Aminobenzopyranoxanthene based salicylhydrazone probe for colorimetric detection of Cu2+

Yang Yang; Chang Pei; Chao-ying Gao; Jinting Ye; Jinglin Liu

Sensors International (Jan 2023)

Aminobenzopyranoxanthene based salicylhydrazone probe for colorimetric detection of Cu2+

Yang Yang,
Chang Pei,
Chao-ying Gao,
Jinting Ye,
Jinglin Liu

Affiliations

Yang Yang: Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, Tongliao, 028000, PR China; College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, PR China; Corresponding author. Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, Tongliao, 028000, PR China.
Chang Pei: Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, Tongliao, 028000, PR China
Chao-ying Gao: Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, Tongliao, 028000, PR China
Jinting Ye: Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, Tongliao, 028000, PR China
Jinglin Liu: Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, Tongliao, 028000, PR China; College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, PR China; Corresponding author. College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, PR China.

Journal volume & issue: Vol. 4
p. 100214

Abstract

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A new colorimetric probe aminobenzopyranoxanthene salicylhydrazone (ABPX-Sal) has been synthesized by condensation of salicylaldehyde with aminobenzopyranoxanthene hydrazide (ABPX-hy). Owing to its spirohydrazone structure, this probe showed a significant absorption enhancement at 419 nm in the presence of Cu2+, and the color changed from colorless to yellow. There was a good linear relationship between the absorption intensity of ABPX-Sal and the amount of Cu2+ (R2 = 0.9928), and the detection limit was calculated to be 0.912 μM. The binding mode between ABPX-Sal and Cu2+ was 1:2, which was proved by ESI-MS. The sensing mechanism was revealed to be a spiro-ring enacted coordination process by DFT calculation. The desired level of selectivity, sensitivity (within 30 s), and reusability made this probe very practical in acidic samples.

Published in Sensors International

ISSN: 2666-3511 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://www.keaipublishing.com/en/journals/sensors-international/

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