalopathy (MHE) using a (Eu(TTA)3Phen) photo probe. 3-Nitrotyrosine can remarkably quench the luminescence intensity of the (Eu(TTA)3Phen) complex in DMSO at pH = 9 and λem = 617 nm. The quenching of the luminescence intensity of (Eu(TTA)3Phen) complex particularly the electrical emission band at λem = 617 nm is used for the assessment of 3-nitrotyrosine in different serum samples of patients with liver cirrhosis. A simple, accurate and fast method was developed for the assessment of 3-nitrotyrosine as a biomarker for the early diagnosis of liver cirrhosis with minimal hepatic encephalopathy (MHE) using a (Eu(TTA)3Phen) photo probe.![]()
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Affiliation(s)
- Mohmed S Attia
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt
| | - Ahmed O Youssef
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt
| | - Nour A Abdel-Sattar
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt
| | - Mohammed A Amin
- Department of Chemistry, College of Science, Taif University P.O. Box 11099 Taif 21944 Saudi Arabia
| | - Sarah Alharthi
- Department of Chemistry, College of Science, Taif University P.O. Box 11099 Taif 21944 Saudi Arabia
| | - Ekram H Mohamed
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, The British University in Egypt El Sherouk City Cairo Egypt
| | - Safwat A Mahmoud
- Physics Department, Faculty of Science, Northern Border University Arar Saudi Arabia
| | - Mona N Abou-Omar
- Department of Chemistry, Faculty of Women for Arts, Science and Education, Ain Shams University Cairo Egypt
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3
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Low Molecular Weight Probe for Selective Sensing of PH and Cu 2+ Working as Three INHIBIT Based Digital Comparator. J Fluoresc 2022; 32:405-417. [PMID: 34988841 DOI: 10.1007/s10895-021-02856-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/22/2021] [Indexed: 10/19/2022]
Abstract
A novel simple molecular chemosensor 2 was synthesized and examined for pH, cations and anions detection. At pH values higher than 10, probe 2 switches on a green emission where the excited state intramolecular proton transfer (ESIPT) is ceased. Also, the probe absorption spectrum shows a clear pH dependence, and the probe aqueous solution (ethanol/water = 1:2, borate buffer) responds selectively and sensitively through its fluorescence spectrum to the presence of Cu2+. Job's plot gave a 2:1 stoichiometry of Probe-2/Cu2+ complex, which responds to the presence of S2- and H2PO4- in aqueous solution (ethanol/water = 1:2, borate buffer) by its absorption and fluorescence spectra. In addition, probe 2 mimics a digital comparator based on three INHIBIT logic gates by different outputs using HO- and H+ as inputs. Moreover, probe 2 also executes AND and NOT TRANSFER logic gates using Cu2+ and S2- as inputs.
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4
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Salem AR, El-Naggar AM, Mohamed EH, Amin MA, Attia MS. A novel cyanopyridine derived fluorescent sensor for selective determination of uranyl ions in different water samples. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08105-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Attia MS, Mahmoud SA, Ahmed AM, Amin TA, Youssef AO, Amin MA, Abou-Omar MN, Mohamed EH. Tb 3+-atorvastatin doped in poly(ethylene glycol) optical biosensor for selective determination of progesterone and testosterone in serum samples. RSC Adv 2021; 11:33326-33333. [PMID: 35497545 PMCID: PMC9042288 DOI: 10.1039/d1ra05860f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/27/2021] [Indexed: 11/21/2022] Open
Abstract
An innovative, simple and cost effective Tb3+-atorvastatin photo probe was designed and used as a core for a spectrofluorometric approach to sensitively determine two vital biological compounds in serum samples. Tb3+-atorvastatin complex displays a characteristic electrical band with λ em at 545 nm with significant luminescence intensity, which is quenched in the presence of progesterone and testosterone at two variant sets of pH; 6.2 and 7.5, respectively. The conditions were optimized and the best solvent for operation was found to be acetonitrile with λ ex at 320 nm. Progesterone and testosterone were assessed in serum samples using the same optimal conditions within concentration ranges of 2 × 10-9 to 2.9 × 10-6 and 3.1 × 10-9 to 4.8 × 10-6 mol L-1, respectively. The proposed luminescence method was validated in accordance to ICH guidelines and found to be accurate, precise and specific and free from any interference. The cost effectiveness and applicability of the method make it a good choice for routine analysis of the two compounds and early diagnosis of chronic diseases associated with abnormalities in their physiological levels.
