scholarly journals Simple and sensitive colorimetric sensors for the selective detection of Cu(ii)

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11732-11738
Author(s):  
Meifang Liu ◽  
Kequan Wang ◽  
Hanlu Wang ◽  
Jie Lu ◽  
Shukang Xu ◽  
...  
Keyword(s):  
Color Change ◽  
Selective Detection ◽  
Colorimetric Sensors

Cu(ii) ion with L led to a rapid and sensitive color change from colorless to yellow.

scholarly journals Nile-Red-Based Fluorescence Probe for Selective Detection of Biothiols, Computational Study, and Application in Cell Imaging

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4718
Author(s):  
Xiang Rong ◽  
Zhong-Yong Xu ◽  
Jin-Wu Yan ◽  
Zhi-Zhong Meng ◽  
Bin Zhu ◽  
...  
Keyword(s):  
Cell Imaging ◽  
High Selectivity ◽  
Fluorescence Enhancement ◽  
Fluorescence Probe ◽  
Color Change ◽  
Computational Study ◽  
Theoretical Calculations ◽  
Nile Red ◽  
Blue Shift ◽  
Selective Detection

A new colorimetric and fluorescence probe NRSH based on Nile-red chromophore for the detection of biothiols has been developed, exhibiting high selectivity towards biothiols over other interfering species. NRSH shows a blue shift in absorption peak upon reacting with biothiols, from 587 nm to 567 nm, which induces an obvious color change from blue to pink and exhibits a 35-fold fluorescence enhancement at 645 nm in red emission range. NRSH displays rapid (<1 min) response for H2S, which is faster than other biothiols (>5 min). The detection limits of probe NRSH towards biothiols are very low (22.05 nM for H2S, 34.04 nM for Cys, 107.28 nM for GSH and 113.65 nM for Hcy). Furthermore, NRSH is low cytotoxic and can be successfully applied as a bioimaging tool for real-time monitoring biothiols in HeLa cells. In addition, fluorescence mechanism of probe NRSH is further understood by theoretical calculations.

Rapid colorimetric sensing of gadolinium by EGCG-derived AgNPs: the development of a nanohybrid bioimaging probe

2018 ◽  
Vol 54 (32) ◽  
pp. 3981-3984 ◽  
Author(s):  
Rohit Kumar Singh ◽  
Sourav Mishra ◽  
Satyapriya Jena ◽  
Bijayananda Panigrahi ◽  
Bhaskar Das ◽  
...  
Keyword(s):  
Selective Detection ◽  
Colorimetric Sensing ◽  
Colorimetric Sensors

Polyphenol functionalized AgNPs are demonstrated as colorimetric sensors for the selective detection of gadolinium and the generated nanohybrids exhibit bioimaging potential.

Selective colorimetric detection of Cr(iii) and Cr(vi) using gallic acid capped gold nanoparticles

2016 ◽  
Vol 45 (20) ◽  
pp. 8347-8354 ◽  
Author(s):  
Chen Dong ◽  
Genhua Wu ◽  
Zhuqing Wang ◽  
Wenzhi Ren ◽  
Yujie Zhang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gallic Acid ◽  
Color Change ◽  
Colorimetric Assay ◽  
Colorimetric Detection ◽  
Selective Detection

A colorimetric assay is proposed for the selective detection of Cr(iii) and Cr(vi) via the aggregation-induced color change of gallic acid capped gold nanoparticles (GA-AuNPs).

Simple and sensitive colorimetric sensors for the selective detection of Cu2+ in aqueous buffer

2014 ◽  
Vol 117 ◽  
pp. 789-792 ◽  
Author(s):  
Jianzhong Huo ◽  
Kai Liu ◽  
Xiaojun Zhao ◽  
Xingxing Zhang ◽  
Ying Wang
Keyword(s):  
Selective Detection ◽  
Aqueous Buffer ◽  
Colorimetric Sensors

o-Azophenylboronic Acid-Based Colorimetric Sensors for d-Fructose: o-Azophenylboronic Acids with Inserted Protic Solvent Are the Key Species for a Large Color Change

2020 ◽  
Vol 85 (15) ◽  
pp. 9680-9693 ◽  
Author(s):  
Yota Suzuki ◽  
Ayumi Ikeda ◽  
Keiji Ohno ◽  
Takashi Fujihara ◽  
Tomoaki Sugaya ◽  
...  
Keyword(s):  
Color Change ◽  
Protic Solvent ◽  
Key Species ◽  
Colorimetric Sensors

Biological active novel 2,4-dinitro phenyl hydrazones as the colorimetric sensors for selective detection of acetate ion

2014 ◽  
Vol 197 ◽  
pp. 264-273 ◽  
Author(s):  
Vinod Kumar Gupta ◽  
Ashok Kumar Singh ◽  
Shubhrajyotsna Bhardwaj ◽  
Koteswara Rao Bandi
Keyword(s):  
Selective Detection ◽  
Phenyl Hydrazones ◽  
Colorimetric Sensors

Graphene oxide supported gold nanoclusters for the sensitive and selective detection of nitrite ions

The Analyst ◽  
2015 ◽  
Vol 140 (5) ◽  
pp. 1678-1685 ◽  
Author(s):  
Hongda Xu ◽  
Houjuan Zhu ◽  
Mingtai Sun ◽  
Huan Yu ◽  
Huihui Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Color Change ◽  
Gold Nanoclusters ◽  
Selective Detection ◽  
Ratiometric Fluorescence ◽  
Graphene Oxide Sheet ◽  
Fluorescence Color ◽  
Supported Gold

Nitrite selectively reacts to red fluorescent gold nanoclusters supported on blue fluorescent graphene oxide sheet and leads to a ratiometric fluorescence color change.

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