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Abdelshafi NA, Darwish HW, Alanazi AS, Naguib IA, Elkhouly HH, Khodary NS, Mohamed EH. Voltammetric analysis of pholcodine on graphene-modified GNPs/PTs with green assessment. BMC Chem 2024; 18:48. [PMID: 38449002 PMCID: PMC10919016 DOI: 10.1186/s13065-024-01146-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/19/2024] [Indexed: 03/08/2024] Open
Abstract
Pholcodine, an anti-tussive medication widely used as an over-the-counter, OTC drug, has recently faced restrictions in several countries. This paper presents a sensitive electrochemical approach for pholcodine detection. The electrochemical method involved fabricating a graphene nanoplatelets electrode, incorporating polythiophene nanospheres polymer to promote electron transfer and increase the activated surface area. Characterization of the fabricated electrode was performed using transmission electron microscopy, ATR-Fourier-transform infrared spectroscopy, X-ray crystallography, X-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy. The electrochemical behavior of pholcodine with the fabricated electrode was investigated using cyclic voltammetry, chronoamperometry, square wave voltammetry (SWV), and differential pulse voltammetry (DPV). The developed electrode led to a linear response for pholcodine ranging from 10 to 45 mg/L with detection limits of 1.41 and 1.51 mg/mL for SWV and DPV, respectively and quantification limits of 4.27 and 4.57 mg/L for SWV and DPV, respectively. The proposed method has accurately recovered pholcodine in spiked serum samples with a recovery percentage ranging from 1.2 to 2.9%. The optimized method is found to be accurate, precise, and robust by applying validation parameters provided by International Council for Harmonization. Two green metrics were computed to assess the method's greenness, the findings showed that the developed method is environmentally friendly with minimum sample preparation steps.
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Affiliation(s)
- Nahla A Abdelshafi
- Department of Pharmaceutical Analytical Chemistry, School of Pharmacy, Badr University in Cairo, Badr City, Cairo, 11829, Egypt.
| | - Hany W Darwish
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Ashwag S Alanazi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, 11671, Riyadh, Saudi Arabia
| | - Ibrahim A Naguib
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, 21944, Taif, Saudi Arabia
| | - Hadeer H Elkhouly
- School of Pharmacy, Badr University in Cairo, Badr City, Cairo, 11829, Egypt
| | - Nehal S Khodary
- School of Pharmacy, Badr University in Cairo, Badr City, Cairo, 11829, Egypt
| | - Ekram H Mohamed
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, The British University in Egypt, El Sherouk City, Cairo, 11837, Egypt
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de Jesus CG, da Rocha Rodrigues R, da Silva CAM, Péres LO. Artificial neural networks in the modeling of the catalytic activity of a biosensor composed of conjugated polymers and urease. Anal Bioanal Chem 2024; 416:1217-1227. [PMID: 38180497 DOI: 10.1007/s00216-023-05114-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/26/2023] [Accepted: 12/11/2023] [Indexed: 01/06/2024]
Abstract
Thin films of conjugated polymer and enzyme can be used to unravel the interaction between components in a biosensor. Using artificial neural networks (ANNs) improves data interpretability and helps construct models with great capacity for classifying and processing information. The present work used kinetic data from the catalytic activity of urease immobilized in different conjugated polymers to create ANN models using time, substrate concentration, and absorbance as input variables since the models had absorbance in a posterior instant as output value to explore the predictivity of the ANNs. The performance of the models was evaluated by Pearson's correlation coefficient (ρ) and mean squared error (MSE) values. After the learning process, a series of new experiments were performed to verify the generality of the models. As the main results, the best ANN model presented 0.9980 and 3.0736 × 10-5 for ρ and MSE, respectively. For the simulation step, intermediary values of substrate concentration were used. The mean absolute percentage error (MAPE) values were 3.34, 3.07, and 3.78 for 12 mM, 22 mM, and 32 mM concentrations, respectively. Overall, with the simulations, it was possible to ascertain the interpolatory capacity of the model, which has a learning mechanism based on absorbance and time as variables. Thus, the potential of ANNs would be in their use in pre-evaluations, helping to determine the substrate concentration at which there is higher catalytic activity or in determining the linear range of the sensor.
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Affiliation(s)
- Cléber Gomes de Jesus
- Laboratory of Hybrid Materials, Federal University of São Paulo, Diadema, SP, Brazil
| | | | | | - Laura Oliveira Péres
- Laboratory of Hybrid Materials, Federal University of São Paulo, Diadema, SP, Brazil.