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Affiliation(s)
- Mohamed S Attia
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt +202 1229867311 +202 1060819022
| | - Safwat A Mahmoud
- Physics Department, Faculty of Science, Northern Border University Arar Saudi Arabia
| | - Amal M Ahmed
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt +202 1229867311 +202 1060819022
| | - Tarek A Amin
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt +202 1229867311 +202 1060819022
| | - Ahmed O Youssef
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt +202 1229867311 +202 1060819022
| | - Mohammed A Amin
- Department of Chemistry, Collage of Science, Taif University P. O. Box 11099 Taif 21944 Saudi Arabia
| | - Mona N Abou-Omar
- Department of Chemistry, Faculty of Women for Arts, Science and Education, Ain Shams University Cairo Egypt
| | - Ekram H Mohamed
- Pharmaceutical Analytical, Chemistry Department, Faculty of Pharmacy, The British University in Egypt El Sherouk City Cairo 11837 Egypt
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6
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Alharthi S, Attia MS, Abou-Omar MN. pH assists simultaneous determination of folic acid and vitamin D 3 in biological fluids using a novel Tb 3+-acyclovir optical biosensor. RSC Adv 2021; 11:20865-20873. [PMID: 35479388 PMCID: PMC9034052 DOI: 10.1039/d1ra02396a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/15/2021] [Indexed: 12/13/2022] Open
Abstract
An innovative, simple and cost effective Tb3+-acyclovir photo probe was designed and used as a core for a spectrofluorometric approach to sensitively determine two vital biological compounds in different matrices. The Tb3+-acyclovir complex displays a characteristic electrical band with λ em at 545 nm with significant luminescence intensity, which is quenched in the presence of folic acid and vitamin D3 at pH 5.0 and 9.0, respectively. The conditions were optimized and the best solvent for operation was found to be acetonitrile and λ ex at 340 nm. folic acid was successfully estimated in tablet dosage form, urine and serum in the concentration range of 2.28 × 10-6 to 1.49 × 10-9 mol L-1. Vitamin D3 was also assessed in serum samples using the same optimal conditions within the concentration range of 3.2 × 10-9 to 1.0 × 10-6 mol L -1. The proposed luminescence method was validated in accordance with ICH guidelines and found to be accurate, precise and specific and free from any interferences. The cost effectiveness and applicability of the method make it a good choice for routine analysis of the two compounds and early diagnosis of chronic diseases associated with abnormalities in their physiological levels.
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Affiliation(s)
- Sarah Alharthi
- Department of Chemistry, Collage of Science, Taif University P. O. BOX 11099 Taif 21944 Saudi Arabia
| | - M S Attia
- Chemistry Department, Faculty of Science, Ain Shams University Cairo 11566 Egypt +202 1229867311 +202 1060819022
| | - M N Abou-Omar
- Department of Chemistry, Faculty of Women for Arts, Science and Education, Ain Shams University Cairo Egypt
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7
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Attia MS, Ahmed AM, Amin TA, Youssef AO, Amin MA, Mohamed EH, Mahmoud SA, Abou-Omar MN. New Tb 3+–simvastatin optical biosensor for sensitive determination of folic acid, progesterone, testosterone and vitamin D 3 in biological fluids. RSC Adv 2021; 11:32861-32872. [PMID: 35493587 PMCID: PMC9042109 DOI: 10.1039/d1ra05368j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/26/2021] [Indexed: 11/21/2022] Open
Abstract
An innovative, simple and cost effective Tb3+–simvastatin photo probe was designed and used as a core for a spectrofluorometric approach to sensitively determine four vital biological compounds in different matrices.
