scholarly journals Giant Increase in the Metal-Enhanced Fluorescence of Organic Molecules in Nanoporous Alumina Templates and Large Molecule-Specific Red/Blue-Shift of the Fluorescence Peak

Nano Letters ◽  
2014 ◽  
Vol 14 (10) ◽  
pp. 5973-5978 ◽  
Author(s):  
S. Sarkar ◽  
B. Kanchibotla ◽  
J. D. Nelson ◽  
J. D. Edwards ◽  
J. Anderson ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Blue Shift ◽  
Large Molecule ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
Nanoporous Alumina ◽  
Nanoporous Alumina Templates ◽  
Fluorescence Peak

scholarly journals Single Molecule Techniques Can Distinguish the Photophysical Processes Governing Metal-Enhanced Fluorescence

2022 ◽  
Author(s):  
Stefania Impellizzeri ◽  
Gregory J, Hodgson ◽  
Nicholas P. Dogantzis
Keyword(s):  
Single Molecule ◽  
Organic Molecules ◽  
Near Field ◽  
Comprehensive Understanding ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
Maximum Enhancement ◽  
Molecular Systems ◽  
Photophysical Processes ◽  
Underlying Processes

<p>Plasmonic metal nanoparticles can impact the behaviour of organic molecules in a number of ways, including enhancing or quenching fluorescence. Only through a comprehensive understanding of the fundamental photophysical processes regulating nano-molecular interactions can these effects be controlled, and exploited to the fullest extent possible. Metal-enhanced fluorescence (MEF) is governed by two underlying processes, increased rate of fluorophore excitation and increased fluorophore emission, the balance between which has implications for optimizing hybrid nanoparticle-molecular systems for various applications. We report groundbreaking work on the use of single molecule fluorescence microscopy to distinguish between the two mechanistic components of MEF, in a model system consisting of two analogous boron dipyrromethene (BODIPY) fluorophores and triangular silver nanoparticles (AgNP). We demonstrate that the increased excitation MEF mechanism occurs to approximately the same extent for both dyes, but that the BODIPY with the higher quantum yield of fluorescence experiences a greater degree of MEF via the increased fluorophore emission mechanism, and higher overall enhancement, as a result of its superior ability to undergo near-field interactions with AgNP. We foresee that this knowledge and methodology will be used to tailor MEF to meet the needs of different applications, such as those requiring maximum enhancement of fluorescence intensity or instead prioritizing excited-state photochemistry. </p>

scholarly journals Single Molecule Techniques Can Distinguish the Photophysical Processes Governing Metal-Enhanced Fluorescence

2022 ◽  
Author(s):  
Stefania Impellizzeri ◽  
Gregory J, Hodgson ◽  
Nicholas P. Dogantzis
Keyword(s):  
Single Molecule ◽  
Organic Molecules ◽  
Near Field ◽  
Comprehensive Understanding ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
Maximum Enhancement ◽  
Molecular Systems ◽  
Photophysical Processes ◽  
Underlying Processes

<p>Plasmonic metal nanoparticles can impact the behaviour of organic molecules in a number of ways, including enhancing or quenching fluorescence. Only through a comprehensive understanding of the fundamental photophysical processes regulating nano-molecular interactions can these effects be controlled, and exploited to the fullest extent possible. Metal-enhanced fluorescence (MEF) is governed by two underlying processes, increased rate of fluorophore excitation and increased fluorophore emission, the balance between which has implications for optimizing hybrid nanoparticle-molecular systems for various applications. We report groundbreaking work on the use of single molecule fluorescence microscopy to distinguish between the two mechanistic components of MEF, in a model system consisting of two analogous boron dipyrromethene (BODIPY) fluorophores and triangular silver nanoparticles (AgNP). We demonstrate that the increased excitation MEF mechanism occurs to approximately the same extent for both dyes, but that the BODIPY with the higher quantum yield of fluorescence experiences a greater degree of MEF via the increased fluorophore emission mechanism, and higher overall enhancement, as a result of its superior ability to undergo near-field interactions with AgNP. We foresee that this knowledge and methodology will be used to tailor MEF to meet the needs of different applications, such as those requiring maximum enhancement of fluorescence intensity or instead prioritizing excited-state photochemistry. </p>

Metal-enhanced fluorescence from tin nanostructured surfaces

2010 ◽  
Vol 107 (2) ◽  
pp. 024302 ◽  
Author(s):  
Yongxia Zhang ◽  
Anatoliy Dragan ◽  
Chris D. Geddes
Keyword(s):  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
Nanostructured Surfaces

UV-Trained and Metal-Enhanced Fluorescence of Biliverdin and Biliverdin Nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Parinaz Fathi ◽  
Ayman Roslend ◽  
Kritika Mehta ◽  
Parikshit Moitra ◽  
Kai Zhang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Biomedical Imaging ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence

Increasing the fluorescence quantum yield of fluorophores is of great interest for in vitro and in vivo biomedical imaging applications. At the same time, photobleaching and photodegradation resulting from continuous...

Polymer nanopillars using self-ordered nanoporous alumina templates

2009 ◽  
Vol 6 (7) ◽  
pp. 1584-1586 ◽  
Author(s):  
R. Palacios ◽  
P. Formentín ◽  
J. Ferré-Borrull ◽  
J. Pallarés ◽  
L. F. Marsal
Keyword(s):  
Nanoporous Alumina ◽  
Nanoporous Alumina Templates

EDLC characteristics of CNTs grown on nanoporous alumina templates

2004 ◽  
Vol 50 (2-3) ◽  
pp. 857-862 ◽  
Author(s):  
Mi Jung ◽  
Hyun-Gi Kim ◽  
Jae-Kyoung Lee ◽  
Oh-Shim Joo ◽  
Sun-il Mho
Keyword(s):  
Nanoporous Alumina ◽  
Nanoporous Alumina Templates

scholarly journals Artificial pinning centers using the barrier layer of ordered nanoporous alumina templates

2009 ◽  
Vol 153 ◽  
pp. 012013
Author(s):  
X Hallet ◽  
S Mátéfi-Tempfli ◽  
M Mátéfi-Tempfli ◽  
S Michotte ◽  
L Piraux ◽  
...  
Keyword(s):  
Barrier Layer ◽  
Pinning Centers ◽  
Nanoporous Alumina ◽  
Artificial Pinning Centers ◽  
Nanoporous Alumina Templates
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