Position of the Benzene Ring Substituent Regulates the Excited-State Deactivation Process of the Benzyluracil Systems

2020 ◽  
Author(s):  
Li Zhao ◽  
Haixia Zheng ◽  
Kaiyun Zhan ◽  
Yahui Guo ◽  
Bing Liu ◽  
...  
Keyword(s):  
Excited State ◽  
Benzene Ring ◽  
Ring Substituent ◽  
Deactivation Process

Oxygen-Dependent Regulation of Excited-State Deactivation Process of Rational Photosensitizer for Smart Phototherapy

2019 ◽  
Vol 142 (3) ◽  
pp. 1510-1517 ◽  
Author(s):  
Xueze Zhao ◽  
Saran Long ◽  
Mingle Li ◽  
Jianfang Cao ◽  
Yachen Li ◽  
...  
Keyword(s):  
Excited State ◽  
Deactivation Process

scholarly journals Excited-state proton transfer in protonated adrenaline revealed by cryogenic UV photodissociation spectroscopy

2020 ◽  
Vol 22 (20) ◽  
pp. 11498-11507
Author(s):  
Jordan Dezalay ◽  
Michel Broquier ◽  
Satchin Soorkia ◽  
Keisuke Hirata ◽  
Shun-ichi Ishiuchi ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Excited State Proton Transfer ◽  
Deactivation Process

Excited state proton transfer is the main non radiative deactivation process in protonated adrenaline.

Radiationless Deactivation Process of 1-Dimethylamino-9-fluorenone Induced by Conformational Relaxation in the Excited State: A New Model Molecule for the TICT Process

2002 ◽  
Vol 106 (43) ◽  
pp. 10089-10095 ◽  
Author(s):  
Akimitsu Morimoto ◽  
László Biczók ◽  
Tomoyuki Yatsuhashi ◽  
Tetsuya Shimada ◽  
Shingo Baba ◽  
...  
Keyword(s):  
Excited State ◽  
New Model ◽  
Conformational Relaxation ◽  
Model Molecule ◽  
Deactivation Process

scholarly journals Ultrafast broadband nonlinear optical properties and excited-state dynamics of two bis-chalcone derivatives

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15199-15205
Author(s):  
Lei Shen ◽  
Zhongguo Li ◽  
Xingzhi Wu ◽  
Wenfa Zhou ◽  
Junyi Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Benzene Ring ◽  
Absorption Spectra ◽  
Nonlinear Optical ◽  
Excited State Absorption ◽  
Nonlinear Optical Properties ◽  
Excited State Dynamics ◽  
Chalcone Derivatives

The introduction of a benzene ring largely affects the excited-state absorption spectra and dynamics of these chromophores.

The excited state antiaromatic benzene ring: a molecular Mr Hyde?

2015 ◽  
Vol 44 (18) ◽  
pp. 6472-6493 ◽  
Author(s):  
Raffaello Papadakis ◽  
Henrik Ottosson
Keyword(s):  
Excited State ◽  
Benzene Ring ◽  
Excited States ◽  
Benzene Derivatives

Baird's rule tells that benzene is an antiaromatic “Mr Hyde” in its lowest excited states, explaining many photoreactions of benzene derivatives.

Intramolecular interactions in the excited state of vinyl aryl ethers with donor and acceptor substituents in the benzene ring

1982 ◽  
Vol 18 (1) ◽  
pp. 34-45
Author(s):  
G. V. Ratovskii ◽  
T. I. Rozova ◽  
P. I. Grebneva ◽  
A. V. Kalabina
Keyword(s):  
Excited State ◽  
Benzene Ring ◽  
Intramolecular Interactions ◽  
Donor And Acceptor ◽  
Aryl Ethers

Renilla Bioluminescence: A Morphologic Approach to the Location of Photocytes

1974 ◽  
Vol 32 ◽  
pp. 208-209
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier
Keyword(s):  
Excited State ◽  
Ground State ◽  
Molecular Basis ◽  
Light Emission ◽  
Chemical Basis ◽  
Electronic Excited State ◽  
Colonial Form ◽  
The Common ◽  
Eighteenth And Nineteenth Centuries ◽  
Catalyzed Oxidation

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.

Electron Microscopic and Isozyme Study of a Case of Ochronosis

1972 ◽  
Vol 30 ◽  
pp. 88-89
Author(s):  
Jay W. Cha ◽  
Perry J. Melnick
Keyword(s):  
Benzene Ring ◽  
Enzyme System ◽  
Homogentisic Acid ◽  
Degenerative Changes ◽  
Acid Oxidase ◽  
Electron Microscopic ◽  
Tyrosine Metabolism ◽  
Collagenous Tissues

Hereditary ochronosis in very few cases has been examined electron microscopically or histochemically. In this disease homogentisic acid, a normal intermediary of tyrosine metabolism, forms in excessive amounts. This is believed to be due to absence or defective activity of homogentisic acid oxidase, an enzyme system necessary to break the benzene ring and to further break it down to fumaric and acetoacetic acids. Ochronotic pigment, a polymerized form of homogentisic acid, deposits mainly in mesenchymal tissues. There has been a question whether the pigment originates from the collagenous tissues, or deposits passively, where in contrast to melanin it induces degenerative changes.

Sign in / Sign up

Export Citation Format

Share Document