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Li S, Wang J, Zhou M, Wang K, Jiang K. Methyl-Symmetrically Substituted Poly(3,4-Dimethylthiophene) as Cathode for Aluminum Ion Batteries. Chemistry 2024:e202303892. [PMID: 38279783 DOI: 10.1002/chem.202303892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/21/2024] [Accepted: 01/25/2024] [Indexed: 01/28/2024]
Abstract
The aggravation of energy problems and the scarcity of lithium resources have forced us to look for new energy storage systems. Aluminum ion batteries, as a promising energy storage system, has the advantages of environmental friendliness and abundant aluminum resources, and has the potential for application in large-scale energy storage and personal portable electronic devices. To solve the stability problem of aluminum ion batteries during cycling for large-scale energy storage needs, we report a polythiophene-based conductive polymer, poly(3,4-dimethylthiophene) (PDMT), as a high performance cathode material for aluminum ion batteries. By introducing two methyl groups on the thiophene ring, we successfully adjust the local charge density of the heterocyclic thiophene, thus changing the electron delocalization characteristics, and improving the electrochemical reaction activity of the polythiophene (PTH) material as a redox electrode material. This also maintains the symmetry and regularity of the polymer structure, giving the material better cycling stability. The discharge specific capacity reaches 110 mAh g-1 at a current density of 200 mA g-1, far exceeding conventional PTH cathodes (~ 70 mAh g-1), and the capacity retention rate is 92.7% after 1000 cycles. It also shows excellent rate performance due to the flexible structure of the conductive polymer.
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Affiliation(s)
- Sihang Li
- Huazhong University of Science and Technology, School of Materials Science and Engineering, CHINA
| | - Juan Wang
- Huazhong University of Science and Technology, School of Materials Science and Engineering, CHINA
| | - Min Zhou
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, CHINA
| | - Kangli Wang
- Huazhong University of Science and Technology, Luoyu Road, Wuhan, CHINA
| | - Kai Jiang
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, CHINA
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Riaz U, Farooq A, Alam J. Microwave-assisted rapid degradation of Methyl red dye using Polyfuran/ Polythiophene and its Co-oligomers as catalysts. Spectrochim Acta A Mol Biomol Spectrosc 2023; 302:123106. [PMID: 37441955 DOI: 10.1016/j.saa.2023.123106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/15/2023]
Abstract
The work reports for the first time microwave-assisted degradation of Methyl Red (MR) dye using polythiophene (PTh), polyfuran (PFu) and its co-oligomers. The co-oligomers were synthesized by sonication using varying mol ratios of PFu/PTh (80:20, 50:50 and 20:80). The polymers and its co-oligomers were analyzed for their spectral and morphological properties using FTIR, UV-visible and scanning electron microscopy (SEM) coupled with elemental mapping. The oligomers as well as pristine polymers were used as microwave active catalysts to degraded Methyl Red (MR) dye. The degradation was found to follow the pseudo-first-order model. Maximum degradation of 99% was achieved using PFu/PTh-50/50 as catalyst. Scavenging tests were also carried out to confirm the generation of radicals responsible for the effective degradation of the dye. The LCMS studies were used to explore the degraded fragments and a plausible mechanism was proposed to reveal the degradation pathway.
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Affiliation(s)
- Ufana Riaz
- Department of Chemistry and Biochemistry, North Carolina Central University, NC 27707, USA; Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
| | - Aaliyah Farooq
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Javed Alam
- College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
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Akman F. Effect of solvents on intra- and inter-molecular interactions of oligothiophenes. J Mol Model 2023; 29:276. [PMID: 37555864 DOI: 10.1007/s00894-023-05684-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/02/2023] [Indexed: 08/10/2023]
Abstract
CONTEXT Oligothiophenes have long been used as model compounds to understand the chemistry of polythiophenes. Herein, we have some quantum chemical calculations and intra- and inter-molecular interaction calculations of a series of oligothiophenes such as terthiophene, quintetthiophene, sevensthiophene, terthiophene-terthiophene, terthiophene-water, terthiophene-methanol, and terthiophene-chloroform performed by time-dependent density functional theory (TD-DFT), density functional theory (DFT), and Multiwfn: a multifunctional wavefunction analyzer. The UV-vis spectra, HOMO-LUMO energies, NBO analysis, MEP, molecular structures, and electronic properties were computed using DFT/TD-DFT at the level of B3LYP/6-31+ G (d,p) and described. The nature of molecular interactions between terthiophene and solvents like water, methanol, and chloroform were also investigated using non-covalent interaction index (NCI), reduced density gradient (RDG), localized orbital locator (LOL), and electron localization function (ELF) topological analyses. Besides, Fukui functions and energy of population density-of-states were computed using the same method. The calculation results show that there are some changes in the terthiophene with the addition of solvent to the medium. METHODS DFT calculations were performed using the Gaussian 09 software and GaussView 5.0 visulation program. Multiwfn software is used to calculate the reduced density gradient (RDG) scatterplots, non-covalent interactions (NCI), ELF, LOL, Fukui analysis, and energy of population density-of-states of oligothiophenes.
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Affiliation(s)
- Feride Akman
- Vocational School of Food, Agriculture and Livestock, University of Bingöl, 12000, Bingöl, Turkey.
