Possible interaction mechanism for quaternary ammonium (QA) ions binding to potassium channels: density functional theory and MP2 studies on the interaction between phenol and ammonium cation †

1999 ◽  
pp. 107-112 ◽  
Author(s):  
Xiao Jian Tan ◽  
Hua Liang Jiang ◽  
Wei Liang Zhu ◽  
Kai Xian Chen ◽  
Ru Yun Ji
Keyword(s):  
Density Functional Theory ◽  
Potassium Channels ◽  
Quaternary Ammonium ◽  
Density Functional ◽  
Interaction Mechanism ◽  
Ammonium Cation ◽  
Functional Theory

scholarly journals A novel selective fluorescent chemosensor for Fe3+ ions based on phthalonitrile dimer: synthesis, analysis, and theoretical studies

2020 ◽  
Vol 44 (5) ◽  
pp. 1254-1264
Author(s):  
Shaya AL-RAQA ◽  
İpek ÖMEROĞLU ◽  
Doğan ERBAHAR ◽  
Mahmut DURMUŞ
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Interaction Mechanism ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Density Functional Theory Calculations ◽  
Theoretical Studies ◽  
Functional Theory ◽  
Cross Coupling Reaction ◽  
Ft Ir

Phenyl-4,4-di(3,6-dibutoxyphthalonitrile) (3) was synthesized by the reaction of 1,4-phenylenebisboronic acid (1) and 4-bromo-3,6-dibutoxyphthalonitrile (2), using Suzuki cross-coupling reaction. The newly synthesized compound (3) was characterized by FT-IR, MALDI-MS, ESI-MS, 1H-NMR, 13C-NMR, and 13C-DEPT-135-NMR. The fluorescence property of phenyl-4,4-di(3,6- dibutoxyphthalonitrile) (3) towards various metal ions was investigated by fluorescence spectroscopy, and it was observed thatthe compound (3) displayed a significantly ‘turn-off’ response to Fe3+, which was referred to 1:2 complex formation between ligand (3) and Fe3+. The compound was also studied via density functional theory calculations revealing the interaction mechanism of the molecule with Fe3+ ions.

Atomically thin PdSeO3 nanosheets: a promising 2D photocatalyst produced by quaternary ammonium intercalation and exfoliation

2020 ◽  
Vol 56 (41) ◽  
pp. 5504-5507 ◽  
Author(s):  
Xiuming Zhang ◽  
Jia Liu ◽  
Erhuang Zhang ◽  
Rongrong Pan ◽  
Yuemei Li ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Water Splitting ◽  
Quaternary Ammonium ◽  
Density Functional ◽  
Two Dimensional ◽  
Functional Theory ◽  
Dft Computations ◽  
Overall Water Splitting

In 2018, the two-dimensional (2D) PdSeO3 monolayer was predicted to be a highly promising photocatalyst for direct overall water splitting in the light of density functional theory (DFT) computations.

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