Radical scavenging and excited state quenching efficiency of additives in the photochemistry of acetone

1987 ◽  
Vol 40 (1) ◽  
pp. 31-45 ◽  
Author(s):  
G. Lendvay ◽  
T. Bérces
Keyword(s):  
Excited State ◽  
Radical Scavenging ◽  
Quenching Efficiency ◽  
Excited State Quenching

scholarly journals Overtone Vibrational Transition-Induced Lanthanide Excited-State Quenching in Yb3+/Er3+-Doped Upconversion Nanocrystals

ACS Nano ◽  
2018 ◽  
Vol 12 (11) ◽  
pp. 10572-10575 ◽  
Author(s):  
Bingru Huang ◽  
Jan Bergstrand ◽  
Sai Duan ◽  
Qiuqiang Zhan ◽  
Jerker Widengren ◽  
...  
Keyword(s):  
Excited State ◽  
Vibrational Transition ◽  
Upconversion Nanocrystals ◽  
Excited State Quenching

scholarly journals Reply to “Overtone Vibrational Transition-Induced Lanthanide Excited-State Quenching in Yb3+/Er3+-Doped Upconversion Nanocrystals”

ACS Nano ◽  
2018 ◽  
Vol 12 (11) ◽  
pp. 10576-10577 ◽  
Author(s):  
Freddy T. Rabouw ◽  
P. Tim Prins ◽  
Pedro Villanueva-Delgado ◽  
Marieke Castelijns ◽  
Robin G. Geitenbeek ◽  
...  
Keyword(s):  
Excited State ◽  
Vibrational Transition ◽  
Upconversion Nanocrystals ◽  
Excited State Quenching

scholarly journals Free Radical Mediated Oxidative Degradation of Carotenes and Xanthophylls

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1038 ◽  
Author(s):  
Raphael C. Mordi ◽  
Olabisi T. Ademosun ◽  
Christiana O. Ajanaku ◽  
Ifedolapo O. Olanrewaju ◽  
John C. Walton
Keyword(s):  
Excited State ◽  
Free Radical ◽  
Vitamin A ◽  
Molecular Oxygen ◽  
Oxidative Degradation ◽  
Chain Structure ◽  
Ring Structure ◽  
Peroxyl Radicals ◽  
Chemical Structures ◽  
Excited State Quenching

This article reviews the excited-state quenching, pro-vitamin A activity and anticarcinogenicity of carotenes and xanthophylls in relation to their chemical structures. Excited-state quenching improved with the length of the conjugated chain structure. Pro-vitamin A activity was dependent on the presence of at least one beta-ionyl ring structure. The effectiveness of carotenoids as antioxidants depended on their ability to trap peroxyl radicals with production of resonance-stabilized carotenyl radicals. The products identified from oxidations of carotenes and xanthophylls with molecular oxygen and other oxidizing agents are presented. The free radical-mediated mechanisms that have been proposed to account for the different classes of products are reviewed.

Helicity-Dependent Regiodifferentiation in the Excited-State Quenching and Chiroptical Properties of Inward/Outward Helical Coumarins

2017 ◽  
Vol 23 (59) ◽  
pp. 14797-14805 ◽  
Author(s):  
Arindam Mukhopadhyay ◽  
Tousif Hossen ◽  
Indrajit Ghosh ◽  
Apurba Lal Koner ◽  
Werner M. Nau ◽  
...  
Keyword(s):  
Excited State ◽  
Chiroptical Properties ◽  
Excited State Quenching

Proton and Electron Transfer in the Excited State Quenching of Phenosafranine by Aliphatic Amines†

2007 ◽  
Vol 83 (3) ◽  
pp. 535-541 ◽  
Author(s):  
Martín F. Broglia ◽  
Sonia G. Bertolotti ◽  
Carlos M. Previtali
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Aliphatic Amines ◽  
Excited State Quenching

Intermolecular chiral recognition probed by enantiodifferential excited-state quenching kinetics

1996 ◽  
Vol 9 (5-6) ◽  
pp. 595-606 ◽  
Author(s):  
Tonya Gowl Stockman ◽  
Cynthia A. Klevickis ◽  
G. M. Grisham ◽  
F. S. Richardson
Keyword(s):  
Excited State ◽  
Chiral Recognition ◽  
Excited State Quenching
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