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Affiliation(s)
- Mohamed S. Attia
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Amal M. Ahmed
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Tarek A. Amin
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Ahmed. O. Youssef
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Mohammed A. Amin
- Department of Chemistry, Collage of Science, Taif University, P. O. BOX 11099, Taif 21944, Saudi Arabia
| | - Ekram H. Mohamed
- Pharmaceutical Analytical, Chemistry Department, Faculty of Pharmacy, The British University in Egypt, 11837, El Sherouk City, Egypt
| | - Safwat A. Mahmoud
- Physics Department, Faculty of Science, Northern Border University, Arar, Saudi Arabia
| | - Mona N. Abou-Omar
- Department of Chemistry, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
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8
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Garoub M, Hefny AH, Omer WE, Elsaady MM, Abo-Aly MM, Sayqal AA, Alharbi A, Hameed A, Alessa H, Youssef AO, Mohamed EH, Gouda AA, Sheikh RE, Abou-Omar MN, El-Kemary MA, Attia MS. Highly Selective Optical Sensor Eu (TTA) 3 Phen Embedded in Poly Methylmethacrylate for Assessment of Total Prostate Specific Antigen Tumor Marker in Male Serum Suffering Prostate Diseases. Front Chem 2020; 8:561052. [PMID: 33324607 PMCID: PMC7724366 DOI: 10.3389/fchem.2020.561052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/01/2020] [Indexed: 11/13/2022] Open
Abstract
A low-cost, simple, and highly selective method was used for the assessment of total prostate specific antigen (tPSA) in the serum of prostate cancer patients. This method is based on quenching the intensity of luminescence displayed by the optical sensor Eu (TTA)3 phen/poly methylmethacrylate (PMMA) thin membrane or film upon adding different concentrations of tPSA. The luminescent optical sensor was synthesized and characterized through absorption, emission, scanning electron microscopy (SEM), and x-ray diffraction (XRD), and is tailored to present red luminescence at 614 nm upon excitation at 395 nm in water. The fabricated sensor fluorescence intensity is quenched in the presence of tPSA in aqueous media. The fluorescence resonance energy transfer (FRET) is the main mechanism by which the sensor performs. The sensor was successfully utilized to estimate tPSA in the serum of patients suffering prostate cancer in a time and cost effective way. The statistical results of the method were satisfactory with 0.0469 ng mL-1 as a detection limit and 0.99 as a correlation coefficient.
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Affiliation(s)
- Mohannad Garoub
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - A H Hefny
- Occupational Health Department, Faculty of Public Health and Health Informatics, Umm AL Qura University, Makkah, Saudi Arabia
| | - W E Omer
- Institute of Nanoscience & Nanotechnology, Kafrelsheikh University, Kafr ElSheikh, Egypt
| | - Mostafa M Elsaady
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Mohamed M Abo-Aly
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ali A Sayqal
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ahmed Alharbi
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ahmed Hameed
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hussain Alessa
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - A O Youssef
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ekram H Mohamed
- Department of Analytical Chemistry, Faculty of Pharmacy, The British University in Egypt (BUE), Cairo, Egypt
| | - Ayman A Gouda
- Occupational Health Department, Faculty of Public Health and Health Informatics, Umm AL Qura University, Makkah, Saudi Arabia.,Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - R El Sheikh
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - M N Abou-Omar
- Department of Chemistry, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
| | - Maged A El-Kemary
- Institute of Nanoscience & Nanotechnology, Kafrelsheikh University, Kafr ElSheikh, Egypt
| | - M S Attia
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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9
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Syntheses, crystal structures, and solid-state photoluminescence properties of heterotrinuclear Zn2Ln (Ln: La, Sm, Eu, Tb) complexes derived from 1,4-diaminobutane-based N2O4 compartmental ligand. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Hashem SG, Elsaady MM, Afify HG, Omer WE, Youssef AO, El-Kemary M, Attia MS. Determination of uric acid in serum using an optical sensor based on binuclear Pd(II) 2-pyrazinecarboxamide-bipyridine doped in a sol gel matrix. Talanta 2019; 199:89-96. [PMID: 30952321 DOI: 10.1016/j.talanta.2019.02.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 02/10/2019] [Accepted: 02/12/2019] [Indexed: 01/23/2023]
Abstract
A new highly green luminescent binuclear palladium 2-pyrazinecarboxamide-bipyridine complex [Pd(pyc)(bpy)] was prepared and characterized. The binuclear Pd(pyc)(bpy) complex doped in sol-gel matrix has a strong luminescence intensity at 547 nm with λex = 330 nm in water The method depends on the quenching of the luminescence intensity of the binuclear Pd(pyc)(bpy) complex at 547 nm by different concentrations of uric acid. The remarkable quenching of the luminescence intensity of the binuclear Pd(pyc)(bpy) complex, doped in a sol-gel matrix, by uric acid was successfully used for the determination of uric acid in serum samples of patients with hypouricemia disease. The calibration plot was achieved over the concentration 3.9 × 10-9 to 1.2 × 10-4 mol L-1uric acid with a correlation coefficient of 0.9 and a detection limit of 1.8 × 10-10 mol L-1. The method was used satisfactorily for the assessment of the uric acid in a number of serum samples collected from various patients with Hypouricemia disease.
