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Azizi-Toupkanloo H, Karimi-Nazarabad M, Shakeri M, Eftekhari M. Photocatalytic mineralization of hard-degradable morphine by visible light-driven Ag@g-C 3N 4 nanostructures. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30941-30953. [PMID: 31452123 DOI: 10.1007/s11356-019-06274-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 08/16/2019] [Indexed: 05/17/2023]
Abstract
The entrance of some hard-degradable pharmaceutical contaminants can cause irreparable damage to humans and other organisms; therefore, removing these pollutants from water is one of the most important activities in water purification field. In this work, the mineralization of morphine was performed using photocatalytic degradation method. Graphitic carbon nitride (g-C3N4) nanosheets, due to their promising tunable characteristics, were chosen as visible-light-driven nanostructured heterogeneous photocatalyst. To enhance the photocatalytic activity, g-C3N4 was doped with Ag noble metal due to its surface plasmon resonance effect and acting as an electron sink. The photodegradation of morphine was evaluated under different pH values, the dosage of the photocatalyst, initial concentration of morphine, and Ag% loading under sunlight as green energy. The maximum efficiency was obtained in the very low concentration of Ag@g-C3N4 photocatalyst with the superior low value of 0.17 g L-1. Near complete mineralization of morphine was achieved by Ag@g-C3N4 with metal content percentage equal to 5 in 180 min and pH = 2. Also, using various active species scavengers, superoxide anion radical was identified as the main responsible species in the photocatalysis reaction of morphine degradation.
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Affiliation(s)
| | - Mahdi Karimi-Nazarabad
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
- Department of Chemistry, Faculty of Samen Hojaj, Mashhad Branch, Technical and Vocational University, Tehran, Iran.
| | - Mahbubeh Shakeri
- Department of Chemistry, University of Neyshabur, Neyshabur, 9319774446, Iran
| | - Mohammad Eftekhari
- Department of Chemistry, University of Neyshabur, Neyshabur, 9319774446, Iran
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Yu B, Ge M, Li P, Xie Q, Yang L. Development of surface-enhanced Raman spectroscopy application for determination of illicit drugs: Towards a practical sensor. Talanta 2018; 191:1-10. [PMID: 30262036 DOI: 10.1016/j.talanta.2018.08.032] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 07/17/2018] [Accepted: 08/11/2018] [Indexed: 11/18/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been widely applied to identify or detect illicit drugs, because of the ability for highly specific molecular fingerprint and independence of aqueous solutions impact. We summarize the progress in determination of illicit drugs using SERS, including trace illicit drugs, suspicious objects and drugs or their metabolites in real biological system (urine, saliva and so on). Even though SERS detection of illicit drugs in real samples still remains a huge challenge because of the complex unknown environment, the efficient sample separation and the improved hand-held Raman analyzer will provide the possibility to make SERS a practically analytical technique. Moreover, we put forward a prospective overview for future perspectives of SERS as a practical sensor for illicit drugs determination. Perhaps the review is not exhaustive, we expect to help researchers to understand the evolution and challenges in this field and further interest in promoting Raman and SERS as a practical analyzer for convenient and automated illicit drugs identification.
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Affiliation(s)
- Borong Yu
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China
| | - Meihong Ge
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China
| | - Pan Li
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China
| | - Qiwen Xie
- Institute of Forensic of Anhui Public Security Department, Hefei 230061, PR China.
| | - Liangbao Yang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China.