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Zhang J, Wu Y, Liu M, Huang L, Li Y, Wu Y. Self-Adaptive Re-Organization Enables Polythiophene as an Extraordinary Cathode Material for Aluminum-Ion Batteries with a Cycle Life of 100 000 Cycles. Angew Chem Int Ed Engl 2023; 62:e202215408. [PMID: 36515631 DOI: 10.1002/anie.202215408] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/15/2022]
Abstract
Aluminum-ion batteries (AIBs) have attracted great attentions in recent years. Organic materials such as polythiophene (PT) are promising cathode for AIBs. However, the capacity and cyclic stability of conventional organic cathode such as PT are limited by the inadequate degree of reaction and the unstable nature of organic materials. To obtain high-performance organic cathode, a new PT with the ability of self-adaptive re-organization was prepared. During cycling, its molecular chain can be re-organized, and the polymerization mode will change from Cα -Cα (α-PT) to Cβ -Cβ (β-PT). This change leads to smaller steric hindrance and faster kinetics during ion insertion which can lower the reaction energy barrier and stabilize the molecular structure. Benefited by this, AIBs with this cathode can deliver a specific capacity of 180 mAh g-1 (@2 A g-1 ) and a superb stability of 100 000 cycles at 10 A g-1 . High energy density and power density can also be achieved with this cathode.
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Affiliation(s)
- Junfei Zhang
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Yunling Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China.,Jiangsu Key Laboratory for Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, China
| | - Miao Liu
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Lu Huang
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Yanguang Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China.,Jiangsu Key Laboratory for Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, China
| | - Yingpeng Wu
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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Garg S, Goel N. Photodegradation of dye using Polythiophene/ZnO nanocomposite: A computational approach. J Mol Graph Model 2022; 117:108285. [PMID: 35964365 DOI: 10.1016/j.jmgm.2022.108285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 01/14/2023]
Abstract
Incorporating nanostructured photocatalysts in polymers is a strategic way to obtain novel water purification systems. Here, we present density functional theory (DFT) study of Polythiophene/Zinc oxide (PTh/ZnO) nanocomposite with high photocatalytic performance and stability which exhibits superior degradation of alizarine dye under the visible light condition with interaction energy of -149.55 kcal/mol between conducting polymer (PTh) and metal oxide, with PTh sponsoring more number of electrons to the conduction band of ZnO. The electrical and optical properties of optimized geometries of PTh/ZnO nanocomposite were studied by frontier molecular orbital analysis, natural bond orbital (NBO) charge simulation, natural electronic configuration, and UV-vis absorption spectra. The modulation of the energy band gap (∽ 2.60 eV) and exciton binding energy (∽ 0.36 eV) causes visible light absorption and hence enhances the photodegradation activity of PTh/ZnO. NBO analysis evidences the electron accepting behavior of ZnO in the composites as it withdraws electron cloud density of about 0.14e from the polymer unit.
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Affiliation(s)
- Shivangi Garg
- Computational and Theoretical Chemistry Group, Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, Chandigarh, India
| | - Neetu Goel
- Computational and Theoretical Chemistry Group, Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, Chandigarh, India.
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Abstract
Prion diseases, also known as transmissible spongiform encephalopathies, are caused by the accumulation of abnormal isoforms of the prion protein (scrapie isoform of the prion protein, PrPSc) in the central nervous system. Many compounds with anti-prion activities have been found using in silico screening, in vitro models, persistently prion-infected cell models, and prion-infected rodent models. Some of these compounds include several types of polymers. Although the inhibition or removal of PrPSc production is the main target of therapy, the unique features of prions, namely protein aggregation and assembly accompanied by steric structural transformation, may require different strategies for the development of anti-prion drugs than those for conventional therapeutics targeting enzyme inhibition, agonist ligands, or modulation of signaling. In this paper, we first overview the history of the application of polymers to prion disease research. Next, we describe the characteristics of each type of polymer with anti-prion activity. Finally, we discuss the common features of these polymers. Although drug delivery of these polymers to the brain is a challenge, they are useful not only as leads for therapeutic drugs but also as tools to explore the structure of PrPSc and are indispensable for prion disease research.
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Affiliation(s)
- Kenta Teruya
- Department of Neurochemistry, Tohoku University Graduate School of Medicine, Seiryo-cho, Aoba-ku, Sendai, 980-8575, Japan
| | - Katsumi Doh-Ura
- Department of Neurochemistry, Tohoku University Graduate School of Medicine, Seiryo-cho, Aoba-ku, Sendai, 980-8575, Japan.
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Vu Quoc T, Do Ba D, Tran Thi Thuy D, Nguyen Ngoc L, Nguyen Thuy C, Vu Thi H, Khanh LD, Doan Thi Yen O, Thai H, Long VC, Talu S, Nguyen Trong D. DFT study on some polythiophenes containing benzo[ d]thiazole and benzo[ d]oxazole: structure and band gap. Des Monomers Polym 2021; 24:274-284. [PMID: 34512118 PMCID: PMC8425698 DOI: 10.1080/15685551.2021.1971376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/18/2021] [Indexed: 02/07/2023] Open
Abstract
The content of this paper focuses/shed light on the effects of X (X = S in P1 and X = O in P2) in C11H7NSX and R (R = H in P3, R = OCH3 in P4, and R = Cl in P5) in C18H9ON2S2-R on structural features and band gaps of the polythiophenes containing benzo[d]thiazole and benzo[d]oxazole by the Density Function Theory (DFT) method/calculation. The structural features including the electronic structure lattice constant (a), shape, total energy (Etot) per cell, and link length (r), are measured via band gap (Eg) prediction with the package of country density (PDOS) and total country density (DOS) of material studio software. The results obtained showed that the link angle and the link length between atoms were not changed significantly while the Etot was decreased from Etot = - 1904 eV (in P1) to Etot = - 2548 eV (in P2) when replacing O with S; and the Etot of P3 was decreased from Etot = - 3348 eV (in P3) when replacing OCH3, Cl on H of P3 corresponding to Etot = - 3575 eV (P4), - 4264 eV (P5). Similarly, when replacing O in P1 with - S to form P2, the Eg of P1 was dropped from Eg = 0.621 eV to Eg = 0.239 eV for P2. The Eg of P3, P4, and P5 is Eg = 0.006 eV, 0.064 eV, and 0.0645 eV, respectively. When a benzo[d]thiazole was added in P1 (changing into P3), the Eg was extremely strongly decreased, nearly 100 times (from Eg = 0.621 eV to Eg = 0.006 eV). The obtained results serve as a basis for future experimental work and used to fabricate smart electronic device.
