Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/60975
Title: A smart "off-on" gate for the in situ detection of hydrogen sulphide with cu(ii)-assisted europium emission
Authors: Liang, Z
Tsoi, TH
Chan, CF
Dai, L
Wu, Y
Du, G
Zhu, L
Lee, CS
Wong, WT 
Law, GL 
Wong, KL
Issue Date: 2016
Source: Chemical science, 2016, v. 7, no. 3, p. 2151-2156
Abstract: A water-soluble and emissive Eu-complex (EuL1) bearing a DO3A(Eu3+)-pyridine-aza-crown motif has been prepared and its Cu2+ complex has been demonstrated to be a smart luminescence "off-on" gate for H2S detection in water with a nano-molar detection limit (60 nM). EuL1 binds to Cu2+ ions selectively (KB = 1.2 × 105 M-1) inducing 17-fold luminescence quenching and forming a 1 : 1 stoichiometric complex (EuL1-Cu2+), which responds to H2S selectively with restoration of the original Eu emission of EuL1 followed by a further 40-fold luminescence enhancement, forming a 1 : 1 stoichiometric complex (EuL1-Na2S, KB = 1.5 × 104 M-1). Without Cu2+ ions, EuL1 showed non-specific binding towards H2S with only a 5-fold luminescence enhancement.
Publisher: Royal Society of Chemistry
Journal: Chemical science 
ISSN: 2041-6520 (print)
2041-6539 (online)
DOI: 10.1039/c5sc04091d
Rights: © The Royal Society of Chemistry 2016
Open Access Article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (https://creativecommons.org/licenses/by/3.0/).
The following publication Liang, Z., Tsoi, T. H., Chan, C. F., Dai, L., Wu, Y., Du, G., ... & Wong, K. L. (2016). A smart “off–on” gate for the in situ detection of hydrogen sulphide with Cu (II)-assisted europium emission. Chemical science, 7(3), 2151-2156 is available at https://doi.org/10.1039/c5sc04091d
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Liang_Smart_Off_Gate.pdf1.34 MBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record
PIRA download icon_1.1View/Download Full Text

SCOPUSTM   
Citations

41
Last Week
1
Last month
Citations as of Sep 6, 2020

WEB OF SCIENCETM
Citations

44
Last Week
1
Last month
Citations as of Feb 3, 2021

Page view(s)

173
Last Week
6
Last month
Citations as of Feb 4, 2021

Download(s)

2
Citations as of Feb 4, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.