Fluorescence enhancement mechanism in phosphor CaAl 12 O 19 :Mn 4 + modified with alkali‐chloride

2013 ◽  
Vol 8 (5) ◽  
pp. 254-257 ◽  
Author(s):  
Yanan Li ◽  
Zunhong Xiao ◽  
Lizhi Xu ◽  
Yingping Zou ◽  
Mingchun Guo
Keyword(s):  
Fluorescence Enhancement ◽  
Alkali Chloride ◽  
Enhancement Mechanism ◽  
O 19

scholarly journals Ultrafast Excited-State Dynamics of DNA Fluorescent Intercalators:  New Insight into the Fluorescence Enhancement Mechanism

2006 ◽  
Vol 128 (23) ◽  
pp. 7661-7669 ◽  
Author(s):  
Alexandre Fürstenberg ◽  
Marc D. Julliard ◽  
Todor G. Deligeorgiev ◽  
Nikolai I. Gadjev ◽  
Aleksey A. Vasilev ◽  
...  
Keyword(s):  
Excited State ◽  
Fluorescence Enhancement ◽  
Excited State Dynamics ◽  
Enhancement Mechanism ◽  
Insight Into

Aggregation-induced emission enhancement upon Al3+ complexation with a tetrasulfonated calix[4]bisazacrown fluorescent molecular sensor

2014 ◽  
Vol 12 (25) ◽  
pp. 4335-4341 ◽  
Author(s):  
Yi-Bin Ruan ◽  
Alexis Depauw ◽  
Isabelle Leray
Keyword(s):  
Fluorescence Enhancement ◽  
Water Soluble ◽  
Aggregation Induced Emission ◽  
Enhancement Mechanism ◽  
Molecular Sensor ◽  
Emission Enhancement ◽  
Ratiometric Detection ◽  
Soluble Ligand

A new water-soluble ligand bearing a tetrasulfonated calix[4]arene was constructed for ratiometric detection of Al3+ based on an aggregation-induced fluorescence enhancement mechanism.

scholarly journals Surface-Enhanced Raman Scattering and Fluorescence on Gold Nanogratings

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 776 ◽  
Author(s):  
Yu-Chung Chang ◽  
Bo-Han Huang ◽  
Tsung-Hsien Lin
Keyword(s):  
Thin Film ◽  
Raman Scattering ◽  
Fluorescence Enhancement ◽  
Surface Enhanced Raman Scattering ◽  
Simple Method ◽  
Enhancement Mechanism ◽  
Gold Thin Film ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Surface-enhanced Raman scattering (SERS) spectroscopy is a sensitive sensing technique. It is desirable to have an easy method to produce SERS-active substrate with reproducible and robust signals. We propose a simple method to fabricate SERS-active substrates with high structural homogeneity and signal reproducibility using electron beam (E-beam) lithography without the problematic photoresist (PR) lift-off process. The substrate was fabricated by using E-beam to define nanograting patterns on the photoresist and subsequently coat a layer of gold thin film on top of it. Efficient and stable SERS signals were observed on the substrates. In order to investigate the enhancement mechanism, we compared the signals from this substrate with those with photoresist lifted-off, which are essentially discontinuous gold stripes. While both structures showed significant grating-period-dependent fluorescence enhancement, no SERS signal was observed on the photoresist lifted-off gratings. Only transverse magnetic (TM)-polarized excitation exhibited strong enhancement, which revealed its plasmonic attribution. The fluorescence enhancement showed distinct periodic dependence for the two structures, which is due to the different enhancement mechanism. We demonstrate using this substrate for specific protein binding detection. Similar periodicity dependence was observed. Detailed theoretical and experimental studies were performed to investigate the observed phenomena. We conclude that the excitation of surface plasmon polaritons on the continuous gold thin film is essential for the stable and efficient SERS effects.

