%0 Journal Article %1 2022 %A Ziarani, Ghodsi Mohammadi %A Javadi, Fatemeh %A Mohajer, Fatemeh %A Anafcheh, Maryam %A Badiei, Alireza %A Ghasemi, Jahan B. %D 2022 %I Elsevier BV %J Materials Chemistry and Physics %K A DFT Fe3+ Fe3O4@SiO2@Si-Pr-NH-(CH2)2-NH2 and bispyrazole colorimetric derivative its myown new nitrophenyl sensor: study synthesis using %P 125285 %R 10.1016/j.matchemphys.2021.125285 %T A new Fe3$\mathplus$ colorimetric sensor: Nitrophenyl bispyrazole derivative synthesis using Fe3O4@SiO2@Si-Pr-NH-(CH2)2-NH2 and its DFT study %U https://doi.org/10.1016%2Fj.matchemphys.2021.125285 %V 275 %X The efficient synthesis of bispyrazole derivatives was reported in the presence of Fe3O4@SiO2@Si-Pr-NH-(CH2)2-NH2 as a nanomagnetic catalyst in solvent-free conditions. The UV–Vis spectroscopy study of 4,4'-((3-nitrophenyl)methylene)bis(3-methyl-1H-pyrazol-5-ol) derivative 6a was demonstrated that it could be used as a Fe3+ ion colorimetric chemosensor, which was shown an apparent color change from white to orange with high selectivity toward the addition of Fe3+ ion in CH3CN/H2O (1:9 v/v) as a solvent. The UV–Vis absorption was increased linearly, and its detection limit was calculated 2.19 × 10−6 M. The orientations of hydroxyl groups for 5-membered and 6-membered rings of the most stable configurations of the bispyrazoles cause generation of T-shaped conformations based on Independent Gradient Model (IGM) analysis, conformational stability of the considered complexes can be related to …

@article{2022, abstract = {The efficient synthesis of bispyrazole derivatives was reported in the presence of Fe3O4@SiO2@Si-Pr-NH-(CH2)2-NH2 as a nanomagnetic catalyst in solvent-free conditions. The UV–Vis spectroscopy study of 4,4'-((3-nitrophenyl)methylene)bis(3-methyl-1H-pyrazol-5-ol) derivative 6a was demonstrated that it could be used as a Fe3+ ion colorimetric chemosensor, which was shown an apparent color change from white to orange with high selectivity toward the addition of Fe3+ ion in CH3CN/H2O (1:9 v/v) as a solvent. The UV–Vis absorption was increased linearly, and its detection limit was calculated 2.19 × 10−6 M. The orientations of hydroxyl groups for 5-membered and 6-membered rings of the most stable configurations of the bispyrazoles cause generation of T-shaped conformations based on Independent Gradient Model (IGM) analysis, conformational stability of the considered complexes can be related to …}, added-at = {2021-11-10T18:48:28.000+0100}, author = {Ziarani, Ghodsi Mohammadi and Javadi, Fatemeh and Mohajer, Fatemeh and Anafcheh, Maryam and Badiei, Alireza and Ghasemi, Jahan B.}, biburl = {https://www.bibsonomy.org/bibtex/2187bcc07438ba850c06a300075f0f342/fatemehmohajer}, doi = {10.1016/j.matchemphys.2021.125285}, interhash = {323f29d853fe4584602a15283dc2827b}, intrahash = {187bcc07438ba850c06a300075f0f342}, journal = {Materials Chemistry and Physics}, keywords = {A DFT Fe3+ Fe3O4@SiO2@Si-Pr-NH-(CH2)2-NH2 and bispyrazole colorimetric derivative its myown new nitrophenyl sensor: study synthesis using}, month = jan, pages = 125285, publisher = {Elsevier {BV}}, timestamp = {2021-11-10T18:48:28.000+0100}, title = {A new Fe3$\mathplus$ colorimetric sensor: Nitrophenyl bispyrazole derivative synthesis using Fe3O4@{SiO}2@Si-Pr-{NH}-({CH}2)2-{NH}2 and its {DFT} study}, url = {https://doi.org/10.1016%2Fj.matchemphys.2021.125285}, volume = 275, year = 2022 }