Controlling the Excited-State Reaction Dynamics of a Photochromic Molecular Switch with Sequential Two-Photon Excitation

2012 ◽  
Vol 3 (20) ◽  
pp. 2995-3000 ◽  
Author(s):  
Cassandra L. Ward ◽  
Christopher G. Elles
Keyword(s):  
Excited State ◽  
Reaction Dynamics ◽  
Molecular Switch ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

scholarly journals Two-photon induced isomerization through a cyaninic molecular antenna in azo compounds

2021 ◽  
Author(s):  
Emmanuel Villatoro ◽  
Leonardo Muñoz-Rugeles ◽  
Jesús Durán-Hernández ◽  
Bernardo Salcido-Santacruz ◽  
Nuria Esturau-Escofet ◽  
...  
Keyword(s):  
Excited State ◽  
Excitation Energy ◽  
Energy Migration ◽  
Azo Compounds ◽  
Singlet Excited State ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Upon two photon excitation, energy migration from the antenna-localized second singlet excited state to the stilbenyl-azopyrrole section allows for efficient indirect excitation and phototransformation of this actuator.

scholarly journals Two-photon ESIPT-based fluorescent probe using 4-hydroxyisoindoline-1,3-dione for the detection of peroxynitrite

2021 ◽  
Author(s):  
Luling Wu ◽  
Xue Tian ◽  
Dong Joon Lee ◽  
Juyoung Yoon ◽  
Chang Su Lim ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Fluorescent Probe ◽  
Intramolecular Proton Transfer ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Excited-state intramolecular proton transfer (ESIPT)-based fluorophores with two-photon excitation fluorescence (TPEF) are rare. Our aim with this research was to develop ESITP-based fluorophores exhibiting TPEF. Herein, we used 4-hydroxyisoindoline-1,3-dione as...

Fluorescence Anisotropies of 4-Dimethylamino-ω- diphenylphosphinyl-trans-Styrene in Isotropic Media in the Case of One-and Two-Photon Excitation

1993 ◽  
Vol 48 (4) ◽  
pp. 551-556 ◽  
Author(s):  
A. Kawski ◽  
J. Gryczyński ◽  
Z. Gryczyński
Keyword(s):  
Excited State ◽  
Rotational Diffusion ◽  
Fluorescence Emission ◽  
Excited State Lifetime ◽  
Two Photon ◽  
Photon Excitation ◽  
Isotropic Media ◽  
Different Temperatures ◽  
Initial Shock ◽  
Two Photon Excitation

Abstract Fluorescence emission anisotropies, r, and mean lifetimes of 4-dimethylamino-ω-diphenylphosphinyl-trans-styrene (DDPS) were measured in n-butanol at different temperatures from 20 to 80 °C for one-and two-photon excitation. When increasing the temperature, the lifetime decreased from 32 to 12 ps, the r values, however, remained constant (0.315 and 0.445 for one-and two-photon excitation, respectively) and were found to be temperature independent. For DDPS in glycerol at - 5°C, where rotational diffusion does not occur during the excited state lifetime, the limiting emission anisotropies were r0 = 0.382 and r0 = 0.545 for one-and two-photon excitation, respectively, very little differing from the fundamental emission anisotropies rf = 2/5 and rf = 4/7. The small differences rf - r0 can be due to vibrations performed after excitation by the DDPS molecule as a result of the initial shock.

scholarly journals Excited state dynamics of liquid water: Insight from the dissociation reaction following two-photon excitation

2007 ◽  
Vol 126 (16) ◽  
pp. 164503 ◽  
Author(s):  
Christopher G. Elles ◽  
Ilya A. Shkrob ◽  
Robert A. Crowell ◽  
Stephen E. Bradforth
Keyword(s):  
Excited State ◽  
Liquid Water ◽  
Dissociation Reaction ◽  
Excited State Dynamics ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Two-photon excitation and excited-state absorption cross sections forH2E,FΣg1(v=6): Measurement and calculations

1989 ◽  
Vol 39 (8) ◽  
pp. 3932-3941 ◽  
Author(s):  
Jesse D. Buck ◽  
Daniel C. Robie ◽  
A. P. Hickman ◽  
Douglas J. Bamford ◽  
William K. Bischel
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation
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