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Affiliation(s)
- S G Hashem
- Ain Shams University, Department of chemistry, Faculty of Science, Abbassia, 11566 Cairo, Egypt
| | - M M Elsaady
- Ain Shams University, Department of chemistry, Faculty of Science, Abbassia, 11566 Cairo, Egypt
| | - H G Afify
- Ain Shams University, Department of chemistry, Faculty of Science, Abbassia, 11566 Cairo, Egypt
| | - W E Omer
- Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, Egypt
| | - A O Youssef
- Ain Shams University, Department of chemistry, Faculty of Science, Abbassia, 11566 Cairo, Egypt
| | - Maged El-Kemary
- Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, Egypt
| | - M S Attia
- Ain Shams University, Department of chemistry, Faculty of Science, Abbassia, 11566 Cairo, Egypt.
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11
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Phthalocyanine-doped polystyrene fluorescent nanocomposite as a highly selective biosensor for quantitative determination of cancer antigen 125. Talanta 2019; 201:185-193. [PMID: 31122410 DOI: 10.1016/j.talanta.2019.03.119] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/28/2019] [Accepted: 03/30/2019] [Indexed: 11/22/2022]
Abstract
A novel, simple, sensitive, and precise spectrofluorometric assay of cancer antigen [CA 125] is described. This modality is based on monitoring the quenching of the luminescence intensity at 790 nm of the phthalocyanine fluorophore, in a nanocomposite comprising the fluorophore and cationic polystyrene, which results from interaction with CA 125. The remarkable quenching of the luminescence intensity of the Ni-phthalocyanine complex doped in PS matrix by various concentrations of CA 125 was successfully utilized as an optical sensor for the determination of CA 125 in different serum samples of ovarian disease. The performance of the designed biosensor is determined through monitoring the quenching of the luminescence intensity at 790 nm by cancer antigen 125 after excitation at 685 nm, pH 7.3 in water. The calibration plot was achieved over the concentration range 1.0 × 10-2 - 127 U mL-1 CA-125 with a correlation coefficient of 0.99 and detection limit of 1.0 × 10-4 U mL-1. The mechanism of the interaction between the nano thin film nickel(II)phthalocyanine and CA-125 was discussed. A significant correlation between the proposed method for the assessment of CA 125 and the standard method was applied to patients and controls.
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12
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The simplest molecular chemosensor for detecting higher pHs, Cu2+ and S2- in aqueous environment and executing various logic gates. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Attia M, Youssef A, Khan ZA, Abou-Omar M. Alpha fetoprotein assessment by using a nano optical sensor thin film binuclear Pt-2-aminobenzimidazole-Bipyridine for early diagnosis of liver cancer. Talanta 2018; 186:36-43. [DOI: 10.1016/j.talanta.2018.04.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 11/26/2022]
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14
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Bai XJ, Ren J, Zhou J, Song ZB. A ‘turn-on’ fluorescent chemosensor for the detection of Zn2+ ion based on 2-(quinolin-2-yl)quinazolin-4(3H)-one. HETEROCYCL COMMUN 2018. [DOI: 10.1515/hc-2017-0136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Abstract2-(Quinolin-2-yl)quinazolin-4(3H)-one (Q) was synthesized via the Brønsted acid-promoted tandem cyclization/dehydrogenation reaction with a good yield. Compound Q is a selective ‘turn-on’ fluorescent sensor for Zn2+ ion without interference by Cd2+. The 1:1 binding model of Q to Zn2+ was confirmed by the Benesi-Hildebrand analysis, Job’s plot analysis and a ultraviolet-visible (UV-Vis) titration experiment. Furthermore, the light-on fluorescent response can be observed by the naked eye under UV-lamp irradiation (365 nm).
