New tetradentate Schiff base Cu(II) complexes: synthesis, physicochemical, chromotropism, fluorescence, thermal, and selective catalytic oxidation
Author | Salih, Kifah S.M. |
Author | Shraim, Amjad M. |
Author | Al-Mhini, Soaad R. |
Author | Al-Soufi, Ranim E. |
Author | Warad, Ismail |
Available date | 2022-01-30T06:18:02Z |
Publication Date | 2021-04-01 |
Publication Name | Emergent Materials |
Identifier | http://dx.doi.org/10.1007/s42247-021-00183-9 |
Citation | Salih, K.S.M., Shraim, A.M., Al-Mhini, S.R. et al. New tetradentate Schiff base Cu(II) complexes: synthesis, physicochemical, chromotropism, fluorescence, thermal, and selective catalytic oxidation. emergent mater. 4, 423-434 (2021). https://doi.org/10.1007/s42247-021-00183-9 |
ISSN | 25225731 |
Abstract | Three neutral Cu(II)/ƞ4-NNNO Schiff base complexes (1-3) were prepared from the (E)-4-nitro-2-(((2-(piperazin-1-yl)ethyl)imino)methyl)phenol, tetradentate Schiff base (SB) ligand, and the corresponding copper(II) salts. The new SB and its complexes were fully characterized by CHN-EA, standard spectroscopic, thermal, and fluorescence analyses. The formation of the complexes was monitored by EDX, FT-IR, and UV-Vis. The chromotropism studies of the complexes reflected remarkable findings, in which bathochromic solvato- and thermochromism shifts were detected. The turn-off-on halochromism phenomena were observed in the acidic and basic medium. On the other hand, the fluorescence of the free SB ligand was turned off via complexation to the Cu(II) center. In the presence of H2O2 as green oxidant and under mild oxidation catalytic condition, the three complexes successfully catalyzed the formation benzaldehyde from benzyl alcohol. |
Language | en |
Publisher | Springer |
Subject | Catalytic oxidation Chromotropism Cu(II) complexes Fluorescence Schiff base |
Type | Article |
Pagination | 423-434 |
Issue Number | 2 |
Volume Number | 4 |
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Chemistry & Earth Sciences [557 items ]