Results 21 to 30 of about 983,317 (272)

Measurement of the pressure dependence of air fluorescence emission induced by electrons [PDF]

Astropart.Phys.28:41-57,2007, 2007
The fluorescence detection of ultra high energy (> 10^18 eV) cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules, which are excited by the cosmic ray shower particles along their path in the atmosphere. We have made a precise measurement of the fluorescence light spectrum excited by MeV electrons in dry ...
arxiv   +1 more source

Fullerenol Quantum Dots-Based Highly Sensitive Fluorescence Aptasensor for Patulin in Apple Juice

Toxins, 2022
A highly selective and sensitive aptasensor for detecting patulin (PAT) was constructed based on the fluorescence quenching of fullerenol quantum dots (FOQDs) towards carboxytetramethylrhodamine (TAMRA) through PET mechanism. The π-π stacking interaction
Hua Pang, Hui Li, Wen Zhang, Jin Mao, Liangxiao Zhang, Zhaowei Zhang, Qi Zhang, Du Wang, Jun Jiang, Peiwu Li   +9 more
doaj   +1 more source

Reaction Mechanism Spectroscopy Studies of Protein and Orange II

Chemical Engineering Transactions, 2015
In this paper, the interaction of Orange II and Human Serum Albumin was studied by fluorescence spectroscopy under simulated physiological conditions. The affection of pigment and serum albumin may cause changes in the microenvironment.
L. Fu, X.H. Hu, S.H. Zhou, S.N. Chu, H. Ding   +4 more
doaj   +1 more source

Insight into the Unique Fluorescence Quenching Property of Metal-Organic Frameworks upon DNA Binding.

Analytical Chemistry, 2017
Metal-organic frameworks (MOFs) have been successfully used as efficient quenchers for fluorescent DNA detection. However, the surface charge property of MOFs can inevitably affect their fluorescence quenching behavior.
Huai-Song Wang, Hai-Ling Liu, Kang Wang, Ya Ding, Jingjuan Xu, X. Xia, Hongyuan Chen   +6 more
semanticscholar   +1 more source

Characterization of the Interactions between Minocycline Hydrochloride and Trypsin with Spectroscopic and Molecular Docking Technology

Molecules, 2023
In the current study, the interaction of minocycline hydrochloride (MC) and trypsin (TRP) was studied using fluorescence spectroscopy, synchronous fluorescence spectroscopy, three-dimensional fluorescence spectroscopy, UV-Vis spectroscopy, and molecular ...
Xiaoxia Wang, Jisheng Sun, Litong Ma, Zhihua Nie, Huazheng Sai, Jianguo Cheng, Jianguo Duan   +6 more
doaj   +1 more source

Laser-induced fluorescence quenching of red fluorescent dyes with green excitation: avoiding artifacts in PIE-FRET and FCCS analysis [PDF]

, 2018
Multicolor excitation is at the core of many fluorescence spectroscopy techniques such as PIE-FRET, ALEX-FRET, or FCCS. However, the influence of the multiple laser excitations on the dye photophysics is often overlooked. Here, we show that green laser pulses can surprisingly quench the fluorescence of common red dyes Alexa Fluor 647 and Atto 647N ...
arxiv   +1 more source

Lanthanide-based metal-organic framework nanosheets with unique fluorescence quenching properties for two-color intracellular adenosine imaging in living cells

, 2017
Two-dimensional (2D) materials have attracted tremendous interest as fluorescence quenchers of dye-labeled biomolecules for application in biosensing.
Huai-Song Wang, Jian Li, Jin-Yi Li, Kang Wang, Ya Ding, X. Xia   +5 more
semanticscholar   +1 more source

Solvatochromism of (-)-Epigallocatechin 3-O-Gallate (EGCG) Fluorescence: Dependence on Solvent Protonicity [PDF]

arXiv, 2021
Health benefits of EGCG are well established; however, the mechanisms of EGCG action are not completely understood. In our previous study we discovered solvatochromism of EGCG fluorescence and described the dependence of fluorescence maxima on solvent polarity. We also noted that fluorescence intensity (FI) depends on solvent.
arxiv  

Fluorescence quenching in plasmonic dimers due to electron tunneling [PDF]

arXiv, 2021
Plasmonic nanoparticles provide an ideal environment for the enhancement of fluorescent emission. On the one hand, they locally amplify the electromagnetic fields, increasing the emitter excitation rate, and on the other hand, they provide a high local density of states that accelerates spontaneous emission. However, when the emitter is placed in close
arxiv  

Validation of a Novel Strategy for Fluorescence Quenching for a Self-Quenching Fluorogenic Probe and Its Application for Visual Loop-Mediated Isothermal Amplification Detection During Food Safety Analysis

Foods
The self-quenching fluorogenic probe facilitates precise identification of LAMP (loop-mediated isothermal amplification) amplicons, unaffected by non-specific products resulting from primer dimers.
Sisi Huang, Shihui Wang, Tianlong Wang, Hongwei Song, Yan Guo, Xiong Xiong, Libin Wang   +6 more
doaj   +1 more source