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Affiliation(s)
- Trung Vu Quoc
- Faculty of Chemistry, Hanoi National University of Education, Cau Giay, Hanoi
| | - Dai Do Ba
- Nguyen Trai High School, Ba Dinh, Hanoi, Vietnam
| | | | - Linh Nguyen Ngoc
- Faculty of Training Bachelor of Practice, Thanh Do University, Kim Chung, Hoai Duc, Hanoi Vietnam
| | - Chinh Nguyen Thuy
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
| | - Huong Vu Thi
- Faculty of Chemistry, Hanoi National University of Education, Cau Giay, Hanoi
| | - Linh Duong Khanh
- Faculty of Chemistry, Hanoi National University of Education, Cau Giay, Hanoi
| | - Oanh Doan Thi Yen
- Publishing House for Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
| | - Hoang Thai
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
| | - Van Cao Long
- Institute of Physics, University of Zielona Góra, Zielona Góra, Poland
| | - Stefan Talu
- Technical University of Cluj-Napoca, The Directorate of Research, Development and Innovation Management (DMCDI), Cluj county, Romania
| | - Dung Nguyen Trong
- Institute of Physics, University of Zielona Góra, Zielona Góra, Poland
- Faculty of Physics, Hanoi National University of Education, Cau Giay, Hanoi, Vietnam
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Sirohi A, SanthiBhushan B, Srivastava A. Charge transport in polythiophene molecular device: DFT analysis. J Mol Model 2021; 27:77. [PMID: 33559091 DOI: 10.1007/s00894-021-04680-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 01/17/2021] [Indexed: 11/29/2022]
Abstract
We report the charge transport phenomenon in polythiophene molecular device and the ways of controlling the nature of charge transport through the device. By using density functional theory (DFT) and non-equilibrium Green's function (NEGF) formalisms, two ways of controlling the nature of charge transport have successfully been demonstrated by introducing conformational changes in the channel and applying external gate potential. Functional groups with negative mesomeric effect such as nitrous and carboxyl and positive mesomeric effect such as amino have been used as substituents as part of introducing conformational changes in the channel. The results indicate that the nature of charge transport in polythiophene molecular device can be changed from hole dominant to electron dominant and vice versa just by introducing minor conformational changes in the channel and by changing the polarity of external gate potential. Moreover, the negative differential resistance (NDR) behavior has been observed in amino-substituted thiophene device. These findings will be very useful in understanding the design of both p and n-type transistors out of same molecule for the next-generation molecular electronics.
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Affiliation(s)
- Ankit Sirohi
- Department of Electrical Engineering, Indian Institute of Technology, Bihta, Patna, Bihar, 801103, India
| | - Boddepalli SanthiBhushan
- Department of Electronics and Communication Engineering, Indian Institute of Information Technology, Kottayam, 686635, India
| | - Anurag Srivastava
- Advanced Material Research Group, CNT Lab, Atal Bihari Vajpayee-Indian Institute of Information Technology and Management, Gwalior, 474015, India.
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Kıbrıs E, Barbak NN, Irmak NE. CHARMM force field generation for a cationic thiophene oligomer with ffTK. J Mol Model 2021; 27:34. [PMID: 33420831 DOI: 10.1007/s00894-020-04610-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 11/16/2020] [Indexed: 10/22/2022]
Abstract
In the present work, CHARMM force field parameters are generated for a cationic oligomer of N, N, N-trimethyl-3-(4-methylthiophen-3-yl) oxy) propan-1-aminium) which has the potential for sensing biological molecules such as nucleic acids, nucleobases. We have used ffTK (force field tool kit) to obtain potential parameters. MD simulations are performed for 20-mer and its complexes with AMP and ATP. The simulation results are analyzed to see the number of phosphates in adenosine nucleotides effects on the structure of the backbone of oligomer. The UV-VIS calculations for the conformers which possess the most probable radius of gyration are carried out and compared to the experimental ones to validate the generated force field. Graphical Abstract Recent studies have shown that, biologically important anions (ATP, AMP, vb.) change the spectroscopic properties of cationic polythiophenes (CPT) in the solutions. This work aims to generate CHARMM compatible force field parameters for a CPT to explain experimental studies. The type of interactions will be investigated deeply to lead new biosensor studies by examining the formation and the structure of complexes that consist of a oligothiophene and biological molecules, ATP, AMP by molecular dynamic simulations.