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Affiliation(s)
- Xue-Jiao Bai
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jing Ren
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jia Zhou
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Zhi-Bin Song
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
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15
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Youssef AO. A highly selective and sensitive Tb 3+-acetylacetone photo probe for the assessment of acetazolamide in pharmaceutical and serum samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 195:47-52. [PMID: 29367026 DOI: 10.1016/j.saa.2018.01.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/06/2018] [Accepted: 01/14/2018] [Indexed: 06/07/2023]
Abstract
A novel, simple, sensitive and selective spectrofluorimetric method was developed for the determination of Acetazolamide in pharmaceutical tablets and serum samples using photo probe Tb3+-ACAC. The Acetazolamide can remarkably quench the luminescence intensity of Tb3+-ACAC complex in DMSO at pH 6.8 and λex = 350 nm. The quenching of luminescence intensity of Tb3+-ACAC complex especially the electrical band at λem = 545 nm is used for the assessment of Acetazolamide in the pharmaceutical tablet and serum samples. The dynamic range found for the determination of Acetazolamide concentration is 4.49 × 10-9-1.28 × 10-7 mol L-1, and the limit of detection (LOD) and limit of quantification (LOQ) are (4.0 × 10-9 and 1.21 × 10-8) mol L-1, respectively.
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Affiliation(s)
- A O Youssef
- Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt.
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16
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Nano-optical Biosensors for Assessment of Food Contaminants. SPRINGER SERIES ON POLYMER AND COMPOSITE MATERIALS 2018. [DOI: 10.1007/978-3-319-66417-0_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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17
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Tharwat MM, Attia MS, Alghamdi MS, Mahros AM. Ultra-Sensitive Nano Optical Sensor Samarium-Doxycycline Doped in Sol Gel Matrix for Assessment of Glucose Oxidase Activity in Diabetics Disease. J Fluoresc 2017; 27:1885-1895. [PMID: 28698946 DOI: 10.1007/s10895-017-2127-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 06/13/2017] [Indexed: 10/19/2022]
Abstract
A low cost and very sensitive method for the determination of the activity of glucose oxidase enzyme in different diabetics serum samples was developed. The method based on the assessment of the H2O2 concentration produced from the reaction of the glucose oxidase (GOx) enzyme with glucose as substrate in the serum of diabetics patients by nano optical sensor Sm-doxycycline doped in sol gel matrix. H2O2 enhances the luminescence intensity of all bands of the nano Sm-doxycycline complex [Sm-(DC)2]+ doped in sol-gel matrix, especially the 645 nm band at λex = 400 nm and pH 7.0 in water. The influence of the different analytical parameters that affect the luminescence intensity of the nano optical sensor, e.g. pH, H2O2 concentration and foreign ions concentrations were studied. The remarkable enhancement of the luminescence intensity of nano optical sensor [Sm-(DC)2]+ complex in water at 645 nm by the addition of various concentrations of H2O2 was successfully used as an optical sensor for the assessment of the activity of the glucose oxidase enzyme in different diabetics serum samples. The calibration plot was achieved over the activity range 0.1-240 U/L with a correlation coefficient of 0.999 and a detection limit of 0.05 U/L.
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Affiliation(s)
- Marwa M Tharwat
- Department of Electrical & Computer Engineering, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - M S Attia
- Chemistry Department, Faculty of Science, Ain Shams University, Abbssaia, Cairo, 11566, Egypt.
| | - M S Alghamdi
- Physics Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Amr M Mahros
- Physics Department, Faculty of Science, University of Jeddah, Jeddah, 21589, Saudi Arabia.,Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria, 21526, Egypt
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18
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Zhang Y, Wang X, Su Y, Chen D, Zhong W. A doxorubicin delivery system: Samarium/mesoporous bioactive glass/alginate composite microspheres. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:205-213. [DOI: 10.1016/j.msec.2016.05.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 05/04/2016] [Accepted: 05/05/2016] [Indexed: 11/27/2022]
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19
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Dimov SM, Georgiev NI, Asiri AM, Bojinov VB. Synthesis and sensor activity of a PET-based 1,8-naphthalimide Probe for Zn(2+) and pH determination. J Fluoresc 2014; 24:1621-8. [PMID: 25199470 DOI: 10.1007/s10895-014-1448-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 08/20/2014] [Indexed: 01/13/2023]
Abstract
A novel blue-emitting 1,8-naphthalimide fluorophore designed as a molecular PET-based probe for determination of pH and detection of transition metal ions in the environment was successfully synthesized. Novel compound was configured on the "fluorophore-spacer-receptor" format. Due to the tertiary amine receptor the novel system showed "off-on" switching properties under the transition from alkaline to acid media (FE = 3.2) and in the presence of Zn(2+) ions (FE = 2.5). The results obtained illustrate the high potential of the synthesized blue-emitting 1,8-naphthalimide fluorophore as an efficient pH chemosensing material and a selective probe for Zn(2+) ions.
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Affiliation(s)
- Stefan M Dimov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv, 1756, Sofia, Bulgaria
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