1
|
De-scaling, experimental, DFT, and MD-simulation studies of unwanted growing plant as natural corrosion inhibitor for SS-410 in acid medium. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
2
|
Saxena A, Prasad D, Thakur KK, Kaur J. PDP, EIS, and Surface Studies of the Low-Carbon Steel by the Extract of Tinospora cordifolia: A Green Approach to the Corrosion Inhibition. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2020. [DOI: 10.1007/s13369-020-04894-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
3
|
Zhang JW, Tan L, Yuan JB, Qiao RF, Wang CZ, Yang FQ, Zhou LD, Zhang QH, Xia ZN, Yuan CS. Extraction of activated epimedium glycosides in vivo and in vitro by using bifunctional-monomer chitosan magnetic molecularly imprinted polymers and identification by UPLC-Q-TOF-MS. Talanta 2020; 219:121350. [PMID: 32887078 DOI: 10.1016/j.talanta.2020.121350] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/16/2020] [Accepted: 05/27/2020] [Indexed: 11/30/2022]
Abstract
In this work, efficient, sensitive bifunctional-monomer chitosan magnetic molecularly imprinted polymers (BCMMIPs) were fabricated and successfully applied to concentrate the metabolites of Epimedium flavonoids in rat testis and bone that were later analyzed using UPLC-Q-TOF-MS. Using chitosan and methacrylic acid as co-functional monomers, BCMMIPs exhibited a large adsorption capacity (7.60 mg/g), fast kinetics (60 min), and good selectivity. Chitosan is bio-compatible and non-toxic, and methacrylic acid provides multiple hydrogen bond donors. The BCMMIPs were injected into rat testis to specifically enrich the total flavonoid metabolites in vivo and were used to extract metabolites from bone in vitro. The results showed that the BCMMIPs coupled with UPLC-Q-TOF-MS successfully identified 28 compounds from testis and 18 compounds from bone, including 19 new compounds. This study provided a reliable protocol for the concentration of metabolites from complex biological samples, and several new metabolites of Epimedium flavonoids were found in vivo and in vitro.
Collapse
Affiliation(s)
- Jia-Wei Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China
| | - Ling Tan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China
| | - Jin-Bin Yuan
- Key Laboratory of Modern Chinese Medicine Preparations, Jiangxi University of Traditional Chinese Medicine, Jiangxi, 330000, China
| | - Ri-Fa Qiao
- Key Laboratory of Modern Chinese Medicine Preparations, Jiangxi University of Traditional Chinese Medicine, Jiangxi, 330000, China
| | - Chong-Zhi Wang
- Tang Center of Herbal Medicine and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China
| | - Lian-Di Zhou
- Basic Medical College, Chongqing Medical University, Chongqing, 400016, China.
| | - Qi-Hui Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China; Tang Center of Herbal Medicine and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA.
| | - Zhi-Ning Xia
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China
| | - Chun-Su Yuan
- Tang Center of Herbal Medicine and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA
| |
Collapse
|
4
|
Electrochemical Studies and the Surface Examination of Low Carbon Steel by Applying the Extract of Citrus sinensis. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s40735-020-00338-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
5
|
Mishra S, Kuo JL, Patwari GN. Hydrogen bond induced enhancement of Fermi resonances in N–H⋯N hydrogen bonded complexes of anilines. Phys Chem Chem Phys 2018; 20:21557-21566. [DOI: 10.1039/c8cp02448k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhancement of Fermi resonance intensities due to the formation of N–H⋯N hydrogen bonding of anilines with alkyl amines is analyzed using a two-state deperturbation model.
Collapse
Affiliation(s)
- Saurabh Mishra
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Jer-Lai Kuo
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
| | - G. Naresh Patwari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| |
Collapse
|
6
|
Yuan C, An P, Chen J, Luo Z, Yao J. Unraveling weak interactions in aniline-pyrrole dimer clusters. Sci China Chem 2016. [DOI: 10.1007/s11426-016-0105-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
8
|
Hu Y, Bernstein ER. Photoionization and Vibrational Spectroscopy of the Aniline−Methanol Clusters. J Phys Chem A 2009; 113:639-43. [DOI: 10.1021/jp807049e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yongjun Hu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, People’s Republic of China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
| | - Elliot R. Bernstein
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, People’s Republic of China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
| |
Collapse
|
9
|
Yamada Y, Okano JI, Mikami N, Ebata T. Picosecond IR-UV pump-probe spectroscopic study on the intramolecular vibrational energy redistribution of NH2 and CH stretching vibrations of jet-cooled aniline. J Chem Phys 2005; 123:124316. [PMID: 16392491 DOI: 10.1063/1.2039087] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Intramolecular vibrational energy redistribution (IVR) of the NH2 symmetric and asymmetric stretching vibrations of jet-cooled aniline has been investigated by picosecond time-resolved IR-UV pump-probe spectroscopy. A picosecond IR laser pulse excited the NH2 symmetric or asymmetric stretching vibration of aniline in the electronic ground state and the subsequent time evolutions of the excited level as well as redistributed levels were observed by a picosecond UV pulse. The IVR lifetimes for symmetric and asymmetric stretches were obtained to be 18 and 34 ps, respectively. In addition, we obtained the direct evidence that IVR proceeds via two-step bath states; that is, the NH2 stretch energy first flows into the doorway state and the energy is further dissipated into dense bath states. The rate constants of the second step were estimated to be comparable to or slower than those of the first step IVR. The relaxation behavior was compared with that of IVR of the OH stretching vibration of phenol [Y. Yamada, T. Ebata, M. Kayano, and M. Mikami J. Chem. Phys. 120, 7400 (2004)]. We found that the second step IVR process of aniline is much slower than that of phenol, suggesting a large difference of the "doorway state increasing the dense bath states" anharmonic coupling strength between the two molecules. We also observed IVR of the CH stretching vibrations, which showed much faster IVR behavior than that of the NH2 stretches. The fast relaxation is described by the interference effect, which is caused by the coherent excitation of the quasistationary states.
Collapse
Affiliation(s)
- Yuji Yamada
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | | | | | | |
Collapse
|