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Affiliation(s)
- Erman Kıbrıs
- Faculty of Science, Department of Chemistry, İzmir Institute of Technology, 35430, Urla, Izmir, Turkey
| | - Nehir Nalıncı Barbak
- Faculty of Science, Department of Chemistry, İzmir Institute of Technology, 35430, Urla, Izmir, Turkey
| | - Nuran Elmacı Irmak
- Faculty of Science, Department of Chemistry, İzmir Institute of Technology, 35430, Urla, Izmir, Turkey.
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Zhang J, Zhang B, Dang X, Song Z, Hu Y, Chen H. A polythiophene/UiO-66 composite coating for extraction of volatile organic compounds migrated from ion-exchange resins prior to their determination by gas chromatography. J Chromatogr A 2020; 1633:461627. [PMID: 33128970 DOI: 10.1016/j.chroma.2020.461627] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 02/07/2023]
Abstract
A Poly (3,4-ethylenedioxothiophene) (PEDOT)/UiO-66 composite was electrodeposited on an etched stainless-steel wire as head-space solid-phase microextraction (HS-SPME) coating. A robust, well controlled thickness, and uniform coating of metal organic framework composites can be realized by the electrodeposited strategy. The incorporated UiO-66 not only enhanced the uniformity and stability of the composite coating, but also effectively decreased the stacking phenomenon of PEDOT and improved its extraction efficiency, which was over 100 times higher than that of the PEDOT coating without UiO-66. The composite coating was used to enrich seven types of volatile organic compounds (VOCs) in ion-exchange resins, including methyl cyclohexane, benzene, toluene, ortho-xylene, styrene, para-xylene and divinyl-benzene. The results of adsorption isotherm analysis showed that π stacking effect played dominant role between the composite coating and VOCs in the extraction process. The composite coating was characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared and thermogravimetric analysis, respectively. A determination method for seven kinds of VOCs was established by HS-SPME coupled with gas chromatography-flame ionization detection (GC-FID). Under the optimal experimental conditions, the detection linear range (LRs) was 0.09-100 ng mL-1, and the detection limit (LODs) was 0.03-0.06 ng mL-1 (S/N = 3). The method was applied for the migration detection of VOCs in four types of ion-exchange resin, which showed satisfactory recovery (84.5-117.2%).
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Affiliation(s)
- Jiayang Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
| | - Birong Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
| | - Xueping Dang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China.
| | - Zhiyong Song
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
| | - Yuling Hu
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Huaixia Chen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
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13
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Ashraf A, Farooq U, Farooqi BA, Ayub K. Electronic structure of polythiophene gas sensors for chlorinated analytes. J Mol Model 2020; 26:44. [PMID: 32009185 DOI: 10.1007/s00894-020-4287-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 01/10/2020] [Indexed: 10/25/2022]
Abstract
Density functional theory studies are performed to investigate the response of polythiophene as a sensor for chlorinated gaseous analytes. Interaction of polythiophene with these analytes is studied from both H-side (dipole-dipole) and Cl-side (halogen bonding) of analyte to get the most stable interaction site. Inferences from interaction energy, natural bond orbital, and Mulliken charge analyses are in line with those from geometric analysis. Interaction energies reveal that polythiophene has specificity and selectivity towards chlorine. Interestingly, the halogen bond in PT-Cl2 complexes is stronger than ion-dipole bond in the complexes of polythiophene with other analytes. The sensing of polythiophene towards these analytes is also measured by perturbing the electronic properties including ionization potential, electron affinity, λmax, and H→L gap. The spectroscopic properties (UV absorption spectra) reveal the interaction behavior of polythiophene with these chlorinated analytes. All these parameters including orbital analysis and H→L energies indicate high sensitivity of polythiophene for chlorine. Graphical abstractInteraction of chlorinated gaseous analytes with polythiophene surface.
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Akbarzadeh P, Koukabi N, Kolvari E. Polythiophene-functionalized magnetic carbon nanotube-supported copper(I) complex: a novel and retrievable heterogeneous catalyst for the "Phosphine- and Palladium-Free" Suzuki-Miyaura cross-coupling reaction. Mol Divers 2019; 24:1125-1137. [PMID: 31758294 DOI: 10.1007/s11030-019-10016-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/07/2019] [Indexed: 01/06/2023]
Abstract
A simple preparation of catalysts with high catalytic activity and superior cycling stability is very desirable. In this contribution, magnetic carbon nanotube functionalized by polythiophene (CNT-Fe3O4-PTh) acts as an efficient and retrievable host for copper nanoparticles to prepare CNT-Fe3O4-PTh-Cu(I) as a nontoxic and inexpensive catalyst. FT-IR, TGA, EDX, VSM, XRD, FE-SEM, TEM, and AAS techniques were employed to characterize the structure of the synthesized magnetic heterogeneous nanocomposite. Thereafter, the catalytic application of the catalyst was evaluated for the phosphine- and palladium-free Suzuki-Miyaura cross-coupling reaction in water/ethanol as a green media in short reaction times with good to excellent yields. Various derivatives of biaryl compounds were synthesized by reaction of aryl halides and phenylboronic acid. Simple methodology and easy workup, short reaction times, elimination of volatile and toxic solvents, biocompatible reaction conditions, and high yields are some advantages of this protocol. Moreover, the catalyst showed a good reusability owing to its magnetic properties and was recycled several times without appreciable decrease in its catalytic efficiency. Copper(I) nanoparticles supported on magnetic carbon nanotube functionalized by polythiophene (CNT-Fe3O4-PTh-Cu(I)), was prepared and used for ligand- and palladiumfree Suzuki-Miyaura cross-coupling reaction in water/ethanol as a green media in short reaction times with good to excellent yields. Reusability and stability tests demonstrated that the as prepared catalyst can be recycled with a negligible loss of its activity.
