scholarly journals Rapid and efficient pesticide detection via cyclodextrin-promoted energy transfer

The Analyst ◽  
2015 ◽  
Vol 140 (22) ◽  
pp. 7503-7507 ◽  
Author(s):  
Nicole Serio ◽  
John Roque ◽  
Andrew Badwal ◽  
Mindy Levine
Keyword(s):  
Energy Transfer ◽  
Quantum Yield ◽  
Detection Limits ◽  
Sensitive Detection ◽  
Fluorescence Energy Transfer ◽  
High Quantum Yield ◽  
Pesticide Detection ◽  
Detection Scheme ◽  
High Quantum ◽  
Fluorescence Energy

Cyclodextrins facilitate non-covalent fluorescence energy transfer from a variety of pesticides to high quantum-yield fluorophores, resulting in a rapid, sensitive detection scheme for these compounds with detection limits as low as two micromolar.

An ultra-high quantum yield Tb-MOF with phenolic hydroxyl as the recognition group for a highly selective and sensitive detection of Fe3+

2021 ◽  
Author(s):  
Yuming Zhao ◽  
Xu Zhai ◽  
Lei Shao ◽  
Linlin Li ◽  
Yunling Liu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Phenolic Hydroxyl ◽  
Sensitive Detection ◽  
High Quantum Yield ◽  
High Quantum

An ultra-high quantum yield Tb-MOF with phenolic hydroxyl as the recognition group for a highly selective and sensitive detection of Fe3+.

Intramolecular fluorescence energy transfer in nitrobenzoxadiazole derivatives of polyene antibiotics

1985 ◽  
Vol 63 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Nils O. Petersen
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Quantum Yield ◽  
Spectroscopic Properties ◽  
Fluorescence Energy Transfer ◽  
Polyene Antibiotics ◽  
Weak Symmetry ◽  
Linear Polyenes ◽  
Parinaric Acid ◽  
Fluorescence Energy

Spectroscopic properties of the polyene antibiotic Nystatin and its nitrobenzoxadiazole derivative have been characterized by lifetime and quantum yield measurements. The data suggest that Nystatin and other polyene antibiotics exhibit spectral features common to other linear polyenes such as diphenylhexatriene and parinaric acid, and support the conclusion that the strong absorption (εmax ~70 000 M−1 cm−1; λ = 306 nm) is due to a symmetry-allowed transition to a higher excited state while the red-shifted emission occurs from a lower lying excited state through a weak, symmetry-forbidden transition.Nitrobenzoxadiazole derivatives also exhibit efficient intramolecular fluorescence energy transfer from the polyene chromophore to the nitrobenzoxadiazole chromophore (λcm = 535 nm). The lifetime and quantum yield measurements suggest that the predominant mechanism of energy transfer is via a Dexter type transfer in a fraction of molecules with appropriate conformations.

Superior Stable and High Quantum Yield Phosphor Na2BaSr(PO4)2: Eu2+ for Plant Growth LEDs

2021 ◽  
Author(s):  
Jinmeng Xiang ◽  
Xiaoqi Zhao ◽  
Hao Suo ◽  
Minkun Jin ◽  
Xue Zhou ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Plant Growth ◽  
Light Emitting Diodes ◽  
Light Environment ◽  
High Quantum Yield ◽  
Light Emitting ◽  
Growth Rhythm ◽  
High Quantum ◽  
Violet Light ◽  
Important Means

Controlling the light environment of plant growth using phosphor-converted light-emitting diodes (pc-LEDs) is an important means to regulate the growth rhythm and enhance the yield, in which bluish violet light...

scholarly journals Heavily Eu2O3-doped yttria-aluminoborate glasses for red photoconversion with a high quantum yield: luminescence quenching and statistics of cluster formation

2014 ◽  
Vol 2 (41) ◽  
pp. 8678-8682 ◽  
Author(s):  
Guojun Gao ◽  
Jingxue Wei ◽  
Yang Shen ◽  
Mingying Peng ◽  
Lothar Wondraczek
Keyword(s):  
Quantum Yield ◽  
Doping Concentration ◽  
Statistical Approach ◽  
Cluster Formation ◽  
Luminescence Quenching ◽  
High Quantum Yield ◽  
Photoluminescence Quenching ◽  
High Quantum

We employ a statistical approach to estimate the number of photoluminescence quenching species as a function of doping concentration.

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