New 1,2,4-triazole-based azo-azomethine dyes. Part I: Synthesis, characterization and spectroscopic studies

Publication typeJournal Article
Publication date2012-02-01
scimago Q2
wos Q1
SJR0.664
CiteScore8.5
Impact factor4.6
ISSN13861425, 18733557
Spectroscopy
Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Abstract
New 1,2,4-triazole-based azo-azomethine dyes were synthesized via condensation of 3,5-diamino-1,2,4-triazole with azo-coupled o -vanillin precursors. The effect of time on color intensity and electronic absorption spectra of the dyes were studied. ► In this study four new 1,2,4-triazole-based azo-azomethine dyes have synthesized. ► The tautomerism equilibrium between azo and hydrazone forms in DMSO/EtOH solution was studied. ► The TG results indicate that the dyes are thermally stable. Four new 1,2,4-triazole-based azo-azomethine dyes were synthesized via condensation of 3,5-diamino-1,2,4-triazole with azo-coupled o -vanillin precursors. The prepared dyes were characterized by IR, UV–vis and 1 H NMR spectroscopic methods as well as elemental analyses. Thermal properties of the prepared dyes were examined by thermogravimetric analysis. Results indicated that the framework of the dyes was stable up to 225 °C. Also, the influence of various factors including time and mixed DMSO/EtOH solution on UV–vis spectra of the dyes were investigated.
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Khanmohammadi H., Erfantalab M. New 1,2,4-triazole-based azo-azomethine dyes. Part I: Synthesis, characterization and spectroscopic studies // Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2012. Vol. 86. pp. 39-43.
GOST all authors (up to 50) Copy
Khanmohammadi H., Erfantalab M. New 1,2,4-triazole-based azo-azomethine dyes. Part I: Synthesis, characterization and spectroscopic studies // Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2012. Vol. 86. pp. 39-43.
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RIS Copy
TY - JOUR
DO - 10.1016/j.saa.2011.09.053
UR - https://doi.org/10.1016/j.saa.2011.09.053
TI - New 1,2,4-triazole-based azo-azomethine dyes. Part I: Synthesis, characterization and spectroscopic studies
T2 - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
AU - Khanmohammadi, Hamid
AU - Erfantalab, Malihe
PY - 2012
DA - 2012/02/01
PB - Elsevier
SP - 39-43
VL - 86
PMID - 22100733
SN - 1386-1425
SN - 1873-3557
ER -
BibTex
Cite this
BibTex (up to 50 authors) Copy
@article{2012_Khanmohammadi,
author = {Hamid Khanmohammadi and Malihe Erfantalab},
title = {New 1,2,4-triazole-based azo-azomethine dyes. Part I: Synthesis, characterization and spectroscopic studies},
journal = {Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy},
year = {2012},
volume = {86},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016/j.saa.2011.09.053},
pages = {39--43},
doi = {10.1016/j.saa.2011.09.053}
}