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Affiliation(s)
- Parisa Akbarzadeh
- Department of Chemistry, Semnan University, Semnan, 35131-19111, Iran
| | - Nadiya Koukabi
- Department of Chemistry, Semnan University, Semnan, 35131-19111, Iran.
| | - Eskandar Kolvari
- Department of Chemistry, Semnan University, Semnan, 35131-19111, Iran
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15
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Slusna L, Haizer L, Jane E, Bondarev D, Szocs V, Drzik M, Noskovicova E, Lorenc D, Velic D. Linear and Multi-Photon Fluorescence of Thiophene Based Copolymer with Electron-Accepting Side Chains. J Fluoresc 2018; 28:1333-1340. [PMID: 30218295 DOI: 10.1007/s10895-018-2295-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/03/2018] [Indexed: 11/29/2022]
Abstract
A novel copolymer poly(thiophene-2,5-diyl-2,5-di-n-octyloxycarbonyl-1,4-phenylene), denoted as P33, is introduced as potential material for photovoltaics, polymer light-emitting diodes, and/or organic transistors. P33 dissolved in chloroform is investigated by steady-state absorption, linear/non-linear fluorescence spectroscopies and time-resolved fluorescence spectroscopy. Molar extinction coefficient, fluorescence quantum yield, and singlet fluorescence lifetime of P33 are determined to be 18,315 M-1 cm-1, 0.4, and 810 ps, respectively. The P33 fluorescence fast components of decay times are 1.2 ps, 2.0 ps, and 0.5 ps for increasing wavelengths of 480 nm, 500 nm, and 520 nm, respectively. The fast component is attributed to a transport of nearly instantaneously formed excitons to localized states known as downhill energy transfer. Additionally multi-photon excited fluorescence is observed for pumping with wavelengths of 800 nm and 1200 nm. Two-photon absorption cross-section is determined to be 6.9 GM. These spectroscopic studies provide basic fluorescence characteristics of the novel thiophene copolymer P33.
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Affiliation(s)
- Lenka Slusna
- Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Comenius University, Ilkovicova 6, 842 15, Bratislava 4, Slovakia.
| | - Ludovit Haizer
- International Laser Centre, Ilkovicova 3, 841 04, Bratislava 4, Slovakia
| | - Eduard Jane
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 845 38, Bratislava, Slovakia
| | - Dmitrij Bondarev
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41, Bratislava 45, Slovakia
| | - Vojtech Szocs
- International Laser Centre, Ilkovicova 3, 841 04, Bratislava 4, Slovakia
| | - Milan Drzik
- International Laser Centre, Ilkovicova 3, 841 04, Bratislava 4, Slovakia
| | - Eva Noskovicova
- Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Comenius University, Ilkovicova 6, 842 15, Bratislava 4, Slovakia
| | - Dusan Lorenc
- Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Comenius University, Ilkovicova 6, 842 15, Bratislava 4, Slovakia.,International Laser Centre, Ilkovicova 3, 841 04, Bratislava 4, Slovakia
| | - Dusan Velic
- Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Comenius University, Ilkovicova 6, 842 15, Bratislava 4, Slovakia.,International Laser Centre, Ilkovicova 3, 841 04, Bratislava 4, Slovakia
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16
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Liu C, Zhang Q, An N, Wang J, Zhao L, Lu Y. A new water-soluble polythiophene derivative as a probe for real-time monitoring adenosine 5'-triphosphatase activity in lysosome of living cells. Talanta 2018; 182:396-404. [PMID: 29501170 DOI: 10.1016/j.talanta.2018.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/16/2018] [Accepted: 02/04/2018] [Indexed: 12/27/2022]
Abstract
Detection of the adenosine 5'-triphosphatase (ATPase) activity in lysosome of living cells is of great importance for clinical diagnosis of many related diseases, including cancer. In this work, a new water-soluble polythiophene derivative named ZnPT bearing both quaternary ammonium salt groups and dipicolylamine-Zn2+ (DPA-Zn2+) complexes in its side chain, was designed and synthesized for this propose. The probe mainly localized to lysosome with good biocompatibility and membrane penetration. The real-time, continuous, direct, and label-free assays were achieved through a fluorescence "turn-on" mode by taking advantages of the reaction specificity of ATPase with ATP and the high binding selectivity of ZnPT toward ATP substrate over its hydrolysis product (ADP). This well designed strategy should provide a facile and effective way for investigating ATPase-relevant biological processes.