On the fluorescence enhancement mechanism of Er3+in germanate glass containing silver particles

2013 ◽  
Vol 22 (2) ◽  
pp. 023202 ◽  
Author(s):  
Xiang-Ping Li ◽  
Bao-Jiu Chen ◽  
Ren-Sheng Shen ◽  
Jin-Su Zhang ◽  
Jia-Shi Sun ◽  
...  
Keyword(s):  
Fluorescence Enhancement ◽  
Silver Particles ◽  
Germanate Glass ◽  
Enhancement Mechanism

Fluorescence enhancement mechanism of thymolphthalein-based probe by coordination interaction with zinc ion

2021 ◽  
pp. 116275
Author(s):  
Jin-Dou Huang ◽  
Shibo Cheng ◽  
Wenliang Li ◽  
Feng Lin ◽  
Huipeng Ma ◽  
...  
Keyword(s):  
Fluorescence Enhancement ◽  
Zinc Ion ◽  
Coordination Interaction ◽  
Enhancement Mechanism

Pilot-scale combustion studies with kraft lignin in a powder burner and a CFB boiler

TAPPI Journal ◽  
2010 ◽  
Vol 9 (6) ◽  
pp. 24-30 ◽  
Author(s):  
NIKLAS BERGLIN ◽  
PER TOMANI ◽  
HASSAN SALMAN ◽  
SOLVIE HERSTAD SVÄRD ◽  
LARS-ERIK ÅMAND
Keyword(s):  
Circulating Fluidized Bed ◽  
Black Liquor ◽  
Chloride Content ◽  
Pilot Scale ◽  
High Energy ◽  
Kraft Lignin ◽  
High Energy Density ◽  
Alkali Chloride ◽  
Cfb Boiler ◽  
Solid Biofuel

Processes have been developed to produce a solid biofuel with high energy density and low ash content from kraft lignin precipitated from black liquor. Pilot-scale tests of the lignin biofuel were carried out with a 150 kW powder burner and a 12 MW circulating fluidized bed (CFB) boiler. Lignin powder could be fired in a powder burner with good combustion performance after some trimming of the air flows to reduce swirl. Lignin dried to 10% moisture content was easy to feed smoothly and had less bridging tendencies in the feeding system than did wood/bark powder. In the CFB boiler, lignin was easily handled and cofired together with bark. Although the filter cake was broken into smaller pieces and fines, the combustion was not disturbed. When cofiring lignin with bark, the sulfur emission increased compared with bark firing only, but most of the sulfur was captured by calcium in the bark ash. Conventional sulfur capture also occurred with addition of limestone to the bed. The sulfur content in the lignin had a significantly positive effect on reducing the alkali chloride content in the deposits, thus reducing the high temperature corrosion risk.

A Photoactivable Formaldehyde Donor with Fluorescence Monitoring Reveals Threshold to Arrest Cell Migration

2019 ◽  
Author(s):  
Lukas P Smaga ◽  
Nicholas W Pino ◽  
Gabriela E Ibarra ◽  
Vishnu Krishnamurthy ◽  
Jefferson Chan
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Fluorescence Enhancement ◽  
Biological Effects ◽  
Cellular Systems ◽  
Live Cells ◽  
First Report ◽  
Cell Lysate ◽  
Intracellular Release ◽  
Biological Analytes

Controlled light-mediated delivery of biological analytes enables the investigation of highly reactivity molecules within cellular systems. As many biological effects are concentration dependent, it is critical to determine the location, time, and quantity of analyte donation. In this work, we have developed the first photoactivatable donor for formaldehyde (FA). Our optimized photoactivatable donor, photoFAD-3, is equipped with a fluorescence readout that enables monitoring of FA release with a concomitant 139-fold fluorescence enhancement. Tuning of photostability and cellular retention enabled quantification of intracellular FA release through cell lysate calibration. Application of photoFAD-3 uncovered the concentration range necessary for arresting wound healing in live cells. This marks the first report where a photoactivatable donor for any analyte has been used to quantify intracellular release.

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