Yang Yang , Chang Pei , Chao-ying Gao , Jinting Ye , Jinglin Liu
{"title":"Aminobenzopyranoxanthene based salicylhydrazone probe for colorimetric detection of Cu2+","authors":"Yang Yang , Chang Pei , Chao-ying Gao , Jinting Ye , Jinglin Liu","doi":"10.1016/j.sintl.2022.100214","DOIUrl":null,"url":null,"abstract":"<div><p>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 Cu<sup>2+</sup>, 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 Cu<sup>2+</sup> (<u>R</u><sup>2</sup> <u>= 0.9928</u>), and the detection limit was calculated to be 0.912 μM. The binding mode between ABPX-Sal and Cu<sup>2+</sup> 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.</p></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors International","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666351122000596","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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