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Affiliation(s)
- Cui Liu
- School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
| | - Qiang Zhang
- School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
| | - Nianqi An
- School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
| | - Jing Wang
- School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
| | - Linlin Zhao
- School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
| | - Yan Lu
- School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China.
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17
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Inagaki CS, Oliveira MM, Zarbin AJG. Direct and one-step synthesis of polythiophene/gold nanoparticles thin films through liquid/liquid interfacial polymerization. J Colloid Interface Sci 2018; 516:498-510. [PMID: 29408140 DOI: 10.1016/j.jcis.2018.01.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/18/2018] [Accepted: 01/20/2018] [Indexed: 10/18/2022]
Abstract
This work demonstrates a simple and one-step synthesis of polythiophene/gold nanoparticles (PT/Au) nanocomposite thin films, through a liquid-liquid (L/L) interfacial polymerization route. Starting from an aqueous solution of tetrachloroauric acid (acting both as metallic gold source and oxidizing agent to start the oxidative polymerization of thiophene), and a solution of thiophene in n-hexane, a biphasic L/L system was originated. In the following, the interface acted as a meeting-point for the reactants, and the polymerization reaction took place, leading to self-assembled PT/Au film between the two immiscible liquids. These films were easily deposited over different substrates (glass, silicon, plastics) and characterized through different techniques. The influence of both the reactants ratio and the reaction time on the structure and morphology of the films were evaluated. The films obtained with a shorter reaction time exhibited spherical gold nanoparticles (around 3 nm diameter) homogeneously dispersed into a polymeric matrix. The increase of both the reaction time and the thiophene/gold precursor ratio led to agglomerated and anisotropic gold structures wrapped by a thin layer of polythiophene. Overall, PT/Au films are transparent, homogeneous, stable, flexible and presented reversible electrochromic properties, which make them suitable for application in different systems and devices, as demonstrated here for electrochromic application.
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Affiliation(s)
- Camila Suemi Inagaki
- Department of Chemistry, Federal University of Paraná (UFPR), Centro Politécnico, CP 19081, CEP 81531-900, Curitiba, PR, Brazil.
| | - Marcela Mohallem Oliveira
- Department of Chemistry and Biology, Federal Technological University of Paraná (UTFPR), Curitiba, PR, Brazil.
| | - Aldo José Gorgatti Zarbin
- Department of Chemistry, Federal University of Paraná (UFPR), Centro Politécnico, CP 19081, CEP 81531-900, Curitiba, PR, Brazil.
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Braunger ML, Alessio P, Furini LN, Constantino CJL, Olivati CA. Influence of the Supramolecular Arrangement in the Electrical Conductivity of Poly(thiophene) Thin Films. J Nanosci Nanotechnol 2017; 17:460-466. [PMID: 29624317 DOI: 10.1166/jnn.2017.12667] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Thin films of regioregular polythiophene derivatives have had their optical, structural and morphological properties characterized, but there is still a lack of comparative studies to determine the effect from deposition techniques, especially on the electrical properties. In this study, we produced Langmuir-Schaefer and spin-coated films of regioregular alkyl-substituted polythiophene derivatives (P3AT) to investigate how distinct supramolecular arrangements can affect their properties. The Langmuir-Schaefer films deposited on indium-tin oxide substrates were observed to grow linearly with the number of layers, according to UV-visible absorption spectroscopy. Atomic force microscopy and Brewster angle microscopy were carried out for morphological characterization. From electrical transport measurements, the DC electrical conductivity of Langmuir-Schaefer films of P3AT was higher than the corresponding spin-coated films, which can be related to the dissimilar roughness and molecular-level organization provided by the Langmuir-Schaefer technique.
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19
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Shamsayei M, Yamini Y, Asiabi H. Polythiophene/graphene oxide nanostructured electrodeposited coating for on-line electrochemically controlled in-tube solid-phase microextraction. J Chromatogr A 2016; 1475:8-17. [PMID: 27836227 DOI: 10.1016/j.chroma.2016.11.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 12/27/2022]
Abstract
In this work, a novel polythiophene/graphene oxide (PTh/GO) nanostructured coating was introduced for on-line electrochemically-controlled in-tube solid phase microextraction of amitriptyline (AMI) and doxepin (DOX) as antidepressant drugs. The PTh/GO coating was prepared on the inner surface of a stainless steel tube by a facile in-situ electro-deposition method and it was used as a working electrode for electrochemically control in-tube solid phase microextraction. In the PTh/GO coating, GO acts as an anion dopant and sorbent. The PTh/GO coating, compared to PTh and GO coatings, exhibited enhanced long lifetime, good mechanical stability and a large specific surface area. Regarding the in-tube SPME, some important factors such as the extraction and desorption voltage, extraction and desorption times and flow rates of the sample solution and eluent, which could affect the extraction and separation efficiency of the analytes, were optimized. Total analysis time of this method including the online extraction and desorption time was about 21min for each sample. AMI and DOX were extracted, separated and determined with limits of detection as small as 0.3μgL-1 and 0.5μgL-1, respectively. This method showed good linearity in the range of 0.7-200μgL-1, 2.3-200μgL-1 and 2.9-200μgL-1 for AMI, and in the range 0.9-200μgL-1, 2.5-200μgL-1 and 3.0-200μgL-1 for DOX in water, urine and plasma samples, respectively; the coefficients of determination were also equal to or higher than 0.9976. The inter- and intra-assay precisions (RSD%, n=3) were in the range of 2.8-3.4% and 2.9-3.9% at the three concentration levels of 5, 25 and 50μgL-1, respectively. Finally, under the optimal conditions, the method was applied for the analysis of the drugs in human urine and plasma pretreated samples and good results were obtained.
