A Novel Highly Sensitive Dual-channel Chemical Sensor for Sequential Recognition of Cu2+ and CN- in Aqueous Media and its Bioimaging Applications on Living Cells

2021 ◽  
Author(s):  
Yong-Qiang Xie ◽  
You-Ming Zhang ◽  
Zhao-Hui Li ◽  
Qi Xiao-Ni ◽  
Hong Yao ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Aqueous Media ◽  
Living Cells ◽  
Chemical Probe ◽  
Dual Channel ◽  
Highly Sensitive ◽  
Sequential Recognition

A simple and unique dual-channel chemical probe (DH) was designed and synthesized, which not only realized sequential recognition of Cu2+ and CN− by colorimetric and fluorometric methods, but also realized...

A novel bifunctional chemosensor for bioimaging in living cells with highly sensitive colorimetric and fluorescent detection of CN- and Al3+

2022 ◽  
Author(s):  
luo wentao ◽  
Zhiyang Yuwen ◽  
Hui Li ◽  
Shouzhi Pu
Keyword(s):  
Living Cells ◽  
Fluorescent Chemosensor ◽  
Fluorescent Detection ◽  
Channel Response ◽  
Dual Channel ◽  
Highly Sensitive

A novel colorimetric/fluorescent chemosensor (1o) was designed and synthesized for the detection of CN- and Al3+. 1o exhibited a selective dual channel response to CN-, while it showed fluorescence changes...

Elaboration of a chemical sensor based on polyaniline and sulfanilic acid diazonium salt for highly sensitive detection nitrite ions in acidified aqueous media

2018 ◽  
Vol 4 (7) ◽  
pp. 1024-1034 ◽  
Author(s):  
Abdoulaye Diarisso ◽  
Modou Fall ◽  
Noureddine Raouafi
Keyword(s):  
Aqueous Medium ◽  
Sulfonic Acid ◽  
Chemical Sensor ◽  
Diazonium Salt ◽  
Aqueous Media ◽  
Sulfanilic Acid ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

The work describes the use of sulfonic acid-functionalized GCE as a scaffold to build a highly sensitive PANI-based sensor for nitrite ions in aqueous medium.

A novel colorimetric/fluorescence dual-channel sensor based on NBD for the rapid and highly sensitive detection of cysteine and homocysteine in living cells

2016 ◽  
Vol 8 (11) ◽  
pp. 2420-2426 ◽  
Author(s):  
Youming Shen ◽  
Xiangyang Zhang ◽  
Youyu Zhang ◽  
Chunxiang Zhang ◽  
Junling Jin ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Optical Sensing ◽  
Living Cells ◽  
Sensitive Detection ◽  
Turn On ◽  
Dual Channel ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

A novel and simple turn-on fluorescent probe bearing NBD and benzaldehyde fragments for the rapid optical sensing of biothiols has been designed and synthesized.

A highly sensitive dual-channel chemical sensor for selective identification of B4O72−

2021 ◽  
Vol 160 ◽  
pp. 105676 ◽  
Author(s):  
Ji-Fa Wang ◽  
Ruo-Nan Bian ◽  
Tao Feng ◽  
Ke-Feng Xie ◽  
Li Wang ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Dual Channel ◽  
Highly Sensitive

Fluorescence ratio imaging of dynamic intracellular ionic signals

1988 ◽  
Vol 46 ◽  
pp. 42-43
Author(s):  
R. Y. Tsien ◽  
A. Minta ◽  
M. Poenie ◽  
J.P.Y. Kao ◽  
A. Harootunian
Keyword(s):  
Binding Sites ◽  
Living Cells ◽  
Molecular Engineering ◽  
Ph Indicators ◽  
Highly Sensitive ◽  
Fluorescence Ratio Imaging ◽  
Ratio Imaging ◽  
Technical Advances ◽  
Indicator Dyes ◽  
Fluorescein Dyes

Recent technical advances now enable the continuous imaging of important ionic signals inside individual living cells with micron spatial resolution and subsecond time resolution. This methodology relies on the molecular engineering of indicator dyes whose fluorescence is strong and highly sensitive to ions such as Ca2+, H+, or Na+, or Mg2+. The Ca2+ indicators, exemplified by fura-2 and indo-1, derive their high affinity (Kd near 200 nM) and selectivity for Ca2+ to a versatile tetracarboxylate binding site3 modeled on and isosteric with the well known chelator EGTA. The most commonly used pH indicators are fluorescein dyes (such as BCECF) modified to adjust their pKa's and improve their retention inside cells. Na+ indicators are crown ethers with cavity sizes chosen to select Na+ over K+: Mg2+ indicators use tricarboxylate binding sites truncated from those of the Ca2+ chelators, resulting in a more compact arrangement of carboxylates to suit the smaller ion.

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