scholarly journals Radical pairs with rotational fluidity in the photochemical reaction of acetophenone and cyclohexane in the zeolite NAY: a 13C CPMAS NMR and product analysis study

2009 ◽  
Vol 7 (11) ◽  
pp. 2322 ◽  
Author(s):  
Ammee Amboya ◽  
Tina Nguyen ◽  
Hien T. Huynh ◽  
Ashley Brown ◽  
Gretchen Ratliff ◽  
...  
Keyword(s):  
Photochemical Reaction ◽  
Product Analysis ◽  
Radical Pairs ◽  
13C Cpmas Nmr ◽  
Analysis Study ◽  
Zeolite Nay

Diffusion and percolation of radical pairs in zeolite media. A product analysis study

1991 ◽  
Vol 113 (16) ◽  
pp. 6212-6218 ◽  
Author(s):  
M. A. Garcia-Garibay ◽  
Z. Zhang ◽  
Nicholas J. Turro
Keyword(s):  
Product Analysis ◽  
Radical Pairs ◽  
Analysis Study

Hydroxylation of Chlorotoluenes and Cresols: A Pulse Radiolysis, Laser Flash Photolysis, and Product Analysis Study

1997 ◽  
Vol 101 (51) ◽  
pp. 9837-9845 ◽  
Author(s):  
S. C. Choure ◽  
M. M. M. Bamatraf ◽  
B. S. M. Rao ◽  
Ranjan Das ◽  
H. Mohan ◽  
...  
Keyword(s):  
Pulse Radiolysis ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Product Analysis ◽  
Analysis Study

On the photolysis of phthalic acid dialkyl esters: a product analysis study

1993 ◽  
Vol 72 (2) ◽  
pp. 147-152 ◽  
Author(s):  
G. Hizal ◽  
Q.Q. Zhu ◽  
Ch.-H. Fischer ◽  
P.M. Fritz ◽  
W. Schnabel
Keyword(s):  
Phthalic Acid ◽  
Product Analysis ◽  
Analysis Study

Reaction of .alpha.-hydroxyalkyl radicals and their anions with oxidized dithiothreitol: a pulse radiolysis and product analysis study

1989 ◽  
Vol 93 (10) ◽  
pp. 4331-4334 ◽  
Author(s):  
M. Shahid Akhlaq ◽  
Cherla P. Murthy ◽  
Steen Steenken ◽  
Clemens Von Sonntag
Keyword(s):  
Pulse Radiolysis ◽  
Product Analysis ◽  
Analysis Study ◽  
Hydroxyalkyl Radicals

scholarly journals Revisit of the Photoirradiation of α-Lipoic Acid—Role of Hydrogen Sulfide Produced in the Reaction

BioChem ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 148-158
Author(s):  
Naoki Wada ◽  
Seiichi Matsugo
Keyword(s):  
Hydrogen Sulfide ◽  
Lipoic Acid ◽  
Photochemical Reaction ◽  
Dimethyl Disulfide ◽  
Polymeric Materials ◽  
Reduced Form ◽  
Product Analysis ◽  
Plausible Mechanism ◽  
Ph Dependent

α-Lipoic acid (LA) has the specific absorption band at 330 nm and is quite vulnerable to UV irradiation, affording a variety of compounds including polymeric materials and hydrogen sulfide. A better understanding of the photochemical reaction of LA has already been carried out focusing mainly on the reaction product analysis derived from LA. We re-investigated the photochemical reaction of LA focusing our attention on the fate of hydrogen sulfide (H2S) produced in the photochemical reaction procedure. The photoirradiation of LA in the presence of oxidized glutathione (GSSG) formed glutathione trisulfide (GSSSG) and a reduced form of glutathione (GSH). Similar results were obtained in the co-presence of cystine and dimethyl disulfide. The concentration of H2S was reaching the maximum concentration, which was gradually decreasing within 10 min after photoirradiation, while the concentration of GSSSG was increasing with the decrease of H2S concentration. The structural confirmation of GSSSG and the plausible mechanism for the formation of GSSSG are proposed based on the time-dependent and pH-dependent profile of the photoirradiation.

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