Preparation and Characterization of Rhodamine 6G/Alkyltrimethylammonium/Laponite Hybrid Solid Materials with Higher Emission Quantum Yield

2008 ◽  
Vol 113 (1) ◽  
pp. 415-421 ◽  
Author(s):  
Ryo Sasai ◽  
Takanori Itoh ◽  
Wataru Ohmori ◽  
Hideaki Itoh ◽  
Michiko Kusunoki
Keyword(s):  
Quantum Yield ◽  
Rhodamine 6G ◽  
Solid Materials ◽  
Emission Quantum Yield

scholarly journals A C^N Cycloplatinated(II) Fluorido Complex: Photophysical Studies and Csp3‒F Bond Formation

2020 ◽  
Author(s):  
Jiyun Hu ◽  
Mahshid Nikravesh ◽  
Hamid R. Shahsavari ◽  
Reza Babadi Aghakhanpour ◽  
Arnold L. Rheingold ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Density Functional ◽  
Comparison Study ◽  
High Quantum Yield ◽  
Functional Theory ◽  
Green Area ◽  
Td Dft ◽  
Photophysical Studies ◽  
Emission Quantum Yield

<div>This work reports the synthesis and characterization of a new C^N-based cycloplatinated(II) fluorido complex [Pt(ppy)PPh3)F] involving a Pt‒F bond. The new complex is highly luminescent in green area with a high quantum yield of 94.6% at 77K. A comparison study of the heavier of halogen derivatives reveals a descending emission quantum yield order of F > Cl > Br > I. Time-dependent density functional theory (TD-DFT) calculations ascribe the decreased emission efficiency to the decreasing trend of ILCT transition from F to I, which accounts for the major radiative pathway.</div>

scholarly journals A C^N Cycloplatinated(II) Fluorido Complex: Photophysical Studies and Csp3‒F Bond Formation

2020 ◽  
Author(s):  
Jiyun Hu ◽  
Mahshid Nikravesh ◽  
Hamid R. Shahsavari ◽  
Reza Babadi Aghakhanpour ◽  
Arnold L. Rheingold ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Density Functional ◽  
Comparison Study ◽  
High Quantum Yield ◽  
Functional Theory ◽  
Green Area ◽  
Td Dft ◽  
Photophysical Studies ◽  
Emission Quantum Yield

<div>This work reports the synthesis and characterization of a new C^N-based cycloplatinated(II) fluorido complex [Pt(ppy)PPh3)F] involving a Pt‒F bond. The new complex is highly luminescent in green area with a high quantum yield of 94.6% at 77K. A comparison study of the heavier of halogen derivatives reveals a descending emission quantum yield order of F > Cl > Br > I. Time-dependent density functional theory (TD-DFT) calculations ascribe the decreased emission efficiency to the decreasing trend of ILCT transition from F to I, which accounts for the major radiative pathway.</div>

Highly Fluorescent Au25-xAgx Nanoclusters Protected with Poly(ethylene glycol) - and Zwitterion-Modified Thiolate Ligands

2018 ◽  
Author(s):  
Dinesh Mishra ◽  
Sisi Wang ◽  
Zhicheng Jin ◽  
Eric Lochner ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Small Diameter ◽  
Binding Energies ◽  
Thiolate Ligands ◽  
Nir Emission ◽  
Thiolate Complexes ◽  
Long Lifetime ◽  
Poly Ethylene

<p>We describe the growth and characterization of highly fluorescing, near-infrared-emitting nanoclusters made of bimetallic Au<sub>25-x</sub>Ag<sub>x</sub> cores, prepared using various monothiol-appended hydrophobic and hydrophilic ligands. The reaction uses well-defined triphenylphosphine-protected Au<sub>11</sub> clusters (as precursors), which are reacted with Ag(I)-thiolate complexes. The prepared nanoclusters are small (diameter < 2nm, as characterized by TEM) with emission peak at 760 nm and long lifetime (~12 µs). The quantum yield measured for these materials was 0.3 - 0.4 depending on the ligand. XPS measurements show the presence of both metal atoms in the core, with measured binding energies that agree with reported values for nanocluster materials. The NIR emission combined with high quantum yield, small size and ease of surface functionalization afforded by the coating, make these materials suitable to implement investigations that address fundamental questions and potentially useful for biological sensing and imaging applications.<br></p>

Improving the emission quantum yield in dinuclear Eu(III) and Tb(III) complexes with 2-fluorobenzoate.

2021 ◽  
Author(s):  
Ànnia Tubau ◽  
Laura Rodríguez ◽  
Ariadna L.azaro ◽  
Ramon Vicente ◽  
Merce Font-Bardia
Keyword(s):  
Quantum Yield ◽  
Water Mixture ◽  
Dinuclear Compounds ◽  
Emission Quantum Yield

The reaction of Ln(NO3)2·6H2O salts (Ln = Eu and Tb) with an excess of 2-fluorobenzoic acid (H-2FBz) in ethanol/water mixture allows the isolation of dinuclear compounds of formula [Ln2(-2FBz)4(2FBz)2(H-2FBz)2(H2O)2] (Ln...

scholarly journals Synthesis and characterization of CdSxSe1−xalloy quantum dots with composition-dependent band gaps and paramagnetic properties

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 30002-30011 ◽  
Author(s):  
Yueh-Chi Chung ◽  
Chien-Hsin Yang ◽  
Hao-Wen Zheng ◽  
Ping-Szu Tsai ◽  
Tzong-Liu Wang
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Fluorescence Intensity ◽  
Band Gaps ◽  
Synthesis And Characterization ◽  
Paramagnetic Properties

Both the fluorescence intensity and quantum yield of all the nanocrystals are much enhanced after the CdSxSe1−xQD cores are coated with a ZnS shell.

Measurement of Emission Lifetime Dynamics and Biexciton Emission Quantum Yield of Individual InAs Colloidal Nanocrystals

Nano Letters ◽  
2014 ◽  
Vol 14 (12) ◽  
pp. 6787-6791 ◽  
Author(s):  
Thomas S. Bischof ◽  
Raoul E. Correa ◽  
Danna Rosenberg ◽  
Eric A. Dauler ◽  
Moungi G. Bawendi
Keyword(s):  
Quantum Yield ◽  
Colloidal Nanocrystals ◽  
Emission Lifetime ◽  
Emission Quantum Yield

Lighting up Eu3+ luminescence through remote sensitization in silica nanoarchitectures

2018 ◽  
Vol 6 (28) ◽  
pp. 7479-7486 ◽  
Author(s):  
Flavia Artizzu ◽  
Danilo Loche ◽  
Dimitrije Mara ◽  
Luca Malfatti ◽  
Angela Serpe ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Yield ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
High Emission ◽  
Fast Quenching ◽  
Emission Quantum Yield

Remote sensitization in hybrid organic–inorganic Eu3+-doped layered silica nanoarchitectures allows for unusually high emission quantum yield through efficient energy transfer and the removal of ultra-fast quenching effects of inner-shell emitters.

scholarly journals High Emission Quantum Yield Tb3+ -Activated Organic-Inorganic Hybrids for UV-Down-Shifting Green Light-Emitting Diodes

2020 ◽  
Vol 2020 (18) ◽  
pp. 1736-1742
Author(s):  
Sandra F. H. Correia ◽  
Ricardo L. Fernandes ◽  
Lianshe Fu ◽  
Mariela M. Nolasco ◽  
Luís D. Carlos ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Light Emitting Diodes ◽  
Green Light ◽  
Light Emitting ◽  
High Emission ◽  
Emission Quantum Yield
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