“Molecular beacon”-directed fluorescence of Hoechst dyes for visual detection of Hg(ii) and biothiols and its application for a logic gate

2013 ◽  
Vol 49 (21) ◽  
pp. 2133 ◽  
Author(s):  
Min Zhang ◽  
Huynh-Nhu Le ◽  
Xiao-Qin Jiang ◽  
Bang-Ce Ye
Keyword(s):  
Molecular Beacon ◽  
Visual Detection ◽  
Logic Gate

scholarly journals Visual Detection of Triethylamine and a Dual Input/Output Logic Gate Based on a Eu3+-Complex

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3244
Author(s):  
Bao-Ning Li ◽  
Yuan-Yuan Liu ◽  
Ya-Ping Wang ◽  
Mei Pan
Keyword(s):  
Energy Transfer ◽  
Optical Sensors ◽  
Visual Detection ◽  
Logic Gate ◽  
Dmso Solution ◽  
Input Output ◽  
Promising Candidate ◽  
Bluish Green ◽  
Red Luminescence ◽  
Luminescence Color

A series of Ln3+-metal centered complexes, Ln(TTA)3(DPPI) (Ln = La, 1; Ln = Eu, 2; Ln = Tb, 3; or Ln = Gd, 4) [(DPPI = N-(4-(1H-imidazo [4,5-f][1,10]phenanthrolin-2-yl)phenyl)-N-phenylbenzenamine) and (TTA = 2-Thenoyltrifluoroacetone)] have been synthesized and characterized. Among which, the Eu3+-complex shows efficient purity red luminescence in dimethylsulfoxide (DMSO) solution, with a Commission International De L’ Eclairage (CIE) coordinate at x = 0.638, y = 0.323 and ΦEuL = 38.9%. Interestingly, increasing the amounts of triethylamine (TEA) in the solution regulates the energy transfer between the ligand and the Eu3+-metal center, which further leads to the luminescence color changing from red to white, and then bluish-green depending on the different excitation wavelengths. Based on this, we have designed the IMPLICATION logic gate for TEA recognition by applying the amounts of TEA and the excitation wavelengths as the dual input signal, which makes this Eu3+-complex a promising candidate for TEA-sensing optical sensors.

A reversible fluorescent logic gate for sensing mercury and iodide ions based on a molecular beacon

The Analyst ◽  
2013 ◽  
Vol 138 (18) ◽  
pp. 5281 ◽  
Author(s):  
Xu Wu ◽  
Jiao Chen ◽  
Julia Xiaojun Zhao
Keyword(s):  
Molecular Beacon ◽  
Logic Gate ◽  
Iodide Ions

Molecular beacon-based NAND logic gate for sensing triplex DNA binders

RSC Advances ◽  
2014 ◽  
Vol 4 (72) ◽  
pp. 38389-38392 ◽  
Author(s):  
Kai-Cheng Lin ◽  
Chia-Yin Kuo ◽  
Chih-Chun Nieh ◽  
Wei-Lung Tseng
Keyword(s):  
Molecular Beacon ◽  
Logic Gate ◽  
Triplex Dna ◽  
Dna Binders

Molecular beacon-based NAND logic gate was simple, rapid, selective, and sensitive for probing triplex DNA binders.

scholarly journals Dual-Emission Fluorescence Probe Based on CdTe Quantum Dots and Rhodamine B for Visual Detection of Mercury and Its Logic Gate Behavior

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 713
Author(s):  
Yuefeng Gao ◽  
Sai Xu ◽  
Zhijian Liu ◽  
Kezhen Yu ◽  
Xinxiang Pan
Keyword(s):  
Quantum Dots ◽  
Rhodamine B ◽  
Visual Detection ◽  
Fluorescence Probe ◽  
Limit Of Detection ◽  
Logic Gate ◽  
Cdte Quantum Dots ◽  
Fluorescence Signal ◽  
Dual Emission ◽  
Cdte Qds

It is urgent that a convenient and sensitive technique of detecting Hg2+ be developed because of its toxicity. Conventional fluorescence analysis works with a single fluorescence probe, and it often suffers from signal fluctuations which are influenced by external factors. In this research, a novel dual-emission probe assembled through utilizing CdTe quantum dots (QDs) and rhodamine B was designed to detect Hg2+ visually. Only the emission of CdTe QDs was quenched after adding Hg2+ in the dual-emission probe, which caused an intensity ratio change of the two different emission wavelengths and hence facilitated the visual detection of Hg2+. Compared to single emission QDs-based probe, a better linear relationship was shown between the variation of fluorescence intensity and the concentration of Hg2+, and the limit of detection (LOD) was found to be11.4 nM in the range of 0–2.6 μM. Interestingly, the intensity of the probe containing Hg2+ could be recovered in presence of glutathione (GSH) due to the stronger binding affinity of Hg2+ towards GSH than that towards CdTe QDs. Based on this phenomenon, an IMPLICATION logic gate using Hg2+/GSH as inputs and the fluorescence signal of QDs as an output was constructed.

scholarly journals Logic Gates: Simple and Universal Platform for Logic Gate Operations Based on Molecular Beacon Probes (Small 14/2012)

Small ◽  
2012 ◽  
Vol 8 (14) ◽  
pp. 2129-2129 ◽  
Author(s):  
Ki Soo Park ◽  
Myung Wan Seo ◽  
Cheulhee Jung ◽  
Joon Young Lee ◽  
Hyun Gyu Park
Keyword(s):  
Molecular Beacon ◽  
Logic Gate ◽  
Logic Gates

Simple and Universal Platform for Logic Gate Operations Based on Molecular Beacon Probes

Small ◽  
2012 ◽  
Vol 8 (14) ◽  
pp. 2203-2212 ◽  
Author(s):  
Ki Soo Park ◽  
Myung Wan Seo ◽  
Cheulhee Jung ◽  
Joon Young Lee ◽  
Hyun Gyu Park
Keyword(s):  
Molecular Beacon ◽  
Logic Gate
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