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Wang C, Angelella M, Doyle SJ, Lytwak LA, Rossky PJ, Holliday BJ, Tauber MJ. Resonance Raman Spectroscopy of the T1 Triplet Excited State of Oligothiophenes. J Phys Chem Lett 2015; 6:3521-3527. [PMID: 26291623 DOI: 10.1021/acs.jpclett.5b01410] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The characterization of triplet excited states is essential for research on organic photovoltaics and singlet fission. We report resonance Raman spectra of two triplet oligothiophenes with n-alkyl substituents, a tetramer and hexamer. The spectra of the triplets are more complex than the ground state, and we find that density functional theory calculations are a useful starting point for characterizing the bands. The spectra of triplet tetrathiophene and hexathiophene differ significantly from one another. This observation is consistent with a T1 excitation that is delocalized over at least five rings in long oligomers. Bands in the 500-800 cm(-1) region are greatly diminished for an aggregated sample of hexathiophene, likely caused by fast electronic dephasing. These experiments highlight the potential of resonance Raman spectroscopy to unequivocally detect and characterize triplets in thiophene materials. The vibrational spectra can also serve as rigorous standards for evaluating computational methods for excited-state molecules.
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Affiliation(s)
- Chen Wang
- Department of Chemistry & Biochemistry, University of California at San Diego , La Jolla, California 92093, United States
| | - Maria Angelella
- Department of Chemistry & Biochemistry, University of California at San Diego , La Jolla, California 92093, United States
| | - Samantha J Doyle
- Department of Chemistry & Biochemistry, University of California at San Diego , La Jolla, California 92093, United States
| | - Lauren A Lytwak
- Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Peter J Rossky
- Department of Chemistry, Rice University , Houston, Texas 77251, United States
| | - Bradley J Holliday
- Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Michael J Tauber
- Department of Chemistry & Biochemistry, University of California at San Diego , La Jolla, California 92093, United States
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21
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Lan M, Liu W, Ge J, Wu J, Sun J, Zhang W, Wang P. A selective fluorescent and colorimetric dual-responses chemosensor for streptomycin based on polythiophene derivative. Spectrochim Acta A Mol Biomol Spectrosc 2015; 136 Pt B:871-874. [PMID: 25459610 DOI: 10.1016/j.saa.2014.09.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/23/2014] [Accepted: 09/24/2014] [Indexed: 06/04/2023]
Abstract
A colorimetric and fluorescent dual-responses chemosensor (PT3, a water-soluble polythiophene) for streptomycin was designed and synthesized. The structure of PT3 was characterized by using infrared spectroscopy, (1)H NMR and gel-permeation chromatography analyses. The conformational change of PT3 induced by streptomycin resulted in the red shift of absorption spectra and fluorescent quenching. Moreover, PT3 showed excellent selectivity for streptomycin over other antibiotics and biomolecules. PT3 could quantificationally detect streptomycin in the range of 2-70 μM with a detection limit of 0.2 μM (116 ppb), which is lower than the maximum residue limit defined by World Health Organization (200 ppb).
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Affiliation(s)
- Minhuan Lan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China; Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong Special Administrative Region
| | - Weimin Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
| | - Jiechao Ge
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Jiasheng Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Jiayu Sun
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Wenjun Zhang
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong Special Administrative Region
| | - Pengfei Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Ma G, Liang X, Li L, Qiao R, Jiang D, Ding Y, Chen H. Cu-doped zinc oxide and its polythiophene composites: preparation and antibacterial properties. Chemosphere 2014; 100:146-151. [PMID: 24342360 DOI: 10.1016/j.chemosphere.2013.11.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 11/23/2013] [Accepted: 11/23/2013] [Indexed: 06/03/2023]
Abstract
Cu-doped zinc oxide and its polythiophene nanocomposites were prepared by the Sol-Gel and in situ polymerization methods, respectively. The structures, morphologies and compositions of the samples were characterized. The antibacterial properties of the samples on three kinds of strains were determined by using powder inhibition zones, minimum inhibitory concentrations and minimal bactericidal concentrations. The study confirmed that the antibacterial activities of the composites were better than those of their each component. The antibacterial mechanisms of the samples were discussed further.
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Affiliation(s)
- Ge Ma
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China
| | - Xiaoxi Liang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China
| | - Liangchao Li
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China.
| | - Ru Qiao
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China
| | - Donghua Jiang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China
| | - Yan Ding
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China
| | - Haifeng Chen
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, Jinhua 321004, China
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