Spectroscopic properties of laser-type solid state materials. evidence of nonequivalent centers, excited state dynamics, and energy transfer processes in garnets

1992 ◽  
Vol 130 (2) ◽  
pp. K91-K97
Author(s):  
A. Brenier ◽  
A. Monteil ◽  
CH. Pédrini ◽  
A. Suchocki ◽  
G. Boulon
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Solid State ◽  
Spectroscopic Properties ◽  
Excited State Dynamics ◽  
Transfer Processes ◽  
Solid State Materials

Synthesis and properties of diads based on tetra-aryl porphyrins and ruthenium bis-terpyridine-type complexes

2001 ◽  
Vol 05 (07) ◽  
pp. 600-607 ◽  
Author(s):  
ISABELLE M. DIXON ◽  
JEAN-PAUL COLLIN
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Fluorescence Quenching ◽  
Emission Spectra ◽  
Spectroscopic Properties ◽  
Free Base ◽  
Strong Electron ◽  
Transfer Processes ◽  
C Complex

Four diads consisting of a free-base or zinc aryl-porphyrin associated with two ruthenium(II) bis(terdentate) complexes (non-cyclometallated Ru ( N 6) or cylometallated Ru ( N 5 C )) have been synthesized. The strong electron-withdrawing properties of the Ru ( N 6) as compared to the Ru ( N 5 C ) complex have been illustrated by their electrochemical and spectroscopic properties. Emission spectra of the diads and the reference compounds have shown that very efficient fluorescence quenching occurs, probably by energy transfer processes from the porphyrin to the 3MLCT excited state of the ruthenium unit.

Excited state dynamics and energy transfer processes in YVO4:Er3+ crystals

1997 ◽  
Vol 82 (8) ◽  
pp. 3983-3986 ◽  
Author(s):  
P. Kabro ◽  
J. A. Capobianco ◽  
F. S. Ermeneux ◽  
R. Moncorgé ◽  
M. Bettinelli ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Excited State Dynamics ◽  
Transfer Processes

Photoresponsive Frameworks: Energy Transfer in the Spotlight

2021 ◽  
Author(s):  
Corey R. Martin ◽  
Kyoung Chul Park ◽  
Ryan E. Corkill ◽  
Preecha Kittikhunnatham ◽  
Gabrielle A. Leith ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Covalent Organic Frameworks ◽  
Photochromic Behavior ◽  
Solid State Materials

In this paper, spiropyran-containing metal- and covalent-organic frameworks (MOFs and COFs, respectively) are probed as platforms for fostering photochromic behavior in solid-state materials while simultaneously promoting directional energy transfer (ET)....

scholarly journals Construction of Vibronic Diabatic Hamiltonian for Excited-State Electron and Energy Transfer Processes

2017 ◽  
Vol 121 (50) ◽  
pp. 9567-9578 ◽  
Author(s):  
Yu Xie ◽  
Shengshi Jiang ◽  
Jie Zheng ◽  
Zhenggang Lan
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Transfer Processes ◽  
State Electron

scholarly journals Assembly and Redox-Rich Hydride Chemistry of an Asymmetric Mo2S2 Platform

Molecules ◽  
2020 ◽  
Vol 25 (13) ◽  
pp. 3090
Author(s):  
Alex McSkimming ◽  
Jordan W. Taylor ◽  
W. Hill Harman
Keyword(s):  
Electron Transfer ◽  
Solid State ◽  
Dft Calculations ◽  
Spectroscopic Properties ◽  
Molybdenum Sulfide ◽  
Proton Reduction ◽  
Hydride Complex ◽  
Transfer Processes ◽  
Electron Transfer Processes ◽  
Synthesis Reactions

Although molybdenum sulfide materials show promise as electrocatalysts for proton reduction, the hydrido species proposed as intermediates remain poorly characterized. We report herein the synthesis, reactions and spectroscopic properties of a molybdenum-hydride complex featuring an asymmetric Mo2S2 core. This molecule displays rich redox chemistry with electrochemical couples at E½ = −0.45, −0.78 and −1.99 V vs. Fc/Fc+. The corresponding hydrido-complexes for all three redox levels were isolated and characterized crystallographically. Through an analysis of solid-state bond metrics and DFT calculations, we show that the electron-transfer processes for the two more positive couples are centered predominantly on the pyridinediimine supporting ligand, whereas for the most negative couple electron-transfer is mostly Mo-localized.

Spectroscopy and excited state dynamics of nearly infinite polyenes

2020 ◽  
Vol 22 (32) ◽  
pp. 17867-17879
Author(s):  
Václav Šebelík ◽  
Miroslav Kloz ◽  
Mateusz Rebarz ◽  
Martin Přeček ◽  
Eun-Hye Kang ◽  
...  
Keyword(s):  
Excited State ◽  
Spectroscopic Properties ◽  
Excited State Dynamics ◽  
Linear Polyenes

The spectroscopic properties of long, constrained, linear polyenes indicate conjugated units with N > 50, approaching the infinite polyene limit.

The electron that breaks the catalyst’s back – excited state dynamics in intermediates of molecular photocatalysts

2021 ◽  
Author(s):  
Carolin Müller ◽  
Ilse Friedländer ◽  
Benedikt Bagemihl ◽  
Sven Rau ◽  
Benjamin Dietzek
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Single Electron ◽  
Intramolecular Electron Transfer ◽  
Excited State Dynamics ◽  
Transfer Processes ◽  
Electron Reduction ◽  
Electron Transfer Processes ◽  
Franck Condon

In situ spectroelectrochemical studies focussing on the Franck-Condon region and sub-ns electron transfer processes in Ru(II)-tpphz-Pt(II) based photocatalysts reveal that single-electron reduction effectively hinders intramolecular electron transfer between the photoexcited...

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