2020
DOI: 10.1021/acsapm.0c00878
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Rhodamine-Appended Polymeric Probe: An Efficient Colorimetric and Fluorometric Sensing Platform for Hg2+ in Aqueous Medium and Living Cells

Abstract: Nowadays, monitoring of trace amounts of Hg 2+ ions in environmental and biological systems has become crucial owing to their detrimental effects on living organisms. To serve this purpose, a rhodamine-affixed water-soluble polymeric probe, CP2, was fabricated to detect Hg 2+ ions in water and living cells. The sensing performance toward several competitive cations was assessed via UV−vis spectroscopy and fluorescence spectroscopy, which indicated high selectivity of the polymeric probe toward Hg 2+ ions. CP2 … Show more

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Cited by 42 publications
(23 citation statements)
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“…In contrast, although the linear range fitted for I – in this experimental method was relatively narrow, the linear range fitted for the detection of Hg 2+ by this method showed a wider linear range than that reported method in the literature [ 17 , 42 , 43 , 59–61 ]. The calculated detection limit obtained by this experimental method was inferior to the reported detection method [ 17 , 27 , 55 , 56 , 58 , 60 ], and better than the reported method [ 18 , 42 , 43 , 53 , 54 , 57 , 59 , 61 ]. This method was comparable with the other analytical techniques [ 6 , 7 ], however, the other analytical techniques required high-cost instruments, professional operation, extensive sample pretreatment, inevitably rendering them unsuitable for real-time and in the field detection of I − and Hg 2+ .…”
Section: Resultscontrasting
confidence: 77%
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“…In contrast, although the linear range fitted for I – in this experimental method was relatively narrow, the linear range fitted for the detection of Hg 2+ by this method showed a wider linear range than that reported method in the literature [ 17 , 42 , 43 , 59–61 ]. The calculated detection limit obtained by this experimental method was inferior to the reported detection method [ 17 , 27 , 55 , 56 , 58 , 60 ], and better than the reported method [ 18 , 42 , 43 , 53 , 54 , 57 , 59 , 61 ]. This method was comparable with the other analytical techniques [ 6 , 7 ], however, the other analytical techniques required high-cost instruments, professional operation, extensive sample pretreatment, inevitably rendering them unsuitable for real-time and in the field detection of I − and Hg 2+ .…”
Section: Resultscontrasting
confidence: 77%
“… Optical probe Linear range (μM) LOD (M) Ref. Quinoline-based derivative/I − 0–7 3.12 × 10 −9 [ 17 ] Green-emission carbon dots 0–50 8.9 × 10 −7 [ 18 ] Rhodamine-containing CP 10–50 1.07 × 10 −8 [ 27 ] Triphenylamine-based CP/I − 0–7 1.1 × 10 −7 [ 42 ] Triazole and Cz-containing CP/I − 0–10 1.23 × 10 −7 [ 43 ] Blue-emission carbon dots 0–40 9.0 × 10 −7 [ 54 ] Triphenylamine-bodipy derivative 0–7.5 2.24 × 10 −7 [ 59 ] Naphthalimide derivative 0.25–10 4.0 × 10 −8 [ 60 ] Coumarin derivative 1–6 2.2 × 10 −7 [ 61 ] Dendritic Carbazole-Based CP/I − 0.005–14.75 9.7 × 10 −8 This work
Figure 11. Photographs of filter paper strips: pristine s...
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Section: Resultsmentioning
confidence: 99%
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“…Double network hydrogels have been prepared from various contents of spirolactam rhodamine 6G, which not only renders crosslinking points but also provides significant mechano‐sensing features 20 . Poly(N‐isopropylacrylamide) (PNIPAM) is a frequently‐used polymer for thermometers and chemosensors due to its specific water‐solubility, which can be controlled by temperature 21–23 . The donor and acceptor fluorophores have been introduced into PNIPAM and designed as multi‐functional ratiometric fluorescent sensors based on FRET mechanism 24–26 .…”
Section: Introductionmentioning
confidence: 99%
“…The sensing mechanism of rhodamine sensors is based on the structural transformation from spirolactam ring to open-loop state when combined with specific ions, releasing strong fluorescent signals. Most rhodamine-derived sensors can only work in organic solvent or organic solvent-water mixtures owing to their inherent poor water solubility, which greatly inhibits their applications in practical biological and environmental systems ( Zhang Y. et al, 2020 ; Geng et al, 2017 ; Choudhury et al, 2020 ; Shi et al, 2016 ). Many efforts have been devoted to inventing fluorescent sensors with good water solubility and biocompatibility, which can be achieved by introducing water-soluble carbohydrates ( Chen and Fang, 2018 ) or hydrophilic polymer segments ( Li et al, 2015 ; Li et al, 2016 ; Geng et al, 2017 ; Rong et al, 2017 ; Wu et al, 2017 ) into rhodamine fluorophores.…”
Section: Introductionmentioning
confidence: 99%