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Ahmadi M, Madrakian T, Afkhami A. Solid phase extraction of amoxicillin using dibenzo-18-crown-6 modified magnetic-multiwalled carbon nanotubes prior to its spectrophotometric determination. Talanta 2016; 148:122-8. [DOI: 10.1016/j.talanta.2015.10.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/19/2015] [Accepted: 10/20/2015] [Indexed: 01/12/2023]
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Single-molecular diodes based on opioid derivatives. J Mol Model 2015; 21:317. [PMID: 26613894 DOI: 10.1007/s00894-015-2860-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 11/08/2015] [Indexed: 10/22/2022]
Abstract
We propose an efficient single-molecule rectifier based on a derivative of opioid. Electron transport properties are investigated within the non-equilibrium Green's function formalism combined with density functional theory. The analysis of the current-voltage characteristics indicates obvious diode-like behavior. While heroin presents rectification coefficient R>1, indicating preferential electronic current from electron-donating to electron-withdrawing, 3 and 6-acetylmorphine and morphine exhibit contrary behavior, R<1. Our calculations indicate that the simple inclusion of acetyl groups modulate a range of devices, which varies from simple rectifying to resonant-tunneling diodes. In particular, the rectification rations for heroin diodes show microampere electron current with a maximum of rectification (R=9.1) at very low bias voltage of ∼0.6 V and (R=14.3)∼1.8 V with resistance varying between 0.4 and 1.5 M Ω. Once most of the current single-molecule diodes usually rectifies in nanoampere, are not stable over 1.0 V and present electrical resistance around 10 M. Molecular devices based on opioid derivatives are promising in molecular electronics.
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Debnath D, Roy S, Li BH, Lin CH, Misra TK. Synthesis, structure and study of azo-hydrazone tautomeric equilibrium of 1,3-dimethyl-5-(arylazo)-6-amino-uracil derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 140:185-197. [PMID: 25594208 DOI: 10.1016/j.saa.2014.12.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 06/04/2023]
Abstract
Azo dyes, 1,3-dimethyl-5-(arylazo)-6-aminouracil (aryl=-C6H5 (1), -p-CH3C6H4 (2), -p-ClC6H4 (3), -p-NO2C6H4 (4)) were prepared and characterized by UV-vis, FT-IR, 1H NMR, 13C NMR spectroscopic techniques and single crystal X-ray crystallographic analysis. In the light of spectroscopic analysis it evidences that of the tautomeric forms, the azo-enamine-keto (A) form is the predominant form in the solid state whereas in different solvents it is the hydrazone-imine-keto (B) form. The study also reveals that the hydrazone-imine-keto (B) form exists in an equilibrium mixture with its anionic form in various organic solvents. The solvatochromic and photophysical properties of the dyes in various solvents with different hydrogen bonding parameter were investigated. The dyes exhibit positive solvatochromic property on moving from polar protic to polar aprotic solvents. They are fluorescent active molecules and exhibit high intense fluorescent peak in some solvents like DMSO and DMF. It has been demonstrated that the anionic form of the hydrazone-imine form is responsible for the high intense fluorescent peak. In addition, the acid-base equilibrium in between neutral and anionic form of hydrazone-imine form in buffer solution of varying pH was investigated and evaluated the pKa values of the dyes by making the use of UV-vis spectroscopic methods. The determined acid dissociation constant (pKa) values increase according to the sequence of 2>1>3>4.
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Affiliation(s)
- Diptanu Debnath
- Department of Chemistry, National Institute of Technology, Agartala 799046, India
| | - Subhadip Roy
- Department of Chemistry, National Institute of Technology, Agartala 799046, India
| | - Bing-Han Li
- Department of Chemistry, Chung Yuan Christian University, Chung-Li 320, Taiwan
| | - Chia-Her Lin
- Department of Chemistry, Chung Yuan Christian University, Chung-Li 320, Taiwan
| | - Tarun Kumar Misra
- Department of Chemistry, National Institute of Technology, Agartala 799046, India.
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Cankař P, Popa I, Trávníček Z, Stýskala J, Hradil P, Slouka J. Synthesis of 1-Aminocodeine as a Synthon for Other Codeine Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Chen F, Yin G, Liao X, Yang Y, Huang Z, Gu J, Yao Y, Chen X, Gao H. Preparation, characterization and in vitro release properties of morphine-loaded PLLA-PEG-PLLA microparticles via solution enhanced dispersion by supercritical fluids. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1693-1705. [PMID: 23625317 DOI: 10.1007/s10856-013-4926-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 04/04/2013] [Indexed: 06/02/2023]
Abstract
Morphine-loaded poly(L-lactide)-poly(ethylene glycol)-poly(L-lactide) (PLLA-PEG-PLLA) microparticles were prepared using solution enhanced dispersion by supercritical CO2 (SEDS). The effects of process variables on the morphology, particles size, drug loading (DL), encapsulation efficiency and release properties of the microparticles were investigated. All particles showed spherical or ellipsoidal shape with the mean diameter of 2.04-5.73 μm. The highest DL of 17.92 % was obtained when the dosage ratio of morphine to PLLA-PEG-PLLA reached 1:5, and the encapsulation efficiency can be as high as 87.31 % under appropriate conditions. Morphine-loaded PLLA-PEG-PLLA microparticles displayed short-term release with burst release followed by sustained release within days or long-term release lasted for weeks. The degradation test of the particles showed that the degradation rate of PLLA-PEG-PLLA microparticles was faster than that of PLLA microparticles. The results collectively suggest that PLLA-PEG-PLLA can be a promising candidate polymer for the controlled release system.
