Ultrasensitive colorimetric and ratiometric detection of Cu2+ : acid-base properties, complexation, and binding studies

Daniel J. Fanna; Luis M. P. Lima; Alexander R. Craze; Adrian Trinchi; Richard Wuhrer; Leonard F. Lindoy; Gang Wei; Jason K. Reynolds; Feng Li

Ultrasensitive colorimetric and ratiometric detection of Cu2+ : acid-base properties, complexation, and binding studies

Daniel J. Fanna, Luis M. P. Lima, Alexander R. Craze, Adrian Trinchi, Richard Wuhrer, Leonard F. Lindoy, Gang Wei, Jason K. Reynolds, Feng Li

Western Sydney University

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Herein, we report the synthesis and characterization of a chemosensor, 5-(diethylamino)-2-(2,3-dihydro-1H-perimidin-2-yl)phenol (HL), synthesized from a condensation between 4-(diethylamino)salicylaldehyde and 1,8-diaminonaphthalene. Upon investigation of the sensing properties of HL, it was found that this sensor may be employed for simple yet efficient detection of Cu2+ in aqueous methanol solutions. The selective and ratiometric response to Cu2+ yielded an outstandingly low limit of detection of 3.7 nM by spectrophotometry and is also useful as a naked-eye sensor from 2.5 Î¼M. The system was studied by spectrophotometric pH titrations to determine Cu2+ binding constants and complex speciation. Binding of Cu2+ to HL occurs in 1:1 stoichiometry, in good agreement with high-resolution electrospray ionization mass spectrometry (ESI-HRMS) results, Cu2+ titrations, and Job's plot experiments, while the coordination geometry was tentatively assigned as square pyramidal by spectroscopic studies.

Original language	English
Pages (from-to)	10471-10480
Number of pages	10
Journal	ACS Omega
Volume	3
Issue number	9
Publication status	Published - 4 Sept 2018

Bibliographical note

Publisher Copyright:
© 2018 American Chemical Society.

Open Access - Access Right Statement

This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.

Keywords

chemical reactions
colorimetric analysis
copper
drinking water

Cite this

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title = "Ultrasensitive colorimetric and ratiometric detection of Cu2+ : acid-base properties, complexation, and binding studies",

abstract = "Herein, we report the synthesis and characterization of a chemosensor, 5-(diethylamino)-2-(2,3-dihydro-1H-perimidin-2-yl)phenol (HL), synthesized from a condensation between 4-(diethylamino)salicylaldehyde and 1,8-diaminonaphthalene. Upon investigation of the sensing properties of HL, it was found that this sensor may be employed for simple yet efficient detection of Cu2+ in aqueous methanol solutions. The selective and ratiometric response to Cu2+ yielded an outstandingly low limit of detection of 3.7 nM by spectrophotometry and is also useful as a naked-eye sensor from 2.5 {\^I}¼M. The system was studied by spectrophotometric pH titrations to determine Cu2+ binding constants and complex speciation. Binding of Cu2+ to HL occurs in 1:1 stoichiometry, in good agreement with high-resolution electrospray ionization mass spectrometry (ESI-HRMS) results, Cu2+ titrations, and Job's plot experiments, while the coordination geometry was tentatively assigned as square pyramidal by spectroscopic studies.",

keywords = "chemical reactions, colorimetric analysis, copper, drinking water",

author = "Fanna, {Daniel J.} and Lima, {Luis M. P.} and Craze, {Alexander R.} and Adrian Trinchi and Richard Wuhrer and Lindoy, {Leonard F.} and Gang Wei and Reynolds, {Jason K.} and Feng Li",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

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language = "English",

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pages = "10471--10480",

journal = "ACS Omega",

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T1 - Ultrasensitive colorimetric and ratiometric detection of Cu2+ : acid-base properties, complexation, and binding studies

AU - Fanna, Daniel J.

AU - Lima, Luis M. P.

AU - Craze, Alexander R.

AU - Trinchi, Adrian

AU - Wuhrer, Richard

AU - Lindoy, Leonard F.

AU - Wei, Gang

AU - Reynolds, Jason K.

AU - Li, Feng

PY - 2018/9/4

Y1 - 2018/9/4

N2 - Herein, we report the synthesis and characterization of a chemosensor, 5-(diethylamino)-2-(2,3-dihydro-1H-perimidin-2-yl)phenol (HL), synthesized from a condensation between 4-(diethylamino)salicylaldehyde and 1,8-diaminonaphthalene. Upon investigation of the sensing properties of HL, it was found that this sensor may be employed for simple yet efficient detection of Cu2+ in aqueous methanol solutions. The selective and ratiometric response to Cu2+ yielded an outstandingly low limit of detection of 3.7 nM by spectrophotometry and is also useful as a naked-eye sensor from 2.5 Î¼M. The system was studied by spectrophotometric pH titrations to determine Cu2+ binding constants and complex speciation. Binding of Cu2+ to HL occurs in 1:1 stoichiometry, in good agreement with high-resolution electrospray ionization mass spectrometry (ESI-HRMS) results, Cu2+ titrations, and Job's plot experiments, while the coordination geometry was tentatively assigned as square pyramidal by spectroscopic studies.

AB - Herein, we report the synthesis and characterization of a chemosensor, 5-(diethylamino)-2-(2,3-dihydro-1H-perimidin-2-yl)phenol (HL), synthesized from a condensation between 4-(diethylamino)salicylaldehyde and 1,8-diaminonaphthalene. Upon investigation of the sensing properties of HL, it was found that this sensor may be employed for simple yet efficient detection of Cu2+ in aqueous methanol solutions. The selective and ratiometric response to Cu2+ yielded an outstandingly low limit of detection of 3.7 nM by spectrophotometry and is also useful as a naked-eye sensor from 2.5 Î¼M. The system was studied by spectrophotometric pH titrations to determine Cu2+ binding constants and complex speciation. Binding of Cu2+ to HL occurs in 1:1 stoichiometry, in good agreement with high-resolution electrospray ionization mass spectrometry (ESI-HRMS) results, Cu2+ titrations, and Job's plot experiments, while the coordination geometry was tentatively assigned as square pyramidal by spectroscopic studies.

KW - chemical reactions

KW - colorimetric analysis

KW - copper

KW - drinking water

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:49065

M3 - Article

SN - 2470-1343

VL - 3

SP - 10471

EP - 10480

JO - ACS Omega

JF - ACS Omega

IS - 9

ER -

Ultrasensitive colorimetric and ratiometric detection of Cu2+ : acid-base properties, complexation, and binding studies

Abstract

Bibliographical note

Open Access - Access Right Statement

Keywords

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