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 | Size | Format | |
---|---|---|---|---|
Liang_Smart_Off_Gate.pdf | 1.34 MB | Adobe PDF | View/Open |
Page views
130
Last Week
1
1
Last month
Citations as of Apr 14, 2024
Downloads
46
Citations as of Apr 14, 2024
SCOPUSTM
Citations
57
Last Week
1
1
Last month
Citations as of Apr 12, 2024
WEB OF SCIENCETM
Citations
57
Last Week
1
1
Last month
Citations as of Apr 18, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.