Femtosecond Laser-Induced Size Reduction of Aqueous Gold Nanoparticles: In Situ and Pump−Probe Spectroscopy Investigations Revealing Coulomb Explosion

2011 ◽  
Vol 115 (17) ◽  
pp. 8503-8512 ◽  
Author(s):  
Daniel Werner ◽  
Akihiro Furube ◽  
Toshihiro Okamoto ◽  
Shuichi Hashimoto
Keyword(s):  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Coulomb Explosion ◽  
Size Reduction ◽  
Pump Probe ◽  
Probe Spectroscopy

scholarly journals In-Situ Probing Plasmonic Energy Transfer in Cu(In, Ga)Se2 Solar Cells by Ultrabroadband Femtosecond Pump-Probe Spectroscopy

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Shih-Chen Chen ◽  
Kaung-Hsiung Wu ◽  
Jia-Xing Li ◽  
Atsushi Yabushita ◽  
Shih-Han Tang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Pump Probe ◽  
Probe Spectroscopy

A simple method for the in situ analysis of femtosecond UV pulses in the pump-probe spectroscopy of solutions

1997 ◽  
Vol 141 (3-4) ◽  
pp. 180-184 ◽  
Author(s):  
Achim Reuther ◽  
Alfred Laubereau ◽  
David N Nikogosyan
Keyword(s):  
In Situ Analysis ◽  
Simple Method ◽  
Pump Probe ◽  
Probe Spectroscopy

Direct imaging of single gold nanoparticle etching: sensitive detection of lead ions

2014 ◽  
Vol 6 (13) ◽  
pp. 4507-4511 ◽  
Author(s):  
Dinggui Dai ◽  
Dong Xu ◽  
Xiaodong Cheng ◽  
Yan He
Keyword(s):  
Gold Nanoparticles ◽  
Real Time ◽  
Gold Nanoparticle ◽  
Detection Method ◽  
Size Reduction ◽  
Direct Imaging ◽  
Real Time Imaging ◽  
Highly Sensitive ◽  
Darkfield Microscopy

We present a highly sensitive Pb2+ detection method by in situ real-time imaging of Pb2+ catalyzed etching and size reduction of immobilized single gold nanoparticles with darkfield microscopy.

On-site in situ high-pressure ultrafast pump–probe spectroscopy instrument

2021 ◽  
Vol 92 (11) ◽  
pp. 113002
Author(s):  
Y. L. Wu ◽  
X. Yin ◽  
J. Z. L. Hasaien ◽  
Z. Y. Tian ◽  
Yang Ding ◽  
...  
Keyword(s):  
High Pressure ◽  
Pump Probe ◽  
Probe Spectroscopy

Transient reflectivity changes of β-ZnP2 exciton bands by pump–probe spectroscopy using a femtosecond laser

2004 ◽  
Vol 108 (1-4) ◽  
pp. 201-204 ◽  
Author(s):  
O. Arimoto ◽  
Y. Imai ◽  
S. Nakanishi ◽  
H. Itoh
Keyword(s):  
Femtosecond Laser ◽  
Pump Probe ◽  
Probe Spectroscopy

scholarly journals Easy and fast in-situ functionalization of exfoliated 2D black phosphorus with gold nanoparticles

2021 ◽  
Author(s):  
Salvatore Moschetto ◽  
Andrea Ienco ◽  
Gabriele Manca ◽  
Manuel Serrano-Ruiz ◽  
Maurizio Peruzzini ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Black Phosphorus ◽  
Au Nps ◽  
In Situ Functionalization

Heterostructures of single- and few-layer black phosphorus (2D bP) functionalized with gold nanoparticles (Au NPs) have been recently reported in the literature, exploiting their intriguing properties and biocompatibility for catalytic,...

scholarly journals Ultrafast Electron/Energy Transfer and Intersystem Crossing Mechanisms in BODIPY-Porphyrin Compounds

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 312
Author(s):  
Yusuf Tutel ◽  
Gökhan Sevinç ◽  
Betül Küçüköz ◽  
Elif Akhuseyin Yildiz ◽  
Ahmet Karatay ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Spectra ◽  
Visible Region ◽  
Energy Transfer Mechanism ◽  
Free Base ◽  
Pump Probe ◽  
Harvesting Efficiency ◽  
Probe Spectroscopy ◽  
Absorption Features ◽  
Transfer Mechanisms

Meso-substituted borondipyrromethene (BODIPY)-porphyrin compounds that include free base porphyrin with two different numbers of BODIPY groups (BDP-TTP and 3BDP-TTP) were designed and synthesized to analyze intramolecular energy transfer mechanisms of meso-substituted BODIPY-porphyrin dyads and the effect of the different numbers of BODIPY groups connected to free-base porphyrin on the energy transfer mechanism. Absorption spectra of BODIPY-porphyrin conjugates showed wide absorption features in the visible region, and that is highly valuable to increase light-harvesting efficiency. Fluorescence spectra of the studied compounds proved that BODIPY emission intensity decreased upon the photoexcitation of the BODIPY core, due to the energy transfer from BODIPY unit to porphyrin. In addition, ultrafast pump-probe spectroscopy measurements indicated that the energy transfer of the 3BDP-TTP compound (about 3 ps) is faster than the BDP-TTP compound (about 22 ps). Since the BODIPY core directly binds to the porphyrin unit, rapid energy transfer was seen for both compounds. Thus, the energy transfer rate increased with an increasing number of BODIPY moiety connected to free-base porphyrin.

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