Acid-base behavior of an oligomer of 3-amino-1,2,4-triazole

We report the acid-base behavior of OATA, an oligomer synthesized from 3-amino-1,2,4-triazole (ATA). We analyze the UV-vis spectroscopy at different media, and we analyze and discuss the acid-base equilibria taking into account tautomeric equilibria at different pH. The low aqueous solubility at neu...

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Detalles Bibliográficos
Autores principales: Lamanna, M.E., De La Horra, E., Sanabria, J., Jacobo, S.E., D'Accorso, N.B.
Formato: JOUR
Materias:
characterization
endpoint indicator
filter paper
oligo-3-amino-1,2,4-triazole
tautomeric equilibria
UV-vis
3-Amino-1
Acid-base behavior
Acid-base equilibria
Ammonia concentrations
Aqueous solubility
Filter papers
Neutral pH
Tautomeric equilibria
UV-vis spectroscopy
Ammonia
Characterization
Ultraviolet spectroscopy
Ultraviolet visible spectroscopy
Oligomers
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00218995_v123_n5_p2768_Lamanna
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We report the acid-base behavior of OATA, an oligomer synthesized from 3-amino-1,2,4-triazole (ATA). We analyze the UV-vis spectroscopy at different media, and we analyze and discuss the acid-base equilibria taking into account tautomeric equilibria at different pH. The low aqueous solubility at neutral pH can be attributed to the neutral form. Indeed, OATA was synthesized in an ordinary filter paper, which can be used as a sensor for ammonia as well as endpoint indication. Using the OATA-containing paper, ammonia concentrations in a solution as low as 5 ppm could be measured. © 2011 Wiley Periodicals, Inc.

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