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Affiliation(s)
- Fu Chen
- College of Materials Science and Engineering, Sichuan University, No.24, South 1st Section, 1st Ring Road, Chengdu, 610065, Sichuan, People's Republic of China
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Abdel Azeem S, Mohamed Attaf S, El-Shahat M. Acetylacetone phenylhydrazone functionalized polyurethane foam: Determination of copper, zinc and manganese in environmental samples and pharmaceutics using flame atomic absorption spectrometry. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2012.10.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zhang YZ, Liao XM, Yin GF, Yuan P, Huang ZB, Gu JW, Yao YD, Chen XC. Preparation of water soluble drugs-loaded microparticles using modified solution enhanced dispersion by supercritical CO2. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Mohammadi A, Yazdanbakhsh MR, Farahnak L. Synthesis and evaluation of changes induced by solvent and substituent in electronic absorption spectra of some azo disperse dyes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 89:238-242. [PMID: 22261112 DOI: 10.1016/j.saa.2011.12.062] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 12/18/2011] [Accepted: 12/21/2011] [Indexed: 05/31/2023]
Abstract
Five azo disperse dyes were prepared by diazotizing 4'-aminoacetophenone and p-anisidine and coupling with varies N-alkylated aromatic amines. Characterization of the dyes was carried out by using UV-vis, FTIR and 1H NMR spectroscopic techniques. The electronic absorption spectra of dyes are determined at room temperature in fifteen solvents with different polarities. The solvent dependent maximum absorption band shifts, were investigated using dielectric constant (ɛ), refractive index (n) and Kamlet-Taft polarity parameters (hydrogen bond donating ability (α), hydrogen bond accepting ability (β) and dipolarity/polarizability polarity scale (π*)). Acceptable agreement was found between the maximum absorption band of dyes and solvent polarity parameters especially with π*. The effect of substituents of coupler and/or diazo component on the color of dyes was investigated. The effects of acid and base on the visible absorption maxima of the dyes are also reported.
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Affiliation(s)
- Asadollah Mohammadi
- Department of Chemistry, Faculty of Sciences, University of Guilan, Rasht, Iran.
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Gómez-Vallejo V, Borrell JI, Llop J. A convenient synthesis of 13N-labelled azo compounds: a new route for the preparation of amyloid imaging PET probes. Eur J Med Chem 2010; 45:5318-23. [PMID: 20833450 DOI: 10.1016/j.ejmech.2010.08.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 08/19/2010] [Accepted: 08/25/2010] [Indexed: 11/16/2022]
Abstract
In the present paper, a fast and automated method for the synthesis of (13)N-labelled azo compounds is reported for the first time. The labelling strategy is based on trapping [(13)N]NO(2)(-) in an anion exchange resin. The reaction with primary aromatic amines in acidic media led to the formation of the corresponding diazonium salts, which were further reacted with aromatic amines and alcohols to yield the corresponding (13)N-labelled azo derivatives with good radiochemical conversion (40.0-58.3%). Good radiochemical yields (20.4-47.2%, decay corrected) and radiochemical purities (>99.9%) were obtained after purification by HPLC. Such methodology can be easily applied to the preparation of a wide range of (13)N-labelled azo derivatives by adequate selection of the non-radioactive precursors.
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Affiliation(s)
- Vanessa Gómez-Vallejo
- Radiochemistry Department, CIC biomaGUNE, Parque Tecnológico de San Sebastián, p° Miramón 182, 20009 San Sebastián, Spain
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Genady AR. Synthesis and characterization of novel color chemosensors based on azo dyes for possible application in opioid pharmacology. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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