Apparent acidity constant in the excited state: evidence for the absence of excited-state prototropic equilibrium in 4-(9-anthryl)-N,N-dimethylaniline

1985 ◽  
Vol 89 (20) ◽  
pp. 4302-4306 ◽  
Author(s):  
Haruo Shizuka ◽  
Toshiaki Ogiwara ◽  
Ehichi Kimura
Keyword(s):  
Excited State ◽  
Acidity Constant ◽  
Prototropic Equilibrium

Modulation in the acidity constant of acridine dye with cucurbiturils: stimuli-responsive pKa tuning and dye relocation into live cells

2017 ◽  
Vol 15 (39) ◽  
pp. 8448-8457 ◽  
Author(s):  
R. Khurana ◽  
N. Barooah ◽  
A. C. Bhasikuttan ◽  
J. Mohanty
Keyword(s):  
Excited State ◽  
Live Cells ◽  
Acidity Constant ◽  
Stimuli Responsive

Cucurbit[7/8]uril–acridine complexes result in striking modulation of the excited state properties of acridine and allowed a tunable upward pKa shift, which is applied for controlled relocation of the dye from the host to live cells.

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.

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