Cholic acid-based high sensitivity fluorescent sensor for α,ω-dicarboxylate: an intramolecular excimer emission quenched by complexation

Tetrahedron ◽  
2006 ◽  
Vol 62 (50) ◽  
pp. 11687-11696 ◽  
Author(s):  
Shun-Ying Liu ◽  
Yong-Bing He ◽  
Wing Hong Chan ◽  
Albert W.M. Lee
Keyword(s):  
Cholic Acid ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Excimer Emission ◽  
Intramolecular Excimer

A phthalocyanine-based fluorescent sensor for Zn2+ ion

2013 ◽  
Vol 17 (01n02) ◽  
pp. 99-103 ◽  
Author(s):  
Hui He ◽  
Jian-Yong Liu ◽  
Dennis K.P. Ng
Keyword(s):  
Metal Ions ◽  
Spectral Properties ◽  
Fluorescence Spectra ◽  
Near Infrared ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Absorption And Fluorescence Spectra

This paper describes the preparation and spectral properties of a near-infrared fluorophore in which two bis(2-picolyl)amino moieties are axially linked to a silicon(IV) phthalocyanine core. The effects of various metal ions on its absorption and fluorescence spectra have been examined. The results indicate that this compound shows a high sensitivity and moderate selectivity toward Zn2+ ion.

A dual-responsive fluorescent sensor for Hg2+ and thiols based on N-doped silicon quantum dots and its application in cell imaging

2019 ◽  
Vol 7 (44) ◽  
pp. 7033-7041 ◽  
Author(s):  
Sansan Shen ◽  
Bohui Huang ◽  
Xiaofeng Guo ◽  
Hong Wang
Keyword(s):  
Quantum Dots ◽  
Response Time ◽  
Cell Imaging ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Silicon Quantum Dots ◽  
Fast Response Time ◽  
Dual Responsive ◽  
Doped Silicon

An on–off–on fluorescent sensor based on N-SiQD has the advantages of fast response time and high sensitivity to Hg2+ and GSH.

Pyrene-tiaraed pillar[5]arene: Strong intramolecular excimer emission applicable for photo-writing

2020 ◽  
Author(s):  
Chao Peng ◽  
Wenting Liang ◽  
Jiecheng Ji ◽  
Chunying Fan ◽  
Kuppusamy Kanagaraj ◽  
...  
Keyword(s):  
Excimer Emission ◽  
Intramolecular Excimer

A NIR fluorescent sensor for biothiols based on a dicyanoisophorone derivative with a large Stokes shift and high quantum yield

2019 ◽  
Vol 43 (24) ◽  
pp. 9614-9622
Author(s):  
Ming Qian ◽  
Liuwei Zhang ◽  
Jingyun Wang
Keyword(s):  
Quantum Yield ◽  
Fluorescent Sensor ◽  
Stokes Shift ◽  
High Sensitivity ◽  
Living Cells ◽  
Rapid Response ◽  
High Quantum Yield ◽  
Large Stokes Shift ◽  
High Quantum ◽  
Nir Fluorescence

Probe N-Bio exhibited rapid response, high sensitivity and strong NIR fluorescence in the detection of biothiols in living cells.

Bifunctional Nanoparticles as a Recyclable Fluorescent Sensor for pH and Cu2+ Detection and Removal of Heavy Metal Ions

NANO ◽  
2020 ◽  
Vol 15 (04) ◽  
pp. 2050048
Author(s):  
Yong Qian ◽  
Xiangfu Meng ◽  
Hongji Liu ◽  
Xingyu Wang ◽  
Hui Wang
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal Ions ◽  
High Efficiency ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Label Free ◽  
Practical Applications ◽  
Surrounding Environment ◽  
Label Free Detection ◽  
Recyclable Adsorbent

Magnetic and fluorescent-based sensors have demonstrated widely applications due to their easily recycle and quickly optical response. However, the complex synthesis and weaker function of these sensors limit their practical applications. Herein, an unmodified, magnetic-functionalized carbon dots-based fluorescent sensor has been developed for label-free detection of pH and Cu[Formula: see text] with high sensitivity. The sensors can not only reversibly quench and recover the fluorescence signals in response to the variation of surrounding environment including pH and Cu[Formula: see text], but also be used as a high-efficiency recyclable adsorbent for removing Cu[Formula: see text], Hg[Formula: see text], Cr[Formula: see text] and Pb[Formula: see text] from aqueous solution.

scholarly journals A Red Emissive Fluorescent Turn-on Sensor for the Rapid Detection of Selenocysteine and Its Application in Living Cells Imaging

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4768 ◽  
Author(s):  
Zongcheng Wang ◽  
Huihuang Zheng ◽  
Chengliang Zhang ◽  
Dongfang Tang ◽  
Qiyao Wu ◽  
...  
Keyword(s):  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Living Cells ◽  
Fluorescent Sensors ◽  
Quantitative Detection ◽  
Fast Reaction ◽  
Detection Range ◽  
Long Wavelength ◽  
Turn On

The content of selenocysteine in cells has an important effect on a variety of human diseases, and the detection of selenocysteine by fluorescent sensors in vivo has shown many advantages. In order to further develop fast-reaction-time, good-selectivity, and high-sensitivity long-wavelength selenocysteine fluorescent sensors, we designed and synthesized the compound YZ-A4 as a turn-on fluorescent sensor to detect the content of selenocysteine. The quantitative detection range of the sensor YZ-A4 to selenocysteine was from 0 to 32 μM, and the detection limit was as low as 11.2 nM. The sensor displayed a rapid turn-on response, good selectivity, and high sensitivity to selenocysteine. Finally, we have demonstrated that YZ-A4 could be used for fluorescence imaging of selenocysteine in living cells.

scholarly journals A Naphthalimide-Benzothiazole Conjugate as Colorimetric and Fluorescent Sensor for Selective Trinitrophenol Detection

Chemosensors ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 38 ◽  
Author(s):  
Pramod D. Jawale Patil ◽  
Rajita D. Ingle ◽  
Sopan M. Wagalgave ◽  
Rajesh S. Bhosale ◽  
Sidhanath V. Bhosale ◽  
...  
Keyword(s):  
Color Change ◽  
Limit Of Detection ◽  
Fluorescent Sensor ◽  
Uv Light ◽  
High Sensitivity ◽  
Design And Synthesis ◽  
Bonding Interaction ◽  
Sensitivity And Selectivity ◽  
Donor Acceptor ◽  
Aromatic Nitro

Although chemical structural modification of naphthalimides is widely employed for the purpose of sensing explosives, the effects of such modification have been little explored. Herein, we report the design and synthesis of a new naphthalimide-benzothiazole conjugate (1) and its ability to sense various nitrophenols by means of its colorimetric and fluorescent characteristics. Under long-range UV light (365 nm), 1 displayed a color change of its solution from bluish to colorless only upon addition of 2,4,6-trinitrophenol (TNP). Photoluminescence spectroscopy showed quantitative fluorescence quenching by TNP of the emission peaks of 1 at 398 nm and 418 nm due to donor–acceptor electron transfer. The interaction of 1 with TNP was via a cooperative, non-covalent hydrogen-bonding interaction. Receptor 1 exhibited high sensitivity and selectivity towards TNP over various aromatic nitro analytes. The binding constant (K) and Stern–Volmer constant (Ksv) between 1 and TNP were found to be 5.332 × 10−5 M and 2.271 × 106 M−1, respectively. Furthermore, the limit of detection was calculated and found to be as low as 1.613 × 10−10 M.

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