Triplet energies of fumaronitrile and maleonitrile

1982 ◽  
Vol 60 (3) ◽  
pp. 339-341 ◽  
Author(s):  
Po Cheong Wong
Keyword(s):  
Charge Transfer ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Benzene Solution ◽  
Laser Flash ◽  
Transfer Mechanism ◽  
Triplet Energy ◽  
Charge Transfer Mechanism ◽  
A Charge

The triplet energies of fumaronitrile and maleonitrile measured by laser flash photolysis technique using the Herkstroeter–Hammond method are both 59 ± 2 kcal mol−1. Our results show that these olefins are classical triplet energy acceptors for non-electron donating sensitizers. With electron donating sensitizers, quenching through a charge-transfer mechanism also occurs in benzene solution.

A laser flash photolysis study of the behaviour of polyfluorophenyl ketones in solution

1989 ◽  
Vol 67 (5) ◽  
pp. 927-932 ◽  
Author(s):  
D. R. Boate ◽  
L. J. Johnston ◽  
J. C. Scaiano
Keyword(s):  
Charge Transfer ◽  
Hydrogen Transfer ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Oxidation Potential ◽  
Triplet States ◽  
Excellent Correlation ◽  
Triplet Energy ◽  
Keywords Laser

Decafluorobenzophenone triplets, which have a triplet energy very close to that of benzophenone, are much more reactive than benzophenone in quenching reactions that involve hydrogen transfer and/or charge transfer. An excellent correlation has been observed between the rate constants for charge transfer quenching and the oxidation potential of the substrate. In the case of 2-propanol, where the reactivity can be fully accounted for by hydrogen transfer, decafluorobenzophenone is 35 times more reactive than benzophenone. Pentafluorobenzophenone shows intermediate behaviour. Keywords: laser photolysis, benzophenones, triplet states, charge transfer, photoreduction.

A charge transfer mechanism for the colour of rose quartz

1978 ◽  
Vol 46 (2) ◽  
pp. K135-K140 ◽  
Author(s):  
G. Smith ◽  
E. R. Vance ◽  
Z. Hasan ◽  
A. Edgar ◽  
W. A. Runciman
Keyword(s):  
Charge Transfer ◽  
Transfer Mechanism ◽  
Charge Transfer Mechanism ◽  
A Charge

Article

1999 ◽  
Vol 77 (5-6) ◽  
pp. 1066-1076
Author(s):  
Hideo Tomioka ◽  
Junichi Nakajima ◽  
Hidehiko Mizuno ◽  
Eiji Iiba ◽  
Katsuyuki Hirai
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Room Temperature ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Benzene Solution ◽  
Laser Flash ◽  
Spin Resonance ◽  
Structure Reactivity Relationship ◽  
Resonance Laser

A series of triplet 9-triptycyl(aryl)carbenes, where aryl groups are phenyl, 1- and 2-naphthyl, and 9-anthryl, is generated by photolysis of the corresponding diazomethanes and observed directly by spectroscopic means. Their structures are characterized by electron spin resonance (ESR) spectroscopy in a 2-methyltetrahydrofuran matrix at 77 K, and the reactivities are investigated by laser flash photolysis in degassed benzene solution at room temperature. Comparison of the data with other arylcarbenes bearing a series of substituents, i.e., hydrogen, phenyl, naphthyl, and anthryl groups, revealed an interesting relationship between structures and reactivities of triplet arylcarbenes.Key words: steric protection, stability of triplet carbenes, electron spin resonance, laser flash photolysis, structure-reactivity relationship.

Laser flash photolysis of metal oxide supported vanadyl catalysts. Spectroscopic evidence for the ligand-to-metal charge-transfer state

2006 ◽  
Vol 16 (2) ◽  
pp. 216-220 ◽  
Author(s):  
Hermenegildo García ◽  
Jose Manuel López-Nieto ◽  
Emilio Palomares ◽  
Heinz D. Roth ◽  
Benjamín Solsona
Keyword(s):  
Charge Transfer ◽  
Metal Oxide ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Charge Transfer State ◽  
Metal Charge ◽  
Spectroscopic Evidence ◽  
Metal Charge Transfer ◽  
Transfer State

Photochemical transformation of an iron(iii)–arsenite complex in acidic aqueous solution

2016 ◽  
Vol 15 (3) ◽  
pp. 431-439 ◽  
Author(s):  
Ivan P. Pozdnyakov ◽  
Wei Ding ◽  
Jing Xu ◽  
Long Chen ◽  
Feng Wu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Charge Transfer ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Photochemical Transformation ◽  
Acidic Aqueous Solution ◽  
Metal Charge ◽  
Metal Charge Transfer

An Fe(iii)–As(iii) complex was characterized by UV/Vis spectra and its laser flash photolysis via ligand-to-metal charge transfer resulted in the intermediate of Fe(ii)–As(iv).

scholarly journals Laser Flash Photolysis Studies of Copolymers of Phenyl Vinyl Ketone and Vinylnaphthalene in Benzene Solution

1977 ◽  
Vol 9 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Koichiro Hayashi ◽  
Masahiro Irie ◽  
John Kiwi ◽  
Wolfram Schnabel
Keyword(s):  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Benzene Solution ◽  
Laser Flash ◽  
Vinyl Ketone ◽  
Phenyl Vinyl
Sign in / Sign up

Export Citation Format

Share Document